SUMMER purchase Character LCD Modules misconceptions

Certainly the best IPS panel

With the increasing demand of consumers , many photography enthusiasts or players can not find a primary design display products in the Heart of the overall delisting after CRT monitors , LCD monitors because TN panels can not meet their needs in terms of reliability of color , and wide viewing angle LCD price too expensive. But this year appeared on the market using low-cost panel display products are well up for this gap, but also become the focus of chase .
Cheap wide angle LCD has become a hot topic in recent years

In these displays on the market used mainly from the C-PVA panel , MVA panel and the launch of three IPS panel specifications . But be induced by lack of expertise in the field of television and salespeople , many consumers have a wrong idea : IPS panel is the best. To actually ask inquisitive IPS panel in the end was good , I believe that consumers rarely say the system .

VA class IPS panel with wide viewing angle panel have their own advantages and disadvantages , OLED Display Module not the presence of overwhelming victory

VA classes and a wide viewing angle panel compared the advantages of IPS panel is relatively fast response time, and more accurate color reproduction ; while the VA class is the biggest advantage of the panel have a higher contrast ratio ( note that this is not a dynamic contrast ratio, and static contrast ratio ) , many with C-PVA or MVA LCD monitors are equipped with 3000:1 native contrast ratio , such as Samsung F2380, BenQ " steel Man" series LCD EW2430V etc. , in addition to BenQ also said it will launch a native contrast ratio of up to 5000 : 1 MVA wide viewing angle panel products ( BenQ will call Li Rui black screen ) and high contrast is able to demonstrate the advantages of a richer picture level , while more pure black screen , help watch movies , play games ; high enough contrast IPS panel has also been plagued by problems , there are many user feedback , said IPS panel " black black does not go " , but also because of this reason that the official result .

C-PVA or MVA panel also has a very reliable color performance , this part of the IPS matched

After a variety of VA class before we tested ( including sharp black screen MVA and C-PVA) liquid crystal display products , you can see them and IPS panel , almost completely cover the sRGB color space , so even as a design drawing or photography repair film, which also can be well done.
And this idea is basically shopping guide them to better sell their products and instill consumer , with word of mouth among users COG LCD Module, it has almost become a "truth" , so here we are once again reminded us of two type of wide viewing angle panel each have different strengths and weaknesses , in the purchase or to take into account the actual needs .

Response time of liquid crystal TFT Display Module

The so-called reaction time of each pixel LCD display of the input signal reaction speed, ie the pixels from dark to bright or dim light by the time needed ( the principle is the voltage applied to the liquid crystal molecules of the liquid crystal molecules twist and replies ) . Often say 25ms, 16ms is referring to the reaction time, the shorter the time to see if the user does not have a more dynamic picture shadow tail dragging feeling. The reaction time is generally divided into two parts: the rise time (Risetime) and fall time (Falltime), which means that when the sum of both prevail.



CRT monitors , as long as the electron beam hitting phosphor instantly luminous , while the residual glow very short time , so the traditional CRT monitors response time of only 1 ~ 3ms. Therefore, the reaction time in the CRT display is generally not been mentioned. And because the LCD display is the use of liquid crystal molecules twist control light off, while reversing the liquid crystal molecules is a process, so the response time is significantly longer than the liquid crystal display CRT.

25ms to 12ms from the early well-known 16ms then recently appeared , the reaction time is continuously shortened stereotypes are not suitable for liquid crystal displays and entertainment are being huge challenge. You can do a simple conversion : 30 ms = 1/0.030 = 33 per second display screen ; 25 ms = 1/0.025 = 40 per second display screen ;OLED Display 16 ms = 1/0.016 = 63 per display frames ; 12 ms = 1/0.012 = 83 per second display screen . As can be seen the birth of a great progress means 12ms LCD manufacture.

It should be noted that the LCD display has a scanning frequency of restrictions , especially for field frequency ( also known as refresh rate ) , many of which are limited to 75Hz or less , but in terms of general concepts , 75Hz refresh 75 means one second screen looks like this reach 12ms frames per second, corresponding to a 83 .

In fact , we said above, the 12ms response time is the time for switching between black and white screen required , this full white drive voltage required to switch the black screen is relatively high , it is more switching speed fast , up to 12ms; most of the practical applications of the switching gray screen ( LCD and its essence is not completely reversed , incomplete light transmission ) , the required driving voltage is relatively low , the switching speed is relatively slow. So together, in the gray screen refresh rate of 75Hz 12ms has to meet the needs of the Lcd display module .

According to the data showed that:
Reaction time = 30 ms = 1/0.030 per second display screen can display 33 , which is already able to meet the needs of DVD playback ;
Reaction time = 25 ms = 1/0.025 per second monitor can display 40 images, a DVD player and fully meet the needs of the majority of the game ;
While playing the kind of intense action game ( eg QUAKEIII/UT2003/DOMMIII), Speed ​​Pursuit and other games to be achieved if there is no ghosting , the screen displays the desired reaction time at 60 frames per second, the speed should be more than that required = 1 / 60 frames per second display screen capable of displaying = 16.6 ms.

Character LCD Modules screen features TFT-LCD research

As the technology matures early nineties TFT color LCD flat panel displays rapid development, less than 10 years, TFT-LCD screen display rapid growth of the mainstream, which has the advantage that it is inseparable. The main features are:

A wide scope
The temperature range from -20 ℃ to +50 ℃ can be used normally after TFT-LCD liquid crystal display cryogenic temperature reinforcement operating temperature can reach minus 80 ℃. Can be used as a mobile terminal display, desktop terminal display, and can be used for large-screen projection TV is an excellent performance of the full-size video display terminal.

Second, good use of properties
Low display range covers from 1-40 inches wide range of applications as well as all displays large projection plane, is a full-size display terminal; display quality from the most simple monochrome character graphics to high resolution, high color fidelity , high brightness, high contrast, high response speed of various models of video display; display has direct-projection type, see-through, but also reflective. Voltage applications, low driving voltage, solid use of improved security and reliability; flat-panel technology, but also light, save a lot of raw materials and the use of space; low power, its power consumption is about one-tenth of CRT monitors, reflection type TFT-LCD or CRT only about one percent, saving a lot of energy; TFT-LCD LCD screen products as well as specifications, dimensions serialization and varied, flexible and easy to use, maintenance, updates, upgrades easy to use long life and many other features.

Third, the high degree of automation of manufacturing technology
Large-scale industrial production characteristics of a good. TFT-LC D LCD technology is mature industry, large-scale production yield of over 90%.

Fourth, good environmental characteristics
No radiation, no flicker, no damage to the health of users. Particularly TFT-LCD electronic books appeared, will mankind into a paperless office, paperless printing era, triggered the revolution of human learning, communication and records civilized manner.

Five, TFT-LCD ease of integration and upgrading
There are amorphous, polycrystalline and monocrystalline silicon TFT-LCD LCD, TFT future there will be other materials, both glass substrates have a plastic substrate. Large-scale integrated circuit technology and semiconductor light source technology the perfect combination of great potential for continued development.


Developing fast, stable core technology

Manufacturing, advanced production technology, new materials development, large-scale production equipment, will drive the upstream industries. TFT-LCD module is the core component of the information industry, involving almost all the areas of communications, transportation, household appliances, computers, education, industrial, medical, defense and so on. TFT-LCD production line decades of industrialization experienced seven major development, an average of one and a half years of production line will be updated. However, the core technology of TFT-LCD is relatively stable. Wide-driven industries face, has global significance for the national economy: Raw materials, production equipment, production technology involves dozens of areas of modern industrial production.

On a large area of ​​glass or plastic substrate manufacturing control cell (LC or OLED) switching performance than in silicon TFT greater technical difficulty scale manufacturing of IC. Requirements of the production environment (degree of purification of 100), the purity of raw materials requirements (electronic special gas purity 99.999985%), production equipment and production technology requirements are more than large-scale integrated semiconductor, is a modern large-scale production of the top technology. The technical characteristics of TFT TFT technology is developed in the 1990s, the use of new materials and new technology of large-scale semiconductor integrated circuit manufacturing technology the whole, is a liquid crystal (LC), inorganic and organic thin film electroluminescent (EL and OEL ) flat panel displays foundation. TFT is on a non-single-chip glass or plastic substrate (of course also be performed on the wafer) to form a variety of film manufacture circuits required by sputtering, chemical deposition process, through large-scale manufacture of film semiconductor integrated circuit (LSIC) . Use of non-single crystal substrate can greatly reduce the cost, is an extension of the traditional LSI to a large area, multi-purpose, low-cost direction. Its main features are:

A powerful
Now people began to drive IC integrated into the glass substrate, the entire TFT function more powerful, which is the traditional large-scale semiconductor integrated circuit unmatched. As the first site circuit matrix TFT liquid crystal light valve to improve the properties. For high-resolution displays, via 0-6V range of voltage regulator (the typical value of 0.2 to 4V), to achieve a precise control of the target element, so that the LCD screen to achieve high-quality high-resolution display possible. TFT-LCD is a human history over the CRT display quality in a flat panel display.

Second, a large area
The first generation of the early nineties large area glass substrates (300mm × 400mm) TFT-LCD LCD production line, the first half of 2000 has been expanded area glass substrates to 680mm × 880mm), which is expected to start in 2009 in Japan SHARP investing in Osaka 10 generation line glass substrate size reached 2880mmX3080mm, the size of the glass panels can be cut 15 42-inch lcd graphic display TV.

Third, the wide range of applications
With technology-based LCD TFT flat panel display industry is the backbone of the information society, and technology can be applied to the rapidly growing organic electroluminescent thin film transistor (TFT-OLED) flat panel displays are also rapidly growing.

Fourth, the process flexible
In addition to sputtering, other than the CVD (chemical vapor deposition) MCVD (molecular chemical vapor deposition) and other conventional deposition processes, have begun to use the laser annealing technique, can produce both an amorphous film, a polycrystalline film, single-crystal film can be manufactured. Not only can produce silicon film, you can also make other Ⅱ - Ⅵ family and Ⅲ - Ⅴ semiconductor film.

Five, low-cost
Glass substrate and a plastic substrate from the fundamental solution to the problem of the cost of large-scale semiconductor integrated circuit, semiconductor integrated circuits for large-scale applications to develop a broad application space.

Sixth, the high level of integration
For 1.3 inch TFT liquid crystal projector with a resolution of XGA chip containing one million pixels. Resolution of SXGA (1280 × 1024) of the thickness of the amorphous silicon TFT array is only 16.1 inches 50nm, and TABONGLASS and SYSTEMONGLASS technology, integration of the IC,TFT Display Module supply of the required equipment and technology, the technical difficulty is more than the traditional LSI.

How should the Character LCD Modules screen summer dust

Due to static reasons, LCD TV screen surface is very easy to collect dust . But clean water is a very unwise way to clean. First, the general effect is clean , and easy to leave water marks .Character LCD Modules  More importantly, the LCD is very easy because of damp cause permanent damage . ( If water droplets penetrate the screen , should not energized , to make water in a warm environment, slowly evaporate )

In fact, a dedicated lcd module cleaning cloth and cleaning fluids are commercially available . Professional cleaning cloth to clean better , soft ( do not think you can replace the glasses cloth ) , cleaning fluid also makes cleaning effect is more outstanding . In order to avoid scratches screen , or use a professional as well.

How to design the best ambient light TFT Display Module

Many people will find that during the day watching TV , the image will feel lighter , color is also worse than the night watching . That is because the vast majority of flat panel TVs, are more sensitive to environmental light . Therefore, we must ensure that TV can not receive direct sunlight. In the choice of curtains , light-colored , OLED Display light and good material is not suitable for use in the living room , and if the choice of color factor is small, it is best to add a layer of the Iron Curtain back in order to ensure the room illumination .

Now many design companies in the renovation program , that they will use some along the living room ceiling plaster ceiling decoration done , and in which to install some lighting to heighten the atmosphere . This design looks more power , but in fact to enhance viewing comfort are quite helpful : Because watching TV lights , the room becomes dark, the TV screen is very bright , a black and a bright light contrast very strong , very tired eyes will see for a long time , easily lead to soreness and discomfort , or even cause headaches . And appropriate to open with some background lights, television image will feel softer, clear eyes will be comfortable. Note, however , the lights do not shine directly on the TV screen and do not direct the eye directed at , and should be placed on the side of the TV , or further afield .

Therefore, lamp decoration part, we want to try to make precise control of the lamp ,mini lcd module only to be able to achieve the lamp lighting angle changes , but also to be able to switch control to achieve independence , in order to facilitate the actual situation we choose the appropriate lighting brightness .

Character LCD Modules TV Daily Care and Maintenance

With the popularity of large-screen LCD TV , has brought us a new visual enjoyment while later use in maintenance problem has become a focus of attention of many consumers . If maintained properly , not only affects our visual experience , but also greatly reduces the service life. So how proper maintenance and use of the LCD TV? Here we come to learn about.
With the popularity of large-screen lcd module TV , has brought us a new visual enjoyment while later use in maintenance problem has become a focus of attention of many consumers . If maintained properly , not only affects our visual experience , but also greatly reduces the service life. So how proper maintenance and use of the LCD TV? Here we come to learn about.

TV encyclopedia knowledge LCD TV Daily Care and Maintenance 1 , moisture, dust , lightning : keep the machine working environment is relatively dry, do not allow water to enter the body ; when the machine is not in use , consider using dust ; as plasma and peripheral configuration of a lightning electrical outlet on it.

2 , heat : the heat generated by high-power plasma TV can be seen as the number one enemy , so pay special attention to the use of thermal plasma TV .

3 , screen burn : a long time because the screen is a still picture playback fixed partial motion blur generated by the burn , which is a plasma TV itself characteristics of the decision .

4 Clean: regular plasma TV screen to do the cleaning , keep the screen surface bright as new is a good way to maintain picture quality .

5 , voltage: mini lcd module the conditional case should plasma TV provides independent power lines, or to add a stable power supply is a good choice .

Character LCD Modules screen pixel repair tips

Thank Chen Qu delivery
Now monitors, laptops , tablet PCs , mobile phones and digital cameras and other devices use the color lcd display module screen . Sometimes when we stare at the screen , you will find it at more than a few small points, that is, we often say that the dead pixels. Although fewer dead pixels does not affect the image display , but it looks unsightly always compare , then here we use a few tips to get these small dead pixels.

Causes dead pixels

As the LCD panel production defects , appears on the LCD screen, dead pixels is a very common problem , the LCD screen is composed of a lot of points, each point of the pixel from the RGB color changing color and image formation . But when the pixel problems, so that the color does not change , the formation of dead pixels. Dead pixels are usually divided into several, if it is colored bright spot, it shows that the point of the pixel is just stuck , we can repair this kind of dead pixels . However, if it is black dark point , it means that the point completely broken, even if the restoration is invalid . If you are a new user purchased the product and found more dead pixels , it is best to find a vendor to be exchanged immediately . Note, however, that some manufacturers do not pay for the small amount of dead pixels , for example, some of the liquid crystal display , if the dead pixels or less in three words , I would not swap users .

Marker extrusion

Turn on the computer and the monitor , the screen display is set to a plain black screen ( or other contrasting colors and dead pixel solid ) , so you can make highlights at a glance. Got the pen cap is smooth , it would be the highlight of the cap gently squeeze the front , then you can see the white light, if not, you can slightly increase little harder . About 5 to 10 under after extrusion , the internal Graphic LCD Module screen flow , you can let stuck pixel back to normal, and then let the bright spot disappears.

Gently squeeze with a cap will have some effect dead pixels

Hot towel heating

Use cap squeeze LCD screen may be because the user's force is too large for the screen damage , if you doubt the power , then we can also use relatively safe method to repair a hot towel heating highlights . A towel soaked in hot water , if possible , the use of fire for heating the pot filled with water until it appears at the bottom bubbles. To remove the towel , wear insulated gloves wring it . Will be placed in a plastic bag in a hot towel on the screen there are bright spots , try to ensure that heat is concentrated in bright office , heat about 10 minutes, making the internal LCD display heat flow , so that the bright spot disappears.

How to detect the screen appears a small crack on the panel oled module

Screen panels are very sophisticated things in the manufacture and use of the process if done incorrectly , may cause the screen suffer damage. So Apple is how to detect whether the device's screen was damaged , there were minor cracks and other problems?

Screen panels are very sophisticated things in the manufacture and use of the process if done incorrectly ,mini lcd module may cause the screen suffer damage. So Apple is how to detect whether the device's screen was damaged , there were minor cracks and other problems?

Last week, the U.S. Patent and Trademark Office published the acquired patents, these patents and manufacturing processes, improvements and other related small adjustments . Here we highlight a set of apples used to detect cracks in the screen system patents . Apple's use of external resistors way to detect trace debug screen panels or other devices on the crack pattern .

This system typically includes screens and data processing circuit . Screen with a display panel may be , its periphery is the external resistor tracking facility . Screen intermittent detection circuit can detect external resistor tracking facility fracture, while the data processing circuit can determine the seriousness of the display panel is being damaged. If the display panel is severely damaged, OLED Display the data processing circuit can also be issued a warning to the user's screen destruction issue.

CLED and OLED those things oled module

CLED and OLED Module Both are self-luminous , brightness, contrast and so little difference , OLED advantage of thinner that can be done , but CLED also has some advantages, such as longer life expectancy than OLED , and lower cost than OLED . As long as yield improvement , cost will be lower than the OLED .

Sony due to technical problems , failed to produce a large-screen OLED, which turned CLED research and development, pilot production of 55 -inch prototype CLED , I mainly want to get rid of the dependence of large flat display panel . But the small screen , is still not given up on the use of OLED R & D , indicating little difference between the two properties ,SPI lcds the same is the future mainstream of development of new display .

With you to understand Character LCD Modules large screen project implementation point

A complete set of large-screen LCD splicing system , in addition to the front of the screen , the will to involve computers, networks , video surveillance, integrated wiring and numerous peripherals and many other devices , these features also created a large-screen LCD splicing system installation complex and difficult characteristics. In fact, in addition to these features , large-screen LCD splicing system for engineers not only have excellent engineers and technicians , but also have strong project management and operational capacity , only to have these features in order to respond flexibly to various installation projects .
Typically, large-screen LCD splicing system project can be divided into four distinct phases , namely: project planning, preliminary survey , project implementation and post-project . Among these four stages , pre- survey and implementation of the project is very important, if these two stages in the implementation process problems, will seriously affect the progress of the projects and the quality of the projects . Before the implementation of the project -based investigation and implementation of two parts which need to pay attention to what ?
First, the pre-construction survey points:
Pre-construction survey in addition to the construction site in person to understand the investigation , they also need to conduct a detailed and customer communication , and make the overall construction project planning , as these largely determines the length of the project cycle , cost control, and rendering the final result , it must be particularly careful.
1 First, install the equipment on the ground to be flat.
Because the entire large-screen LCD splicing system weight is very large especially rear stitching, its technology determines its cabinet is very large, and very heavy, so if the floor is ceramic tile installation of equipment , it must first confirm whether it can withstand such weight , preferably fixed on another device antistatic floor on the ground, in order to ensure long-term ground by heavy deformation.
2 , followed by wiring
Large-screen LCD splicing system wiring, power lines and signal lines to be separated in order to avoid unnecessary interference with the signal ; another big screen COG LCD Display splicing according to the specifications , the cabinet position , the signal source location for all kinds of lines calculated cable length , number of joints and the signal line names. But also confirm with the customer , project pipeline channel is available to meet the actual needs, in order to continue follow-up work .
3 , ambient light
Because large-screen LCD splicing products brightness is relatively limited, if the system of ambient light is too bright , the picture effect would have been affected . Under normal circumstances, required within 4 meters in front of the screen is dark , it is best not to install fluorescent tubes can be installed concealed downlights , light to shine directly on the screen can not and must have a separate switch.
In addition to the installation of tube lights and large screen devices in parallel , try to make the work area has adequate lighting , but will not have a significant impact on the screen , the screen may be near the incoming light ( such as windows ) , if necessary, to be blocked while the device is running best to turn off the light ,16x2 lcd in order to ensure normal operation of equipment .
4, the framework requires
Taking into account the convenience of installation and maintenance , the frame must be removable edging edging . Outside the framework of the fight away from the wall along the side ( up and down about four sides ) set aside about 25mm clearance on each side , a large video wall should be increased according to the number of columns margin . In addition , in order to post into the box maintenance, repair channel principle is not less than 1.2m wide. Removable side bar to hold the edge of the screen 3-5mm is appropriate, in the box and the screen is fully in place, and finally fixed removable trim.

Challenges thinner devices oled module

Now, that is frivolous fashion. Actively launch increasingly thin touchscreen devices, especially touch-screen phone, face a double problem: First, from the display coupled to the sensor noise increases; Second, the parasitic capacitance of the sensor to improve.
Display the generated noise relative to the charger noise is much lower in terms of strength, but the impact on the performance of a great touch because of its close distance of the touch sensor. Although the AMOLED display is very quiet (but more expensive than LCD), but most of these are on the market today higher ACVCOM noise and DCVCOM type LCD display. The common electrode VCOM of the display layer is the source of noise. Let us come back to discuss the equation (1), this is to determine the parallel plate capacitor touch sensor electrode and the display designated to receive arising between VCOM layer capacitor size. Here, area "A" is the entire custom lcd area of ​​the receiving electrode, the display cover the entire screen, therefore, the distance "d" is that the receiving electrodes and the distance between the layers VCOM.
Previously, touch screen device uses an air gap or shield to protect the screen from the touch sensor coupled to the receiving electrode noise impact. However, these solutions will increase the thickness and costs (4 inch screen shielding layer adds cost up to $ 1.00). Now, as the devices become increasingly thin, the air gap and the shield have been canceled, and the touch sensor using an optically transparent adhesive (OCA) is connected directly to the display. This causes the sensor closer to the receiving electrode VCOM higher noise level, so it will reduce the "d", to increase the capacitance and coupling more noise. Since OCA (dielectric constant of 3) replace the air gap (dielectric constant of a), therefore capacitance will be further improved. Slim-type product development trend is the next part or all of the touch sensor will need to be integrated in the display, which is the so-called in-cell (cell touch), On-cell (plug-touch). This integrated protocol stack will display the sensor closer to the display of the receiving electrode VCOM layer, thereby coupling more noise.
Slimmer shape product development The second problem is the parasitic capacitance touch sensor (CP) increases. In order to try to make the whole protocol stack becomes thinner, ITO substrate layer (made of glass or PET) require increasingly thin. This shortens the sensors transmit and receive the distance between the electrodes, thus increasing the capacitance. CP increases the scanning touch panel requires a longer charging and discharging, which reduces the maximum frequency of the scanning panel. The problem with this is that we want to scan at higher frequencies because of the higher frequency noise is usually small. In addition,low temperature lcd display scan times also mean increased power consumption and decreased refresh rate.

Teach you six strokes to solve Character LCD Modules splicing screen Huaping

The first one: Check the LCD splicing screen and graphics card connection is loose. Poor contact will result in a " clutter ", " noise " is the most common form of Huaping phenomenon .
The second measure : OLED Display Module Check graphics card overclocked . If excessive overclocking graphics cards , usually irregular , intermittent stripes. At this time , it should be appropriate to reduce the overclock . Note , first of all to reduce the memory frequency .
The third measure : Check the graphics quality . If after replacing graphics Huaping problems , and in the use of the first and second trick did not work , the card should be checked against electromagnetic interference and electromagnetic shielding whether the quality of clearance. Specific approach is: some of the parts that may cause electromagnetic interference as far away from graphics card installed ( such as hard disk ) , look Huaping disappears. If it is determined that the electromagnetic shielding function graphics , but off , replace the video card, or home-made shield .
Fourth trick : Check the LCD splicing screen resolution or refresh rate is set too high. LCD splicing screen resolution is generally lower than CRT monitors , if more than the manufacturer's recommended best resolution , there may Huaping phenomenon.
Fifth move : check if you have an incompatible graphics card driver. This is generally easy to ignore , because the graphics driver updates faster and faster ( especially NVIDIA graphics card ) , some users are always eager to install the latest version of the driver . In fact , some of the latest test version of the driver either , either graphics or game for a specialized version optimized for the use of such drives can sometimes lead to the emergence of Huaping . Therefore , it is recommended that you try to use Microsoft-certified drivers , the best use of graphics drivers provided by the manufacturer .
Sixth trick : If you use more than five strokes later, still can not solve the problem , there may splicing lcm module quality problems. In this case, replace the other monitor to be tested.

Factory Network Video Monitoring System Design TFT Display Module

In the modern enterprise , the factory to implement a comprehensive network video surveillance system : the enterprise security monitoring section can factory gate , factories, office buildings ,lcd module  perimeter fences , warehouses and other targets in real-time clock video surveillance, the factory produced the main channel and the venue monitoring ; administrative control section for office space for video surveillance , in order to understand the work of employees , enhance employee attendance management, improve work efficiency ; governance component produced on the production line and shipped throughout the implementation of monitoring, as well as the work of the workshop is to understand the situation and the pipeline the production situation . Some video images to be kept confidential , or some workshop environment harmful to human health due to work needs unattended remote monitoring of the production process can be used ; certain devices inaccessible due to the installation location , labor inspections homework more dangerous , you can use the camera for remote supervision ; business leaders use the desktop computer in the office , to keep abreast of all major aspects of the real production conditions produce , handle emergencies, and on-site two-way voice communication , going to be using a browser to access way into the system , to keep abreast of the situation produced .
This monitoring system is composed of the following segments :
1 Front: at each monitoring point installation million high-definition digital video camera , according to the different environment monitoring use an ordinary bolt , bolt infrared ,character oled display  infrared dome and speed dome , such as different models.
(2) Transmission : According to the distance from the camera to the monitoring center selected transmission mode, the short distance ( 400 m or less ) and switches cascaded through the network cable into the control center , distant cascade through the network cable and switches plus trunk fiber and fiber optic transceivers enters the monitoring center.
3 Monitoring Center : Monitoring center is mainly composed of four parts , room switch , DVR host , TV wall, managed host.
4 control center : the control center by the management host , display equipment.
5 Client : Client host through client software to access the camera , maximum support 36 channels with the screen display .
Front of all the cameras are connected room switch signals , each DVR host can also access switches , each host display 16 images, signals are connected via VGA LCD television or monitor , in addition to and connected to the DVR LCD TV , but also increase the number of television sets ( for example, coupled with the LCD splicing screen ) , these TV access via HD decoder box room switch ( each TV with a decoder box ) . Video data saved on each DVR unit , according to the recording time needed to mount different sized hard drive or disk cabinet . All the operations control center to achieve through the management host , including image preview , the screen switches on the wall, check the host videos, but also according to the need to achieve alarm linkage function. Each monitoring center through a switch the DVR access to Internet,Character LCD Modules a remote user ( eg superiors ) can be carried out by the client image preview , capture, call recording and other operations ( according to different users different permissions ) .

Bar Character LCD Modules TV wall system requirements outlined Analysis

With the flat-panel TV prices fall, more and more bars opted to transform the flat-panel TVs ,4.3 TFT display module combined into a large bar LCD TV wall mosaic in order to achieve modern , dynamic site-specific display. Suitable for bar display splicing system needs to use the increasing bar LCD TV wall system generally consists of large screen display wall , display processor and sound control system.
Because bar special environment , the use of bar TV wall system requires the following characteristics:
( 1 ) LCD Video Wall with a bar and splicing processors are often continuous working time is longer, the work day boot time up to 9 hours or more, and require seven days a week . Therefore requires the use of continuous and stable work can not easily damaged display device and splicing processors. Civilian large-size LCD TVs continuous working time is too long , LCD TV life will be greatly affected , while Beijing Kaibo Tai Qi production of LCD splicing screen or large-sized LCD screen , using industrial-grade display panel, support 7 × 24 hours a day, and brilliant color, high brightness, life is much higher than ordinary household LCD TV.
( 2 ) require low cost , relative to large enterprises and government investment projects , bars for the high prices reflected endurance is very fragile, so the overall LCD splicing wall bar prices are not too expensive. The Beijing Kaibo Tai Qi company has its own manufacturer, also has regional branches, with in addition to the LCD panel ( not grasp the domestic production of LCD splicing screen panel technology ) outside of the whole industry chain downstream . Spread avoid middlemen and high logistics costs, the real benefit of our customers , so splicing LCD screen is very good value for money .
( 3 ) the signal requires a simple , often only need to live video signals from a computer or a dynamic picture playback , but not more complex signal input; also requires simple manipulation of the display processor , the actual application is often no need for control , or mode conversion , requires only a power-up to ;
( 4 ) signal output display requiring a simple and generally only need to assemble into a large screen ,Character LCD Module or the same combination of different splicing , does not require a variety of different signals at the same time display, and fancy window control and other complex functions are not practical ;
( 5 ) Since the liquid crystal display different splicing unit , requiring a splicing processor can support different splicing unit placement , requires splicing processor can support a display unit such as horizontal and vertical angles side , and asked to show the picture can be a complete mosaic ;
( 6 ) some bars on the screen, the entire screen display is less demanding, allow some splicing gap , you can use the LCD wide-brimmed seam stitching . Of course, some of the bar to pursue the kind of full-screen display of the shock effect , you can use our Narrow LCD screen between each patchwork stitching unit is only 6.7 mm , this range comply with the principle of human visual perception , does not affect the viewing.
( 7 ) Certain upscale bars, often also require different mosaic wall bar linkage site , also shows a mosaic wall row / column of the screen, or if you need the system to automatically run a different display modes. Previously to achieve a more dynamic, modern display.

The most obvious technical advantages PDP plasma splicing oled module

PDP, Plasma Display Panel abbreviation of the Chinese name for the plasma display panel . PDP is a gas discharge display technology , it works with fluorescent lamps is very similar. It uses a plasma tube as a light emitting element , a plasma screen, each tube corresponding to a pixel , the screen to the glass as the substrate , the substrate spaced from ,Character LCD Modules surrounded by hermetic sealing by forming a discharge space . The discharge space filled with neon , xenon mixture of inert gas as the working medium .
In the inner surface of two glass substrates coated with a metal oxide conductive film as the excitation electrode . When added to the voltage on the electrodes , the discharge space of the mixed gas plasma discharge phenomenon will occur . Gas plasma discharge ultraviolet light, UV excitation screen , screen emit visible light , display the image .
When using the RGB phosphor coated screen, the screen UV excitation , the light emitted by the phosphor screen was red , green, and blue . When each unit to achieve 256 gray color after color mixing , they achieve color display.
From a technical principle , due PDP plasma screen glowing tubes are uniformly distributed in the plane , so that the center of the display image and edge exactly the same, does not appear distortions to achieve a true sense of the pure plane. In addition, as the process does not show electron beam motion , without aid of electromagnetic fields, electromagnetic fields outside so it will not interfere with them , and has good environmental adaptability .
Relative to the LCD technology is concerned , PDP splicing not only did it, the bigger the screen the image depth of field and higher fidelity , but it also avoids the LCD technology in the response time encountered problems, and the PDP patchwork than LCD splicing much smaller,128x64 oled although they can not reach DLP mosaic patchwork tenths of a millimeter , but the visual effect is almost non-interest can be omitted , and the PDP screen body is very thin . In simple terms that is , PDP splicing technology , LCD and DLP combines all the advantages of the two technologies , and also to overcome their shortcomings.
Especially in recent years , plasma technology has overcome its own fatal flaw , " burn-in " phenomenon since , there have been more and more manufacturers began to enter the plasma market , completely out of time in the past few years , only a ORION manufacturers "alone " status, and showing a " contending " picture.

Interpretation of the installation of large screen Character LCD Modules splicing

We know that the installation of large screen LCD splicing is actually a relatively tedious process , the entire LCD splicing screen is not as simple as assembling a computer . That: For the installation of large screen LCD splicing professional technicians are needed to hands-on , from installation to commissioning , the whole process probably non-professionals do not know how to proceed, LCD splicing screen and easy to damage, so the entire LCD splicing screen installation is is very important.
As a dedicated large-screen displays, large screen lcd module splicing installation and use is often a simple process. DLP bulky compared to other display devices, liquid crystal display device light is an important advantage . However, in order to achieve the daily application system functions , often also be equipped with other devices , such as matrix , distributor, connecting lines, images accessories Controllers , splicing and more. The face of the image to achieve cross-screen , roaming , PIP, superposition, scaling and other high-end display ; LCD splicing face to be combined into a single large screen image determines the big screen LCD splicing accessories needs strong support .
Need to use large-screen LCD splicing accessories range , but some parts in different contexts and must be used. Such as: in the face of multi-channel signal processing , the use of the matrix . Select a different video processing system, VGA, composite video , S-VIDEO, YPBPR / YCBCR or DVI signal input, to meet different occasions and different input requirements. Can be controlled by software, to achieve a variety of signal switching , spliced ​​into full screen display , any combination display, image stretching display , roaming image display, image superimposed display. The large-screen LCD splicing access matrices can meet customers' different needs ,OLED Display to create a personalized system that provides various embodiments and technical support. In the realization of cross-screen image , roaming , PIP, superposition, zoom and other functions must be used in high-end display image mosaic controller. There achieve vertical screen display , touch- stitching, ball stitching, large-screen LCD splicing bars are all need different accessories.
In general, the first large-screen LCD splicing operation is difficult for users to configure a good LCD splicing screen works. In addition, some users now own when you configure an external matrix should pay more attention on how to protect the LCD screen from damage , it is best able to ask a professional installation technicians to the scene . Although many parts LCD splicing screen , but after a reasonable configuration , the same big screen LCD splicing allows simplified engineering , allowing users to use the LCD splicing screen more convenient.

Ultra-thin win more market opportunities oled module

Traditional DLP Video Wall has been in many high-end areas deeply taken root : product stability, the characteristics of high image consistency , and professional products in the field of continuous use , demanding stable, so there can be good reasons for DLP grazing early market accumulation.
Faced with this situation , the emerging LCD splicing how to do it ? The key technical indicators at the seams also significantly behind the case , only play to their strengths, their weaknesses shield to cure the enemy win. The tablet strengths , what is it ? That of course, is a slim volume .
It is understood that the LCD splicing wall thickness can be easily controlled at 20-30 cm , which makes the Toshiba DLP splicing techniques thickness of half a meter to one meter unmatched . Although this advantage for those space resource-rich clients , such as traffic control center , does not seem great value , but for the "normal -type" wall space rearranged TV customers, the market for commercial office space for lease that higher amounts customers, for those who have completed the basic planning interior space applications, there is need to increase the display wall customers, ultra-thin graphic lcd modules splicing is particularly valuable to it.
For example, in the capital Machine + field waiting hall , or subway channel thickness of less than 20 cm LCD tiled display wall, with a thickness greater than 50 cm DLP splicing comparison, the advantage is very significant , not only can save per square meter may in ten yuan or even higher day venue rental , and also has a " pretty" special effects. Slim makes LCD splicing wall space as far as possible consistent design , rather than a significant lordosis , the aesthetic advantages are enough to make it beat DLP splicing .
In fact, the great majority of the commercial market , exhibition display market and public space applications, space occupancy costs are huge and visual factors of disharmony , OLED Display Module splicing splicing its tablet slim formal characteristics in these areas DLP won a fundamental "squeeze" does not come in the living space .

Character LCD Modules Video System Design Principles

In the "advanced technology , stable performance , complete functions , easy operation, safe and reliable, easy expansion ," the design goals , this program is based on the following principles:
1 , high reliability , high security, flexible operation , easy expansion , easy to integrate
The system uses advanced technology and system architecture , improve system reliability and security , will not cause other subsystems safety and environmental impacts . Reduce the impact of failure ; has modular design , with expansion capability ;character oled display adopt a unified control and management system that can operate flexibly .
2, the image display is clear and stable
Image display clear, high brightness screen display uniformity , true color reproduction , image distortion, shows high stability, long life, 7 × 24 hours to meet the long-term continuous display requirements.
3, various access capability of the display signal
Capable of displaying Windows, UNIX, Linux and other mainstream operating systems computer image signals, able to display PAL / NTSC and other video signals.
4 , unified display and function zoning display
Display system can be used as a unified whole platform for full-screen display shows a variety of signals , 7 TFT display module such as displaying greeting and so on. At the same time , can be divided into several functional areas, each functional area will display a variety of signals according to functional needs .

LCD Character LCD Modules stitching program analysis

did program | lcd module LCD stitching program analysis : did the rapid development of LCD splicing , for airports, subways, train stations and other places of these overcrowded public transport , safety monitoring and flight , train schedule information in real time , clear and accurate display , is extremely important. Narrow , ultra-narrow , did large-screen LCD splicing can solve these problems.
did Solutions Application Analysis:
1, did for the safety monitoring program areas: surveillance video wall mainly to solve the multi-channel signal centralized control display screen assembly for multi-block splicing , on the same platform , real-time computer images, video images mixed display , which can be single-screen independent screen display can also be achieved through multiple screens stitching software image magnification mosaic display , means flexible , fully meet the needs of the use of video surveillance .
2 , the information display areas: real-time , clearly show the flight information and train schedules, in the rush hour every passenger can choose according to their flow travel time and ease congestion ; weather and other convenient information can be displayed , bring more convenience to the traveling public ; addition, ultra-narrow did TFT LCD Display large screen can also transport these high traffic sites for various advertising and information campaigns , the perfect solution did allow opportunities everywhere !

Character LCD Modules large screen display wall buy recommendations

LCD LCD large screen display wall proposed purchase of " Three Views" - see "Response time " to see " the number of colors ," and see " viewing angle ."
Response Time
For this indicator , can be considered as the input image signal response speed . Is the same point in the panel above ,OLED Display from black to white and white to black from the time length . If the index is too long , then quickly switch the image or video playback will produce " ghosting " effect, to discourage the use .
Response time determines the number of frames per second, the screen can be displayed , usually when the screen display speed is greater than 25 frames per second , the human eye will quickly change the picture that is continuous screen. In high-speed ball running , high-speed switching or moving picture , to achieve the best display effect , you need the screen display frequency exceeds 60 frames per second , the response time of 16ms or more to meet the requirements, that is, the shorter the response time , rapid changes the picture shows the better.
Number of colors
Number of colors , refers to the monitor can display the number of colors , the higher the index , the picture is more abundant . Early , LCD can display only 16 colors, about sixty-five thousand kinds , while recent period , as technology advances , BSV has an LCD can display about 24 colors, some 1,600 million. If just from the indicators ,Graphic OLED Display LCD is still some distance away from the CRT , but realistically speaking , sixteen million kinds of color has to meet the requirements of most applications .
Viewing Angle
For this early use of laptop users must fully understood , using laptop computer , front screen image is the sharpest , assuming a certain angle tilt angle, you will not see the screen . Up to what point can see the screen images , this angle is the viewing angle. Viewing angle can be divided into horizontal viewing angle and vertical viewing angle . For this shortcoming , LCD liquid crystal mosaic screen manufacturers such as BSV development has also made great efforts , and now the LCD viewing angle can reach 178 degrees .
Also, got to choose the products carefully selected , calm , first select the products with higher brand awareness . As the LCD where the most critical parts LCD panel has been decided BSV splicing LCD screen quality and price and other factors , only those with advanced and reliable backing panel production lines , product quality and after-sales service of course, can be guaranteed.

Large-screen Character LCD Modules splicing security program

Large-screen LCD high-definition monitor splicing system provides a new platform for the best display . With a 1366 × 768 HD display resolution , 700cd/m2 high brightness , you can make the information collection device to capture the high-definition monitor screen to get the best show to meet the border monitoring, bank monitoring , traffic control, power dispatch , city management, community safety and other places applications .

1 Design Goals
Large-screen Graphic LCD Module splicing system monitoring and information dissemination in the information and deal with the intuitive , flexible, scalable , network technology and other advantages by command center applicability recognition and attention . This program is right for the project application features a large-screen display system is designed . Through my company's well-designed , the project will build a technologically advanced , fully functional , stable performance, safe, reliable, easy to operate, easy expansion of large-screen LCD display wall system .
(2) Design Principles
3 design standards and specifications
4 large screen LCD splicing system technical advantages
Large-screen LCD splicing system solutions provide LCD46H custom lcd display is designed according to user needs . The most prominent international SAMSUNG DID LCD Super Narrow high definition digital display technology, splicing technology , multi-screen applications such as image processing technology integrated into one , forming a high-brightness , high- definition, high intelligent control , methods of operation advanced large screen display system .

OLED technology in the field of large-screen TFT Display Module Prospects

Today, along with smart phones hobby , endless variety of handheld devices , in order to seek increasingly slim body and distinctive appearance effect , and longer standby time and other characteristics , OLED Display Module show skills were focused from the beginning again. OLED, the organic light emitting diode , also known as electroluminescence laser display . Because with light, energy-saving, high plasticity characteristics, so starting in 2003 , this display device in the MP3 player has been widely used .
What is OLED technology ? In fact, this is not a newly emerging technology, familiar friend of electronic products may notice that Samsung's smart phone on the use of OLED screen, Sony's next-generation handheld PSV also used this screen . In fact, as early as in the first OLED screen MP3 electronic products had appeared , but when the OLED display screen does not look so bulky now , the effect is dazzling .

OLED show skills in miniaturization has first-mover advantage is South Korea's Samsung , than to have a sound came out, Samsung will have to create a clear , memorable screen ( 350 pixels appear pixels / inch ) . In addition to the use of the small screen ,TFT Lcd Modules big screen OLED also began to carry out a new round of rapid , OLED TV industry, particularly prosperous . Only a few years ago Sony launched 11 -inch OLED TV , and now LG has launched the 55 -inch OLED TV . Sony is also starting from scratch OLED skills to focus on , and Panasonic announced collaboration , research and development of large-scale panels. China Taiwan region CMO and AUO also invested huge OLED skills , coupled with domestic companies such as BOE , Japan and South Korea launched the OLED skills competition .
With three huge investment of several companies , OLED in the next few years will be rapid development has almost become an indisputable fact , OLED technology can be described as a broad future , but I believe that OLED technology is not just limited look at mobile phones, televisions , monitors and other conventional LCD range of areas , based on the characteristics of OLED display technology , in the field of large-screen display promising . Then you follow the author look , OLED display technology in the field of large-screen What can purposes.

Seamless edge blending techniques Character LCD Modules

In recent years , LCD liquid crystal mosaic momentum of rapid development , it is still not truly seamless splicing . Truly seamless splicing is the projector edge blending techniques . With the development of hardware and software technology , seamless splicing technology into a very mature stage, and has been widely used in command and control, virtual simulation and training , industrial manufacturing and design , scientific research and complex decision-making process , in the display of the exhibition , visual entertainment, advertising other fields are also increasingly common. Below the lower edge on the chat integration technology.
Seamless edge blending technology is a special, high demand projection display applications , 160x160 lcd can achieve multi-screen image together, and to minimize the gap splicing splicing technology that completely overlap . Seamless splicing technology requires not only a complete ultra- sharp screen for projected oversized projection screen is also used for special requirements .
Seamless splicing technology has undergone a total pure hardware fusion technology, pure software integration technology , hardware and software integration technology three stages:
Pure hardware fusion technology is to integrate optical shading images, pure software integration technology is done through the electronic circuit image fusion processing , hardware and software integration technology is the integration of both optical shading treatment , another electronic fusion .
Due to hardware integration can better handle the fused image of the black balance, and image processing software integration can be better white balance , a combination of both hardware and software integration technology will be able to achieve more perfect fusion of some real color image reproduction .
Speaking from a mosaic effect , seamless splicing technology has gone through three stages of development: hard edge stitching, stitching and soft edges overlap fusion splicing .
Hard edge stitching obvious dividing line ( ie physical patchwork ) , can not achieve the integration of panoramic display ; overlap splicing refers to the two projectors cast images in the mosaic punishable by a superimposed manner overlap, but there was clearly this splicing Flatten the brightness of the superposition of at bright areas appeared ills that affect the implementation of a seamless effect .
Soft edge fusion splicing process through the edge fusion technology , both to achieve the full integration of the two sides ,character oled display  but also eliminate the overlap splicing caused by overly bright areas, and soft edge fusion splicing can be adapted to planar, cylindrical , spherical and other curved shapes splicing , have much broader applicability. Soft edge fusion splicing technology is the current mainstream technology, but also the future direction of development.

Speed ​​and quality of contradictions Character LCD Modules

For the current terms of LCD monitors, LCD viscosity, response time and quality has a very close relationship between.

Because, LCD sticky, the colors on bright, but the response time is slow; while the LCD thin, and fast response time, but the color fades. The high voltage can achieve higher response rate, no doubt. However, the characteristics of the liquid crystal molecules are obtained at different voltages in different colors, so that the voltage is the result not only raise the color is incorrect. Therefore, using the same materials of the same generation OLED Module, fast response for gamers, slow response times and better color performance 2D display sharper, more suitable for graphic design and office, Internet application.
Grayscale 4m s become mainstream

Most commercially available liquid crystal display nominal response time between black and white is the time required for conversion, of course, is the fastest LCD black and white conversion and not the slowest. LCD conversion between other colors, such as white to gray, red to blue, etc., than between black and white shift needed for a long time. A nominal 12m s LCD display, display the red dot blue dot to become time may be required for several tens of milliseconds or more. When playing games or watching movies, the screen content can not just do the darkest switching between white, but colorful colorful screen or different shades of gradations, these are doing grayscale conversion between.

As people requested more "harsh", 8m s, 5m s gray level response time of lcd moduleproducts in the market is just too short-lived, less gray 4m s products have become the dividing line between the mainstream market, adapt to this market demand , manufacturers introduced 4m s even lower gray response time of LCD products, they have gradually appeared on the market. Since 19 inches this grayscale LCD product prices are relatively high, so users are generally 17 inches or optional objects, in this small series at 4m s elected several gray response time of less than 17 inches LCD products, so that consumers who also feel this "speed experience."

Optional Character LCD Modules projector Conditions

Projector core technology components of 16x2 oled and DLP are two, and many commercial brands and manufacturers, how to choose?

Whether LCD or DLP projectors, now the cheapest less than 30,000 yuan NT, has to meet live, commercial dual-use, re-order point XGA models, from 4,5 million Taiwan dollars, the number of higher order hundreds of thousands have, of course, a large conference hall with millions of 3DLP models.

Suggested that consumers in understanding the low temperature lcds and DLP projector technology merits and menus are presented at the same time, selection, price is applicable, it should find reputable, sustainable manufacturers and brands, with a guaranteed good service, before is wise; avoid the projector to become orphaned, helpless when you want to repair, that would outweigh the benefits.

Easy to operate is very important. Like the choice to use the projector at home, you should also take care to an ample supply of DVD, HDMI component video, the need for better video processing chip, in order to show the wonderful home theater effect.

Produce full-color Character LCD Modules device program adopted

Produce full-color OLED device, you can use the following scenarios:
1. RGB mode superposition device
This mode is not the way to achieve color display light color conversion or color filter, thus increasing the luminous efficiency.Character LCD Modules  This superposition model requires material better performance and better driving characteristics, process conditions demanding.
2. Blue light emitting device + color conversion layer mode
This model was first developed by Japan's Idemitsu success, there is a blue light-emitting organic electroluminescent devices is the highest energy, so let through light color conversion medium blue, green and red excitation. The blue organic electroluminescent device structure of anode / hole injection layer / hole transport layer /
Emitting layer / electron transport layer / cathode, wherein the emitting layer is a blue electroluminescent DSA materials. Luminous efficiency of 61m / W, life of 20,000 hours, on the basis of light-emitting color conversion medium to produce a multicolor pattern organic electroluminescent device. This process requires efficient blue hair
Optical layer.
3. White device + color filter pattern
This technology was first launched in Japan TDK Corporation, the white light emitted by the device to obtain a color filter color. High cost of the color filter, the light emitting efficiency is not high, although this pattern can obtain high color purity, red, green and blue light emitting device trichrome different aging characteristics,color lcd display module the color purity will change over time.
Encapsulated OLED device performance characterization tests must be carried out, mainly brightness - voltage curve and the current density - voltage curve. The steeper the curve rises, the brightness with voltage, current density with the faster voltage rise, the luminous efficiency will be higher.

Analysis of the oled module electrode production process

Production process of the metal electrode and the organic material film to the vapor deposition chamber is isolated from the vacuum chamber for. Since the metal electrode is more active with a low work function metal, the organic material film after evaporation deposition process, do not allow the organic material film with the substrate is exposed to the air,mini lcd module to move the metal electrode deposition chamber.

Metal electrodes are used Mg / Ag, Mg: Ag / Ag, Li / Al, LiF / Al, etc., Mg / Ag to form a film by co-evaporation method, an evaporation method other layered, general metal vaporization temperature of the material 450 ℃ -1200 ℃ high temperature, so to prevent the metal evaporation source heat radiation of the organic material film on the substrate the adverse effects of the substrate temperature controlled at 80 ℃. For the alloy to be deposited metal electrode, after treatment, the alloy metal electrode film above and then coated with a noble metal film, such as Mg: Ag (10:1) alloy coated with a protective layer of silver, making Mg: Ag / Ag, the Li / Al became Li: Al / Al. In the vapor deposition of organic material film and the metal thin film 10 ⁻ ⁵ Pa to maintain the vacuum above, otherwise it will affect the organic material film and the metal thin film quality and lifetime of the device.
OLED device anti-aging treatment

OLED devices and metal organic thin film and the oxidation of water and air will immediately deteriorate,Coding System lcd module we must take measures to avoid this problem. Protection Act can be inorganic membranes and inorganic membrane protective materials are silicon nitride, magnesium fluoride, indium oxide, etc., using resistive heating method or magnetron sputtering inorganic protective film material. After the formation of the protective film, to produce a device to be packaged, the packaging process must be in anhydrous oxygen-free inert gas, packaging materials including adhesives and the cover material. Using an ultraviolet curing adhesive or heat-curable epoxy curing agent, covering materials and glass cover, the cover installed inside the desiccant to absorb residual moisture.

Self-leveling epoxy coating introduction Character LCD Modules

Clean-resistant epoxy self-leveling epoxy floor coating is a coating film-forming material, and then by adding a curing agent, non-volatile reactive diluents, additives and pigments and fillers preparation of a solvent-free high performance coatings. Epoxy self-leveling coating film forming process is a chemical method, first the soluble low molecular weight epoxy resin is coated on the substrate surface, graphic lcd modules leaving the reaction between molecules to further increase the molecular weight or the formation of crosslinking tough film. Where the optional requirement epoxy resin can be at room temperature deposition, and the coating film is required to have a viscosity relay, strong mechanical strength, chemical resistance and good electrical properties.
Comparison of domestic self-leveling coatings
Coating after the construction can achieve smooth feature called leveling, leveling coating applications is a very important issue, and it affects the apparent gloss coating, when the paint brush to the substrate, will leave brush marks, this brush marks may be due to the flow of paint dried before mitigated. When the coating is poor leveling, can be seen with the naked eye in the case uneven coating. When the difference to the naked eye can not see, at this time, said the film is flat, Graphic LCD Display smooth coating to the uneven gravity is not the driving force, but the surface tension, under normal circumstances, leveling can be used ORCHARD formula evaluation. Theoretically, the lower the viscosity paint or coating the thicker the better leveling. Because self-leveling coatings particularity, the general requirements of the film after the film has good leveling, while simultaneously maintaining good surface properties. Throughout the current domestic and self-leveling epoxy material system, there are two main technical guiding ideology, one of many domestic manufacturers generally use the guiding ideology (A class), A class technology theme is: the use of an appropriate amount of solvent to achieve Good leveling coating, the coating process, the coating of filler will gradually decline, the cured film has good leveling, but the surface hardness, wear resistance is poor, while in the construction may be will produce more spots such as lack of surface flaw, which is one-sided pursuit of leveling results; Second, foreign technology and many other manufacturers follow (B class), while class B self-leveling resin coating is to ensure good leveling while still maintaining the uniformity of the filler, the cured coating film so as to ensure better apparent decorative.

GMP compliant technology of epoxy self-leveling coatings Character LCD Modules

With modern industrial technology and production development for cleaner production have become increasingly demanding, requiring workshop floor corrosion and wear clean indoor air as a low dust content, such as food, tobacco, electronics, Graphic OLED Display precision instruments instrumentation, pharmaceutical, medical operating rooms, cars and airports and other manufacturing production sites, require clean workshop. This is not only the demand to improve working conditions, more modern product quality assurance. At present many foreign clean workshop floor usually whole polymer surface layer, which is basically a technique called "self-leveling paint" based materials, due to the general case of a chemical substrate for the epoxy coating, so the domestic generally known as "self-leveling epoxy coating" (epoxyself-levellingflooring), which is a weaker material dust analysis. Currently in the country by many manufacturers and users to accept and use, especially in the pharmaceutical industry began in the 1996 National Medical industry implementation of GMP manufacturing standards, including a basic level of hardware production is clean floors.
Epoxy self-leveling epoxy coating is a film-forming material, by adding various additives, pigments, fillers and other processed, has the following characteristics: ① paint self-leveling is good,lcm module  a film in more than 1mm, Construction is simple; ② coating with tough, wear resistant, non-toxic non-combustion characteristics; ③ smooth surface, with good decoration, cleanliness requirements to meet the 100 level.

Clean plant ventilation engineering controls Character LCD Modules

General plant operating environment of harmful substances generated in the generating source will spread through the propagation path of the job, and they therefore operating environment from the generating source control strategies, dissemination and acceptance of the diffusion path by three aspects of exposure to exercise control, Character LCD Module to the extent that Engineering control point of view, it is best to place the occurrence of pollutants polluting substances will be controlled by the nearest treatment, to avoid spread of harmful substances. In order to ensure the safety and health staff and good working environment, should be engineering to improve its operating environment for harmful gases, vapors or dust, etc. The improved operating environment, can be combined with one or two kinds of ways to address hazardous substances exposure hazard.
First, the overall ventilation system
Plant anti-ventilation control mode ventilation primarily as a whole (dilution ventilation) and local exhaust two main forms. Where ventilation is the most basic type of overall ventilation system, its main function is to provide fresh outside air at the workplace, workplace hazardous dilute the concentration of harmful substances and by the flow of air from the outdoors. Therefore the relationship between air and harmful substances, the overall ventilation consists of two basic mechanisms: mixing and displacement. The former so that fresh air and polluted air mixture to achieve dilution effect, the latter is replaced by the contaminated air with fresh air.lcd module  In occupational safety and health regulations, decrees concerning ventilation ventilation devices are set on the overall timing, principles and basic performance requirements vary specifications. However, the air flow pattern in the room, the ventilation performance of the overall impact of a quite significant, and often can not be certainty factor. Indoor geometric state, cubicles, equipment, furnishings, temperature, pressure distribution, intake and exhaust port configuration and human caused deliberately forced ventilation are all factors that influence indoor air.
Overall ventilation in different occasions for different interpretations and calculations. Such as to control indoor air quality (Indoor Air Quality, IAQ) as the goal, the overall ventilation is to provide fresh air to maintain proper temperature and humidity in order to achieve a comfortable purpose; while controlling operating environment is the prerequisite of fresh air dilution when ¸ places polluted air, in order to achieve the purpose of industrial safety and hygiene. As the air from the high pressure to low pressure with the flow characteristics, in order to consider the plant's distribution and airflow poorly ventilated place to avoid the accumulation of harmful substances, generally we all hope to send, mechanical ventilation are implemented and enforced by the air supply, exhaust pipe system design arrangements to dilute the concentration of harmful substances, such as properly designed on the occurrence of a small amount of low concentrations of widespread non-toxic or low toxic pollutants exclude extremely effective. ¸ pollution control effectiveness in accordance with the United States Institute of Industrial Safety and Health ACGIH (American Conference of Governmental Industrial Hygienists) study, the overall ventilation less suitable for the workplace dusts or fumes, which are usually larger because of its toxicity. If you need to use a whole lot of ventilation equipment ventilation and general dust, fume generated a large amount of speed, and therefore vulnerable to localized high concentrations of circumstances, this device can not be controlled. So this is not a ventilation system ventilation design engineers will first consider the use of the design, but this device for generating source pollution harmful or even widespread occurrence of uncertain location of the position, as a very practical in the solution. Consider different sources in different environments required overall ventilation design, we must first consider the calculation of the amount of ventilation, the current overall ventilation ventilation calculation method according to (1) the number of the operator (2) in the workplace space (3) evaporation rate is subject to limits (Threshold Limit Value, TLV) and the minimum Explosive Limit (Lower Explosive Limit, LEL) and other different conditions were estimated.

Clean engineering perception of quality requirements

Part of the decoration
An indoor ceiling
Zha ceiling
Ensure that the project:
Zha installation must be solid, no delamination, warping, fracture, missing Lenz off angle and other defects. Girder, joists (reinforcement, horizontal brace) must be installed in the correct position, securely connected, no loose.
Basic Project
⑴ Zha surface
Qualified: surface smooth, clean
Excellent: smooth surface, clean, color, pollution, anti-rust, pitting, and hammer India
⑵ seams or batten
Qualified: joints uniform width; layering straight, no warping
Excellent: seams the same width, neat; layering the same width, straight, tight joints
⑶ wood skeleton boom, main beam, joists (vertical bars, horizontal brace) Appearance
Qualified: a mild bend, but do not affect the installation; wooden boom without splitting
Good: straight, no bending, no distortion; wooden boom without splitting
⑷ filler
Qualified: materials dry thickness to meet the requirements laid
Excellent: In qualifying, based on uniform thickness
⑸ gray metal mesh lath and plaster layer
Qualified: gray lath nail knot securely, fitting in the joists (studs) on the size of the gap to meet the requirements; wire mesh nailed joints in the joists (studs) on
Good: On the basis of qualified, gray slats staggered, head seam size to meet the requirements; metal nail flat, no Alice
Tolerance Project:
Qualified: smooth surface, vertical elevation, layering, straight seams, joints height difference, layering consistent spacing and other projects to meet the allowable deviation value most parts of the
Good: the vast majority of these projects meet the allowable deviation value parts
Second, the interior wall
Install the cover panel and wood frame wall
See cover panel ceiling indoor ceiling
Third, the doors and windows
Aluminum alloy doors and windows
Ensure that the project:
Aluminum alloy doors and windows and their accessories must meet the design requirements and quality standards of the relevant provisions; aluminum windows and doors installation location, open direction, must meet the design requirements; aluminum door frames must be securely mounted; embedded parts of the number, location, laying connected Methods and preservative treatment must meet the design requirements
Basic items:
1. Doors and windows installed fan
⑴ swing casement
Qualified: closed tight, the gap substantially uniform, flexible switch
Excellent: closed tight, the gap uniform, flexible switch
⑵ sliding doors and fan
Qualified: closed tight, the gap substantially uniform, fan frame overlap with the design requirements of not less than 80%

Excellent: closed tight, uniform gap, fan amount of overlap with the frame meets the design requirements
⑶ spring leaf
Qualified: Automatic positioning accuracy, opening angle of 90 ° ± 3 °, closing time in the range of 3 ~ 15S
Excellent: Automatic positioning accuracy, opening angle of 90 ° ± 1.5 °, closing time at the range of 6 ~ 10S
2. Aluminum windows and doors accessories installation
Qualified: accessories complete the installation firm, flexible and suitable to achieve their respective functions
Excellent: accessories complete, the installation location is correct, solid, flexible application, to achieve their respective functions, correct appearance
3. Aluminum door frame and the wall to fill the gap between the quality inlay
Qualified: caulking full, packing materials meet the design requirements
Good: caulking full dense, smooth surface, smooth, without cracks, caulking materials, methods meet the design requirements
4. Appearance quality aluminum windows and doors
Qualified: surface clean, Omo no scratches, bumps, rust, coating Omo smooth, nonporous
Good: The surface clean, no scratches, bumps, no rust; adhesive smooth surface, uniform thickness, nonporous
Tolerance Project:
Qualified: door window two diagonal length difference, door frames positive side vertical levelness, double doors inside and outside the box center distance; casement window box fan with lap width difference, with the doors and windows adjacent tang cross fan end angle height difference; sliding doors opening force limit fan, window boxes or adjacent fan with fan standing seam parallel; spring leaf doors or fans with their counterparts seam between the frame stand, transverse left seam limits, doors and Ground clearance left seam, sew closed flat leaf counterparts and other projects to meet the allowable deviation value most parts of the
Good: the vast majority of these projects meet the allowable deviation value parts
Glass
Ensure that the project:
Glass tailoring the correct size,320x240 lcd module installation firm, smooth, non-loosening
Basic items:
⑴ wiping putty to fill
Qualified: plump bottom ash, putty and glass, wire mouth firmly bonded, the edge is flush with the cut mouth
Excellent: In qualifying, based on the putty into a figure eight corners, smooth surface, no cracks, pockmarked face and wrinkled skin
⑵ fixed glass nails or steel Szymborska
Qualified: nails, clips quantity, specification compliance
Good: On the basis of qualified, nails, clips putty surface is not exposed
⑶ studded wooden batten
Qualified: wooden batten and cut close to the edge of the mouth, cutting corners neatly
Excellent: wood bead rim stickers with flush cutting, cutting corners neat, tight, do not reveal the nail cap
⑷ rubber mat inlay
Qualified: rubber mat and cut mouth, glass and bead close
In qualifying, based on the neat line
⑸ glass tiles installed
Qualified: Arrange the correct position, dense mosaic
Excellent: Low Temperature Display In qualifying, based on the arrangement of uniform, neat, uniform straight seams
⑹ colored, patterned glass assembly
Qualified: color, pattern design requirements

Lighting liquid crystal TFT Display Module device

The liquid crystal display is a passive display device, itself does not light, modulated by the external light to achieve TFT Lcd Modules, so that light is a liquid crystal display applications, the key technology. Lighting is generally divided into natural lighting, external lighting settings and projection light source.
Natural lighting
The easy use of natural light, the cheapest, but also not a good way of energy, most of the time, counting, LCD portable instruments are dominated by natural light. Its natural daylighting technologies include:
(1) illumination for optimal viewing. Common perspective of different products in different directions, the direction of the liquid crystal display device optimal viewing angle can be consistent with the commonly used.
(2) try to highlight the Graphic LCD Module window. The LCD window design as much as possible up front can be.
(3) Flexible look outside light. The instrument design into a flat, handheld, easy to use when looking for outside light.
(4) to avoid light interference. For some reflection type liquid crystal display device, in addition to pay attention to find outside light, the need to avoid fluctuations in the surface of the light caused by light interference.

Connecting technology of liquid crystal TFT Display Module device

Liquid crystal COG LCD Module device by the two glass. The outer lead is attached to the surface of the transparent conductive film made of photolithography, can not use the conventional welding processes. Currently there are connection process:
1, the conductive rubber connector
This is a more traditional way. Conductive rubber strip all known as zebra conductive rubber strip is determined by a layer of conductive rubber, a layer of insulating rubber white laminated into a very thick one, and then in the direction perpendicular to the surface of the rubber strip cut into strips. When used, just outside the lead and the liquid crystal display circuit board traces correspond neatly side, the Zebra caught in the meantime, to fix them. To do this, we must make a pressure box. Pressure frame material shape can be any design, but must ensure that there is a pressing amount to about 0.2mm, the need to ensure that the pressure uniform, not bent.
2, the metal pin connector
Stamping into the metal pins, the first liquid crystal display which plug member fixed to the end of the outer lead, to the user, or when soldered or plugged into the circuit board.
These two methods more used digital type, the outer lead much (line pitch> 1.25mm or more) of the liquid crystal display device.
3, hot film flexible connection
Calculators and digital communications equipment commonly used. Its hot conductive connection with a polyester film, in the intervals of graphite printed on a thermal conductive adhesive strips and insulation. When used, the end of the alignment of the liquid crystal display device of the conductive strips of the outer lead securement, plus potential, pressure, and the other end of the conductive stripe aligned snapping lead terminal board, heat and pressure can. Since it takes a certain pressure and temperature, so users need to configure a dedicated hot press.
4, the anisotropic conductive adhesive connections
The so-called anisotropic conductive adhesive is shown in Figure 1 as a hot film. Interspersed with gold plated film in plastic balls, to be sandwiched between the LCD and PCB heat and pressure, the lead because of the thin film pressure, and connected by a conductive plastic ball, since the lead spacing, so it will not horizontal concatenation. So called anisotropic conductive connection. Also known as TAB connection. This connection can easily connect line spacing device is only 0.1mm. Is the high density and large amount of information necessary for connecting liquid crystal lcd module technology. Because it requires precision alignment and precise pressure, temperature control, you need to set the price of expensive special equipment job.
Connection with TAB method the chip directly on the liquid crystal display device on the glass COG mounting method, the pressure in the chip from the board COB hard wire and the chip mounting pressure in the flexible circuit board COF mounting.

LCD oled module design should pay attention to several issues

With the rapid development of information industry, as one of the terminals of the LCD information display device has also been an unprecedented development. In the FPD (Flat panel display) devices, LCD with its light, thin, small, and low power consumption and thriving.
For LCD driver circuit is configured to form a LCD module LCM (Liquid Crystal Module). In addition to its basic component parts LCD, driver circuit and connector outer Usually, backlight. TFT LCD Display in the same system as other circuits, has a simple interface, and provides a wealth of control display instruction system.
Contrast
Contrast is the description of a display device in the display when the foreground (such as display text, graphics, etc.) and the difference in brightness between the background the size of a volume.
● driving waveform to improve
As a general module circuit design is relatively simple, no electromagnetic interference analysis. However, the product at high duty cycles, the oscilloscope can be found in the chip of the output waveform tends to become poor, the contrast of the display which have a certain extent. In order to change this situation, each resistor in the bias circuit capacitor in parallel with a 0.1μF can improve the output waveform.
To output B-wave chips COM line as an example. In the absence of additional capacitance and a half before the selection point selection point voltage waveform has distortion, distortion can cause severe crosstalk display contrast, the waveform shown in Figure 2. Increase the capacitance, the waveform would have been greatly improved.
● Working frequency problem
In actual debugging a display capacity of 128 × 64 dot matrix display module samples, discovery module in interlaced OLED Display Module, the display was pale, contrast is poor. The analysis that there are two ways to solve. First, adjust the module RC oscillator circuit, reducing the resistance R, the oscillation frequency is increased from 47kHz down to 20kHz; Second, in the bias circuit section to be the driving circuit (as described above). Both approaches achieve the desired effect. But the first approach due to lower operating frequency module, which will display the frequency is also reduced Zhen, which resulted in the entire LCD screen display when the same as the TV screen flicker generated phenomenon, which under fluorescent light observation easier to find, but in natural light or incandescent display is pretty ideal, in the actual commissioning according to the actual situation, select the

Overcome cross effects Character LCD Modules

In the dynamic drive mode, to make such a position (i, j) point display, on the need in the i th column and j th row selection voltage is applied at the same time, so that the point of the maximum electric field strength, but this time in addition to (i, j) points, the i-th row and j th row of the remaining points can withstand a certain voltage, these points are called semi-selected point. If the semi-selected point of the effective voltage is greater than the threshold voltage, there appears on the screen should display the contrast decline, which is cross effects. The way to solve the cross effect is the average voltage method, that is, the semi-selected point and non-selected point average of the voltages, an appropriate increase in the non-selection voltage to offset the point on the semi-selected point of the voltage, the semi-selected point on the voltage drop, improve display contrast.
Pixel Control
Pixel by pixel register and a status bit is uniquely determined. There are 16 pixel lcd module registers to control up to 4 × 29 = 116 pixels. We use the LCD from 8 × 8 = 64 pixels. Thus, the pixel data register is sufficient.
Segment Enable
Segment code is enabled by LCDSE registers. Because VIM807-2 is eight 7-segment display, and our choice is 1/3 duty cycle (ie, three common), so by LCDSE register must choose 3 × 8 = 24 segments in order to meet the need, namely complete expression All of the code segment pixels. Of course there will be superfluous, 8 × 9 = 72, because every three commons and 3 above can express 9 pixels.
LCD drive voltage generating
LCD drive voltage is generated in two ways, the internal charge pump method or external resistor ladder network method. Since the Character LCD Module charge pump is in development, in order to reduce design risk, we use a more sophisticated method of external resistor ladder network. Using an external resistor ladder network, VGEN (LCDCON <4>) should be cleared.

LED TFT Display Module software environment

graphic lcd display module on the different properties of the display should be configured to meet the functional requirements of the display software, which has the following features:
a. comply with serialization and standardization requirements, can backward compatible;
b. using the detail specification of the operating system and language;
c. equipped with a sound self-test procedure and be equipped with various levels of diagnostic procedures;
d. PARTICULAR PURPOSE LED display with their corresponding special software.
Structure and appearance
Structure: COG LCD Display section are available in steel, aluminum, wood and other materials. Requirements rugged and beautiful.
Appearance: LED Display frame no scratches. Outdoor LED display pixel pipe installation should be the same, no loose and broken shell column.

Character LCD Modules performance characteristics

According to different types of LED display, OLED modules performance characteristics of the inspection, should meet the requirements of 5.5. Text, graphic LED display shows the test software used by visual inspection moved out of the way and show
Way. LED display on the computer video through visual, computer animation screenings compared with checks animated features, computer monitor with LED display and text display for the inspection function, with special test software
Check its grayscale function. LED display on the TV video in addition to the animation, text, grayscale function tests, should also check the TV with a video source and video functionality. A variety of lcd graphic display market, you should use the appropriate measuring
Test software to check its market display.

LCD panel segment oled module

A liquid crystal panel section of the module (lcm module): panel process can be divided into three stages, first semiconductor processes preceding (array), that is, the transistor is a thin film layer on the glass substrate made, compared with the middle of the liquid crystal filling assembly Process (cell), that is, the color filter layer of glass and glass film transistors, together, poured into a liquid crystal intermediate.
Again is the posterior segment, namely panel module, which is behind the cell plus backlit panels, iron with some IC components, a so-called panel module. Front and middle panels are highly automated process, the Taiwan authorities banned mainland investment projects. As for the rear section of the assembly, it is based on manpower to assemble.
Since LCM plant requires a lot of labor and labor, therefore located in the continent. lcd module is the Taiwan authorities to allow panel makers set up plants in mainland China only project.

Liquid crystal mixture preparation TFT Display Module

a. A liquid crystal composition and the requirements of a monomer preparation and composition of the mixed liquid crystal display device based solely determined by the requirements, generally speaking, TN device used for material requirements is relatively low, can be used, and for the preparation of such liquid crystalline monomer. Of course, a wide temperature range, low threshold voltage to increase a TN display materials, such as monomer. TFT Display Module
STN-LCD liquid crystal material properties required to be higher, usually a monomer selected of the following categories:
(A) phenyl cyclohexane type generally have lower viscosity of these compounds, such as molecular structure having three or more rings, the clearing point is high, increase in the modulation plays a clearing point temperature.
(B) biphenyl, pyrimidine and acetylenes because they have higher refractive index, can be prepared in a mixed system Δn desired value.
(C) contains a non-aromatic ring and a short-chain alkyl or alkoxy groups of liquid crystal compounds are typically large K33/K11 values.
(D) ethane compound has low viscosity class.
Most of the current super-twisted material selection phenyl cyclohexane classes and ethane-based liquid crystal as the main ingredient.
An active matrix display (AM-LCD) require higher liquid crystal material, in addition to low viscosity, but also requires a high resistivity, high charge retention and suitable dielectric anisotropy. Many of the current synthetic fluorinated liquid crystal material can basically meet its requirements.
b. In general mixing method, first select the appropriate low melting and nematic liquid crystal as a basic mixture ranges, some of which may be polar, non-polar other, which allows to change Δε; taking care to avoid generating near crystalline phase. These components should be selected by the requirement Δn control. If required low threshold, then the mixture should be added to the basic compound high Δε value. So, Δε / ε ⊥ adjustment ratio is even more difficult, but can also be added to change their materials. Then, often use additives to improve the definition highlights mixture clearing point. After several repeated so you can get the recipe mixture. Wherein each of the mixture components are to contribute to the final properties. Character LCD Display
Mixture formulation can also use the addition rule, based on the device performance and the relationship between material parameters, using a linear induction election to be determined by its optimization.
In the mixed crystal, due to the viscosity of the liquid crystal is relatively large (some are solid at room temperature), it must be heated to a crystal clear point, with mechanical stirring, magnetic stirring or ultrasonic methods such as mixed evenly. Stirring should be dust, moisture or dry protective atmosphere.