Character LCD Modules defect and technology breakthrough

Due to limitations inherent principle , low temperature lcd display quality in terms of color CRT is still difficult with the same par . We know that the lcd graphic display modules panel itself is unable to achieve self- luminous, but it can play a role in blocking the light , in order to achieve a complete display, a backlight assembly must be designed for it (Backlight) - backlight emits light, after the reflection plate , light guide plate , an optical diffusion sheet , a prism sheet and other auxiliary member is irradiated to the liquid crystal panel , a liquid crystal panel of the electrical drive signal at a precise determined luminous -off of each pixel region , and the color filter role in the formation under different shading , different colors of light output - in the user point of view, is shown on the low temperature lcd display screen, the established color screen. Such works exist many drawbacks : First , relying on the filter in order to achieve color output , and because the driver IC restrictions , early LCD display for each channel can be achieved only 6bit color combinations , RGB three color channels add up to 18 display can show only the total number of 262,144 kinds of colors , which is 24-bit true color has a long distance. Because not show enough color , LCD color display is difficult to achieve a satisfactory level ; secondly , LCD backlight to be able to help the formation of light output , and quality characteristics of the backlight of the low temperature lcd display monitor display quality , use of life expectancy and other indicators have a significant impact . Widely popular backlight type CCFL cold cathode fluorescent lamp, it has a low cost , mature technology , etc., both the performance and stability are proven , but the cold cathode fluorescent tube light sources are light emitted want to spread evenly each region of the panel requires relatively complex support assembly more difficult to control the thickness of the screen . And CCFL backlit color display in terms of mediocre , life is also more general ; once again , the energy efficiency of the backlight low. In the light from the backlight to transfer the screen , the light energy loss is very serious , and ultimately only about 6% of energy use may be true , the energy efficiency is quite low. In order to achieve higher brightness and contrast , manufacturers must increase the output power of the light source lamp or increasing the number of adverse consequences is the machine power up. This has much influence on the desktop LCD monitor or LCD TV will not, but a great influence on the laptop LCD screen . LCD is the highest -power laptop components , in order to maximize battery life , the industry actively develop low-power LCD screen , while the energy efficiency of the backlight is clearly contrary thereto .