Backlit LCD and TV options for the LED driver IC oled module

Light-emitting diode (led) the inherent quality that it can replace the cold cathode fluorescent lamps (CCFL) as the next generation of televisions, desktop and notebook display backlight solutions. The power LED is much smaller than CCFL, five times longer life than the latter, more efficient and thinner thickness of the display, brightness adjustment fineness smaller, the low-voltage drive, and more environmentally friendly in itself, because the LED and CCFL different, It does not contain mercury or other harmful substances. However, all these features are only in the LED backlight driver IC between the array and the match after a good play to get full. Therefore, designers only in understanding the key driver IC features and functionality, the application needs in order to choose the most appropriate driver IC. Look at the driver IC data sheet, you will find there are many parameters to consider, this article will introduce the parameters and functions is one of the most important.serial display modules

Parameter
The first of these specifications is the driver IC can accept input voltages. If the input voltage range is narrow, it can be applied to a relatively small range. In addition, such an IC chip may not withstand a large input voltage swing, and there is always in use, a number of other transient conditions.
The maximum output voltage driver chip is also very critical, because each LED will produce 1 ~ 4V voltage drop. Driver chip must have sufficiently high output voltage to provide a plurality of LED array, the voltage drop generated. Maximum output voltage and the number of channels it can support the decision of the LED number.
This conclusion also applies to driver chip to be able to provide the maximum current of each channel. It provides a current to be matched with each design, focusing on the use of the LED type.
Most portable applications used in LED requires 20 ~ 30mA of current, and the LED display and TV often consume 40 ~ 120mA (However, in some applications requiring up to 350mA LED current). Generally, the output voltage and output current as large as possible, but to note, high output driver chip cost is usually higher than the low output of similar products, so the driver chip for exact match and application design cost savings .16x2 oled
Driver IC is the number of channels available from a few to 16, or even more. Select several channels "right" driver chip is completely determined by the system requirements. The goal is to use as little as possible to meet the system requirements driver chip to reduce costs and complexity.
However, the driver chip series LED quantity can support not only depends on its number of channels, but also on the chip's maximum output voltage. For example, the low output voltage 16-channel driver IC can support 80 LED, may only support 5 LED series; while the high output voltage 10-channel driver IC can support 160 LED, may only support 16 LED series .