LED Design Using for Large Dimension LCD Backlight

Usually, CCFL is used as the back light sources for the traditional thin film transistor liquid crystal display. Now, among several light sources for LCD backlight, LED is the most competitive one. The paper analyses the performance of LED and designs a new LED for large area direct LCD backlight,which is simple and has a good performance. In order to test the LED designed by us, we design a 26′ LCD backlight finally. The simulation result indicates that the performance of the LED designed by us is good enough to meet the requirement of LCD backlight about luminance uniformity and color balance