当前越来越多的液晶显示器都朝着低功耗的方向发展,而降低功耗的直接方法是减少作为光源的LED数目及功耗,但因LED颗数变少,使LED间距增大而产生hot spot.为解决这个问题,文中在不改变LED与导光板之间空气层的前提下,增大相邻LED之间间距,达了到很好的混光效果.由于LED入射导光板的光入射角增大,解决了在LED背光模组的hot spot现象,使均匀性得到最大程度的改善,这一研究对于提高低功耗液晶显示器显示效果具有一定的参考意义.%Currently, more and more liquid crystal displays are towards to the low-power, which the effective method is reducing the number of LEDs as the light source. However, as the decrease of LED pixel, hot spot will increase fast. To solve above problem, without changing the distance between LED and guide plate, and with increasing the distance between LED and LED as well as incident angles of guide light plate, light in guide light plat is completely mixed by using this method, and light uniformity is much more improved. Hot spot in the LED backlight module are also solved. This research has good significance for LCD display.
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