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1. 上海交通大学 物理系 上海,200240
2. 3M中国有限公司 上海,200233
Received:20 August 2012,
Revised:24 September 2012,
Published:15 December 2012
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周羲君, 冯仕猛. 均匀照明LED背光板设计[J]. 液晶与显示, 2012,(6): 774-779
ZHOU Xi-jun, FENG Shi-meng. Design of High Uniformity LED Backlight[J]. , 2012,(6): 774-779
周羲君, 冯仕猛. 均匀照明LED背光板设计[J]. 液晶与显示, 2012,(6): 774-779 DOI: 10.3788/YJYXS20122706.0774.
ZHOU Xi-jun, FENG Shi-meng. Design of High Uniformity LED Backlight[J]. , 2012,(6): 774-779 DOI: 10.3788/YJYXS20122706.0774.
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.
刘钱飞,张小宁,刘纯亮,等. LED背光源亮度均匀性改善方法 [J]. 真空电子技术, 2009,(6):17-04.[2] Munisamy Anandan.Progress of LED Backlights for LCDs [J].Journal of the SID,2008,16(2):287-310.[3] 应根裕,胡文波,邱勇. 平板显示技术 [M].北京:人民邮电出版社,2002:21-22.[4] 李郑阳,陈明容.测量发光画面亮度均匀性的方法:中国,CN200710141775.2008-01-09.[5] 季卓莺,邵红,林燕丹.暗适应时间、背景亮度和眩光对人眼对比度阈值影响的探讨 [J]. 照明工程学报, 17(4):1-4,15.[6] 刘波,章小兵.使用多色LED补色的背光源 [J]. 液晶与显示, 2010,25(5):699-701.[7] 申苓.液晶显示器背光源驱动优化的探讨 [J]. 液晶与显示, 2006,21(2):165-168.[8] 李东平,缪春燕,刘丽芳.等.白光LED用YAG:CE3+荧光粉的研究进展 [J]. 液晶与显示, 2005,20(6):526-531.
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