大尺寸液晶电视用LED背光源的设计与制作  

Design and Fabrication of Large Size LED BLU for LCD TV

作　　者：刘敬伟[1] 王刚[1] 马丽[1] 张凯亮[1] 张丽蕾[1] 王庆江[1] 万丽芳[1] 

机构地区：[1]京东方科技集团股份有限公司中央研究院,北京100016

出　　处：《液晶与显示》2006年第5期539-544,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：北京市科委科技计划资助项目(No.D0306006000091)

摘　　要：设计和制作了一款66cm(26in)液晶电视用LED背光源。模拟出LED的光学分布,以此为基础模拟出LED阵列的光强和颜色分布,得到适合的背光源厚度尺寸。在实际制作中,采用高效的驱动电路对LED阵列进行驱动,利用铝制散热片为背光源提供必须的散热。测试的结果,在整体背光源功耗为150W时,中心亮度达到13390cd/m2,均匀度为84.1%,色彩还原性达到NTSC标准102%,远远超过CCFL背光源的70%。A 66 cm（26 in） LED BLU for LCD TV was designed and fabricated. Based on the light distribution of LED, the brightness and color distribution of BLU were simulated, and a suitable thickness was obtained accordingly. LED array was lighted by a high efficient driver circuit, and cooled by an aluminum based thermo diffuser. As results, the central brightness of the BLU was tested to be 13 000 ed/m^2 with a uniformity of 84 % at 150 W power consumption. The color gamut of LCD module with the LED BLU was about 102 % which is much higher than the value of 70 % for normal LCD with CCFL BLU.

关 键 词：LED 背光源 液晶电视 

分 类 号：TN312.8[电子电信—物理电子学] TM923.01[电气工程—电力电子与电力传动]