对液晶显示来说,与静态背光源相比, 直下式动态背光源具有多种优点.提出了一种基于LED的直下式动态背光源结构,将单个LED发出的光投射区域限制在散光膜的单一区域,即每个LED只负责液晶部分区域的背光照明.基于该结构,对240 mm×180 mm尺寸的背光源仿真结果进行了理论分析,结果表明其亮度均匀度达到93.1%,ΔU′V′小至0.003 545,完全满足背光源应用要求.
参考文献
[1] | Folkerts W.LED backlighting concepts with high flux LEDs[J].SID Symposium Digest,2004,35(1):1226-1229. |
[2] | Martynov Y,Konijn Huub,Pfeffer Nicolo,et al.High-efficiency slim LED backlight system with mixing light guide[J].SID Symposium Digest,2003,43(1):1259-1261. |
[3] | 汪敏,夏咸军.新型LED背光源技术及应用[J].光电子技术,2005,25(4):267-270. |
[4] | Yoon Jae-Kyeong,Kim Ki-duk,Kong Nam-yong.LCD TV Comparable to CRT TV for moving image quality-world's best MPRT LCD TV[J].Proceedings of SPIE,2007,6493:64930E(1-10). |
[5] | Seyno Sluyterman.动态扫描背光使LCD电视呈现活力[J].现代显示,2006,63:18-21. |
[6] | 梁萌,王国宏,范曼宁,等.LCD-TV用直下式LED背光源的光学设计[J].液晶与显示,2007,22(1):42-46. |
[7] | Chao Paul C P,Liao Lun-de,Chiu Chiwei.Design of a novel LED lens cap and optimization of LED placement in a large area direct backlight for LCD-TVs[J].Proceedings of SPIE,2006,6196:61960N(1-9). |
[8] | (日)大田登.色彩工学[M].刘中本,译.西安:西安交通大学出版社,1996. |
[9] | 鲍友南,潘奕凯,姚柏宏,等.TV用液晶显示器之背光模组技术[J].机械工业杂志,2003,245:158-169. |
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