为减少混光距离进而获得超薄直下式 LED 背光模组，提出一种具有逆棱微结构的扩散板.对这种逆棱微结构进行了光学理论分析，证明了该结构在降低混光距离方面具有可行性.对逆棱微结构扩散板的光学效果进行了实验验证，并用于81.3 cm(32 in)LED 背光模组.实验结果表明：该结构扩散板可有效增大灯影光圈，相对无结构扩散板，光圈直径增大约10％；在达到相同混光效果时，具有该结构扩散板的混光高度降低；采用该逆棱微结构的扩散板的背光模组混光高度由13 mm 降低至11.8 mm.采用具有逆棱微结构的扩散板有助于实现 LED 背光模组的超薄设计.
In order to reduce optical distance (OD)and realize ultra-thin design of direct-lit LED back-light module,this paper proposes a kind of diffuser plate with prism-based micro-structure on the bot-tom.The optical theoretical analysis is first performed on the prism-based micro-structure,which proves to be feasible to reduce the OD.The prism-based micro-structure is then practically tested and utilized in 81.3 cm (32 in)LED backlight.Experimental results show that the diffuser plate with prism micro-structure has effect on increasing the diameter of LED shadow by about 10% and reducing OD.The OD of the prototype with 32 in LED BLU is reduced from 13 mm to 1 1.8 mm.Such diffuser plate with prism-based micro-structure can help to realize the ultra-thin design.
参考文献
| [1] | Zukauskas A;Shur M;Gaska R.Introduction to Solid-State Lighting[M].New York:Wiley,2002 |
| [2] | Bergh A A;Dean P J.Light-emitting diodes[J].PROCEEDINGS OF THE IEEE,197260(02):156-223. |
| [3] | Engelsen D;童林夙.背光源的发展趋势[J].光电子技术,200626(02):74-80. |
| [4] | Wu S T.Next generation LCD technology[J].J ournal of Information Display,201026(01):3. |
| [5] | 王文根;李瑛;王秀如.大尺寸 TFT-LCD 的 LED 背光技术[J].现代显示,2006(08):59-63. |
| [6] | 肖箫 .用于 LCD 的 LED 背光源配光设计[D].广东:华南理工大学,2012. |
| [7] | 庄四祥;钱可元;李旭亮.白光 LED 对直下式 TV 背光色域的影响[J].液晶与显示,201126(04):474-479. |
| [8] | 冯奇斌;何会杰;张伟伟.用于侧出式发光二极管背光的全局动态调光算法[J].光学精密工程,201220(07):1455-1462. |
| [9] | 范曼宁;张国义;郝茂盛.一种高亮度直下式背光液晶模组设计[J].光电子技术,201231(03):162-165. |
| [10] | 陶梅.LED 光源透镜相关专利简介[J].中国照明电器,2012(05):32-33. |
| [11] | 郝剑;刘华;孙强.LED 自由曲面准直透镜的优化设计方法[J].激光与光电子学进展,2014(03):175-180. |
| [12] | 薛涛;苏成悦;张康.基于扩展光源的 LED 小角度自由曲面透镜设计[J].光学技术,2014(01):45-49. |
| [13] | 董丽;刘华;王尧.紧凑型 LED 配光设计中光源模型可靠性研究[J].光子学报,201443(02):02220031-02220035. |
| [14] | 杜乃锋 .面向大功率 LED 光源三维光学设计方法的研究[D].广东:华南理工大学,2012. |
| [15] | 李澄;李农.一种用于均匀照明的 LED 透镜设计方法[J].照明工程学报,2010(03):46-49. |
| [16] | 王晓伟 .挤出滚压法制备聚合物微结构成型技术的开发与研究[D].北京:北京化工大学,2011. |
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