彩色液晶显示器件色差补偿优化  

Compensation and optimization of chromatic aberration for color LCD device

作　　者：占红明[1,2,3] 徐征[1,3] 董学[2] 陈明[2] 金雄[2] 布占场[2] 邵喜斌[2] 李成圭[2] 

机构地区：[1]北京交通大学光电子技术研究所,北京100044 [2]京东方科技集团股份有限公司产品开发中心,北京100176 [3]北京交通大学发光-9光信息技术教育部重点实验室,北京100044

出　　处：《液晶与显示》2014年第6期916-921,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：国家重点基础研究发展计划(973计划)项目(No.2010CB327704);国家自然科学基金(No.51272022);教育部新世纪优秀人才支持计划(No.NCET-10-0220);中央高校基本科研业务费专项资金(No.2012JBZ001)

摘　　要：为了改善彩色液晶显示器件的色差,提升画面品质,针对(128,192,192)灰阶图形下色差的问题,对色差产生的机理进行了分析。模拟了RGB三色像素透过率对该图形下色差的影响。通过分别调整RGB彩膜膜厚,不仅相对调整了三色像素下的液晶盒层厚,而且还调整了三色像素的透过率,改善了RGB的Gamma曲线,对色差进行了补偿优化。实验结果表明,增加G像素和减小B像素的液晶盒层厚,对色差有明显补偿改善效果;同时,当RGB膜厚保持不变时,色差与液晶层厚呈正比关系,液晶层厚每减小1%时,色差约降低0.2。当RGB三色液晶盒层厚从(3.47,3.38,3.4)μm分别调整到(3.5,3.45,3.36)μm和(3.5,3.44,3.28)μm时,(128,192,192)灰阶图形下样品色差平均值从13.8分别降低到12.8和12。通过分别调整RGB彩膜膜厚,相对调整了三色像素下的液晶层盒厚和液晶量调节,可以一定程度优化补偿色差。In order to improve the chromatic aberration in color LCD device and enhance the display quality,the effect of RGB transmittance on chromatic aberration was simulated for a particular patternof（128,192,192）gray scale.By respectively adjusting the thickness of RGB film,not only the relative cell gap of RGB was tuned,but also the transmittance of RGB was adjusted to improve RGB gamma curves,and chromatic aberration was compensated and optimized.Experimental results show that the increase of G and the decrease of B in cell gap,can obviously improve chromatic aberration.Meanwhile,when the thickness of RGB keeps no change,chromatic aberration is proportional to cell gap of liquid crystal.Cell gap reduces by 1%,chromatic aberration correspondently decreases about0.2.When the cell gap of RGB changed from（3.47,3.38,3.4）μm to（3.5,3.45,3.36）μm and（3.5,3.44,3.28）μm,the average chromatic aberration of sample was reduced from 13.8to 12.8and 12 in the pattern,respectively.Thus,chromatic aberration can be compensated by separately adjusting the relative thickness and cell gap of RGB.

关 键 词：色差 液晶显示 层厚 灰阶 

分 类 号：TN27[电子电信—物理电子学] O432.3[机械工程—光学工程]