Mini LED显示光学性能分析  

Optical performance analysis of Mini LED display

作　　者：杨梅慧[1] 林伟瀚[1] 于海[1] 胡文党 谢沛川 YANG Mei-hui;LIN Wei-han;YU Hai;HU Wen-dang;XIE Pei-chuan(KONKA Group Co.,Ltd.,Shenzhen 518057,China;Shenzhen KONKA Electronic Technology Co.,Ltd.,Shenzhen 518107,China)

机构地区：[1]康佳集团股份有限公司,广东深圳518057 [2]深圳康佳电子科技有限公司,广东深圳518107

出　　处：《液晶与显示》2022年第6期680-686,共7页Chinese Journal of Liquid Crystals and Displays

基　　金：深圳市科技创新委员会资助项目(No.JSGG20201201100401003)。

摘　　要：微间距Mini LED直显屏幕随着光出射角度变大,将产生从正视白场到偏淡红色再到偏淡青色的角度色偏现象。通过测试及计算发现,在50°~60°视角位置出现色坐标拐点。通过光型分析,Mini LED屏幕表面的色偏现象与RGB裸晶片的光型不匹配及光型左右不对称有关。同时由于RGB颜色在介质中的色散现象,红光的逃逸角大于蓝绿光,光线经过介质后红光光型发散程度强于蓝绿光。红绿蓝光强衰减程度的差异引起了出射光的角度色偏现象。With the increase of the outgoing light angle of the micro spacing Mini LED direct display screen,there will be an angular color deviation from facing the white field to light red and then to light cyan.Through test and calculation,it is found that the inflection point of color coordinate appears at the position of 50°~60°.Through the light type analysis,the color deviation on the surface of Mini LED screen is related to the light type mismatch and left-right asymmetry of RGB die chip.Due to the dispersion of RGB color in the medium,the escape angle of red light is greater than that of blue and green light,and the divergence of red light is stronger than that of blue and green light after passing through the medium.The difference in the intensity attenuation of red,green and blue light causes the angular color deviation of the outgoing light.

关 键 词：Mini LED 色偏 色散 折射率 

分 类 号：TN141[电子电信—物理电子学] TN942.1