斜入射下1/4波片补偿能力的优化  

Optimization on compensation ability for quarter wave plate under oblique incidence

作　　者：陈思博 周璇[3] 黄盆盛 陈方中 朱吉亮[3] 阮志毅 霍丙忠 CHEN Si-bo;ZHOU Xuan;HUANG Pen-sheng;CHEN Fang-zhong;ZHU Ji-liang;RUAN Zhi-yi;HUO Bing-zhong(Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518000,China;R&D Center,Shenzhen Sunnypol Optoelectronics Co.,Ltd.,Shenzhen 518107,China;School of Sciences,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]中国科学院深圳先进技术研究院,广东深圳518000 [2]深圳市三利谱光电科技股份有限公司研发中心,广东深圳518107 [3]河北工业大学理学院,天津300401

出　　处：《液晶与显示》2023年第10期1338-1346,共9页Chinese Journal of Liquid Crystals and Displays

基　　金：河北省自然科学基金(No.F2020202015)。

摘　　要：本文使用理论与实验相结合的方法研究了斜入射下液晶涂布型C-plate(Liquid crystal coated C-plate,LCC)对逆分散1/4波片(Reverse wavelength dispersion quarter wave plate,RQWP)补偿能力的优化特性。使用扩展琼斯矩阵比较了偏振光以任意角度通过RQWP、RQWP+LCC两种架构后出射光的椭圆率,探究了不同相位延迟RTH的LCC对出射光椭圆率的影响;测试了上述两种架构的圆偏光片在OLED(Organic light emitting-diode display)上的环境光反射率以及反射颜色色坐标。结果表明,LCC能够使45°斜入射时出射光的椭圆率提升10%以上,且在红、绿、蓝三色光条件下,调整LCC的RTH可使膜材架构的总折射率系数NZ趋近于0.5,获得最佳效果。使用RQWP+LCC架构的圆偏光片可使45°极角下OLED的环境光反射率降低3%。在工业生产中直接生产NZ=0.5的膜材拥有较高的技术难度,本文结论对开发NZ=0.5的膜材提供了新的可行方案。The optimization ability of LCC(Liquid crystal coated C-plate,LCC)to the RQWP(Reverse wavelength dispersion quarter wave plate,RQWP)compensation characteristics under the oblique incidence is investigated based on the combination of theoretical research and experimental research.The ellipticity of the outgoing light passing through RQWP and RQWP+LCC at any angle and the influence of LCC with different RTH on the ellipticity of the outgoing light are calculated based on extended Jones matrix method.The reflectance of ambient light and color deviation at large viewing-angle of the circular polarizer made by above structures are tested respectively under the case of OLED(Organic light emitting-diode display).It is shown that the LCC can make an increase of more than 10%for the ellipticity at 45°incidence.According to the numerical simulation with different NZ value of RQWP+LCC,NZ=0.5 is proved to be the best ellipticity configuration at any incident angle under R(red light),G(green light)and B(blue light)wavelengths.The structure with RQWP+LCC could reduce the ambient light reflectance by 3%under the oblique incidence at 45°polar angle on OLED.It is difficult to produce the compensation film with NZ=0.5 directly in industrial production,while relevant conclusions in this manuscript have potential to guide similar applications.

关 键 词：斜入射 扩展琼斯矩阵 椭圆率 1/4波片 

分 类 号：O436.3[机械工程—光学工程] O59[理学—光学] TN141[理学—物理]