手性掺杂聚合物稳定VA液晶的光学性能  

Optical properties of chiral polymer stability VA liquid crystal

作　　者：丁文全 王力娜 杨亚非 王盼盼 周振婷 李荣荣 DING Wen-quan;WANG Li-na;YANG Ya-fei;WANG Pan-pan;ZHOU Zhen-ting;LI Rong-rong(Jiangsu Hecheng Display Technology Co.,Ltd.,Nanjing 210014,China)

机构地区：[1]江苏和成显示科技有限公司,江苏南京210014

出　　处：《液晶与显示》2023年第12期1645-1652,共8页Chinese Journal of Liquid Crystals and Displays

摘　　要：聚合物稳定VA(PSVA)液晶显示模式具有优异的光电性能。为进一步提升PSVA显示模式的透过率,在液晶中加入手性剂,形成手性掺杂聚合物稳定VA(C-PSVA)液晶显示模式。本文对C-PSVA显示模式的最优参数及实际显示效果进行研究。首先,建立模型对C-PSVA显示模式的光电特性及液晶分布进行模拟,分析了手性剂的加入对液晶排列产生的影响,对C-PSVA的显示原理进行分析。其次,研究了C-PSVA显示模式的延迟量、偏光片角度、手性剂比例对透过率提升的影响。最后,按照模拟结果配制液晶,制作C-PSVA样品,进行实际效果验证。结果表明,C-PSVA显示模拟的透过率较PSVA显示模式有明显提升,C-PSVA显示模式最佳延迟量约为460 nm,最优手性剂含量对应螺距值为4倍的盒厚。实测结果显示,与PSVA显示模式相比,C-PSVA显示模式透过率约有13%的提升。Polymer stability vertical alignment(PSVA)liquid crystal display mode has excellent electric-optic characteristics.In order to improve the transmittance of PSVA display mode,chiral polymer stability vertical alignment(C-PSVA)display mode was established by adding chiral monomer into liquid crystal.In this paper,the optimal parameters of C-PSVA display mode and its actual display effect were studied.Firstly,models were established to simulate the electric-optic characteristics and liquid crystal molecule alignment of C-PSVA display.The effect of chiral monomer on orientation of liquid crystal and the working principle of C-PSVA display mode were analyzed.Then,the effects of retardation,polarizer angle and chiral monomer ratio on the transmittance of C-PSVA display were studied.Finally,C-PSVA display samples were made according to the simulation results,and the actual effects were compared with PSVA display samples.The results show that the transmittance of C-PSVA display is obviously higher than that of PSVA display mode.The optimal retardation of C-PSVA display mode is about 460 nm,and the optimum pitch value is 4 times cell gap.The practical application results demonstrate that the transmittance of C-PSVA display mode is increased by 13%compared with PSVA display mode.

关 键 词：聚合物稳定 手性剂 透过率 最佳延迟量 

分 类 号：O753.2[理学—晶体学]