Optical properties of chiral polymer stability VA liquid crystal

DING Wen-quan; WANG Li-na; YANG Ya-fei; WANG Pan-pan; ZHOU Zhen-ting; LI Rong-rong

doi:10.37188/CJLCD.2023-0306

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Optical properties of chiral polymer stability VA liquid crystal

Material Physics | 更新时间：2024-07-28

- Optical properties of chiral polymer stability VA liquid crystal
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 12, Pages: 1645-1652(2023)
- 作者机构：
  
  江苏和成显示科技有限公司，江苏南京 210014
- 作者简介：
- 基金信息：
- DOI：10.37188/CJLCD.2023-0306
  CLC： O753⁺.2
- Received：22 September 2023，
  
  Revised：13 October 2023，
  
  Published：05 December 2023
- 稿件说明：
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DING Wen-quan, WANG Li-na, YANG Ya-fei, et al. Optical properties of chiral polymer stability VA liquid crystal[J]. Chinese journal of liquid crystals and displays, 2023, 38(12): 1645-1652.
DOI：

DING Wen-quan, WANG Li-na, YANG Ya-fei, et al. Optical properties of chiral polymer stability VA liquid crystal[J]. Chinese journal of liquid crystals and displays, 2023, 38(12): 1645-1652. DOI： 10.37188/CJLCD.2023-0306.

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。

Abstract

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.

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references

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