液晶与显示2026，Vol.41Issue(8)：1102-1110,9.DOI:10.3724/CJLCD.2026-0124
用于车载显示单向防窥的WVA补偿膜TN型视角控制器的仿真研究
Simulation study of TN-type viewing angle controller with WVA compensation film for unidirectional privacy protection in automotive displays
摘要
Abstract
To address the light leakage issue at large polar angles of conventional 90°TN viewing angle controllers,this paper proposes a novel viewing angle controller(VAC)compensated with a wide-viewing angle discotic-liquid-crystal phase retardation film.The viewing angle characteristics of the proposed structure are simulated based on the TechWiz LCD software.The proposed device consists of a TN cell and two layers of WVA compensation films,enabling electrically switchable shared mode and privacy mode.At 0 V(shared mode),the structure delivers high transmittance across a wide viewing angle,satisfying the viewing requirements of both the driver and co-driver.When driven by voltages ranging from 2 V to 2.4 V(privacy mode),it achieves one-way anti-peeping performance targeted at the driver.As the applied privacy voltage varies,the anti-peeping angle and optimal viewing angle change accordingly,supporting customized demands from different automotive manufacturers.The adoption of WVA compensation films significantly reduces transmittance at large polar angles and improves privacy performance.Moreover,compared with conventional TN structures compensated by negative-C films or positive-B films,the proposed structure exhibits lower driving voltage and thinner overall thickness.It presents promising application and popularization prospects for automotive cockpit display devices(CDD)and various unidirectional anti-peeping display products.关键词
TN结构/车载显示/单侧防窥/WVA补偿膜/漏光抑制Key words
TN structure/automotive display/one-way anti-peeping/WVA compensation film/light leakage suppression分类
信息技术与安全科学引用本文复制引用
雍佳丽,李双,马红梅,孙玉宝..用于车载显示单向防窥的WVA补偿膜TN型视角控制器的仿真研究[J].液晶与显示,2026,41(8):1102-1110,9.基金项目
河北省自然科学基金(No.F202202017)Supported by National Natural Science Foundation of Hebei Province(No.F202202017) （No.F202202017）
