液晶与显示2025，Vol.40Issue(9)：1251-1257,7.DOI:10.37188/CJLCD.2025-0117
单向遮光的聚合物稳定扭曲向列相液晶器件
Polymer-stabilized twisted nematic liquid crystal devices with unidirectional light-blocking
摘要
Abstract
To effectively prevent light emission in a certain direction from affecting viewers,such as the reflections produced by automotive display screens on the front windshield,this paper proposes a polymer-stabilized liquid crystal device that prevents light emission in a specific direction.This unidirectional light-blocking liquid crystal device is based on a twisted nematic(TN)structure.By applying an electric field,the liquid crystal director's profile in the liquid crystal layer is appropriately controlled.In this state,ultraviolet light is used to cure the polymer monomers dispersed in the liquid crystal,forming a stable polymer network that fixes the orientation of the liquid crystal molecules.When the electric field is removed and the polarizer is adhered to,a unidirectional light-blocking effect is achieved,fulfilling the desired requirement.Experimental results show that the proposed unidirectional light-blocking device can prevent light from passing through at specific angles,with a maximum transmittance of 89%at the normal viewing angle.The double-layer structure significantly reduces light leakage at large angles while maintaining a maximum transmittance of 70%at the normal viewing angle,providing a better unidirectional light-blocking effect.This work demonstrates that polymer-stabilized twisted nematic liquid crystal devices can offer unidirectional light-blocking characteristics while maintaining high transmittance in the forward direction,making them highly suitable for special applications in personal electronic products,vehicle displays,and safety information terminals,thus possessing significant practical value.关键词
液晶聚合物/单方向遮光/TN结构/车载显示器Key words
polymer stabilized liquid crystal/unidirectional light-blocking/TN structure/vehicle display分类
数理科学引用本文复制引用
闫云飞,林若龙,周子涵,马红梅,孙玉宝..单向遮光的聚合物稳定扭曲向列相液晶器件[J].液晶与显示,2025,40(9):1251-1257,7.基金项目
河北省自然科学基金(No.F2022202017) Supported by Natural Science Foundation of Hebei Province(No.F2022202017) （No.F2022202017）
