液晶与显示2025，Vol.40Issue(11)：1597-1605,9.DOI:10.37188/CJLCD.2025-0168
高频脉冲驱动下液晶盒的开关动力学机理
Switching dynamics mechanism of liquid crystal cell driven by high-frequency pulses
摘要
Abstract
High-resolution liquid crystal spatial light modulators driven by high-frequency pulses are widely used in holographic imaging,near-eye AR/VR,optical communication and other fields,but the lack of fast response performance and output jitter of the liquid crystal cell are still technical problems that need to be solved urgently.Existing studies are mostly limited to static or low-frequency slow electric fields,and the complex relationship between high-frequency pulse driving and switching dynamics is not clear.Based on the Ericksen-Leslie dynamics theory of nematic liquid crystals,the characteristic curves of equations under inertia or viscosity dominated has been discussed and simulated in this paper.As mentioned previously,a parallel-aligned liquid crystal cell with a cell thickness of approximately 1 μm was used,driven by rectangular pulses from 1 kHz to 10 kHz,and the relaxation process of the liquid crystal was observed by the light intensity method.The results show that after the driving field is turned off,the relaxation process of the nematic liquid crystal deformation is jointly dominated by inertial and viscous properties.Based on this finding,we conclude that the proposed model provides a more precise interpretation of the switching dynamics of liquid crystal cells,which will facilitate the optimization of liquid crystal spatial light modulators.Meanwhile,this work is expected to promote a more in-depth investigation into the switching dynamics mechanism of liquid crystal cells under high-frequency pulse driving.关键词
液晶空间光调制器/高频脉冲驱动/Ericksen-Leslie动力学理论/指向矢开关动力学/惯性与黏性效应Key words
liquid crystal spatial light modulator/high-frequency pulse drive/Ericksen-Leslie kinetic theory/director switching dynamics/inertia and viscosity effects分类
信息技术与安全科学引用本文复制引用
葛博群,胡永兵,韦穗,沈川,郝学锋,仲昭涵..高频脉冲驱动下液晶盒的开关动力学机理[J].液晶与显示,2025,40(11):1597-1605,9.基金项目
国家自然科学基金(No.62271005) （No.62271005）
安徽省高校自然科学基金(No.2022AH050089,No.KJ2020ZD02) Supported by National Natural Science Foundation of China(No.62271005) （No.2022AH050089,No.KJ2020ZD02）
Natural Science Foundation of Higher Education Institutions of Anhui Province(No.2022AH050089,No.KJ2020ZD02) （No.2022AH050089,No.KJ2020ZD02）
