液晶与显示Issue(6)：949-959,11.DOI:10.3788/YJYXS20153006.0949
向列相液晶弹性各向异性诱导液晶盒产生漏光的研究
Study of light leakage induced by the elastic anisotropy of the nematic liquid crystal
摘要
Abstract
In the paper,we show the reasons for light leakage in the nematic liquid crystal (NLC)cells with bulk defect structure in the dark state and the influence of the anchoring conditions on it.First-ly,we give three models of NLC cells with different director distribution at the initial state.Secondly, based on the Landau-de Gennes theory,we calculate the defect dynamics of the director field and get the director distribution in the cross-section of the cells at equilibrium state.Finally,we express the director distribution in the form of light transmittance with Jones Calculus.Without applied field,the simulation results indicate that the cells with bulk defect have spontaneous twist structure under the condition of L 2/L 1 ≥ 1 (K 22/K 1 1 ≤ 2/3),which leads to light leakage of the cells.The intensity of light leakage varies with defect structures and anchoring conditions at the boundaries.Our models can explain the light leakage in the NLC cells induced by the bulk defect in the dark state,and the results show a good agreement with the phenomena found in the process of industry manufacture.关键词
体缺陷结构/漏光/Landau-de Gennes 理论/自发扭曲形变Key words
bulk defect structure/light leakage/Landau-de Gennes theory/spontaneous distortion分类
数理科学引用本文复制引用
王永超,张志东,周璇..向列相液晶弹性各向异性诱导液晶盒产生漏光的研究[J].液晶与显示,2015,(6):949-959,11.基金项目
国家自然科学基金资助项目(No.11374087 （）
No.11447179) Supported by National Natural Science Foundation of China(No.11374087 （）
No.11447179) （）
