Viewing angle characteristics of a nematic liquid crystal cell with two crossed-grating surface substrates  

作　　者：叶文江 邢红玉 任芝 张志东 孙玉宝 陈国鹰 

机构地区：[1]School of Sciences,Hebei University of Technology [2]School of Information Engineering,Hebei University of Technology [3]Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences [4]Graduate University of Chinese Academy of Sciences [5]Department of Mathematics and Physics,North China Electric Power University

出　　处：《Chinese Optics Letters》2010年第12期1171-1174,共4页中国光学快报（英文版）

基　　金：supported by the Natural Science Foundation of Hebei Province (No. A2010000004);the National Natural Science Foundation of China (Nos.10704022 and 60736042);the Key Subject Construction Project of Hebei Province University

摘　　要：Liquid crystal in a nematic liquid crystal cell surface with two crossed-grating surface substrates can be oriented along the normal grating direction with given geometric parameters of groove and anchoring strength. This display is equivalent to multi-domain vertical-alignment mode. It has a relatively wide viewing angle. In this letter, we investigate the viewing angle characteristics of this kind of cell. The viewing angle dependence of contrast ratio is obtained using the extended Jones matrix method, which also considers the flexoelectric effect. The viewing angle is dependent on the geometric parameter of grating surface, the flexoelectric coefficients, and the anchoring strength. Therefore, appropriate value for each factor needs to be selected to obtain a better viewing angle of this cell.Liquid crystal in a nematic liquid crystal cell surface with two crossed-grating surface substrates can be oriented along the normal grating direction with given geometric parameters of groove and anchoring strength. This display is equivalent to multi-domain vertical-alignment mode. It has a relatively wide viewing angle. In this letter, we investigate the viewing angle characteristics of this kind of cell. The viewing angle dependence of contrast ratio is obtained using the extended Jones matrix method, which also considers the flexoelectric effect. The viewing angle is dependent on the geometric parameter of grating surface, the flexoelectric coefficients, and the anchoring strength. Therefore, appropriate value for each factor needs to be selected to obtain a better viewing angle of this cell.

关 键 词：Cell membranes Liquid crystals Liquids 

分 类 号：O753.2[理学—晶体学] Q26[生物学—细胞生物学]