Viewing angle characteristics of a nematic liquid crystal cell with two crossed-grating surface substrates |
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| Authors: | Wenjiang Ye Hongyu Xing Zhi Ren Zhidong Zhang Yubao Sun Guoying Chen |
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| Institution: | [1]School of Sciences, Hebei University of Technology, Tianjin 300401, China [2]School of Information Engineering, Hebei University of Technology, Tianjin 300401, China [3]Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China [4]Graduate University of Chinese Academy of Sciences, Beijing 100049, China [5]Department of Mathematics and Physics, North China Electric Power University, Baoding 071000, China |
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| Abstract: | 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. |
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