Novel cell parameter determination of a twisted-nematic liquid crystal display  

作　　者：黄霞 荆海 付国柱 

机构地区：[1]Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences [2]North Liquid Crystal Engineering Research and Development Center [3]Graduate School of the Chinese Academy of Sciences

出　　处：《Chinese Physics B》2008年第3期950-953,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No60576056)

摘　　要：In this paper a novel method is proposed to determine the cell parameters including the twist angle, optic retardation and rubbing direction of twisted-nematic liquid crystal displays （TNLCD） by rotating the TNLCD. It is a single-wavelength method. Because using subtraction equation of transmittance as curve fitting equation, the influence of the light from environment and the absorption by polarizer, the sample of TNLCD and analyser on the transmittance is eliminated. Accurate results can also be obtained in imperfect darkness. By large numbers of experiments, we found that not only the experimental setup is quite simple and can be easily adopted to be carried out, but also the results are accurate.In this paper a novel method is proposed to determine the cell parameters including the twist angle, optic retardation and rubbing direction of twisted-nematic liquid crystal displays （TNLCD） by rotating the TNLCD. It is a single-wavelength method. Because using subtraction equation of transmittance as curve fitting equation, the influence of the light from environment and the absorption by polarizer, the sample of TNLCD and analyser on the transmittance is eliminated. Accurate results can also be obtained in imperfect darkness. By large numbers of experiments, we found that not only the experimental setup is quite simple and can be easily adopted to be carried out, but also the results are accurate.

关 键 词：liquid crystal display twist angle optical retardation rubbing direction 

分 类 号：TN873.93[电子电信—信息与通信工程]