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1. 发明授权

US07403248B2 Liquid crystal display device 有权
标题翻译：液晶显示装置
公开(公告)号：US07403248B2
公开(公告)日：2008-07-22
申请号：US10376454
申请日：2003-03-03
申请人： Toshihisa Uchida , Koichi Miyachi , Masumi Kubo , Nobuhiko Nakai , Hidehiko Ohkura
发明人： Toshihisa Uchida , Koichi Miyachi , Masumi Kubo , Nobuhiko Nakai , Hidehiko Ohkura
IPC分类号： G02F1/13363
CPC分类号： G02F1/133634 , G02F1/1393
摘要： The liquid crystal display device of the invention includes: a liquid crystal layer taking on a roughly vertically aligned state in the black display state: first and second polarizing plates placed to face each other so that the transmission axes are orthogonal to each other; at least one first phase plate placed between the liquid crystal layer and the first polarizing plate and/or the second polarizing plate; at least one second phase plate placed between the first phase plate and the first or second polarizing plate whichever is farther from the first phase plate; and an illuminator for illuminating the liquid crystal layer with light via the first or second polarizing plate. The first phase plate has biaxial optical anisotropy and has functions of compensating part of thickness-direction retardation of the liquid crystal layer in the black display state and suppressing light leakage caused by deviation of the transmission axes of the first and second polarizing plates from the mutual orthogonal relationship in a tilted viewing angle direction. The second phase plate has negative uniaxial optical anisotropy and has a function of compensating the thickness-direction retardation of the liquid crystal layer in the black display state in cooperation with the first phase plate.
摘要翻译：本发明的液晶显示装置包括：在黑色显示状态下呈现大致垂直排列状态的液晶层：第一和第二偏光板彼此相对放置，使得透射轴彼此正交; 放置在液晶层和第一偏振板和/或第二偏振片之间的至少一个第一相位板; 至少一个第二相位板，放置在第一相位板和第一或第二偏振片之间，取较远离第一相位板; 以及用于经由第一或第二偏振片用光照射液晶层的照明器。第一相位板具有双轴光学各向异性，并且具有在黑色显示状态下补偿液晶层的厚度方向延迟部分的功能，并且抑制由第一和第二偏振片的透射轴的偏离与相互在倾斜视角方向上的正交关系。第二相位板具有负的单轴光学各向异性，并且具有与第一相位板协作来补偿黑色显示状态下的液晶层的厚度方向延迟的功能。

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