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    • 117. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20140218668A1
    • 2014-08-07
    • US14008660
    • 2012-03-23
    • Akira Sakai
    • Akira Sakai
    • G02F1/13363
    • G02F1/133634G02B5/3083G02B27/286G02F1/133502G02F1/13363G02F2001/133541G02F2001/133638G02F2001/133742G02F2202/36G02F2413/03G02F2413/04G02F2413/05
    • The present invention provides a liquid crystal display device which enables costs to be reduced, excels in productivity, and enables a high contrast ratio over a wide viewing angle range to be realized. The present invention is a liquid crystal display device including a first polarizer, a second-type (nx ny≧nz), a liquid crystal cell, a second λ/4 plate having an Nz coefficient different from the first λ/4, and a second polarizer in this order, wherein an in-plane slow axis of the first λ/4 plate forms generally 45 degrees as to an absorption axis of the first polarizer, an in-plane slow axis of the second λ/4 plate is generally orthogonal to the in-plane slow axis of the first λ/4 plate, an absorption axis of the second polarizer is orthogonal to the absorption axis of the first polarizer, an in-plane fast axis of the second-type birefringent layer is generally orthogonal to the absorption axis of the first polarizer, and black display is performed by aligning liquid crystal molecules within a liquid crystal layer in a manner generally perpendicular to substrate faces.
    • 本发明提供一种液晶显示装置,其能够降低成本,优异的生产率,并且能够实现在宽视角范围内的高对比度。 本发明是一种液晶显示装置,包括第一偏振器,第二类型(nx ny≥nz),液晶单元,第二λ / 4板,其具有与第一λ/ 4不同的Nz系数和第二偏振器,其中第一λ/ 4板的面内慢轴相对于第一偏振片的吸收轴形成大致45度 第二λ/ 4板的面内慢轴大体上与第一λ/ 4板的面内慢轴正交,第二偏振片的吸收轴与第一偏振片的吸收轴正交, 第二型双折射层的面内快轴通常与第一偏振片的吸收轴正交,黑色显示是通过以大致垂直于基板面的方式在液晶层内取向液晶分子来进行的。
    • 119. 发明申请
    • LIQUID CRYSTAL DISPLAY PANEL
    • 液晶显示面板
    • US20130148053A1
    • 2013-06-13
    • US13817942
    • 2011-08-11
    • Kiyoshi MinouraAkira SakaiTokio Taguchi
    • Kiyoshi MinouraAkira SakaiTokio Taguchi
    • G02F1/1335
    • G02F1/1335G02B1/118G02B5/30G02F1/133502G02F2001/133531G02F2203/64
    • A liquid crystal display panel is capable of displaying in a normally black mode. The liquid crystal display panel includes: a liquid crystal cell which includes a liquid crystal layer and a pair of substrates; a first polarizing plate provided on a rear surface side of the liquid crystal cell; a second polarizing plate provided on a viewer side of the liquid crystal cell; and an antireflection layer provided on a viewer side of the second polarizing plate, the antireflection layer having a moth-eye structure, wherein a transmission axis of the first polarizing plate is parallel to a vertical direction in a display plane, and a transmission axis of the second polarizing plate is parallel to a horizontal direction in the display plane. According to an embodiment of the present invention, a pale black state in oblique viewing angles is prevented.
    • 液晶显示面板能够以常黑模式显示。 液晶显示面板包括:液晶单元,包括液晶层和一对基板; 设置在液晶单元的后表面侧的第一偏振板; 设置在液晶单元的观察者侧的第二偏振片; 以及防反射层,设置在第二偏振片的观察者侧,防反射层具有蛾眼结构,其中第一偏振片的透射轴在显示面中平行于垂直方向,透射轴为 第二偏振板在显示平面中平行于水平方向。 根据本发明的一个实施例,可以防止斜视角中的浅黑色状态。
    • 120. 发明授权
    • Liquid crystal display device having first and second birefringent layers and first and second quarter-wave plates
    • 具有第一和第二双折射层和第一和第二四分之一波片的液晶显示装置
    • US08174650B2
    • 2012-05-08
    • US12863854
    • 2008-11-28
    • Akira SakaiKazuyoshi Sakuragi
    • Akira SakaiKazuyoshi Sakuragi
    • G02F1/1335
    • G02F1/13363G02B5/3083G02B27/28G02F1/133528G02F2001/133638G02F2413/04G02F2413/06G02F2413/08
    • The present invention provides an LCD device that has a higher contrast ratio in a wide viewing angle and that can be easily produced at low cost. The present invention is a liquid crystal display device, including in the following order: a first polarizer; a first birefringent layer; a first quarter-wave plate; a liquid crystal cell; a second quarter-wave plate; a second birefringent layer; and a second polarizer having an absorption axis orthogonal to an absorption axis of the first polarizer, wherein the first birefringent layer satisfies Nz>0.9 and has an in-plane slow axis orthogonal to the absorption axis of the first polarizer; the first quarter-wave plate has an in-plane slow axis forming an angle of about 45° with the absorption axis of the first polarizer; the liquid crystal cell displays a black screen by aligning liquid crystal molecules in the liquid crystal cell vertically to a substrate surface; the second quarter-wave plate has an in-plane slow axis orthogonal to the in-plane slow axis of the first quarter-wave plate; and the second birefringent layer satisfies Nz
    • 本发明提供了一种在宽视角下具有较高对比度并且可以容易地以低成本生产的LCD装置。 本发明是一种液晶显示装置,包括以下顺序:第一偏振片; 第一双折射层; 第一个四分之一波片; 液晶单元; 第二个四分之一波片; 第二双折射层; 以及具有与所述第一偏振片的吸收轴正交的吸收轴的第二偏振片,其中,所述第一双折射层满足Nz> 0.9,并且具有与所述第一偏振片的吸收轴正交的面内慢轴; 第一四分之一波片具有与第一偏振器的吸收轴成45°角的平面内慢轴; 液晶单元通过将液晶单元中的液晶分子垂直于衬底表面来显示黑色屏幕; 第二四分之一波片具有与第一四分之一波片的平面内慢轴正交的平面内慢轴; 并且第二双折射层满足Nz <0.1并且具有平行于第二偏振器的吸收轴的平面内的慢轴。