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    LCD including light divergent element at front of display panel
    1.
    发明授权
    LCD including light divergent element at front of display panel 有权
    LCD在显示面板前方包括光发散元件

    公开(公告)号：US06678019B2

    公开(公告)日：2004-01-13

    申请号：US09956941

    申请日：2001-09-21

    申请人： Takashi Sato ,  Noriko Watanabe ,  Shigeaki Mizushima

    发明人： Takashi Sato ,  Noriko Watanabe ,  Shigeaki Mizushima

    IPC分类号： G02F11335

    CPC分类号： G02B6/0046 ,  G02B6/005 ,  G02B6/0051 ,  G02F1/133504 ,  G02F1/133526

    摘要： A transmission type liquid crystal display device includes: a liquid crystal display element including a pair of transparent insulating substrates placed to face each other with a gap therebetween, transparent electrodes being formed on inner surfaces of the substrates, and a liquid crystal material injected in the gap; a light source placed on a back side of the liquid crystal display element; and a light diverging element placed on a front side of the liquid crystal display element, wherein the liquid crystal display device satisfies an expression 0.5 ≦ ∫ - 90 ⁢ ° 90 ⁢ ° ⁢ B ⁢   ⁢ L ⁡ ( θ ) × L ⁢   ⁢ C ⁡ ( θ ) × Dif ⁡ ( 10 ⁢ ° , θ ) ⁢ ⅆ θ ∫ - 90 ⁢ ° 90 ⁢ ° ⁢ B ⁢   ⁢ L ⁡ ( θ ) × L ⁢   ⁢ C ⁡ ( θ ) × Dif ⁡ ( 0 ⁢ ° , θ ) ⁢ ⅆ θ where BL(&thgr;) is a light emitting angle &thgr;—luminance characteristic of the light source, LC(&thgr;) is an incident angle &thgr; to the liquid crystal display element—transmittance characteristic of the liquid crystal display element in a bright state, and Dif(a, &thgr;) is an incident angle &thgr; to the light diverging element—transmittance characteristic of the light diverging element at a light receiving angle a.

    摘要翻译： 透射型液晶显示装置包括：液晶显示元件，包括一对透明绝缘基板，彼此间隔开间隔开，透明电极形成在基板的内表面上，并且液晶材料注入到 间隙; 放置在液晶显示元件背面的光源; 以及放置在液晶显示元件的前侧的发光元件，其中液晶显示装置满足其中BL（θ）是光源的发光角度θ亮度特性的表达式，LC（θ）是 入射角θ与液晶显示元件的亮度状态下的液晶显示元件的透射率特性相对应，Dif（a，θ）是与发光元件的光发散元件透射特性的入射角θ 光接收角度a。

    Liquid crystal display
    6.
    发明授权
    Liquid crystal display 失效
    液晶显示器

    公开(公告)号：US5844649A

    公开(公告)日：1998-12-01

    申请号：US827662

    申请日：1997-04-10

    申请人： Motohiro Yamahara ,  Mitsuaki Hirata ,  Shigeaki Mizushima ,  Noriko Watanabe

    发明人： Motohiro Yamahara ,  Mitsuaki Hirata ,  Shigeaki Mizushima ,  Noriko Watanabe

    IPC分类号： G02B5/30 ,  G02F1/13 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/1343

    CPC分类号： G02F1/133753 ,  G02F1/133632 ,  G02F2001/133761

    摘要： A liquid crystal display has a liquid crystal layer that is sandwiched between a pair of electrode substrates in a manner so as to contact alignment films, and also has a liquid crystal display element having optical phase-difference plates placed on both sides thereof. The liquid crystal layer is divided into a first division-section and a second division-section that have different sizes and that are oriented by the alignment films in respectively different directions. Further, with respect to the first division-section that has the larger size, an optical phase difference plate is placed so that the index ellipsoid, which identifies the refractive-index anisotropy of the optical phase-difference plate, has an inclined direction to the optical phase-difference plate that is opposite to the pretilt direction of liquid crystal molecules located in the vicinity of the alignment films. Thus, since biased optical characteristics are properly compensated, viewing-angle characteristics in the case of inclined viewing angles can be improved. Consequently, it becomes possible to eliminate the occurrences of a gradation-inverting phenomenon in the up and down directions as well as right and left directions and a coloring phenomenon in the up and down direction, and consequently to improve contrast while eliminating display unevenness.

    摘要翻译： 液晶显示器具有以与接触取向膜接触的方式夹在一对电极基板之间的液晶层，并且还具有设置在其两侧的光学相位差板的液晶显示元件。 液晶层被分成具有不同尺寸并且分别取向于取向膜的不同方向的第一分割部分和第二分割部分。 此外，对于具有较大尺寸的第一分割部分，放置光学相位差板，使得识别光学相位差板的折射率各向异性的折射率椭圆体具有相对于 光学相位差板与位于配向膜附近的液晶分子的预倾斜方向相反。 因此，由于偏置的光学特性被适当地补偿，所以可以提高在倾斜视角的情况下的视角特性。 因此，可以消除在上下方向以及左右方向上的灰度反转现象和上下方向的着色现象​​的发生，从而在消除显示不均匀性的同时提高对比度。