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    Liquid crystal display device having wide viewing angle and improved contrast ratio
    12.
    发明授权
    Liquid crystal display device having wide viewing angle and improved contrast ratio 有权
    液晶显示装置具有宽视角和改善的对比度

    公开(公告)号：US06646701B2

    公开(公告)日：2003-11-11

    申请号：US10114718

    申请日：2002-04-01

    Applicant: Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    Inventor： Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    IPC: G02F11335

    CPC classification number: G02F1/13363 ,  G02F1/133634 ,  G02F1/1337 ,  G02F1/1393 ,  G02F1/1396 ,  G02F2001/133742 ,  G02F2001/13712

    Abstract: Liquid crystal display devices include a vertically aligned liquid crystal cell having first and second surfaces that extend opposite each other and contain a liquid crystal material therein having negative dielectric anisotropy. First and second polarizers are attached to the first and second surfaces of the liquid crystal cell, respectively. A first a-plate compensation film and a first c-plate compensation film are provided. These films are disposed between the first surface of the liquid crystal cell and the first polarizer. The direction having a largest refractive index in the first a-plate compensation film is parallel to or perpendicular to a polarizing direction of the first polarizer. Moreover, a difference between a summation of a retardation (nxa1−nza1)×da1 of the first a-plate compensation film, a retardation (nxc1−nzc1)×dc1 of the first c-plate compensation film and a retardation of the first and the second polarizers and a retardation due to birefringence of the liquid crystal cell is equal to or less than 15% of the retardation value due to birefringence of the liquid crystal cell.

    Abstract translation: 液晶显示装置包括具有第一和第二表面的垂直取向的液晶单元，第一和第二表面彼此相对延伸并且包含其中具有负介电各向异性的液晶材料。 第一和第二偏振器分别附着到液晶单元的第一和第二表面。 提供了第一平板补偿膜和第一c板补偿膜。 这些膜设置在液晶单元的第一表面和第一偏振器之间。 在第一平板补偿膜中具有最大折射率的方向平行于或垂直于第一偏振器的偏振方向。 此外，第一平板补偿膜的延迟（nxa1-nza1）xda1的和，第一c板补偿膜的延迟（nxc1-nzc1）xdc1与第一和第二平板补偿膜的相位差 由于液晶单元的双折射引起的偏振器和由于双折射引起的延迟等于或小于由于液晶单元的双折射引起的延迟值的15％。

    LIQUID CRYSTAL DISPLAY HAVING WIDE VIEWING ANGLE
    15.
    发明申请
    LIQUID CRYSTAL DISPLAY HAVING WIDE VIEWING ANGLE 有权
    具有宽视角的液晶显示

    公开(公告)号：US20120013829A1

    公开(公告)日：2012-01-19

    申请号：US13241327

    申请日：2011-09-23

    Applicant: Jang-Kun SONG ,  Kyeong-Hyeon KIM ,  Kye-Hun LEE ,  Hea-Ri LEE

    Inventor： Jang-Kun SONG ,  Kyeong-Hyeon KIM ,  Kye-Hun LEE ,  Hea-Ri LEE

    IPC: G02F1/1335 ,  G02F1/1343

    CPC classification number: G02F1/133753 ,  G02F1/133528 ,  G02F1/133634 ,  G02F1/133707 ,  G02F1/1343 ,  G02F1/134309 ,  G02F1/134336 ,  G02F1/13439 ,  G02F1/1393 ,  G02F1/1396 ,  G02F2001/133742 ,  G02F2001/133757 ,  G02F2001/13712 ,  G02F2201/121

    Abstract: A tetragonal ring shape aperture is formed in the common electrode on one substrate and a cross shape aperture is formed at the position corresponding to the center of the tetragonal ring shape aperture in the pixel electrode on the other substrate. A liquid crystal layer between two electrodes are divided to four domains where the directors of the liquid crystal layer have different angles when a voltage is applied to the electrodes. The directors in adjacent domains make a right angle. The tetragonal ring shape aperture is broken at midpoint of each side of the tetragon, and the width of the aperture decreases as goes from the bent point to the edge. Wide viewing angle is obtained by four domains where the directors of the liquid crystal layer indicate different directions, disclination is removed and luminance increases.

    Abstract translation: 在一个基板上的公共电极上形成四角环形孔，并且在与另一个基板上的像素电极中的四边形环形孔的中心对应的位置处形成十字形孔。 两个电极之间的液晶层被分成四个畴，其中当向电极施加电压时，液晶层的导向器具有不同的角度。 相邻领域的董事是直角的。 四边形环形孔在四边形的每一侧的中点断开，并且孔的宽度从弯曲点向边缘减小。 通过四个畴获得宽视角，其中液晶层的指向物指示不同的方向，旋错和亮度增加。

    LIQUID CRYSTAL DISPLAYS
    16.
    发明申请
    LIQUID CRYSTAL DISPLAYS 有权
    液晶显示

    公开(公告)号：US20100296043A1

    公开(公告)日：2010-11-25

    申请号：US12765605

    申请日：2010-04-22

    Applicant: Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    Inventor： Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    IPC: G02F1/1333

    CPC classification number: G02F1/13363 ,  G02F1/133634 ,  G02F1/1337 ,  G02F1/1393 ,  G02F1/1396 ,  G02F2001/133742 ,  G02F2001/13712

    Abstract: A liquid crystal display comprises two parallel spaced substrates and a liquid crystal layer with negative dielectric anisotropy interposed between the substrates. The ratio d/p, the cell gap d between the substrates to the pitch p of the liquid crystal layer, is equal to or less than 0.3, and the retardation value Δn*d may be in the range of 0.25-0.4. In absence of electric field, the liquid crystal molecules are arranged vertically to the substrates, and when the sufficient electric field is applied, the liquid crystal molecules are parallel to the substrates and twisted by 90° from one substrate to the other.

    Abstract translation: 液晶显示器包括两个平行间隔的衬底和介于各衬底之间的具有负介电各向异性的液晶层。 基板与液晶层的间距p之间的比d / p，单元间隙d等于或小于0.3，延迟值＆lt; Dgr; n * d可以在0.25-0.4的范围内。 在不存在电场的情况下，液晶分子与基板垂直配置，当施加足够的电场时，液晶分子平行于基板并从一个基板扭转90°。

    Liquid crystal display devices having wide viewing angle and improved contrast ratio
    18.
    发明授权
    Liquid crystal display devices having wide viewing angle and improved contrast ratio 有权
    液晶显示装置具有宽视角和改善的对比度

    公开(公告)号：US06943858B2

    公开(公告)日：2005-09-13

    申请号：US10655516

    申请日：2003-09-04

    Applicant: Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    Inventor： Jae-Jin Lyu ,  Hea-Ri Lee ,  Kyeong-Hyeon Kim ,  Jian-Min Chen

    IPC: G02F1/13 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139 ,  C09K19/02 ,  G02F1/1337

    CPC classification number: G02F1/13363 ,  G02F1/133634 ,  G02F1/1337 ,  G02F1/1393 ,  G02F1/1396 ,  G02F2001/133742 ,  G02F2001/13712

    Abstract: Liquid crystal display devices include a vertically aligned liquid crystal cell having first and second surfaces that extend opposite each other and contain a liquid crystal material therein having negative dielectric anisotropy. First and second polarizers are attached to the first and second surfaces of the liquid crystal cell, respectively. A first a-plate compensation film and a first c-plate compensation film are provided. These films are disposed between the first surface of the liquid crystal cell and the first polarizer. The direction having a largest refractive index in the first a-plate compensation film is parallel to or perpendicular to a polarizing direction of the first polarizer. Moreover, a difference between a summation of a retardation (nx21−nza1)×da1 of the first a-plate compensation film, a retardation (nxc1−nzc1)×dc1 of the first c-plate compensation film and a retardation of the first and the second polarizers and a retardation due to birefringence of the liquid crystal cell is equal to or less than 15% of the retardation value due to birefringence of the liquid crystal cell.

    Abstract translation: 液晶显示装置包括具有第一和第二表面的垂直取向的液晶单元，第一和第二表面彼此相对延伸并且包含其中具有负介电各向异性的液晶材料。 第一和第二偏振器分别附着到液晶单元的第一和第二表面。 提供了第一平板补偿膜和第一c板补偿膜。 这些膜设置在液晶单元的第一表面和第一偏振器之间。 在第一平板补偿膜中具有最大折射率的方向平行于或垂直于第一偏振器的偏振方向。 此外，第一平板补偿膜的延迟（n×x2 -n×za1×）×d1a1 / s2的和的和 第一c板补偿膜的延迟（n×x1 -n×z1×1）×d×c1 和第一和第二偏振器的延迟和 由于液晶单元的双折射引起的延迟等于或小于由于液晶单元的双折射引起的延迟值的15％。

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