公开(公告)号：US5249071A

公开(公告)日：1993-09-28

申请号：US795324

申请日：1991-11-20

申请人： Toshiyuki Yoshimizu ,  Hiroshi Ohnishi ,  Yumi Yoshimura ,  Keiko Kishimoto

发明人： Toshiyuki Yoshimizu ,  Hiroshi Ohnishi ,  Yumi Yoshimura ,  Keiko Kishimoto

IPC分类号： G02F1/1335 ,  G02B5/30 ,  G02F1/13363 ,  G02F1/139

CPC分类号： G02F1/133634 ,  G02F1/1397 ,  G02F2413/13 ,  G02F2413/14

摘要： In a supertwist type liquid crystal display, a pair of upper and lower polarizers and polymer films are disposed in such an arrangement that the upper polarizer, first uniaxial oriented polymer film, second uniaxial oriented polymer film, supertwist type liquid crystal cell, third uniaxial oriented polymer film, first biaxial oriented polymer film and the lower polarizer are sequentially piled on in this order, and each of said first, second and third uniaxial oriented polymer films has a positive optical anisotropy and said first biaxial oriented polymer film has a negative optical anisotropy.

公开(公告)号：US5400158A

公开(公告)日：1995-03-21

申请号：US97263

申请日：1993-07-23

申请人： Hiroshi Ohnishi ,  Keiko Kishimoto

发明人： Hiroshi Ohnishi ,  Keiko Kishimoto

IPC分类号： G02F1/13363 ,  G02F1/139 ,  G02F1/1335 ,  G02F1/133

CPC分类号： G02F1/133636 ,  G02F1/1397

摘要： A liquid crystal display is disclosed. The liquid crystal display includes: a liquid crystal panel including a pair of substrates and super twisted nematic liquid crystal having a twisted structure with a twist angle of 180.degree. or more, the super twisted nematic liquid crystal being contained between the pair of substrates; a pair of polarizing plates which sandwich the liquid crystal panel; an optically anisotropic plate having a twisted structure with a twist angle of 90.degree. or less, the optically anisotropic plate being disposed between one of the pair of polarizing plates and the liquid crystal panel, or between the other one of the pair of polarizing plates and the liquid crystal panel; and a phase plate of a polymeric film which is uniaxially extended, the phase plate being disposed between one of the pair of polarizing plates and the liquid crystal panel, or between the other one of the pair of polarizing plates and the liquid crystal panel.

摘要翻译： 公开了一种液晶显示器。 液晶显示器包括：具有一对基板的液晶面板和具有扭转角度为180度以上的扭转结构的超扭曲向列型液晶，超扭曲向列型液晶包含在该对基板之间; 夹着液晶面板的一对偏光片; 具有扭转角为90°以下的扭转结构的光学各向异性板，光学各向异性板设置在一对偏振片和液晶面板之间，或者在一对偏振片中的另一个之间， 液晶面板; 以及单轴延伸的聚合物膜的相位板，所述相位板配置在所述一对偏振片中的一个和所述液晶面板之间，或者位于所述一对偏振片和所述液晶面板中的另一个之间。

公开(公告)号：US5291323A

公开(公告)日：1994-03-01

申请号：US769922

申请日：1991-09-30

申请人： Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Yumi Yoshimura ,  Keiko Kishimoto

发明人： Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Yumi Yoshimura ,  Keiko Kishimoto

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139

CPC分类号： G02F1/13363 ,  G02F1/1397 ,  G02F2202/40 ,  G02F2413/04 ,  G02F2413/08

摘要： In a liquid crystal display device using uniaxially drawn polymer film as a phase difference plate, as the elevation angle becomes wider, the difference between the retardation of the phase difference plate and the retardation of the liquid crystal display panel becomes larger, and the optical compensation relation is broken, and the viewing angle becomes narrower. To solve this problem, uniaxially drawn polymer films are prepared separately from polycarbonate and polystyrene which differ in the optical properties, and they are disposed as the optical compensation plate at the front side and back side of a liquid crystal cell, or they are laminated and disposed at the front side and back side of a liquid crystal cell.

摘要翻译： 在使用单轴拉伸聚合物膜作为相差板的液晶显示装置中，随着仰角变宽，相位差板的延迟与液晶显示面板的延迟之间的差异变大，光学补偿 关系破裂，视角变窄。 为了解决这个问题，单轴拉伸的聚合物膜与光学性质不同的聚碳酸酯和聚苯乙烯分开制备，并且作为液晶单元的前侧和后侧的光学补偿板被设置，或者它们被层压， 设置在液晶单元的前侧和后侧。

公开(公告)号：US5235450A

公开(公告)日：1993-08-10

申请号：US766510

申请日：1991-09-27

申请人： Yumi Yoshimura ,  Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Keiko Kishimoto

发明人： Yumi Yoshimura ,  Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Keiko Kishimoto

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139

CPC分类号： G02F1/13363 ,  G02F1/1397 ,  G02F2001/133531 ,  G02F2202/40 ,  G02F2413/04 ,  G02F2413/08

摘要： A liquid crystal display apparatus includes a twist supertwisted nematic liquid crystal panel (1) including a liquid crystal layer (8) provided between first and second transparent substrates (2, 3), and a first phase plate group (11; 13, 14) including at least one uniaxially stretched polymer film arranged on the outer surface of the first substrate (2). The apparatus further includes a first polarizing plate (9) arranged on the first phase plate group (11; 13, 14) and a second phase plate group (12; 15, 16) including at least one uniaxially stretched polymer film arranged on the outer surface of the second substrate (3) and. Finally, the apparatus includes a second polarizing plate (10) arranged on the second phase plate group (12; 15, 16), wherein at least one of the uniaxially stretched polymer films (11, 12; 13, 14, 15, 16) has positive optical anisotropy and the others have negative optical anisotropy.

公开(公告)号：US5493431A

公开(公告)日：1996-02-20

申请号：US10362

申请日：1993-01-28

申请人： Yumi Baba ,  Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Keiko Kishimoto

发明人： Yumi Baba ,  Hiroshi Ohnishi ,  Toshiyuki Yoshimizu ,  Keiko Kishimoto

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139

CPC分类号： G02F1/13363 ,  G02F1/1397 ,  G02F2202/40 ,  G02F2413/02 ,  G02F2413/08

摘要： A liquid crystal display device of stable color tone uses phase difference plates made of a uniaxially stretched polymer film and comprises a polarizer plate, a first phase difference plate, a second phase difference plate, a supertwisted nematic type liquid crystal display panel, and a polarizer plate which are stacked on each other in this order. The rate of retardation change with the change in viewing angle of the uniaxially stretched polymer film is denoted coefficient K defined by three-dimensional refractive indexes, coefficient K1 of one of the phase difference plates is set in a range of -1.ltoreq.K1.ltoreq.0.17 and coefficient K2 of the other phase difference plate is set in a range of 0.ltoreq.K2.ltoreq.1.

摘要翻译： 稳定色调的液晶显示装置使用由单轴拉伸聚合物膜制成的相差板，包括偏振片，第一相差板，第二相位差板，超扭曲向列型液晶显示面板和偏振片 板以这种顺序堆叠在一起。 单轴拉伸聚合物膜的视角变化的延迟变化率为三维折射率所定义的系数K，将一个相位差板的系数K1设定在-1

公开(公告)号：US6160595A

公开(公告)日：2000-12-12

申请号：US871616

申请日：1997-06-09

申请人： Keiko Kishimoto

发明人： Keiko Kishimoto

IPC分类号： G02B5/30 ,  F21V8/00 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363

CPC分类号： G02F1/133553 ,  G02F1/133536 ,  G02F2001/133543 ,  G02F2001/133638 ,  G02F2413/15

摘要： An object of the invention is to obtain brighter display in a liquid crystal display apparatus. Light of all the wavelengths in the visible range is converted into circularly polarized light by a first polarization condition converting member, converted into linearly polarized light by a second polarization condition converting member and is modulated by a liquid crystal display device. Then, transmission and block of the light is controlled by a polarizer. Specifically, one of the dextrorotatory circularly polarized light and the levorotatory circularly polarized light is reflected by a spectral member included in the first polarization condition converting member, converted into the other circularly polarized light by a reflecting member included in the first polarization condition converting member and supplied again to the spectral member. The other circularly polarized light is transmitted by the spectral member. Thus, by converting light of all the wavelengths in the visible range into circularly polarized light and then converting the circularly polarized light into linearly polarized light, in principle, 100% of the light is incident on a liquid crystal display device, so that brighter display is achieved.

摘要翻译： 本发明的目的是在液晶显示装置中获得更明亮的显示。 可见光范围内的所有波长的光被第一偏振条件转换元件转换成圆偏振光，由第二偏振条件转换元件转换为线偏振光，并被液晶显示装置调制。 然后，偏振器控制光的透射和阻挡。 具体地，右旋圆偏振光和左旋圆偏振光中的一个被包括在第一偏振条件转换构件中的光谱构件反射，由包括在第一偏振条件转换构件中的反射构件转换成另一个圆偏振光，以及 再次提供给光谱元件。 其他圆偏振光由光谱元件透射。 因此，通过将可见光范围内的所有波长的光转换成圆偏振光，然后将圆偏振光转换为线偏振光，原则上100％的光入射到液晶显示装置上，使得更亮的显示 已完成。

公开(公告)号：US5699137A

公开(公告)日：1997-12-16

申请号：US695985

申请日：1996-08-15

申请人： Keiko Kishimoto

发明人： Keiko Kishimoto

IPC分类号： G02B5/30 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/13363

CPC分类号： G02F1/133632 ,  G02F2413/10

摘要： It is an object of the invention to provide a liquid crystal display device capable of obtaining a wide viewing angle without coloration caused by a viewing angle. A liquid crystal display cell is disposed between a pair of polarizers, and between the liquid crystal display cell and the pair of polarizers, first optical compensation plates are disposed at the side of the liquid crystal display cell, and second optical compensation plates are disposed at the side of the polarizer. The first optical compensation plates have a refractive index anisotropy in the plane, and the refractive index thereof in the thickness direction is nearly equal to the refractive index of a minimum value in the plane, whereas the second optical compensation plates have no refractive index anisotropy in the plane, the refractive index in the thickness direction is greater than the refractive index in the plane, and a positive phase difference is expressed by inclination from the normal direction. By the optical compensation plates, the coloration of the display in the display plane of the liquid crystal display device and in the viewing angle direction inclined in a direction parallel to the display plane from the normal direction of the display plane can be compensated, so that a wide viewing angle of a high contrast is obtained.

摘要翻译： 本发明的目的是提供一种能够获得宽视角而不会由视角引起的着色的液晶显示装置。 液晶显示单元设置在一对偏振器之间，并且在液晶显示单元和一对偏振器之间，第一光学补偿板设置在液晶显示单元侧，第二光学补偿板设置在 偏振器的一侧。 第一光学补偿板在平面中具有折射率各向异性，并且其厚度方向上的折射率几乎等于平面中的最小值的折射率，而第二光学补偿板在折射率方向上不具有折射率各向异性 平面，厚度方向的折射率大于平面内的折射率，正相位差由法线方向的倾斜度表示。 通过光学补偿板，可以补偿液晶显示装置的显示面中的显示器的着色和从显示面的法线方向平行于显示面的方向倾斜的视野角方向，使得 获得高对比度的宽视角。