公开(公告)号：US07462382B2

公开(公告)日：2008-12-09

申请号：US10535248

申请日：2003-12-16

申请人： Yoji Ito ,  Tomokazu Yasuda ,  Nobutaka Fukagawa ,  Makoto Tanaka ,  Keiji Mihayashi

发明人： Yoji Ito ,  Tomokazu Yasuda ,  Nobutaka Fukagawa ,  Makoto Tanaka ,  Keiji Mihayashi

IPC分类号： G02F1/13363 ,  B05D1/34

CPC分类号： G02B5/3016 ,  G02F1/13363 ,  Y10T428/1041 ,  Y10T428/105 ,  Y10T428/1077

摘要： The present invention provides a method for producing an optical compensating sheet, comprising a step of simultaneously coating at least two coating solutions on a transparent support, wherein at least one of the coating solutions simultaneously coated in that step contains a liquid crystalline compound and another coating solution contains a surface active agent; an optical compensating sheet obtained by this method; an optical film comprising a support having thereon an optically anisotropic layer formed containing a liquid crystalline compound and a fluoroaliphatic group-containing copolymer containing a repeating unit derived from a fluoroaliphatic group-containing (meth)acrylate monomer and a repeating unit derived from a polyoxyalkylene (meth)acrylate monomer; and a polarizing plate and a liquid crystal display device each using the optical compensating sheet or optical film.

摘要翻译： 本发明提供了一种光学补偿片的制造方法，包括在透明支撑体上同时涂覆至少两种涂布液的步骤，其中在该步骤中同时涂布的至少一种涂布溶液含有液晶化合物和另一涂层 溶液含有表面活性剂; 通过该方法获得的光学补偿片; 一种光学膜，包括其上具有包含液晶化合物的光学各向异性层的支撑体和含有含氟脂族基团的（甲基）丙烯酸酯单体的衍生自聚氧化烯的重复单元的含氟脂族基团的共聚物 甲基）丙烯酸酯单体; 以及各自使用光学补偿片或光学膜的偏振片和液晶显示装置。

公开(公告)号：US07324177B2

公开(公告)日：2008-01-29

申请号：US11498739

申请日：2006-08-04

申请人： Hiroyuki Kawanishi ,  Yoji Ito

发明人： Hiroyuki Kawanishi ,  Yoji Ito

IPC分类号： G02F1/1335

CPC分类号： G02B5/0226 ,  G02B5/0278 ,  G02B5/3016 ,  G02B5/3033 ,  G02F1/133504 ,  G02F1/133528

摘要： The present invention is to provide a polarizing plate capable of providing a liquid crystal display which is widened in the angle of visibility (in particular, the downward angle of visibility), hardly accompanied by thickening of the thickness of a liquid crystal panel, lowering of contrast due to variation of a visual angle, gradation reverse, black-and-white reverse, and hue variation, by using a light-scattering layer, a polarizer and an optical anisotropic layer comprising a liquid crystal compound, and the polarizing plate of the present invention comprises a polarizer; an optical anisotropic layer containing a liquid crystal compound; and a light-scattering layer containing a light-transmitting resin and a light-transmitting diffusing agent having a refractive index different from that of the light-transmitting resin, wherein the light-transmitting diffusing agent is dispersed in the light-transmitting resin, and liquid crystal display using the same.

摘要翻译： 本发明提供一种能够提供可见度（特别是向下视角）加宽的液晶显示器的偏光板，几乎不伴随液晶面板的厚度的增厚， 通过使用光散射层，偏振片和包括液晶化合物的光学各向异性层，由于视角，灰度反转，黑白反转和色相变化的变化而产生的对比度，以及 本发明包括偏振器; 含有液晶化合物的光学各向异性层; 以及含有透光性树脂和透光性树脂的折射率不同的透光性扩散剂的光散射层，其中，所述透光性扩散剂分散在所述透光性树脂中， 液晶显示器使用相同。

公开(公告)号：US20070229740A1

公开(公告)日：2007-10-04

申请号：US11730307

申请日：2007-03-30

申请人： Yoji Ito

发明人： Yoji Ito

IPC分类号： G02F1/1335

CPC分类号： G02F1/1393 ,  G02F1/133528 ,  G02F1/133632 ,  G02F2202/28 ,  G02F2413/105 ,  G02F2413/13

摘要： Provided are a liquid crystal display device, in particular, an optical compensation film and a polarizing plate having an excellent optical compensation function for OCB mode liquid crystal display device which has a rapid response speed and a suitability for moving images and capable of further contributing to thinning the liquid crystal display device, as well as the OCB mode liquid crystal display device having a high display grade, the rapid response speed, the suitability for moving images and a high transmittance.For this purpose, a roll-shaped lengthy optical compensation film wherein values of Re(0°), Re(40°) and Re(−40°) thereof are in the ranges of 37±6 nm, 50±6 nm and 124±12 nm, respectively is provided.

摘要翻译： 本发明提供一种液晶显示装置，特别是对OCB模式液晶显示装置具有优异的光学补偿功能的光学补偿膜和偏光板，其具有快速的响应速度和适用于运动图像的能力，并能够进一步有助于 使液晶显示装置变薄，以及具有高显示等级，快速响应速度，运动图像的适用性和高透射率的OCB模式液晶显示装置。 为此，其中Re（0°），Re（40°）和Re（-40°）的值在37±6nm，50±6nm和124的范围内的卷状长光学补偿膜 分别设置±12nm。

公开(公告)号：US20070123675A1

公开(公告)日：2007-05-31

申请号：US11600890

申请日：2006-11-17

申请人： Yoji Ito ,  Yukio Shinagawa ,  Ichiro Amimori ,  Keiichi Taguchi

发明人： Yoji Ito ,  Yukio Shinagawa ,  Ichiro Amimori ,  Keiichi Taguchi

IPC分类号： B05D5/06 ,  B05D3/12 ,  C08F118/02

CPC分类号： C09K19/32 ,  C08J5/18 ,  C08J2329/04 ,  C09K19/60 ,  C09K2219/03 ,  G02B5/3033

摘要： An optical film formed by a method comprising stretching a film comprising a polyvinyl alcohol or a modified polyvinyl alcohol at an oblique angle ranging from 10 to 80 degrees to the machine direction of the film.

摘要翻译： 一种光学膜，其通过以下方式形成：包括以与膜的机器方向成10至80度的倾斜角度拉伸包含聚乙烯醇或改性聚乙烯醇的膜。

公开(公告)号：US20060268199A1

公开(公告)日：2006-11-30

申请号：US11498739

申请日：2006-08-04

申请人： Hiroyuki Kawanishi ,  Yoji Ito

发明人： Hiroyuki Kawanishi ,  Yoji Ito

IPC分类号： G02F1/1335

CPC分类号： G02B5/0226 ,  G02B5/0278 ,  G02B5/3016 ,  G02B5/3033 ,  G02F1/133504 ,  G02F1/133528

摘要： The present invention is to provide a polarizing plate capable of providing a liquid crystal display which is widened in the angle of visibility (in particular, the downward angle of visibility), hardly accompanied by thickening of the thickness of a liquid crystal panel, lowering of contrast due to variation of a visual angle, gradation reverse, black-and-white reverse, and hue variation, by using a light-scattering layer, a polarizer and an optical anisotropic layer comprising a liquid crystal compound, and the polarizing plate of the present invention comprises a polarizer; an optical anisotropic layer containing a liquid crystal compound; and a light-scattering layer containing a light-transmitting resin and a light-transmitting diffusing agent having a refractive index different from that of the light-transmitting resin, wherein the light-transmitting diffusing agent is dispersed in the light-transmitting resin, and liquid crystal display using the same.

摘要翻译： 本发明提供一种能够提供可见度（特别是向下视角）加宽的液晶显示器的偏光板，几乎不伴随液晶面板的厚度的增厚， 通过使用光散射层，偏振片和包括液晶化合物的光学各向异性层，由于视角，灰度反转，黑白反转和色相变化的变化而产生的对比度，以及 本发明包括偏振器; 含有液晶化合物的光学各向异性层; 以及含有透光性树脂和透光性树脂的折射率不同的透光性扩散剂的光散射层，其中，所述透光性扩散剂分散在所述透光性树脂中， 液晶显示器使用相同。

公开(公告)号：US07095464B2

公开(公告)日：2006-08-22

申请号：US10343643

申请日：2002-10-04

申请人： Yoji Ito

发明人： Yoji Ito

IPC分类号： G02F1/1335

CPC分类号： G02F1/1335 ,  G02B5/0226 ,  G02B5/0242 ,  G02B5/0278 ,  G02B5/3016 ,  G02F1/133632 ,  G02F2413/105

摘要： A liquid crystal display of transmission type comprises a light source, a polarizing film, a liquid crystal cell and another polarizing film in this order. An optical compensatory sheet is further provided between the liquid crystal cell and the polarizing film on a light source side or between the liquid crystal cell and the polarizing film on a display side. The optical compensatory sheet comprises a transparent support and an optically anisotropic layer. The optically anisotropic layer contains a discotic compound having a discotic plane. The discotic plane is inclined from a surface of the support surface at an angle. The angle varies along a direction of depth of the optically anisotropic layer. The liquid crystal display has a difference in chromaticity (ΔCuv) of 0.05 or less. The difference is measured between an image seen frontally and an image seen rightward or leftward at a viewing angle of 60°.

摘要翻译： 透射型的液晶显示器依次包括光源，偏振膜，液晶单元和另一个偏振膜。 液晶单元与偏光膜之间还可以在液晶单元和显示面侧的偏光膜之间设置光补偿片。 光学补偿片包括透明支撑体和光学各向异性层。 光学各向异性层含有具有盘状平面的盘状化合物。 盘状平面以一定角度从支撑表面的表面倾斜。 该角度沿着光学各向异性层的深度方向变化。 液晶显示器的色度差（DeltaCuv）为0.05以下。 在前方看到的图像与以60°的视角向右或向左看的图像之间的差异是测量的。

公开(公告)号：US07078078B2

公开(公告)日：2006-07-18

申请号：US10052440

申请日：2002-01-23

申请人： Yoji Ito

发明人： Yoji Ito

IPC分类号： G02F1/13363

CPC分类号： G02F1/133634 ,  G02B5/3016 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/1082 ,  Y10T428/1086

摘要： An optical compensatory sheet comprises a transparent support and an optically anisotropic layer. The optically anisotropic layer is formed from liquid crystal molecules and monomers having four or more double bonds. The monomers are polymerized to form a polymer in the optically anisotropic layer.

公开(公告)号：US20060114385A1

公开(公告)日：2006-06-01

申请号：US10520732

申请日：2004-10-28

申请人： Yoji Ito ,  Ryota Matsubara

发明人： Yoji Ito ,  Ryota Matsubara

IPC分类号： G02F1/1335

CPC分类号： G02F1/133632 ,  G02F1/1395 ,  G02F2413/105

摘要： A liquid crystal cell of bend alignment mode or hybrid alignment mode should be optically compensated suitably enough to display an image of high contrast. In the displayed image, change of hue is little, and no inversion of gradation is observed. In a liquid crystal display having a liquid crystal cell of bend alignment mode and a pair of polarizing plates, one of the polarizing plates comprises a polarizing membrane and two optically anisotropic layers. A first optically anisotropic layer is made from discotic compounds oriented in hybrid alignment, and is placed so that a direction giving the maximum refractive index in plane may be essentially at 45° to a transmission axis in plane of the polarizing membrane. The second optically anisotropic layer consists of a cellulose ester film, and is placed so that a direction giving the maximum refractive index in plane may be essentially parallel or perpendicular to a transmission axis in plane of the polarizing membrane. The liquid crystal cell of bend alignment mode and the first and second optically anisotropic layers have appropriate optical characters measured at any wavelength of 450 nm, 550 nm and 630 nm. Similar optical characters are also effective in a liquid crystal cell of hybrid alignment mode.

公开(公告)号：US20060072054A1

公开(公告)日：2006-04-06

申请号：US10536988

申请日：2003-12-11

申请人： Yoji Ito

发明人： Yoji Ito

IPC分类号： G02F1/1335 ,  G02F1/1333

CPC分类号： G02F1/133528 ,  G02F1/133504 ,  G02F1/133634 ,  G02F1/1393 ,  G02F1/1395 ,  G02F2413/105

摘要： A liquid crystal display of OCB mode or VA mode comprises a backlight unit, a backlight-side polarizing plate, a liquid crystal cell of OCB mode or VA mode, and a viewer-side polarizing plate in order. The viewer-side polarizing plate comprises a first transparent protective film, a polarizing membrane, a second transparent protective film and a light-diffusing layer in order. In the liquid crystal display of OCB mode, an optically anisotropic layer is formed from liquid crystal compound on the first transparent protective film. The first transparent protective film is a cellulose acetate film having a Re retardation value of 20 to 70 nm and a Rth retardation value of 100 to 500 nm. The light-diffusing layer comprises transparent resin and transparent fine particles dispersed therein. The transparent resin and the transparent fine particles have refractive indices that are different from each other.

摘要翻译： OCB模式或VA模式的液晶显示器包括背光单元，背光侧偏振板，OCB模式或VA模式的液晶单元和观看者侧偏光板。 观察者侧偏振片依次包括第一透明保护膜，偏振膜，第二透明保护膜和光漫射层。 在OCB模式的液晶显示器中，在第一透明保护膜上由液晶化合物形成光学各向异性层。 第一透明保护膜是Re阻滞值为20〜70nm，Rth延迟值为100〜500nm的醋酸纤维素膜。 光漫射层包括透明树脂和分散在其中的透明细颗粒。 透明树脂和透明微粒具有彼此不同的折射率。

公开(公告)号：US20060040070A1

公开(公告)日：2006-02-23

申请号：US10535248

申请日：2003-12-16

申请人： Yoji Ito ,  Tomokazu Yasuda ,  Nobutaka Fukagawa ,  Makoto Tanaka ,  Keiji Mihayashi

发明人： Yoji Ito ,  Tomokazu Yasuda ,  Nobutaka Fukagawa ,  Makoto Tanaka ,  Keiji Mihayashi

IPC分类号： C09K19/00

CPC分类号： G02B5/3016 ,  G02F1/13363 ,  Y10T428/1041 ,  Y10T428/105 ,  Y10T428/1077

摘要： The present invention provides a method for producing an optical compensating sheet, comprising a step of simultaneously coating at least two coating solutions on a transparent support, wherein at least one of the coating solutions simultaneously coated in that step contains a liquid crystalline compound and another coating solution contains a surface active agent; an optical compensating sheet obtained by this method; an optical film comprising a support having thereon an optically anisotropic layer formed containing a liquid crystalline compound and a fluoroaliphatic group-containing copolymer containing a repeating unit derived from a fluoroaliphatic group-containing (meth)acrylate monomer and a repeating unit derived from a polyoxyalkylene (meth)acrylate monomer; and a polarizing plate and a liquid crystal display device each using the optical compensating sheet or optical film.

摘要翻译： 本发明提供了一种光学补偿片的制造方法，包括在透明支撑体上同时涂覆至少两种涂布液的步骤，其中在该步骤中同时涂布的至少一种涂布溶液含有液晶化合物和另一涂层 溶液含有表面活性剂; 通过该方法获得的光学补偿片; 一种光学膜，包括其上具有包含液晶化合物的光学各向异性层的支撑体和含有含氟脂族基团的（甲基）丙烯酸酯单体的衍生自聚氧化烯的重复单元的含氟脂族基团的共聚物 甲基）丙烯酸酯单体; 以及各自使用光学补偿片或光学膜的偏振片和液晶显示装置。