公开(公告)号：US6166790A

公开(公告)日：2000-12-26

申请号：US168901

申请日：1998-10-09

申请人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02B5/02 ,  G02B3/00 ,  G02B5/04 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363 ,  C09K19/02

CPC分类号： G02F1/13362 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/133553 ,  G02F1/133615 ,  G02F2001/133543 ,  G02F2001/133638 ,  G02F2201/343 ,  G02F2202/022 ,  G02F2203/09 ,  G02F2413/15

摘要： Disclosed are (1) a polarizer having a function of separating incident light into polarized light through reflection and transmission, which has (a) a haze of 10% or less, or (b) a ratio of parallel transmitted light to incident light of 40 to 60%, (c) a ratio of mirror reflected light to the incident light of 25% or more, (d) a ratio of diffusion reflected light to the incident light of 20% or less or (e) a fraction of mirror reflected light to the whole reflected light of 60% or more; (2) an optical element comprising the polarizer, and a 1/4 wavelength formed by one or two or more retardation layers disposed on at least one side thereof; (3) a lighting device comprising a surface light source, and the polarizer or the optical element disposed thereon; and (4) a liquid crystal display comprising the lighting device and a liquid crystal cell arranged on the light outgoing side thereof, with a polarizing plate intervening therebetween.

摘要翻译： 公开了（1）具有通过反射和透射将入射光分离成偏振光的功能的偏振器，其具有（a）10％或更小的雾度，或（b）平行透射光与入射光的比例为40 至60％，（c）镜面反射光与入射光的比例为25％以上，（d）扩散反射光与入射光的比例为20％以下，或（e）反射镜的分数 光线全反射光达60％以上; （2）包括偏振器的光学元件和设置在其至少一侧上的一个或两个或更多个延迟层形成的+ E，fra 1/4 + EE波长; （3）照明装置，其包括表面光源和设置在其上的偏振器或光学元件; 和（4）包括照明装置和布置在其光出射侧的液晶单元的液晶显示器，其间插入有偏振片。

公开(公告)号：US06433853B1

公开(公告)日：2002-08-13

申请号：US09240704

申请日：1999-02-02

申请人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02F11335

CPC分类号： G02F1/13362 ,  G02B5/3016 ,  G02F1/133536 ,  G02F1/13363 ,  G02F2001/133543 ,  G02F2001/133638

摘要： A cholesteric liquid crystal layer has a helical pitch changing in the thickness direction and shows circular dichroism over a wavelength region having a width of at least 50 nm and including a wavelength of 520 nm, wherein the linearly polarized light obtained through a quarter-wavelength plate has a maximum degree of polarization at a wavelength not longer than 520 nm, or the degree of polarization thereof in a wavelength region on the shorter-wavelength side of 520 nm is higher than that in a wavelength region on the longer-wavelength side of 520 nm. The optical element comprises a multilayer structure composed of the cholesteric liquid crystal layer and at least one optical layer superposed thereon which is a retardation compensating plate, a polarizing plate, a light conductive plate, or a quarter-wavelength plate having an Nz of −0.8 to −2.0 and disposed on the longer-helical pitch side of the liquid crystal layer.

摘要翻译： 胆甾型液晶层在厚度方向上具有螺旋形间距变化，并且在宽度为至少50nm并且包括520nm的波长的波长区域上显示圆二色性，其中通过四分之一波长板获得的线偏振光 在不大于520nm的波长处具有最大偏振度，或者在520nm的较短波长侧的波长区域中的偏振度比在520nm的较长波长侧的波长区域中的偏振度高 nm。 光学元件包括由胆甾型液晶层和叠加在其上的至少一个光学层组成的多层结构，其是延迟补偿板，偏振片，导光板或Nz为-0.8的四分之一波长板 至-2.0，并且设置在液晶层的较长螺旋节距侧。

公开(公告)号：US6166799A

公开(公告)日：2000-12-26

申请号：US328597

申请日：1999-06-10

申请人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  C09K19/02

CPC分类号： G02F1/133636 ,  G02B5/3016 ,  G02F1/133504 ,  G02F1/133536 ,  G02F2001/133543

摘要： A liquid crystal element which comprises an oriented liquid crystal polymer and with which a liquid crystal display less apt to have display unevenness in a wide viewing range including the front and slant directions can be fabricated; and an optical element and a polarizing element each containing the liquid crystal element. The liquid crystal element comprises either a layer of an oriented liquid crystal polymer or a substrate and formed thereon the layer of an oriented liquid crystal polymer, wherein the liquid crystal polymer layer has an average in-plane haze of 10% or higher and a dispersion of the in-plane haze H (%) within the range represented by the relationship a-.sqroot.(10a).ltoreq.H.ltoreq.a+.sqroot.(10a) wherein "a" is the average haze (%), or has an average in-plane haze lower than 10% and a dispersion of the in-plane haze H (%) within the range represented by the relationship 0.ltoreq.H.ltoreq.b+.sqroot.(10b) wherein "b" is the average haze (%). The optical element comprises a multilayer structure comprising the liquid crystal element and a retardation film laminated thereon. The polarizing element comprises a multilayer structure comprising the liquid crystal or optical element and a polarizing plate laminated thereon.

摘要翻译： 可以制造包括取向液晶聚合物的液晶元件，并且可以制造在包括前方和倾斜方向的宽观察范围内液晶显示器不易显示不均匀性的液晶元件; 以及各自含有液晶元件的光学元件和偏振元件。 液晶元件由取向液晶聚合物层或基板构成，在其上形成取向液晶聚合物层，其中液晶聚合物层的平均面内浊度为10％以上，分散液 的平均雾度H（％）在由关系a-2ROOT + E，rad（10a）+ EE

公开(公告)号：US6088079A

公开(公告)日：2000-07-11

申请号：US240696

申请日：1999-02-02

申请人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： C09K19/02 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13357

CPC分类号： G02B5/3016 ,  G02F1/133536

摘要： A cholesteric liquid crystal layer which is inhibited from appearing to be colored when viewed from slant directions and thus has excellent viewing angle characteristics, while enabling an improvement in the brightness of liquid crystal displays, etc.; and an optical element and an lighting device with each of which liquid crystal displays and the like excellent in brightness and perceptibility can be fabricated. The cholesteric liquid crystal layer (1) has a helical pitch changing in the thickness direction and shows circular dichroism over a wavelength region having a width of at least 50 nm and including a wavelength of 550 nm, wherein the linearly polarized light obtained through a quarter-wavelength plate has a maximum degree of polarization at a wavelength not shorter than 550 nm, or the degree of polarization thereof in a wavelength region on the longer-wavelength side of 550 nm is higher than that in a wavelength region on the shorter-wavelength side of 550 nm. The optical element comprises a multilayer structure composed of the cholesteric liquid crystal layer and at least one optical layer superposed thereon which is a retardation compensating plate, a polarizing plate, a light conductive plate, or a quarter-wavelength plate having an Nz of -1.2 or larger and disposed on the longer-helical-pitch side of the liquid crystal layer. The lighting device or liquid crystal display comprises the cholesteric liquid crystal layer or optical element disposed on one side of a surface light source or liquid crystal cell.

摘要翻译： 胆甾醇型液晶层从倾斜方向观察时被抑制为不着色，因此具有优异的视角特性，同时能够提高液晶显示器的亮度等; 并且可以制造具有优异的亮度和感知性的液晶显示器等的光学元件和照明装置。 胆甾型液晶层（1）在厚度方向上具有螺旋形间距变化，并且在宽度为至少50nm并且包括波长为550nm的波长区域上呈圆形二色性，其中通过四分之一得到的线偏振光 波长板在不小于550nm的波长处具有最大偏振度，或者在550nm的较长波长侧的波长区域中的偏振度比在较短波长的波长区域中的偏振度高 侧面为550nm。 光学元件包括由胆甾型液晶层和叠加在其上的至少一个光学层构成的多层结构，其是延迟补偿板，偏振片，导光板或Nz为-1.2的四分之一波长板 或更大并且设置在液晶层的较长螺旋节距侧。 照明装置或液晶显示器包括设置在表面光源或液晶单元一侧的胆甾醇型液晶层或光学元件。

公开(公告)号：US6016177A

公开(公告)日：2000-01-18

申请号：US87162

申请日：1998-05-29

申请人： Hironori Motomura ,  Tadayuki Kameyama ,  Naoki Takahashi

发明人： Hironori Motomura ,  Tadayuki Kameyama ,  Naoki Takahashi

IPC分类号： F21V9/14 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13357 ,  C09K19/02

CPC分类号： G02F1/13362 ,  G02B5/3033 ,  G02F1/133536 ,  G02F2001/133543

摘要： Disclosed are a method for producing a circularly polarized separated plate which comprises coating an oriented cholesteric liquid crystal polymer layer with a different kind of cholesteric liquid crystal polymer and heat orienting the resulting coated layer, or heat pressing oriented cholesteric liquid crystal polymer layers on each other, or adhering oriented cholesteric liquid crystal polymer layers to each other through a volatile liquid or a volatile liquid in which a cholesteric liquid crystal polymer is dissolved, thereby forming a close contact laminate of two or more cholesteric liquid crystal polymer layers in which an upper layer is different from a lower layer in helical pitch; a circularly polarized separated plate comprising a close contact laminate of two or more cholesteric liquid crystal polymer layers in which an upper layer is different from a lower layer in helical pitch, the laminate having a mixed layer of cholesteric liquid crystal polymers forming the upper and lower layers, which is different from the upper and lower layers in helical pitch, in a close contact interface thereof to provide multistage changes in helical pitch in the direction of thickness; an optical element in which the circularly polarized separated plate is provided with at least one of a 1/4 wavelength plate and a polarizer; a polarization light source device comprising the circularly polarized separated plate or optical element on a light outgoing side of a light pipe; and a liquid crystal display comprising the circularly polarized separated plate, optical element or polarization light source device on a visual back face side of a liquid crystal cell.

摘要翻译： 公开了一种用于制造圆偏光分离板的方法，其包括用不同种类的胆甾醇型液晶聚合物涂覆取向的胆甾醇型液晶聚合物层，并将得到的涂层热定向或相互热压取向的胆固醇液晶聚合物层 或者通过其中溶解有胆甾醇型液晶聚合物的挥发性液体或挥发性液体彼此相对地取向胆固醇型液晶聚合物层，从而形成两层以上胆甾型液晶聚合物层的紧密接触层叠体，其中上层 与螺旋节距的下层不同; 圆偏振分离板，其包含两层或多层胆甾型液晶聚合物层的紧密接触层压体，其中上层与螺旋间距的下层不同，所述层压板具有形成上下的胆固醇型液晶聚合物的混合层 层，其与螺旋间距的上层和下层不同，在其紧密接触界面中，以在厚度方向上提供螺旋间距的多级变化; 其中所述圆偏振分离板设置有+ E，fra 1/4 + EE波长板和偏振器中的至少一个的光学元件; 偏振光源装置，其在光管的光出射侧包括圆偏振分离板或光学元件; 以及液晶显示器，其包括在液晶单元的视觉背面侧上的圆偏振分离板，光学元件或偏振光源装置。

公开(公告)号：US07746424B2

公开(公告)日：2010-06-29

申请号：US10548085

申请日：2004-03-01

申请人： Tadayuki Kameyama ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Naoki Takahashi

IPC分类号： G02F1/1335

CPC分类号： G02F1/133528 ,  G02F1/133634 ,  G02F2001/133507 ,  G02F2202/28 ,  H01L51/5281

摘要： A high-brightness polarizing plate of the present invention comprises a polarizing plate that comprises a polarizer and a protective film prepared on one or both sides of the polarizer, a brightness enhancement film and an adhesive layer through which the polarizing plate and the brightness enhancement film are laminated with the protective film interposed between them, wherein the protective film has an in-plane retardation Re of 0 to 10 nm and a thickness-direction retardation Rth of −30 to 10 nm, wherein Re=(nx−ny)d and Rth={(nx+ny)/(2−nz)}d. The high-brightness polarizing plate has a small color shift, and can be applied to various image displays such as liquid crystal displays.

摘要翻译： 本发明的高亮度偏振片包括偏振片，其包括偏振片和在偏振片的一面或两面上制备的保护膜，亮度增强膜和粘合剂层，偏振片和亮度增强膜 层叠有夹在它们之间的保护膜，其中保护膜具有0至10nm的面内相位差Re和-30至10nm的厚度方向延迟Rth，其中Re =（nx-ny）d和 Rth = {（nx + ny）/（2-nz）} d。 高亮度偏振片具有小的色偏，并且可以应用于诸如液晶显示器的各种图像显示器。

公开(公告)号：US20060181662A1

公开(公告)日：2006-08-17

申请号：US10548085

申请日：2004-03-01

申请人： Tadayuki Kameyama ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Naoki Takahashi

IPC分类号： G02F1/1335

CPC分类号： G02F1/133528 ,  G02F1/133634 ,  G02F2001/133507 ,  G02F2202/28 ,  H01L51/5281

摘要： A high-brightness polarizing plate of the present invention comprises a polarizing plate that comprises a polarizer and a protective film prepared on one or both sides of the polarizer, a brightness enhancement film and an adhesive layer through which the polarizing plate and the brightness enhancement film are laminated with the protective film interposed between them, wherein the protective film has an in-plane retardation Re of 0 to 10 nm and a thickness-direction retardation Rth of −30 to 10 nm, wherein Re=(nx−ny)d and Rth={(nx+ny)/(2−nz)}d. The high-brightness polarizing plate has a small color shift, and can be applied to various image displays such as liquid crystal displays.

摘要翻译： 本发明的高亮度偏振片包括偏振片，其包括偏振片和在偏振片的一面或两面上制备的保护膜，亮度增强膜和粘合剂层，偏振片和亮度增强膜 层叠有夹在它们之间的保护膜，其中保护膜具有0至10nm的面内相位差Re和-30至10nm的厚度方向延迟Rth，其中Re =（nx-ny）d和 Rth = {（nx + ny）/（2-nzd。高亮度偏振片具有较小的色偏，并且可以应用于诸如液晶显示器的各种图像显示器。

公开(公告)号：USRE38500E1

公开(公告)日：2004-04-20

申请号：US10151007

申请日：2002-05-21

申请人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02F11335

CPC分类号： G02B5/3016 ,  G02F1/133615

摘要： Disclosed are (1) a polarizer having a function of separating incident light into polarized light through reflection and transmission, which has (a) a haze of 10% or less, or (b) a ratio of parallel transmitted light to incident light of 40 to 60%, (c) a ratio of mirror reflected light to the incident light of 25% or more, (d) a ratio of diffusion reflected light to the incident light of 20% or less or (e) a fraction of mirror reflected light to the whole reflected light of 60% or more; (2) an optical element comprising the polarizer, and a ¼ wavelength formed by one or two or more retardation layers disposed on at least one side thereof; (3) a lighting device comprising a surface light source, and the polarizer or the optical element disposed thereon; and (4) a liquid crystal display comprising the lighting device and a liquid crystal cell arranged on the light outgoing side thereof, with a polarizing plate intervening therebetween.

公开(公告)号：US06342934B1

公开(公告)日：2002-01-29

申请号：US09069078

申请日：1998-04-29

申请人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02F11335

CPC分类号： G02F1/13362 ,  G02B5/3016 ,  G02F1/133536 ,  G02F2001/133543

摘要： Disclosed are a polarizer comprising a circularly polarized light separation layer in which two or more cholesteric liquid crystal polymer layers are laminated with each other in a close contact state in a long-short order based on a center wavelength of reflected light, said circularly polarized light separation layer changing in helical pitch in the direction of thickness, a retardation layer arranged on the long-wavelength side of said center wavelength, and a polarizing plate containing a dichroic substance and disposed on the retardation layer, as so desired; a lighting device in which a surface light source is arranged on the circularly polarized light separation layer side of said polarizer; and a liquid crystal display in which said polarizer or said lighting device is arranged on the visual back face side of a liquid crystal cell, directing the retardation layer side thereof to the liquid crystal cell.

摘要翻译： 公开了一种偏振器，其包括圆偏振光分离层，其中基于反射光的中心波长，两个或更多个胆甾醇型液晶聚合物层以紧密接触状态彼此层叠，所述圆偏振光 沿着厚度方向以螺旋间距变化的分离层，布置在所述中心波长的长波长侧的延迟层，以及包含二色性物质并设置在延迟层上的偏振片，如所期望的那样; 照明装置，其中在所述偏振器的圆偏振光分离层侧布置有面光源; 以及液晶显示器，其中所述偏振器或所述照明装置布置在液晶单元的视觉背面侧，将其延迟层侧引导到液晶单元。

公开(公告)号：US5999243A

公开(公告)日：1999-12-07

申请号：US181664

申请日：1998-10-29

申请人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

发明人： Tadayuki Kameyama ,  Hisashi Mihara ,  Hironori Motomura ,  Naoki Takahashi

IPC分类号： G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  C09K19/02

CPC分类号： G02F1/133636 ,  G02B5/3016 ,  G02F1/133504 ,  G02F1/133536 ,  G02F2001/133543

摘要： A liquid crystal element which comprises an oriented liquid crystal polymer and with which a liquid crystal display less apt to have display unevenness in a wide viewing range including the front and slant directions can be fabricated; and an optical element and a polarizing element each containing the liquid crystal element. The liquid crystal element comprises either a layer of an oriented liquid crystal polymer or a substrate and formed thereon the layer of an oriented liquid crystal polymer, wherein the liquid crystal polymer layer has an average in-plane haze of 10% or higher and a dispersion of the in-plane haze H (%) within the range represented by the relationship a-.sqroot.(10a).ltoreq.H.ltoreq.a+.sqroot.(10a) wherein "a" is the average haze (%), or has an average in-plane haze lower than 10% and a dispersion of the in-plane haze H (%) within the range represented by the relationship 0.ltoreq.H.ltoreq.b+.sqroot.(10b) wherein "b" is the average haze (%). The optical element comprises a multilayer structure comprising the liquid crystal element and a retardation film laminated thereon. The polarizing element comprises a multilayer structure comprising the liquid crystal or optical element and a polarizing plate laminated thereon.

摘要翻译： 可以制造包括取向液晶聚合物的液晶元件，并且可以制造在包括前方和倾斜方向的宽观察范围内液晶显示器不易显示不均匀性的液晶元件; 以及各自含有液晶元件的光学元件和偏振元件。 液晶元件由取向液晶聚合物层或基板构成，在其上形成取向液晶聚合物层，其中液晶聚合物层的平均面内浊度为10％以上，分散液 的平均雾度H（％）在由a-2ROOT（10a）