公开(公告)号：US4759614A

公开(公告)日：1988-07-26

申请号：US883952

申请日：1986-07-10

申请人： Hisao Yokokura ,  Katsumi Kondo ,  Yasuo Hanawa ,  Susumu Era ,  Kishiro Iwasaki ,  Tadao Nakata ,  Masato Isogai ,  Teruo Kitamura ,  Akio Mukoh ,  Yasuhiko Kando

发明人： Hisao Yokokura ,  Katsumi Kondo ,  Yasuo Hanawa ,  Susumu Era ,  Kishiro Iwasaki ,  Tadao Nakata ,  Masato Isogai ,  Teruo Kitamura ,  Akio Mukoh ,  Yasuhiko Kando

IPC分类号： G02F1/1333 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/13

CPC分类号： G02F1/133345 ,  G02F1/133711 ,  G02F1/141 ,  Y10T428/1059

摘要： The element comprises a pair of transparent substrates, a pair of light-transmitting electrodes each provided on the respective substrates, a ferroelectric liquid crystal layer disposed between the pair of substrates and orientation control films for the molecules of the ferroelectric liquid crystal provided between the electrodes and the ferroelectric liquid crystal layer. The orientation control film controls a tile angle of a biphenyle series nematic liquid crystal having biphenyl ring system below 1.5.degree. and causes a uniform molecule orientation characteristic and a memory property for the ferroelectric liquid crystal element of smectic C* liquid crystal and having a liquid crystal layer thickness of even more than 4 .mu.m.

摘要翻译： 该元件包括一对透明基板，各自设置在各个基板上的一对透光电极，设置在一对基板之间的铁电液晶层和设置在电极之间的铁电液晶分子的取向控制膜 和铁电液晶层。 取向控制膜控制具有低于1.5°的联苯环系的联苯系列向列型液晶的平铺角度，并且对近晶C *液晶的铁电液晶元件具有均匀的分子取向特性和记忆特性，并具有液晶 层厚度甚至超过4μm。

公开(公告)号：US4781439A

公开(公告)日：1988-11-01

申请号：US5899

申请日：1987-01-22

申请人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

发明人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

IPC分类号： G02F1/133 ,  C08G73/10 ,  G02F1/1337 ,  G02F1/139

CPC分类号： C08G73/1039 ,  C08G73/105 ,  G02F1/133723 ,  G02F1/1397 ,  Y10T428/1014 ,  Y10T428/1023

摘要： A liquid crystal display element comprising a pair of substrates, a pair of electrodes provided on the respective substrates, at least one of which is transparent and a liquid crystal layer disposed between said substrates, the liquid crystal layer comprising a nematic liquid crystal, which exhibits a positive dielectric constant anisotropy and contains an optically active substance, the liquid crystal moleccule orientation direction in the liquid crystal layer is twisted in the range of 200.degree. to 250.degree. from the one substrate surface toward the other substrate surface so as to form a helical structure therein. A polyimide orientation film is provided between the electrodes and the liquid crystal layer. The polyimide orientation film is one made of a polyimide prepared by reacting a diamine compound having a long-chain hydrocarbon group or a diamine compound having a trifluoromethyl group with a tetracarboxylic dianhydride and causes a pretilt angle of at least 3.degree. relative to the nematic liquid crystal molecules. The liquid crystal display element of the present invention is free from a scattering domain.

摘要翻译： 一种液晶显示元件，包括一对基板，一对电极，设置在各个基板上，其中至少一个是透明的，并且液晶层设置在所述基板之间，所述液晶层包括向列型液晶， 正介电常数各向异性，并含有光学活性物质，液晶层中的液晶分子取向方向从一个基板表面向另一个基板表面扭曲在200°至250°的范围内，从而形成螺旋 结构。 在电极和液晶层之间设置聚酰亚胺取向膜。 聚酰亚胺取向膜是由具有长链烃基的二胺化合物或具有三氟甲基的二胺化合物与四羧酸二酐反应制备的聚酰亚胺制成的，并且相对于向列液体产生至少3度的预倾角 晶体分子。 本发明的液晶显示元件没有散射域。

公开(公告)号：USRE34885E

公开(公告)日：1995-03-28

申请号：US905407

申请日：1992-06-29

申请人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

发明人： Hisao Yokokura ,  Tadao Nakata ,  Susumu Era ,  Yasuo Hanawa ,  Kishiro Iwasaki ,  Teruo Kitamura ,  Akio Mukoh ,  Toshikazu Narahara ,  Yasuhiko Kando ,  Shunichi Numata ,  Kooji Fujisaki

IPC分类号： G02F1/133 ,  C08G73/10 ,  G02F1/1337 ,  G02F1/139 ,  G02F1/13 ,  C09K19/52

CPC分类号： C08G73/1039 ,  C08G73/105 ,  G02F1/133723 ,  G02F1/1397 ,  Y10T428/1014 ,  Y10T428/1023

摘要： A liquid crystal display element comprising a pair of substrates, a pair of electrodes provided on the respective substrates, at least one of which is transparent and a liquid crystal layer disposed between said substrates, the liquid crystal layer comprising a nematic liquid crystal, which exhibits a positive dielectric constant anisotropy and contains an optically active substance, the liquid crystal moleccule orientation direction in the liquid crystal layer is twisted in the range of 200.degree. to 250.degree. from the one substrate surface toward the other substrate surface so as to form a helical structure therein. A polyimide orientation film is provided between the electrodes and the liquid crystal layer. The polyimide orientation film is one made of a polyimide prepared by reacting a diamine compound having a long-chain hydrocarbon group or a diamine compound having a trifluoromethyl group with a tetracarboxylic dianhydride and causes a pretilt angle of at least 3.degree. relative to the nematic liquid crystal molecules. The liquid crystal display element of the present invention is free from a scattering domain.

公开(公告)号：US5220447A

公开(公告)日：1993-06-15

申请号：US494551

申请日：1990-03-16

申请人： Hisao Yokokura ,  Teruo Kitamura ,  Akio Mukoh ,  Junichi Hirakata ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani

发明人： Hisao Yokokura ,  Teruo Kitamura ,  Akio Mukoh ,  Junichi Hirakata ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani

IPC分类号： G02F1/133 ,  B01J19/00 ,  B29C41/24 ,  C08J5/18 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/137 ,  G02F1/139

CPC分类号： G02B5/3083 ,  B29C55/00 ,  B29D11/0074 ,  G02F1/13363 ,  G02F1/133636 ,  B29K2105/0079 ,  G02F1/1397 ,  G02F2202/40 ,  G02F2413/01

摘要： A liquid crystal display device comprising: a liquid crystal display element formed by holding, between two substrates at least one of which has a light-permeable electrode, a liquid crystal layer in which liquid crystal molecules of a nematic liquid crystal having positive dielectric anisotropy and containing an optically active substance has a helical axis perpendicular to the substrates between the substrates and are helically oriented, and the liquid crystal molecules between the substrates have a twist angle of 180 to 270 degrees, and a phase plate formed by stacking water surface development films of an organic polymer with changing the orientation axes thereof at a constant angle, wherein the contrast ratio, a ratio between brightness in white display and brightness in black display, is remarkably excellent over that of a device obtained by stacking plastic films, and the transmissivity, a quotient of background brightness and light source brightness, is equivalent to that of a conventional double layer structure liquid crystal display device.

摘要翻译： 一种液晶显示装置，包括：液晶显示元件，其通过在其中至少一个具有透光性电极的两个基板之间保持其液晶层，其中具有正介电各向异性的向列型液晶的液晶分子和 含有光学活性物质的螺旋轴具有垂直于基板之间的基板的螺旋轴并且被螺旋取向，并且基板之间的液晶分子具有180至270度的扭曲角度，并且通过将水表面显影膜 的有机聚合物以恒定角度改变其取向轴，其中对比度，白色显示中的亮度与黑色显示中的亮度之间的比例，显着优于通过堆叠塑料膜获得的装置的透射率 ，背景亮度和光源亮度的商相当于a 常规双层结构液晶显示装置。

公开(公告)号：US5067797A

公开(公告)日：1991-11-26

申请号：US326557

申请日：1989-03-21

申请人： Hisao Yokokura ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani ,  Tsunetaka Matsumoto ,  Yasuo Imanishi

发明人： Hisao Yokokura ,  Tadao Nakada ,  Teruo Kitamura ,  Akio Mukoh ,  Yasuhiko Kando ,  Isoji Sakai ,  Yasuo Fujimura ,  Noboru Masutani ,  Tsunetaka Matsumoto ,  Yasuo Imanishi

IPC分类号： C09K19/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/40 ,  G02F1/1337

CPC分类号： B82Y30/00 ,  C09K19/12 ,  C09K19/2007 ,  C09K19/2021 ,  C09K19/30 ,  C09K19/408 ,  G02F1/133711 ,  C09K2019/0448 ,  G02F2001/133726

摘要： A liquid crystal display cell, wherein orientation films are made of an organic polymer such as polyimide, polyamide, liquid crystal polymer having one or more mesogen groups in a main chain or side chain and produced by spreading an organic polymer solution on a water surface, is excellent in memory properties and contrast and generates no static electricity, no short circuit between electrodes and no breaking of electrodes.

摘要翻译： 一种液晶显示单元，其中取向膜由聚酰亚胺，聚酰胺，主链或侧链中具有一个或多个介晶基的液晶聚合物等有机聚合物制成，并通过在水面上铺展有机聚合物溶液而制成， 记忆特性和对比度优异，不产生静电，电极之间无短路，无电极断裂。

公开(公告)号：US4381886A

公开(公告)日：1983-05-03

申请号：US234261

申请日：1981-02-13

申请人： Hisao Yokokura ,  Teruo Kitamura ,  Ren Ito ,  Fumio Nakano ,  Hirosada Morishita ,  Mikio Sato ,  Yasuhiko Kando

发明人： Hisao Yokokura ,  Teruo Kitamura ,  Ren Ito ,  Fumio Nakano ,  Hirosada Morishita ,  Mikio Sato ,  Yasuhiko Kando

IPC分类号： G02F1/1337 ,  G02F1/13

CPC分类号： G02F1/133711 ,  Y10T428/1023

摘要： A liquid crystal display element which may have a multi-layer structure comprising substrates having electrodes and liquid crystal orientation controlling films on the sides thereof facing a liquid crystal layer and one or more liquid crystal layers interposed between said substrates, characterized in that the liquid crystal orientation controlling film is made from a copolymer produced by reacting a dibasic acid dihydrazide, a diamine and a tetracarboxylic acid dianhydride, followed by ring closure and dehydration with heating, is excellent in transparency and the electrode (partially reflected) pattern is hardly observable.

摘要翻译： 一种液晶显示元件，其可以具有多层结构，其包括在其侧面上具有电极的液晶取向控制膜和液晶层以及插入在所述基板之间的一个或多个液晶层的基板，其特征在于，液晶 取向控制膜由通过二元酸二酰肼，二胺和四羧酸二酸酐反应而制得的共聚物，随后加热闭环和脱水而制成，透明度优异，电极（部分反映）图形几乎不可观察到。

公开(公告)号：US4664482A

公开(公告)日：1987-05-12

申请号：US838712

申请日：1986-03-12

申请人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa

发明人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/139 ,  G02F1/13

CPC分类号： G02F1/1397

摘要： A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 200.degree. and 260.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively.

摘要翻译： 一种液晶显示装置，其中具有正介电各向异性并添加有手性材料的向列液晶被密封在一对上基板和下基板之间，以便构成螺旋结构在沿200°和260°之间的范围内扭曲 设置在上下基板上的一对偏振片的偏振轴或吸收轴分别以与上下基板相邻的液晶分子的长轴成一定角度或预定角度偏移 。

公开(公告)号：US4652088A

公开(公告)日：1987-03-24

申请号：US695942

申请日：1985-01-29

申请人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa

发明人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa

IPC分类号： G02F1/139 ,  G02F1/137

CPC分类号： G02F1/1397

摘要： A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 90.degree. and 160.degree. along a direction of thickness thereof, polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are inclined by a predetermined angle falling within a range between 25.degree. and 65.degree. with respect to major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively, and in the direction of the twist of the liquid crystal, and a product .DELTA.n.multidot.d of a thickness d (.mu.m) and an optical anisotropy .DELTA.n of a liquid crystal layer falls within a range from 0.8 .mu.m to 1.2 .mu.m.

摘要翻译： 一种液晶显示装置，其中具有正介电各向异性并添加有手性材料的向列液晶被密封在一对上基板和下基板之间，以便构成沿着90度至160度的螺旋结构扭曲的螺旋结构 设置在上下基板上的一对偏振片的厚度方向，偏振轴或吸收轴相对于相邻于液晶分子的长轴在25度和65度之间的范围内倾斜预定角度 上下基板和液晶的扭转方向，以及液晶层的厚度d（μm）和光学各向异性DELTA n的乘积DELTA nxd在0.8以下的范围内 亩至1.2亩。

公开(公告)号：US4653865A

公开(公告)日：1987-03-31

申请号：US847166

申请日：1986-04-02

申请人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa ,  Yoshio Hanada

发明人： Yasuhiko Kando ,  Tamihito Nakagomi ,  Shinji Hasegawa ,  Yoshio Hanada

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/137 ,  G02F1/139 ,  G09F9/35 ,  G02F1/13

CPC分类号： G02F1/1397

摘要： A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 140.degree. and 250.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively, and a ratio of thickness of the nematic liquid crystal to a natural molecular helical pitch of the nematic liquid crystal added with a chiral material falls within a range of from 0.14 to 0.60 inclusive.

摘要翻译： 一种液晶显示装置，其中具有正介电各向异性并添加有手性材料的向列型液晶被密封在一对上基板和下基板之间，以便构成螺旋结构在沿140°和250°之间的范围内扭曲 设置在上下基板上的一对偏振片的偏振轴或吸收轴分别以与上下基板相邻的液晶分子的长轴成一定角度或预定角度偏移 ，并且向列相液晶的厚度与添加有手性物质的向列型液晶的天然分子螺距的比例在0.14至0.60的范围内。

公开(公告)号：US4759612A

公开(公告)日：1988-07-26

申请号：US888429

申请日：1986-07-23

申请人： Hideaki Nakatsuka ,  Mikio Kanazaki ,  Yasuhiko Kando ,  Toshihiko Tojo ,  Shinji Hasegawa

发明人： Hideaki Nakatsuka ,  Mikio Kanazaki ,  Yasuhiko Kando ,  Toshihiko Tojo ,  Shinji Hasegawa

IPC分类号： G02F1/133 ,  G02F1/1335 ,  G02F1/139 ,  G02F1/13

CPC分类号： G02F1/1397 ,  G02F1/133533

摘要： A liquid crystal display device comprises a liquid crystal layer sandwiched between upper and lower electrode substrates subjected to aligning treatment. The liquid crystal layer includes a nematic liquid crystal added with a chiral material and has a 160.degree.-360.degree. twisted helical structure. A pair of polarizers are disposed adjacent to the electrode substrates with their polarization or absorption axes inclined by respective predetermined angles with respect to the aligning directions of the electrode substrates. At least one of the polarizers is formed by a color polarizer for compensating a wavelength dependence of transmittance (or the coloring due to birefringence) resulting from the anti-coincidence between the polarization or absorption axis of the polarizer and the aligning direction of the electrode substrate, i.e. an optical axis of liquid crystal molecules adjacent to the substrate, so that light emerging from the device becomes approximately achromatic or colorless.

摘要翻译： 液晶显示装置包括夹在经过对准处理的上电极基板和下电极基板之间的液晶层。 液晶层包括添加有手性材料的向列型液晶，并具有160°-360°扭曲的螺旋结构。 一对偏振器邻近电极基板设置，其极化或吸收轴相对于电极基板的排列方向倾斜各自的预定角度。 偏振器中的至少一个由彩色偏振器形成，用于补偿由偏振片的偏振或吸收轴与电极基板的排列方向之间的反重合导致的透射率（或由于双折射引起的着色）的波长依赖性 即与基板相邻的液晶分子的光轴，使得从该器件出射的光变成大致无色或无色。