公开(公告)号：US4976887A

公开(公告)日：1990-12-11

申请号：US275383

申请日：1988-11-23

申请人： Kohki Takatoh ,  Masanori Sakamoto ,  Kazuyuki Sunohara

发明人： Kohki Takatoh ,  Masanori Sakamoto ,  Kazuyuki Sunohara

IPC分类号： C07C69/00 ,  C07C69/773 ,  C09K19/32

CPC分类号： C09K19/32

摘要： A compound represented by formula: ##STR1## In the formula, Ar represents ##STR2## and each of Ra and Rb independently represents an optically non-active alkyl group or an optically active group having an asymmetric carbon atom. Either Ra or Rb is the optically active group. X represents ##STR3## Each of l and m represents 0 or 1.

公开(公告)号：US5321534A

公开(公告)日：1994-06-14

申请号：US12731

申请日：1993-02-03

申请人： Kohki Takatoh ,  Masanori Sakamoto

发明人： Kohki Takatoh ,  Masanori Sakamoto

IPC分类号： C09K19/02 ,  C09K19/04 ,  C09K19/54 ,  G02F1/1333 ,  G02F1/1334 ,  G09F9/30 ,  G02F1/13

CPC分类号： C09K19/04 ,  C09K19/544

摘要： A liquid crystal display element comprises a pair of substrates having electrodes formed thereon, and a liquid crystal layer interposed between the substrates. The liquid crystal layer contains a gel of a mixture comprising an organic compound having a perfluoroalkyl group and a liquid crystal material.

摘要翻译： 液晶显示元件包括一对其上形成有电极的基板，以及夹在基板之间的液晶层。 液晶层含有包含具有全氟烷基的有机化合物和液晶材料的混合物的凝胶。

公开(公告)号：US5128788A

公开(公告)日：1992-07-07

申请号：US589781

申请日：1990-09-26

申请人： Kohki Takatoh ,  Masanori Sakamoto

发明人： Kohki Takatoh ,  Masanori Sakamoto

IPC分类号： C08G59/17 ,  G02F1/1337

CPC分类号： G02F1/133711 ,  G02F1/133788 ,  G02F2001/133765 ,  Y10T428/1005

摘要： Disclosed herein is a liquid-crystal orientating film which is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions, and which is designed to orientate liquid-crystal molecules in the direction in which the portions of the film are contracted and non-contracted. The liquid-crystal orientating film has been manufactured by applying light to selected portions of a polymer film, thereby photo-curing these portions, thus forming stripe-shaped contracted portions, stretching the remaining portions of the film, which are located adjacent to the contracted portions, by virtue of the contraction of the portions applied with light.

公开(公告)号：US06876426B2

公开(公告)日：2005-04-05

申请号：US10796134

申请日：2004-03-10

申请人： Rieko Fukushima ,  Kohki Takatoh

发明人： Rieko Fukushima ,  Kohki Takatoh

IPC分类号： G02F1/137 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/141 ,  C09K19/02

CPC分类号： G02F1/141 ,  G02F1/133723

摘要： There is a liquid crystal display element capable of obtaining a good display performance which is not influenced by the deterioration with the time course and the history of applied voltage. The liquid crystal display element comprises: a first electrode substrate having a first transparent substrate, a first electrode formed on the first substrate, and a first alignment layer formed on the first substrate so as to cover the first electrode; a second electrode substrate having a second transparent substrate, a second electrode formed on the second substrate, and a second alignment layer formed on the second substrate so as to cover the second electrode; and a light modulating layer of an anti-ferroelectric liquid crystal material which is sandwiched between the first and second electrode substrates covered with alignment layers and which has a thresholdless voltage-transmittance characteristic, wherein the first and second alignment layers are combined with the liquid crystal material so that a shifted angle between the optical axis θB and an optical axis θOA of a batonnet is within ±1 degree.

摘要翻译： 存在能够获得良好的显示性能的液晶显示元件，其不受时间过程和施加电压的历史的劣化的影响。 液晶显示元件包括：具有第一透明基板的第一电极基板，形成在第一基板上的第一电极和形成在第一基板上以覆盖第一电极的第一取向层; 具有第二透明基板的第二电极基板，形成在第二基板上的第二电极和形成在第二基板上以覆盖第二电极的第二取向层; 以及夹在由取向层覆盖的第一和第二电极基板之间的具有无阈值电压透射特性的反铁电液晶材料的光调制层，其中第一和第二取向层与液晶 材料，使得光轴thetaB与标准棒的光轴theta之间的偏移角在±1度内。

公开(公告)号：US06642990B2

公开(公告)日：2003-11-04

申请号：US09948641

申请日：2001-09-10

申请人： Rieko Fukushima ,  Tatsuo Saishu ,  Rei Hasegawa ,  Hajime Yamaguchi ,  Kohki Takatoh

发明人： Rieko Fukushima ,  Tatsuo Saishu ,  Rei Hasegawa ,  Hajime Yamaguchi ,  Kohki Takatoh

IPC分类号： C09K1902

CPC分类号： G02F1/141 ,  G02F1/1337 ,  G02F1/1416 ,  G02F2001/133749

摘要： A liquid crystal display element including a first electrode substrate having a first transparent substrate, a first electrode formed on the first substrate, and a first alignment layer formed on the first substrate. The liquid crystal display element further includes a second electrode substrate having a second transparent substrate, a second electrode formed on the second substrate, and a second alignment layer formed on the second substrate. The liquid crystal display element also has a light modulating layer of a smectic liquid crystal material which is sandwiched between the first and second electrode substrates and which has a thresholdless voltage-transmittance characteristic and a spontaneous polarization of 120 nC/cm2 or less. Further, the polarity force component of the surface free energy of each of the first and second alignment layers is 13 dyn/cm or less.

摘要翻译： 一种液晶显示元件，包括具有第一透明基板的第一电极基板，形成在第一基板上的第一电极和形成在第一基板上的第一取向层。 液晶显示元件还包括具有第二透明基板的第二电极基板，形成在第二基板上的第二电极和形成在第二基板上的第二取向层。 液晶显示元件还具有被夹在第一和第二电极基板之间的层间液晶材料的光调制层，并且具有无阈值电压透射特性和120nC / cm 2以下的自发极化 。 此外，第一和第二取向层中的每一个的表面自由能的极性分力为13dyn / cm以下。

公开(公告)号：US06762812B2

公开(公告)日：2004-07-13

申请号：US10610535

申请日：2003-07-02

申请人： Rei Hasegawa ,  Rieko Fukushima ,  Tatsuo Saishu ,  Hajime Yamaguchi ,  Kohki Takatoh

发明人： Rei Hasegawa ,  Rieko Fukushima ,  Tatsuo Saishu ,  Hajime Yamaguchi ,  Kohki Takatoh

IPC分类号： G02F11337

CPC分类号： G02F1/141 ,  G02F1/133512

摘要： There is provided a liquid crystal display which is capable of preventing light from leaking out from the peripheral portion of pixels and which has a high display performance. The liquid crystal display comprises: an array substrate including a plurality of scanning lines and a plurality of signal lines, a plurality of switching elements, a plurality of pixel electrodes, and a first alignment layer which is formed on the first substrate so as to cover the pixel electrodes; a counter substrate including a counter electrode and a second alignment layer which is formed on the second substrate so as to cover the counter electrode; and a light control layer sandwiched between the array substrate and the counter substrate, and including a liquid crystal material having a spontaneous polarization and having a nematic phase or an isotropic phase on a high-temperature side of a chiral smectic C phase, an optical axis of liquid crystal molecules in the light control layer substantially staying when no electric field or a first electric field of a first polarity are applied to said liquid crystal material, and the optical axis of the liquid crystal molecules responding in accordance with a magnitude of a second electric field of a second polarity different from the first polarity when the second electric field is applied to said liquid crystal material, wherein an electric field between the scanning lines and the counter electrode has the first polarity when the switching elements turn on.

摘要翻译： 提供了一种液晶显示器，其能够防止光从像素的周边部分泄漏并具有高显示性能。 液晶显示器包括：阵列基板，包括多个扫描线和多个信号线，多个开关元件，多个像素电极和第一取向层，其形成在第一基板上以覆盖 像素电极; 对置基板，包括对电极和第二取向层，所述第二取向层形成在所述第二基板上以覆盖所述对电极; 以及夹在阵列基板和对置基板之间的光控层，并且在手性近晶C相的高温侧包括具有自发极化并具有向列相或各向同性相的液晶材料，光轴 当没有电场或第一极性的第一电场施加到所述液晶材料时，所述光控制层中的液晶分子基本上停留，并且所述液晶分子的光轴根据第二 当第二电场施加到所述液晶材料时，第二极性与第一极性不同的电场，其中当开关元件导通时，扫描线和对电极之间的电场具有第一极性。

公开(公告)号：US06344889B1

公开(公告)日：2002-02-05

申请号：US09527543

申请日：2000-03-16

申请人： Rei Hasegawa ,  Takeshi Yamaguchi ,  Rieko Fukushima ,  Hajime Yamaguchi ,  Kohki Takatoh

发明人： Rei Hasegawa ,  Takeshi Yamaguchi ,  Rieko Fukushima ,  Hajime Yamaguchi ,  Kohki Takatoh

IPC分类号： G02F11337

CPC分类号： G02F1/141 ,  G02F1/1416 ,  G02F2201/121 ,  G02F2201/124

摘要： In a liquid crystal display in which a liquid crystal having spontaneous polarization is sandwiched between substrates, liquid crystal alignment which achieves a wide viewing angle and hardly causes alignment destruction is readily formed. A common electrode is formed by a pair of meshed comb electrodes, and rubbing alignment is performed in the logitudinal direction of teeth of these comb electrodes. When the liquid crystal material transits from a nematic phase or an isotropic phase to a chiral smectic C phase, a positive DC voltage, for example, is applied between a pixel electrode and one of the comb common electrodes, and a negative voltage is applied between a pixel electrode and the other comb common electrode. This readily accomplishes liquid crystal alignment in which smectic layers bend horizontally with respect to the substrate surface in space portions between the interdigitated teeth of the comb electrodes.

摘要翻译： 在具有自发极化的液晶夹在基板之间的液晶显示器中，容易形成实现宽视角并且几乎不引起取向破坏的液晶取向。 公共电极由一对啮合的梳状电极形成，并且在这些梳状电极的齿的纵向上执行摩擦取向。 当液晶材料从向列相或各向同性相转移到手性近晶C相时，例如在像素电极和梳状公共电极之间施加正的直流电压，并且在两个梳状公共电极之间施加负电压 像素电极和另一个梳状共用电极。 这容易实现液晶对准，其中近晶层相对于梳电极的叉指齿之间的空间部分中的基板表面水平弯曲。

公开(公告)号：US06219019B1

公开(公告)日：2001-04-17

申请号：US08923585

申请日：1997-09-04

申请人： Rei Hasegawa ,  Tatsuo Saishu ,  Akira Kinno ,  Kohki Takatoh ,  Hiroyuki Nagata ,  Rieko Iida ,  Haruhiko Okumura ,  Hisao Fujiwara

发明人： Rei Hasegawa ,  Tatsuo Saishu ,  Akira Kinno ,  Kohki Takatoh ,  Hiroyuki Nagata ,  Rieko Iida ,  Haruhiko Okumura ,  Hisao Fujiwara

IPC分类号： G09G336

CPC分类号： G09G3/3614 ,  G09G3/3648 ,  G09G2310/06

摘要： In a method for driving a liquid crystal display apparatus which includes liquid crystal having spontaneous polarization disposed between a plurality of pixel electrodes arranged in a matrix form and a common electrode disposed to face the pixel electrodes, the method for driving the liquid crystal display apparatus includes a polarity inversion of periodically inverting polarities of at least one part of voltages applied between the plurality of pixel electrodes and the common electrode, and a write-in operation of applying the voltages to the pixel electrodes to hold display voltages, respectively, corresponding to the applied voltages on the pixel electrode, wherein the polarity inversion is effected to satisfy the expression of TS/TF≧2 when a frame period is set to TF and a period for effecting the polarity inversion is set to TS.

摘要翻译： 在液晶显示装置的驱动方法中，液晶显示装置的驱动方法包括以矩阵形状配置在多个像素电极之间的具有自发极化的液晶和配置为与像素电极相对配置的公共电极的液晶显示装置， 施加在所述多个像素电极和所述公共电极之间的至少一部分电压的周期性反转极性的极性反转，以及分别对所述像素电极施加电压以保持与所述公共电极对应的显示电压的写入操作 在像素电极上施加电压，其中当帧周期设置为TF并且用于进行极性反转的周期被设置为TS时，进行极性反转以满足TS / TF> = 2的表达式。

公开(公告)号：US5936686A

公开(公告)日：1999-08-10

申请号：US835020

申请日：1997-03-27

申请人： Haruhiko Okumura ,  Tatsuo Saishu ,  Kohki Takatoh ,  Hiroyuki Nagata ,  Kouhei Suzuki ,  Masahiko Akiyama

发明人： Haruhiko Okumura ,  Tatsuo Saishu ,  Kohki Takatoh ,  Hiroyuki Nagata ,  Kouhei Suzuki ,  Masahiko Akiyama

IPC分类号： G02F1/136 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/141 ,  G09F9/30 ,  G09G3/36

CPC分类号： G09G3/3651 ,  G02F1/136213 ,  G09G3/3648 ,  G02F1/141 ,  G02F2001/136245 ,  G09G2300/0809 ,  G09G2310/0251 ,  G09G2330/023 ,  G09G3/3614 ,  G09G3/3659

摘要： It is an object of this invention to provide an active matrix type liquid crystal display which uses a ferroelectric liquid crystal or antiferroelectric liquid crystal, which has a high response speed, a wide angle of field, and a high contrast, and which does not cause a "step response" phenomenon. An active matrix type liquid crystal display according to this invention includes pixel electrodes arranged in a matrix form, first switching devices arranged in a one-to-one correspondence with the pixel electrodes, signal lines for transmitting an image signal to the pixel electrodes via the first switching devices, scanning lines arranged to cross the signal lines to transmit a scanning signal for turning on the first switching devices, storage capacitance lines arranged parallel to the scanning lines to form storage capacitances between the storage capacitance lines and the pixel electrodes, and second switching devices arranged in a one-to-one correspondence with the pixel electrodes to connect pixel electrodes assigned to one scanning line to a storage capacitance line, while another scanning line is being selected, thereby resetting the pixel electrodes.

摘要翻译： 本发明的目的是提供一种有效矩阵型液晶显示器，其使用具有高响应速度，广角视场和高对比度的铁电液晶或反铁电液晶，并且不会引起 一个“阶梯反应”现象。 根据本发明的有源矩阵型液晶显示器包括以矩阵形式布置的像素电极，与像素电极一一对应地布置的第一开关器件，用于经由该像素电极将图像信号传输到像素电极的信号线 第一切换装置，布置成跨越信号线的扫描线，以传送用于接通第一开关装置的扫描信号，与扫描线平行布置的辅助电容线，以在存储电容线和像素电极之间形成存储电容，第二开关装置 开关元件与像素电极一一对应地配置，将分配给一条扫描线的像素电极连接到存储电容线，同时选择另一条扫描线，由此复位像素电极。

公开(公告)号：US07050031B2

公开(公告)日：2006-05-23

申请号：US10751505

申请日：2004-01-06

申请人： Tatsuo Saishu ,  Hajime Yamaguchi ,  Rieko Fukushima ,  Rei Hasegawa ,  Kohki Takatoh

发明人： Tatsuo Saishu ,  Hajime Yamaguchi ,  Rieko Fukushima ,  Rei Hasegawa ,  Kohki Takatoh

IPC分类号： G09G3/36

CPC分类号： G09G3/3651 ,  G09G3/3614 ,  G09G2310/06 ,  G09G2320/0257 ,  G09G2320/0261

摘要： A display includes a ferroelectric liquid crystal material having an asymmetric polarity response property, a section which applies an image signal to a pixel of the material for every two fields forming one frame, and a controller which reverses the polarity of the signal in one frame period. Particularly, the controller is configured that the polarity of the signal is reversed in a selected one of first and second manners, the first manner initiating a signal amplitude change from a polarity in which a larger response of the material is obtainable, the second manner initiating a signal amplitude change from a polarity in which a smaller response of the material is obtainable, and the selected manner being smaller in the total of brightness deviation generated in a frame immediately after the change for each of predetermined brightness transitions.