公开(公告)号：US5424004A

公开(公告)日：1995-06-13

申请号：US45312

申请日：1993-04-13

申请人： Kenji Shinjo ,  Hiroyuki Kitayama ,  Toshiharu Uchimi ,  Syuji Yamada ,  Kazuharu Katagiri

发明人： Kenji Shinjo ,  Hiroyuki Kitayama ,  Toshiharu Uchimi ,  Syuji Yamada ,  Kazuharu Katagiri

IPC分类号： G02F1/13 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46

CPC分类号： C09K19/3469 ,  C09K19/46

摘要： A chiral smectic liquid crystal composition is formed by including at least one species of a mesomorphic compound represented by the following formula (I): ##STR1## wherein X denotes F, Cl, Br, CF.sub.3, NO.sub.2 or CN; Y denotes a single bond, ##STR2## --CH.sub.2 O-- or --OCH.sub.2 --; and R denotes a linear or branched alkyl group having 1-20 carbon atoms optionally substituted. The composition shows improved switching characteristics and, when used in combination with an alignment film providing a high pre-tilt angle, provides an increased contrast at a large drive margin and with little tendency of monostabilization of a memory state.

摘要翻译： 通过包含至少一种由下式（I）表示的介晶化合物形成手性近晶液晶组合物：其中X表示F，Cl，Br，CF 3，NO 2或CN; Y表示单键，图示-CH 2 O-或-OCH 2 - ; 并且R表示任选取代的具有1-20个碳原子的直链或支链烷基。 该组合物显示改进的开关特性，并且当与提供高预倾角的取向膜组合使用时，在大的驱动裕度提供增加的对比度并且几乎没有记忆状态的单稳态化趋势。

公开(公告)号：US5453861A

公开(公告)日：1995-09-26

申请号：US252535

申请日：1994-06-01

申请人： Kenji Shinjo ,  Hiroyuki Kitayama ,  Masanobu Asaoka ,  Masahiro Terada ,  Syuji Yamada ,  Hiroshi Mizuno

发明人： Kenji Shinjo ,  Hiroyuki Kitayama ,  Masanobu Asaoka ,  Masahiro Terada ,  Syuji Yamada ,  Hiroshi Mizuno

IPC分类号： G02F1/1337 ,  G02F1/141 ,  G02F1/13 ,  G02F1/1343

CPC分类号： G02F1/1416 ,  G02F2001/133746

摘要： A liquid crystal device showing improved uniform alignment characteristic and switching characteristic is constituted by a pair of an upper substrate and a lower substrate, and a chiral smectic liquid crystal disposed between the upper and lower substrates. Each of the upper and lower substrates has thereon an electrode for applying a voltage to the liquid crystal and a uniaxial alignment film. The alignment films on the upper and lower substrates are provided with uniaxial alignment axes which cross each other so that the direction of crossing of the uniaxial alignment axes from the lower substrate to the upper substrate is identical to the direction of helical twist in cholesteric phase of the chiral smectic liquid crystal, and the chiral smectic liquid crystal is disposed in such an alignment state that the liquid crystal shows a pretilt angle .alpha., a cone angle H, an inclination angle .delta. of SmC.sup.* layer, and an apparent tilt angle .theta.a satisfying relationships of: H .theta.a>H/2. The crossing direction may preferably have a polarity (taken as "positive" in clockwise direction and "negative" in anticlockwise direction) which is the same as the polarity of the spontaneous polarization of the liquid crystal.

摘要翻译： 显示出改善的均匀取向特性和切换特性的液晶装置由一对上基板和下基板以及设置在上基板和下基板之间的手性近晶液晶构成。 上基板和下基板都具有用于向液晶施加电压的电极和单轴取向膜。 上基板和下基板上的取向膜具有彼此交叉的单轴对准轴，使得单轴对准轴从下基板到上基板的交叉方向与胆甾醇相的螺旋扭转方向相同 手性近晶液晶和手性近晶液晶以这样的取向状态设置，使得液晶显示预倾角α，锥角+ E，crc / H /，SmC *层的倾斜角度δ，以及 满足以下关系的明显倾斜角θa：+ E，crc / H /α+δ和+ E，crc / H />θa> + E，crc / H / / 2。 交叉方向可以优选地具有与液晶的自发极化的极性相同的极性（顺时针方向为“正”，逆时针方向为“负”）。

公开(公告)号：US5583682A

公开(公告)日：1996-12-10

申请号：US253160

申请日：1994-06-02

申请人： Hiroyuki Kitayama ,  Kenji Shinjo ,  Syuji Yamada

发明人： Hiroyuki Kitayama ,  Kenji Shinjo ,  Syuji Yamada

IPC分类号： G02F1/1337 ,  C09K19/02 ,  C09K19/34 ,  G02F1/141

CPC分类号： C09K19/34 ,  C09K19/0225 ,  G02F1/1416 ,  G02F2203/30

摘要： A liquid crystal device for gradational display, comprising: a pair of substrates each provided with an electrode, and a liquid crystal layer comprising a chiral smectic liquid crystal disposed between the substrates; the pair of substrates each having thereon alignment control layer provided with a uniaxial alignment axis, wherein aid liquid crystal layer comprises a striped region and a non-striped region where (1) the striped region and the non-striped region each assume a homogeneous alignment state, (2) the striped region extends in a direction perpendicular to the direction of the uniaxial alignment axis, and (3) each of liquid crystal molecules within the striped region and the non-striped region show bistability; and the liquid crystal molecules within the striped region have a threshold voltage, for switching between two stable states, different from that given by the liquid crystal molecules within the on-striped region. The above two regions (striped and non-striped region) having different threshold voltages each other are suitable as a display region for a liquid crystal device providing good gradation characteristic.

摘要翻译： 一种用于梯度显示的液晶显示装置，包括：一对基板，每个基板均设置有电极;以及液晶层，其包括设置在所述基板之间的手性近晶液晶; 所述一对基板各自具有设置有单轴取向轴的取向控制层，其中辅助液晶层包括条纹区域和非条带区域，其中（1）所述条纹区域和所述非条纹区域各自呈均匀对准 状态，（2）条纹区域沿垂直于单轴取向轴线方向的方向延伸，（3）条纹区域和非条纹区域中的每个液晶分子显示双稳态; 并且条纹区域内的液晶分子具有阈值电压，用于在两个稳定状态之间切换，不同于在条纹区域内的液晶分子给出的稳定状态。 具有不同阈值电压的上述两个区域（条纹和非条纹区域）适合作为提供良好灰度特性的液晶装置的显示区域。

公开(公告)号：US5305131A

公开(公告)日：1994-04-19

申请号：US979812

申请日：1992-11-20

申请人： Masahiro Terada ,  Masataka Yamashita ,  Kazuharu Katagiri ,  Akio Yoshida ,  Shosei Mori ,  Syuji Yamada

发明人： Masahiro Terada ,  Masataka Yamashita ,  Kazuharu Katagiri ,  Akio Yoshida ,  Shosei Mori ,  Syuji Yamada

IPC分类号： C09K19/02 ,  C09K19/42 ,  C09K19/46 ,  G02F1/141 ,  G02F1/133

CPC分类号： G02F1/1416 ,  C09K19/0225 ,  C09K19/42 ,  C09K19/46

摘要： A liquid crystal device with a decreased temperature-dependence of response speed is obtained by using a liquid crystal composition having a temperature range where the composition assumes chiral smectic C phase. The temperature range of chiral smectic C phase includes a) a first temperature range where the liquid crystal composition shows a cone angle in chiral smectic C phase which increases on temperature decrease down to a mediate temperature, and b) a second temperature range, below the first temperature range, where the liquid crystal composition shows a cone angle in chiral smectic C phase which decreases on further temperature decrease below the mediate temperature.

摘要翻译： 通过使用具有组成为手性近晶C相的温度范围的液晶组合物，获得响应速度的温度依赖性降低的液晶装置。 手性近晶C相的温度范围包括a）第一温度范围，其中液晶组合物在手性近晶C相中显示锥角，其温度降低至中间温度时升高，以及b）第二温度范围，低于 第一温度范围，其中液晶组合物在手性近晶C相中显示锥角，其在进一步的温度降低到低于介质温度时降低。

公开(公告)号：US5728318A

公开(公告)日：1998-03-17

申请号：US555063

申请日：1995-11-08

申请人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Hiroshi Mizuno

发明人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Hiroshi Mizuno

IPC分类号： C09K19/34 ,  C09K19/46 ,  C09K19/12 ,  C09K19/32 ,  G02F1/133

CPC分类号： C09K19/46 ,  C09K19/34

摘要： A liquid crystal composition is composed of at least three types of mesomorphic compounds. The liquid crystal composition may preferably contain a mesomorphic compound having an indan skeleton represented by the formula (1) or (3) and a mesomorphic compound having a terminal cyclic group represented by the formula (2) or (4). The liquid crystal composition may also preferably further contain an optically active compound to be formulated as a chiral smectic (or ferroelectric) liquid crystal composition. When the chiral smectic liquid crystal composition is disposed between a pair of electrode substrates provided with uniaxial alignment axes, the liquid crystal composition may preferably be placed in an alignment state in C1 uniform alignment, so that a resultant liquid crystal device provides a higher contrast ratio and a wider drive voltage margin.

摘要翻译： 液晶组合物由至少三种类型的介晶化合物组成。 液晶组合物可以优选含有具有由式（1）或（3）表示的茚满骨架的介晶化合物和具有由式（2）或（4）表示的末端环状基团的介晶化合物。 液晶组合物还优选还含有配制成手性近晶（或铁电体）液晶组合物的光学活性化合物。 当手性近晶液晶组合物配置在具有单轴取向轴的一对电极基板之间时，液晶组合物优选地可以以C1均匀取向放置在取向状态，使得所得到的液晶装置提供更高的对比度 和更宽的驱动电压裕度。

公开(公告)号：US5785890A

公开(公告)日：1998-07-28

申请号：US729575

申请日：1996-10-11

申请人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Hiroshi Mizuno ,  Ikuo Nakazawa ,  Koji Noguchi

发明人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Hiroshi Mizuno ,  Ikuo Nakazawa ,  Koji Noguchi

IPC分类号： C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  C09K19/32

CPC分类号： C09K19/34 ,  C09K19/42 ,  C09K19/46

摘要： A liquid crystal composition comprises at least three compounds represented by formulae (A), (B) and (C), respectively as in Claim 1. The compound of the formula (A) has an indan skeleton, the compound of the formula (B) has a quinoxaline skeleton, and the compound of the formula (C) has a pyrimidine skeleton or a benzothiazole skeleton and a terminal cyclic group comprising a cyclohexyl group or a phenyl group. The liquid crystal composition is effective in improving a display quality and drive characteristics of a liquid crystal device using the composition when the liquid crystal device is continuously driven for a long time.

摘要翻译： 液晶组合物分别包含如权利要求1所述的至少三种由式（A），（B）和（C）表示的化合物。式（A）化合物具有茚满骨架，式（B ）具有喹喔啉骨架，式（C）的化合物具有嘧啶骨架或苯并噻唑骨架和包含环己基或苯基的末端环状基团。 当长时间连续驱动液晶装置时，液晶组合物可有效地提高使用该组合物的液晶装置的显示质量和驱动特性。

公开(公告)号：US5744059A

公开(公告)日：1998-04-28

申请号：US592180

申请日：1996-01-26

申请人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Koji Noguchi

发明人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Koji Noguchi

IPC分类号： G02F1/13 ,  C09K19/02 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  C09K19/46 ,  C09K19/30 ,  C09K19/32

CPC分类号： C09K19/46 ,  C09K19/34 ,  Y10T428/10 ,  Y10T428/1005

摘要： A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 denotes a single bond, --O--, --CO--O-- or --O--CO--; X.sub.2 denotes a single bond, --OCH.sub.2 --, --CO--O-- or --O--CO--; n is an integer of 3-16; and A.sub.1, denotes ##STR2## and a mesomorphic compound represented by the following formula (B): ##STR3## wherein R.sub.2 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.3 and X.sub.4 independently denote a single bond, --O--, --CO--O-- or --O--CO--; m is an integer of 3-16; and A.sub.2 denotes ##STR4## The liquid crystal composition may preferably be formulated as a chiral smectic liquid crystal composition. The liquid crystal composition is useful in providing a liquid crystal device using the liquid crystal composition with a good alignment characteristic, a good drive characteristic, and a high contrast ratio.

摘要翻译： 液晶组合物含有由下式（A）表示的介晶化合物：其中R 1表示具有1-18个碳原子的直链或支链烷基; X1表示单键，-O - ， - CO-O-或-O-CO-; X2表示单键，-OCH2-，-CO-O-或-O-CO-; n为3-16的整数; （B）表示的介晶化合物：其中，R 2表示具有1-18个碳原子的直链或支链烷基; X3和X4独立地表示单键，-O - ， - CO-O-或-O-CO-; m为3-16的整数; 并且A2表示作为手性近晶液晶组合物配制的 e。 液晶组合物可用于提供使用具有良好的取向特性，良好的驱动特性和高对比度的液晶组合物的液晶装置。

公开(公告)号：US5709819A

公开(公告)日：1998-01-20

申请号：US592576

申请日：1996-01-26

申请人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Koji Noguchi

发明人： Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Shosei Mori ,  Syuji Yamada ,  Koji Noguchi

IPC分类号： G02F1/13 ,  C09K19/02 ,  C09K19/34 ,  C09K19/42 ,  C09K19/44 ,  C09K19/46 ,  C09K19/30 ,  C09K19/32

CPC分类号： C09K19/46 ,  C09K19/34

摘要： A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 denotes a single bond, --O--, --CO--O-- or --O--CO--; X.sub.2 denotes a single bond, --OCH.sub.2 --, --CO--O-- or --O--CO--; n is an integer of 3-16; and A.sub.1 denotes ##STR2## and a mesomorphic compound represented by the following formula (B): ##STR3## wherein R.sub.2 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.3 and X.sub.4 independently denote a single bond, --O--, --CO--O-- or --O--CO--; m is an integer of 3-16; and A.sub.2 denotes ##STR4## The liquid crystal composition may preferably be formulated as a chiral smectic liquid crystal composition. The liquid crystal composition is useful in providing a liquid crystal device using the liquid crystal composition with a good alignment characteristic, a good drive characteristic, and a high contrast ratio.

摘要翻译： 液晶组合物含有由下式（A）表示的介晶化合物：其中R 1表示具有1-18个碳原子的直链或支链烷基; X1表示单键，-O - ， - CO-O-或-O-CO-; X2表示单键，-OCH2-，-CO-O-或-O-CO-; n为3-16的整数; 和A1表示下式（B）表示的介晶化合物：其中R 2表示具有1-18个碳原子的直链或支链烷基; X3和X4独立地表示单键，-O - ， - CO-O-或-O-CO-; m为3-16的整数; 并且A2表示作为手性近晶液晶组合物配制的 e。 液晶组合物可用于提供使用具有良好的取向特性，良好的驱动特性和高对比度的液晶组合物的液晶装置。

公开(公告)号：US5629788A

公开(公告)日：1997-05-13

申请号：US174440

申请日：1993-12-28

申请人： Shosei Mori ,  Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Syuji Yamada ,  Hiroshi Mizuno

发明人： Shosei Mori ,  Masataka Yamashita ,  Kazuharu Katagiri ,  Masahiro Terada ,  Syuji Yamada ,  Hiroshi Mizuno

IPC分类号： G02F1/141 ,  G02F1/13

CPC分类号： G02F1/141

摘要： A liquid crystal device including: a pair of substrates and a chiral smectic liquid crystal disposed between the pair of substrates. Each of the pair of substrates has an electrode for applying a voltage to the liquid crystal. The pair of substrates is provided with respective uniaxial alignment axes extending in directions which are parallel to each other or intersect each other at a prescribed angle. The chiral smectic liquid crystal is placed in such an alignment state that the liquid crystal assumes at least two stable states and provides a pretilt angle .alpha. (degrees), a tilt angle H (degrees), an inclination angle .delta. (degrees) of the liquid crystal layer, and an apparent tilt angle .theta.a satisfying the following relationships (I) and (II) in a temperature range of 10.degree.-55.degree. C.:H .theta.a>H/2 (II).The liquid crystal provides a tilt angle H (degrees), an inclination angle .delta. (degrees) of the liquid crystal layer, and a spontaneous polarization Ps (nC/cm.sup.2) satisfying the following relationships (III) and (IV) at 55.degree. C.:H.times..delta.>70 (III), andH.times..delta./Ps>20 (IV).

摘要翻译： 一种液晶装置，包括：一对基板和设置在所述一对基板之间的手性近晶液晶。 一对基板中的每一个具有用于向液晶施加电压的电极。 一对基板设置有相互平行的方向上延伸的相应的单轴对准轴线或以规定的角度彼此相交。 手性近晶液晶被置于液晶呈现至少两个稳定状态的对准状态，并提供预倾角α（度），倾角+ E，crc H + EE（度），倾斜角度 （度）和在10 -5℃的温度范围内满足以下关系式（I）和（II）的表观倾斜角θa：+ E，crc H +EEα+ δ和δ<α（I），+ E，crc H + EE> theta> + E，crc H + EE / 2（II）。 液晶提供倾斜角+ E，crc H + EE（度），液晶层的倾斜角度（度）和满足以下关系式（III）和（III）的自发极化Ps（nC / cm 2） IV）在55℃：+ E，crc H + EE×δ> 70（III）和+ E，crc H + EE×δ/ Ps> 20（IV）。

公开(公告)号：US5858269A

公开(公告)日：1999-01-12

申请号：US715632

申请日：1996-09-18

申请人： Kenji Shinjo ,  Koichi Sato ,  Masahiro Terada ,  Syuji Yamada

发明人： Kenji Shinjo ,  Koichi Sato ,  Masahiro Terada ,  Syuji Yamada

IPC分类号： C09K19/04 ,  C09K19/58 ,  G02F1/1337 ,  C09K19/52 ,  G02F1/1333

CPC分类号： G02F1/133711 ,  C09K19/04 ,  C09K19/582 ,  Y10T428/1027

摘要： A liquid crystal device is constituted by a pair of substrates each having thereon at least an electrode and an alignment control layer, and a liquid crystal composition disposed between the substrates. At least one of the alignment control layers has a thickness of at most 200 .ANG. or comprises polyimide. In the latter case, the pair of substrates have been subjected to mutually different aligning treatments. The liquid crystal composition comprises at least one species of a fluorine-containing mesomorphic compound in an amount of at least 70 wt. % comprising a fluorocarbon terminal portion and a hydrocarbon terminal portion, the terminal portions being connected with a central core, and having smectic mesophase or latent smectic mesophase, and comprises at least one species of a resistivity-modifying substance. The fluorine-containing mesomorphic compound comprises a compound having a fluorocarbon terminal portion containing at least one catenary ether oxygen atom in an amount of at least 30 wt. % based on the liquid crystal composition. The liquid crystal device is effective in improving switching characteristics, an alignment characteristic and display performances while retaining a bookshelf structure or a near bookshelf structure with respect to a smectic layer structure.

摘要翻译： 液晶装置由一对基板构成，每个基板至少具有电极和取向控制层，以及设置在基板之间的液晶组合物。 至少一个取向控制层的厚度至多为200或包含聚酰亚胺。 在后一种情况下，这对基板已进行相互不同的取向处理。 液晶组合物包含至少一种含氟介晶化合物，其含量至少为70wt。 ％，其包含碳氟化合物末端部分和烃末端部分，末端部分与中心核心连接，并且具有近晶中间相或潜在的近晶中间相，并且包含至少一种电阻率修饰物质。 含氟介晶化合物包含含有至少一个链烯氧原子的碳氟化合物末端部分的化合物，其量至少为30重量％。 基于液晶组成。 液晶装置在保持相对于层间结构的书架结构或靠近书架结构的同时有效地改善开关特性，对准特性和显示性能。