Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    1.
    发明授权
    Liquid crystal composition, liquid crystal device and liquid crystal apparatus 失效
    液晶组合物,液晶装置和液晶装置

    公开(公告)号:US5458804A

    公开(公告)日:1995-10-17

    申请号:US65917

    申请日:1993-05-25

    摘要: A liquid crystal (composition) containing a ferroelectric liquid crystal shows a layer inclination angle .delta. in smectic phase providing a specific temperature dependence. The inclination angle .delta. increases on temperature decrease down to a mediate temperature and decreases on temperature decrease below the mediate temperature. The inclination angle .delta. keeps a positive value in an ambient temperature or starts to increase again on further temperature decrease before it reaches zero degrees. The liquid crystal (composition) is usable for providing a liquid crystal device or apparatus with decreased temperature dependences of driving conditions and improved low-temperature storage properties.

    摘要翻译: 含有铁电液晶的液晶(组合物)表现出具有特定温度依赖性的近晶相中的层倾斜角度δ。 倾斜角度δ随着温度的降低而增加到中间温度,并且在低于介质温度的温度下降时减小。 倾斜角度Δ在环境温度下保持正值,或者在其达到零度之前,在另外的温度降低时再次开始增加。 液晶(组合物)可用于提供具有降低的驱动条件的温度依赖性和改善的低温存储性能的液晶装置或装置。

    Chiral smectic liquid crystal device and display apparatus
    2.
    发明授权
    Chiral smectic liquid crystal device and display apparatus 失效
    手性近晶体液晶装置及显示装置

    公开(公告)号:US5453861A

    公开(公告)日:1995-09-26

    申请号:US252535

    申请日:1994-06-01

    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”)。

    Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    4.
    发明授权
    Liquid crystal composition, liquid crystal device and liquid crystal apparatus 失效
    液晶组合物,液晶装置和液晶装置

    公开(公告)号:US5710433A

    公开(公告)日:1998-01-20

    申请号:US592573

    申请日:1996-01-26

    摘要: A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): ##STR1## wherein R.sub.1 and R.sub.2 independently denote a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 and X.sub.2 independently denote a single bond, --O--, --CO--O-- or --O--CO--; and A.sub.1 denotes a single bond, ##STR2## or ##STR3## and A.sub.2 denotes ##STR4## or ##STR5## and a mesomorphic compound represented by the following formula (B): ##STR6## wherein R.sub.3 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.3 denotes ##STR7## or ##STR8## 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 and stable 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和R 2分别表示具有1-18个碳原子的直链或支链烷基; X1和X2独立地表示单键,-O - , - CO-O-或-O-CO-; 并且A1表示单键,,A2表示,以及由下式(B)表示的介晶化合物:其中R 3表示直链或支链 具有1-18个碳原子的烷基; 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A3表示。液晶组合物优选配制成手性近晶液晶组合物。 液晶组合物可用于提供使用具有良好取向特性,良好的驱动特性和高且稳定的对比度的液晶组合物的液晶装置。

    Liquid crystal device and liquid crystal display apparatus
    5.
    发明授权
    Liquid crystal device and liquid crystal display apparatus 失效
    液晶显示装置及液晶显示装置

    公开(公告)号:US5460749A

    公开(公告)日:1995-10-24

    申请号:US172164

    申请日:1993-12-23

    IPC分类号: C09K19/34 G02F1/141 G02F1/13

    摘要: A liquid crystal device is constituted by disposing a chiral smectic liquid crystal between a pair of substrates each provided with an electrode and a uniaxial alignment film. The chiral smectic liquid crystal is placed in such a quasi-smectic A alignment state that the liquid crystal molecules will have a single average molecular axis under no electric field application on a lower temperature side within chiral smectic C phase range, wherein the single average molecular axis can be confirmed as a position providing the darkest state when observed through cross nicol polarizers. Such a quasi-smectic A alignment state is effective in providing a liquid crystal device (or display apparatus) having an improved shock resistance and a good low-temperature storage properties.

    摘要翻译: 液晶装置是通过在各自设置有电极的一对基板和单轴取向膜之间设置手性近晶液晶而构成的。 手性近晶液晶被置于这样的准近晶A取向状态,使得液晶分子在手性近晶C相范围内的低温侧无电场施加时将具有单个平均分子轴,其中单分子平均分子 当通过交叉尼龙偏振器观察时,可以将轴确认为提供最黑暗状态的位置。 这样的准近程A取向状态在提供具有改善的抗冲击性和良好的低温储存性的液晶装置(或显示装置)方面是有效的。

    Liquid crystal device
    6.
    发明授权
    Liquid crystal device 失效
    液晶装置

    公开(公告)号:US5657141A

    公开(公告)日:1997-08-12

    申请号:US475533

    申请日:1995-06-07

    摘要: A liquid crystal device is constituted by disposing a chiral smectic liquid crystal between a pair of substrates each provided with an electrode and a uniaxial alignment film. The chiral smectic liquid crystal is placed in such a quasi-smectic A alignment state that the liquid crystal molecules will have a single average molecular axis under no electric field application on a lower temperature side within chiral smectic C phase range, wherein the single average molecular axis can be confirmed as a position providing the darkest state when observed through cross nicol polarizers. Such a quasi-smectic A alignment state is effective in providing a liquid crystal device (or display apparatus) having an improved shock resistance and a good low-temperature storage properties.

    摘要翻译: 液晶装置是通过在各自设置有电极的一对基板和单轴取向膜之间设置手性近晶液晶而构成的。 手性近晶液晶被置于这样的准近晶A取向状态,使得液晶分子在手性近晶C相范围内的低温侧无电场施加时将具有单个平均分子轴,其中单分子平均分子 当通过交叉尼龙偏振器观察时,可以将轴确认为提供最黑暗状态的位置。 这样的准近程A取向状态在提供具有改善的抗冲击性和良好的低温储存性的液晶装置(或显示装置)方面是有效的。

    Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    7.
    发明授权
    Liquid crystal composition, liquid crystal device and liquid crystal apparatus 失效
    液晶组合物,液晶装置和液晶装置

    公开(公告)号:US5733475A

    公开(公告)日:1998-03-31

    申请号:US592176

    申请日:1996-01-26

    CPC分类号: C09K19/34 C09K19/46

    摘要: A liquid crystal composition contains a mesomorphic compound represented by the following formula (A): ##STR1## wherein R.sub.1 and R.sub.2 independently denote a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 denotes a single bond, --O--, --CO--O-- or --O--CO--; and A.sub.1 denotes ##STR2## and a mesomorphic compound represented by the following formula (B): ##STR3## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.2 denotes a single bond, --O--, --CO--O-- or --O--CO--; X.sub.3 denotes a single bond, --OCH.sub.2 --, --CO--O-- or --O--CO--; n 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和R 2分别表示具有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-; A1表示下式(B)表示的介晶化合物:(B)其中,R3表示碳原子数为1〜18的直链或支链烷基; X2表示单键,-O - , - CO-O-或-O-CO-; X3表示单键,-OCH2-,-CO-O-或-O-CO-; n为3-16的整数; 并且A2表示E>液晶组合物优选配制为手性近晶液晶组合物。 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。

    Liquid crystal device providing tilt angle inclination angle and ps
satisfying relationships at 55 degrees
    8.
    发明授权
    Liquid crystal device providing tilt angle inclination angle and ps satisfying relationships at 55 degrees 失效
    提供倾斜角度倾斜角度的液晶装置和满足55度关系的ps

    公开(公告)号:US5629788A

    公开(公告)日:1997-05-13

    申请号:US174440

    申请日:1993-12-28

    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)。

    Liquid crystal composition, liquid crystal device and liquid crystal
display apparatus
    9.
    发明授权
    Liquid crystal composition, liquid crystal device and liquid crystal display apparatus 失效
    液晶组合物,液晶装置和液晶显示装置

    公开(公告)号:US5728318A

    公开(公告)日:1998-03-17

    申请号:US555063

    申请日:1995-11-08

    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。

    Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    10.
    发明授权
    Liquid crystal composition, liquid crystal device and liquid crystal apparatus 失效
    液晶组合物,液晶装置和液晶装置

    公开(公告)号:US5709818A

    公开(公告)日:1998-01-20

    申请号:US592159

    申请日:1996-01-26

    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 and R.sub.2 independently denote a linear or branched alkyl group having 1-18 carbon atoms; X.sub.1 denotes a single bond, --O--, --CO--O-- or --O--CO--; and A.sub.1 denotes ##STR2## and a mesomorphic compound represented by the following formula (B): ##STR3## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms; X.sub.2 and X.sub.3 independently denote a single bond, --O--, --CO--O-- or --O--CO--; m is an integer of 3-16; and A.sub.2 denotes ##STR4## or ##STR5## 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 and stable 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和R 2分别表示具有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-; A1表示下式(B)表示的介晶化合物:(B)其中,R3表示碳原子数为1〜18的直链或支链烷基; X2和X3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。液晶组合物优选配制成手性近晶液晶组合物。 液晶组合物可用于提供使用具有良好取向特性,良好的驱动特性和高且稳定的对比度的液晶组合物的液晶装置。