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: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。

    Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    3.
    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 composition, liquid crystal device and liquid crystal
apparatus
    5.
    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:US5744059A

    公开(公告)日:1998-04-28

    申请号:US592180

    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 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。

    Liquid crystal composition, liquid crystal device and liquid crystal
apparatus
    6.
    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:US5709819A

    公开(公告)日:1998-01-20

    申请号:US592576

    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 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。

    Liquid crystal device and liquid crystal display apparatus
    8.
    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:US06128064A

    公开(公告)日:2000-10-03

    申请号:US353154

    申请日:1999-07-14

    摘要: A liquid crystal device is constituted by a chiral smectic liquid crystal and a pair of substrates sandwiching the chiral smectic liquid crystal therebetween and each having thereon an electrode for applying a voltage to the liquid crystal. At least one of the substrates being provided with an alignment control film comprising a specific aromatic polyimide which has been subjected to a uniaxial aligning treatment. The chiral smectic liquid crystal assumes bistability in a chiral smectic temperature range when incorporated in a test cell which is not provided with an alignment control film and has been subjected to shearing treatment. In the liquid crystal device including the polyimide alignment control film, the chiral smectic liquid crystal at least has a voltage-transmittance characteristic such that an effective tilt angle and a transmittance continuously change depending on an electric field applied thereto.

    摘要翻译: 液晶装置由手性近晶液晶和夹在其间的手性近晶液晶的一对基板构成,并具有用于向液晶施加电压的电极。 至少一个基板设置有包含已经进行单轴对准处理的特定芳族聚酰亚胺的取向控制膜。 手性近晶液晶在手性近晶温度范围内呈现双重稳定性,当并入未设置取向控制膜并进行剪切处理的测试电池中时。 在包括聚酰亚胺取向控制膜的液晶装置中,手性近晶液晶至少具有电压 - 透射特性,使得有效倾斜角和透射率根据施加到其上的电场而不断变化。

    Liquid crystal composition, liquid crystal device, driving method thereof and liquid crystal apparatus
    9.
    发明授权
    Liquid crystal composition, liquid crystal device, driving method thereof and liquid crystal apparatus 有权
    液晶组合物,液晶装置,其驱动方法和液晶装置

    公开(公告)号:US06417828B1

    公开(公告)日:2002-07-09

    申请号:US09505838

    申请日:2000-02-17

    IPC分类号: G09G336

    摘要: An active matrix-type liquid crystal device is constituted by a pair of substrates, a chiral smectic liquid crystal composition disposed between the pair of substrates so as to form a plurality of pixels, and a plurality of active elements provided to the pixels, respectively, for driving the liquid crystal device in a matrix driving scheme. The chiral smectic liquid crystal composition may preferably comprise at least two specific fluorine-containing mesomorphic compounds and assume two stable states between which a threshold voltage for switching from one of the two stable states to the other stable state is different from a threshold voltage for switching from the other stable state to said one of the two stable states and liquid crystal molecules of the liquid crystal composition change their alignment states so as to provide a halftone state depending on a voltage applied to the chiral smectic liquid crystal.

    摘要翻译: 有源矩阵型液晶装置由一对基板构成,手性近晶液晶组合物设置在一对基板之间以形成多个像素,以及分别设置到像素的多个有源元件, 用于以矩阵驱动方案驱动液晶装置。 手性近晶液晶组合物可以优选包含至少两种特定的含氟介晶化合物,并且具有两种稳定状态,在两种稳定状态之间,用于从两种稳定状态中的一种转换到另一种稳定状态的阈值电压不同于用于切换的阈值电压 从另一个稳定状态到两个稳定状态之一和液晶组合物的液晶分子改变其取向状态,以便根据施加到手性近晶液晶的电压提供半色调状态。

    Aligning method of liquid crystal, process for producing liquid crystal
device, and liquid crystal device produced by the process
    10.
    发明授权
    Aligning method of liquid crystal, process for producing liquid crystal device, and liquid crystal device produced by the process 失效
    液晶的对准方法,液晶装置的制造方法以及通过该方法制造的液晶装置

    公开(公告)号:US6083574A

    公开(公告)日:2000-07-04

    申请号:US123330

    申请日:1998-07-28

    摘要: An aligning method of a chiral smectic liquid crystal includes the steps of: disposing a chiral smectic liquid crystal between a pair of electrode plates, the chiral smectic liquid crystal having a layer spacing-changing characteristic providing a layer spacing which increases on temperature decrease in a first temperature range in smectic A phase; and subjecting the chiral smectic liquid crystal to a heat treatment including a sequence of cooling from a higher temperature phase to a second temperature range in smectic A phase including at least a portion of the first temperature range, at least one cycle of heating and cooling within the second temperature range, and further cooling to a smectic phase lower than smectic phase. The heat treatment, particularly at least one cycle of heating and cooling in smectic A phase, is effective in suppressing an alignment (orientation) irregularity due to the presence of two regions different in characteristics, thus improving a drive margin.

    摘要翻译: 手性近晶液晶的取向方法包括以下步骤:在一对电极板之间设置手性近晶液晶,所述手性近晶液晶具有层间距变化特性,其提供在 近晶相A的第一温度范围; 以及对所述手性近晶液晶进行热处理,所述热处理包括在包括所述第一温度范围的至少一部分的近晶A相中的从较高温度相到第二温度范围的冷却序列,至少一个加热和冷却循环 第二温度范围,并进一步冷却至近晶相的近晶相。 热处理,特别是在近晶A相中的加热和冷却的至少一个循环,由于存在两个特性不同的区域,因此抑制了对准(取向)不规则性,从而提高了驱动裕度。