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: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
    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: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
    7.
    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。