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    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds
    1.
    发明授权
    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds 失效
    控制锥形液晶化合物混合物锥角倾斜角的过程

    公开(公告)号：US5658491A

    公开(公告)日：1997-08-19

    申请号：US542179

    申请日：1995-10-12

    申请人： John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    发明人： John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    IPC分类号： G02F1/13 ,  C07D239/26 ,  C07D239/34 ,  C09K19/04 ,  C09K19/34 ,  C09K19/06 ,  C09K19/12 ,  C09K19/32

    CPC分类号： C07D239/26 ,  C09K19/04 ,  C09K19/3458 ,  C09K19/3469

    摘要： A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (i) an aliphatic fluorocarbon terminal portion comprising a terminal fluoroalkyl or fluoroether group and an alkylene group having at least two carbon atoms and containing at least one catenary ether oxygen atom, (ii) an aliphatic hydrocarbon terminal portion, and (iii) a central core connecting the terminal portions; and (b) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound; with the provisos that at least one of the compositions (a) and (b) comprises at least one chiral liquid crystal compound and that the combining of compositions (a) and (b) provides an optically active, tilted chiral smectic liquid crystal composition. The process enables control of cone tilt angle and thereby control of the brightness characteristics of liquid crystal display devices.

    摘要翻译： 用于控制倾斜的近晶液晶组合物的锥体倾斜角的方法包括将（a）至少一种液晶组合物组合的步骤，所述液晶组合物包含至少一种近晶或潜暗的近晶液晶化合物，所述液晶组合物包含（i）脂族碳氟化合物末端部分， 末端氟代烷基或氟代醚基和具有至少两个碳原子并含有至少一个链烯氧原子的亚烷基，（ii）脂肪族烃末端部分和（iii）连接末端部分的中心核心; 和（b）至少一种液晶组合物，其包含至少一种近晶或潜层间的近晶液晶化合物; 条件是组合物（a）和（b）中的至少一种包含至少一种手性液晶化合物，并且组合物（a）和（b）的组合提供光学活性的倾斜手性近晶液晶组合物。 该过程能够控制锥形倾斜角度，从而控制液晶显示装置的亮度特性。

    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds
    2.
    发明授权
    Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds 失效
    控制锥形液晶化合物混合物锥角倾斜角的过程

    公开(公告)号：US5928562A

    公开(公告)日：1999-07-27

    申请号：US827287

    申请日：1997-03-27

    申请人： John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    发明人： John F. Kistner ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    IPC分类号： G02F1/13 ,  C07D239/26 ,  C07D239/34 ,  C09K19/04 ,  C09K19/34 ,  C09K19/06 ,  C07C22/00 ,  C09K19/30

    CPC分类号： C07D239/26 ,  C09K19/04 ,  C09K19/3458 ,  C09K19/3469

    摘要： A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (i) an aliphatic fluorocarbon terminal portion comprising a terminal fluoroalkyl or fluoroether group and an alkylene group having at least two carbon atoms and containing at least one catenary ether oxygen atom, (ii) an aliphatic hydrocarbon terminal portion, and (iii) a central core connecting the terminal portions; and (b) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound; with the provisos that at least one of the compositions (a) and (b) comprises at least one chiral liquid crystal compound and that the combining of compositions (a) and (b) provides an optically active, tilted chiral smectic liquid crystal composition. The process enables control of cone tilt angle and thereby control of the brightness characteristics of liquid crystal display devices.

    摘要翻译： 用于控制倾斜的近晶液晶组合物的锥体倾斜角的方法包括将（a）至少一种液晶组合物组合的步骤，所述液晶组合物包含至少一种近晶或潜暗的近晶液晶化合物，所述液晶组合物包含（i）脂族碳氟化合物末端部分， 末端氟代烷基或氟代醚基和具有至少两个碳原子并含有至少一个链烯氧原子的亚烷基，（ii）脂肪族烃末端部分和（iii）连接末端部分的中心核心; 和（b）至少一种液晶组合物，其包含至少一种近晶或潜层间的近晶液晶化合物; 条件是组合物（a）和（b）中的至少一种包含至少一种手性液晶化合物，并且组合物（a）和（b）的组合提供光学活性的倾斜手性近晶液晶组合物。 该过程能够控制锥形倾斜角度，从而控制液晶显示装置的亮度特性。

    Tristable liquid crystal display device
    3.
    发明授权
    Tristable liquid crystal display device 失效
    三态液晶显示装置

    公开(公告)号：US6084649A

    公开(公告)日：2000-07-04

    申请号：US131585

    申请日：1998-08-10

    申请人： Takashi Amano ,  Michael P. Keyes ,  Steven J. Martin ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    发明人： Takashi Amano ,  Michael P. Keyes ,  Steven J. Martin ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    IPC分类号： G02F1/141 ,  C09K19/02 ,  C09K19/10 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/42 ,  G02F1/13 ,  G02F1/1335 ,  C09K19/52 ,  G02F1/1337

    CPC分类号： C09K19/3463 ,  C09K19/02 ,  C09K19/3441 ,  C09K19/3469

    摘要： A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one or a plurality of pixels; (b) a tilted smectic or induced tilted smectic liquid crystal composition disposed between the substrates; and (c) a pair of orthogonally disposed polarizers, each having a polarization axis, one polarization axis being aligned with the zero field optical axis of a tilted smectic or induced tilted smectic mesophase of the liquid crystal composition; wherein the substrates are disposed so as to provide an alignment of the liquid crystal composition, which comprises (i) at least one chiral liquid crystal compound; and (ii) at least one achiral liquid crystal compound that can be represented by the following formula:R--M--N--(P).sub.a --OCH.sub.2 R.sub.f (I)where R, M, N, P, a and R.sub.f are describe herein; wherein the liquid crystal composition exhibits tristable switching.

    摘要翻译： 三重液晶显示装置包括（a）第一和第二相对的基板，至少一个轴承对准涂层，并且每个轴承至少一个电极以限定一个或多个像素; （b）设置在基板之间的倾斜的近晶或诱导倾斜的近晶液晶组合物; 和（c）一对正交设置的偏振器，每个具有偏振轴，一个偏振轴与液晶组合物的倾斜的近晶或诱导的倾斜的近晶中间相的零场光轴对齐; 其中所述基板被设置成提供所述液晶组合物的对准，所述液晶组合物包含（i）至少一种手性液晶化合物; R-M-N-（P）a-OCH 2 R f（I）表示的至少一种非手性液晶化合物，其中R，M，N，P，a和Rf如下所述; 其中液晶组合物显示三重切换。

    Liquid crystal compounds having a chiral fluorinated terminal portion
    4.
    发明授权
    Liquid crystal compounds having a chiral fluorinated terminal portion 失效

    公开(公告)号：US6030547A

    公开(公告)日：2000-02-29

    申请号：US998400

    申请日：1997-12-24

    申请人： Masakazu Hasegawa ,  Michael P. Keyes ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad ,  Terence D. Spawn

    发明人： Masakazu Hasegawa ,  Michael P. Keyes ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad ,  Terence D. Spawn

    摘要： Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion comprising (i) at least one chiral center, which can optionally be heteroatom-substituted; (ii) a terminal fluoroalkyl, fluoroether, perfluoroalkyl, or perfluoroether group; and (iii) an alkylene or fluoroalkylene group optionally containing at least one caternary ether oxygen atom; (b) a chiral or achiral terminal portion consisting of a hydrocarbon or hydrocarbon ether group, and, when chiral, comprising at least one chiral center, which can optionally be heteroatom-substituted; and (c) a central core connecting the terminal portions; the alkylene or fluoroalkylene group of the chiral fluorochemical terminal portion having at least 3 in-chain atoms and being located between the chiral center of the chiral fluorochemical terminal portion and the central core. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.

    Liquid crystal compounds having a chiral fluorinated terminal portion
    9.
    发明授权
    Liquid crystal compounds having a chiral fluorinated terminal portion 失效
    具有手性氟化末端部分的液晶化合物

    公开(公告)号：US06309561B1

    公开(公告)日：2001-10-30

    申请号：US08998400

    申请日：1997-12-24

    申请人： Masakazu Hasegawa ,  Michael P. Keyes ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad ,  Terence D. Spawn

    发明人： Masakazu Hasegawa ,  Michael P. Keyes ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad ,  Terence D. Spawn

    IPC分类号： C09K1934

    CPC分类号： C07D239/26 ,  C07D239/34 ,  C09K19/3405 ,  C09K19/3463 ,  C09K19/3469 ,  C09K19/3491 ,  C09K19/3497 ,  C09K2019/3408

    摘要： Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion comprising (i) at least one chiral center, which can optionally be heteroatom-substituted; (ii) a terminal fluoroalkyl, fluoroether, perfluoroalkyl, or perfluoroether group; and (iii) an alkylene or fluoroalkylene group optionally containing at least one catenary ether oxygen atom; (b) a chiral or achiral terminal portion consisting of a hydrocarbon or hydrocarbon ether group, and, when chiral, comprising at least one chiral center, which can optionally be heteroatom-substituted; and (c) a central core connecting the terminal portions; the alkylene or fluoroalkylene group of the chiral fluorochemical terminal portion having at least 3 in-chain atoms and being located between the chiral center of the chiral fluorochemical terminal portion and the central core. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.

    摘要翻译： 含氟手性液晶化合物包含（a）手性含氟末端部分，其包含（i）至少一个可任选被杂原子取代的手性中心; （ii）末端氟代烷基，氟代醚，全氟烷基或全氟醚基团; 和（iii）任选地含有至少一个链状醚氧原子的亚烷基或氟亚烷基; （b）由烃或烃醚基组成的手性或非手性末端部分，以及当手性包含至少一个手性中心时，该手性中心可任选被杂原子取代; 和（c）连接端子部分的中心芯部; 手性含氟末端部分的亚烷基或氟亚烷基具有至少3个链内原子并且位于手性含氟末端部分的手性中心和中心核心之间。 这些化合物具有近晶中间相或潜在的近晶中间相，并且可用于例如液晶显示装置。

    Tristable liquid crystal display device
    10.
    发明授权
    Tristable liquid crystal display device 失效
    三态液晶显示装置

    公开(公告)号：US6057007A

    公开(公告)日：2000-05-02

    申请号：US131711

    申请日：1998-08-10

    申请人： Takashi Amano ,  Michael P. Keyes ,  Steven J. Martin ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    发明人： Takashi Amano ,  Michael P. Keyes ,  Steven J. Martin ,  Marc D. Radcliffe ,  Patricia M. Savu ,  Daniel C. Snustad

    IPC分类号： G02F1/141 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/54 ,  G02F1/13 ,  G02F1/1335 ,  G02F1/1343

    CPC分类号： C09K19/0266 ,  C09K19/04 ,  C09K19/34 ,  C09K19/345 ,  C09K19/3469 ,  C09K19/3497 ,  Y10T428/1036

    摘要： A tristable liquid crystal display device comprises (a) first and second opposed substrates, at least one bearing an alignment coating and each bearing at least one electrode so as to define one or a plurality of pixels; (b) a tilted smectic or induced tilted smectic liquid crystal composition disposed between the substrates; and (c) a pair of orthogonally disposed polarizers, each having a polarization axis, one polarization axis being aligned with the zero field optical axis of a tilted smectic or induced tilted smectic mesophase of the liquid crystal composition; wherein the substrates are disposed so as to provide an alignment of the liquid crystal composition, the composition comprising at least one chiral liquid crystal compound that can be represented by the following formula:R--M--N--(P).sub.b --OCH.sub.2 C*HF--CH.sub.2 O(CH.sub.2).sub.a R.sub.f(I)where M, N, and P are independently selected from the group consisting of aromatic, heteroaromatic, alicyclic, heteroalicyclic, substituted aromatic, substituted heteroaromatic, substituted alicyclic, and substituted heteroalicyclic rings, the individual rings being fused or non-fused, and the rings being connected with each other by a covalent bond or an organic linking group; R is alkyl, alkenyl, alkoxy, or alkoxy alkylene; * designates a chiral center; a is an integer of 0 or 1; b is an integer of 0 or 1; and Rf is a perfluoroether group.

    摘要翻译： 三重液晶显示装置包括（a）第一和第二相对的基板，至少一个轴承对准涂层，并且每个轴承至少一个电极以限定一个或多个像素; （b）设置在基板之间的倾斜的近晶或诱导倾斜的近晶液晶组合物; 和（c）一对正交设置的偏振器，每个具有偏振轴，一个偏振轴与液晶组合物的倾斜的近晶或诱导的倾斜的近晶中间相的零场光轴对齐; 其特征在于，所述基板配置为提供所述液晶组合物的取向，所述组合物含有可由下式表示的至少一种手性液晶化合物：RMN-（P）b-OCH2C * HF-CH2O（CH2 ）aRf（I）其中M，N和P独立地选自芳族，杂芳族，脂环族，杂脂环，取代的芳族，取代的杂芳族，取代的脂环族和取代的杂脂环， 并且所述环通过共价键或有机连接基彼此连接; R是烷基，烯基，烷氧基或烷氧基亚烷基; *指定手性中心; a是0或1的整数; b为0或1的整数; Rf为全氟醚基。