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    Optically active compound, liquid crystal composition containing the same, liquid crystal device using the same, liquid crystal apparatus and display method
    2.
    发明授权
    Optically active compound, liquid crystal composition containing the same, liquid crystal device using the same, liquid crystal apparatus and display method 失效
    光学活性化合物，含有它们的液晶组合物，使用其的液晶装置，液晶装置和显示方法

    公开(公告)号：US5849217A

    公开(公告)日：1998-12-15

    申请号：US748971

    申请日：1996-11-13

    申请人： Shinichi Nakamura ,  Takao Takiguchi ,  Takashi Iwaki ,  Takeshi Togano ,  Yoko Kosaka

    发明人： Shinichi Nakamura ,  Takao Takiguchi ,  Takashi Iwaki ,  Takeshi Togano ,  Yoko Kosaka

    IPC分类号： G02F1/13 ,  C07D307/33 ,  C07D405/10 ,  C07D413/10 ,  C07D417/10 ,  C09K19/02 ,  C09K19/34 ,  C09K19/46 ,  C09K19/58 ,  C07D305/12 ,  C07D307/02 ,  G02F1/133

    CPC分类号： C07D307/33 ,  C07D405/10 ,  C09K19/0225 ,  C09K19/3444 ,  C09K19/3466 ,  C09K19/46 ,  C09K19/588 ,  C09K19/3405 ,  C09K19/3411 ,  C09K2019/3422

    摘要： An optically active compound represented by the formula R.sub.1 --A.sub.1 --A.sub.2 --X.sub.1 --A.sub.3 --(CH.sub.2).sub.p --L--A.sub.4 --R.sub.2, in which R.sub.1 is F, CN or straight chain, branched or cyclic alkyl and R.sub.2 is H, F, CH or straight chain or branched alkyl; A.sub.3 is 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyrazine-2,5-diyl, pyridazine-3,6-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-ditiane-2,5-diyl, thiophene-2,5-diyl, thiazole-2,5-diyl, thiaziazole-2,5-diyl, benzoxazole-2,5-diyl, benzoxazole-2,6-diyl, benzothiazole-2,5-diyl, benzothiazole-2,6-diyl, benzofuran-2,5-diyl, benzofuran-2,6-diyl, quinoxaline-2,6-diyl, quinoline-2,6-diyl, 2,6-naphthylene, indane-2,5-diyl, 2-alkylindane-2,5-diyl, indanone-2,6-diyl, 2-alkylindane-2,6-diyl, coumarane-2,5-diyl and 2-alkylcoumarane-2,5-diyl; A.sub.1, A.sub.2 and A.sub.4 are single bond or A.sub.3 ; X.sub.1 ' is a single bond, --COO--, --OCO--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.dbd.CH-- or --C.tbd.C--; p is an integer from 2 to 20; and L is optically active.

    摘要翻译： 由式R1-A1-A2-X1-A3-（CH2）pL-A4-R2表示的光学活性化合物，其中R1为F，CN或直链，支链或环状烷基，R2为H，F，CH 或直链或支链烷基; A3是1,4-亚苯基，吡啶-2,5-二基，嘧啶-2,5-二基，吡嗪-2,5-二基，哒嗪-3,6-二基，1,4-亚环己基， 二恶烷-2,5-二基，1,3-二噻烷-2,5-二基，噻吩-2,5-二基，噻唑-2,5-二基，噻唑-2,5-二基，苯并恶唑-2,5-二基， 二苯基恶唑-2,6-二基，苯并噻唑-2,5-二基，苯并噻唑-2,6-二基，苯并呋喃-2,5-二基，苯并呋喃-2,6-二基，喹喔啉-2,6-二基， 喹啉-2,6-二基，2,6-亚萘基，二氢化茚-2,5-二基，2-烷基二烷基-2,5-二基，二氢茚酮-2,6-二基，2-烷基二氢化茚-2,6-二基， 香豆烷-2,5-二基和2-烷基香豆烷-2,5-二基; A1，A2和A4是单键或A3; X 1'为单键，-COO - ， - OCO - ， - CH 2 O - ， - OCH 2 - ， - CH 2 CH 2 - ， - CH = CH-或-C p是2至20的整数; L是光学活性的。

    Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method
    10.
    发明授权
    Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method 失效
    液晶化合物，液晶组合物，液晶装置，显示装置和显示方法

    公开(公告)号：US5188762A

    公开(公告)日：1993-02-23

    申请号：US702320

    申请日：1991-05-20

    申请人： Takashi Iwaki ,  Takao Takiguchi ,  Takeshi Togano ,  Yoko Yamada ,  Shinichi Nakamura

    发明人： Takashi Iwaki ,  Takao Takiguchi ,  Takeshi Togano ,  Yoko Yamada ,  Shinichi Nakamura

    IPC分类号： G02F1/13 ,  C07F7/08 ,  C07F7/10 ,  C09K19/40 ,  C09K19/42

    CPC分类号： C07F7/0818 ,  C07F7/0812 ,  C09K19/406

    摘要： A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 2-16 carbon atoms capable of including one or two non-neighboring methylene groups which can be replaced with ##STR2## and capable of including fluorine substituted for hydrogen; A denotes --A.sub.1 -- or --A.sub.1 --A.sub.2 -- and B denotes --B.sub.1 -- or --B.sub.1 --B.sub.2 -- wherein A.sub.1, A.sub.2, B.sub.1 and B.sub.2 respectively denote ##STR3## wherein Y.sub.1 and Y.sub.2 respectively denote H, F, Cl, Br, --CH.sub.3, --CN or --CF.sub.3 ; Z.sub.1 and Z.sub.2 respectively denote ##STR4## Z.sub.3 denotes ##STR5## R.sub.2, R.sub.3 and R.sub.4 respectively denote a linear or branched alkyl group having 1-16 carbon atoms including a methylene group which can be replaced with ##STR6## with proviso that it is not adjacent to the silicon atom; p and q are respectively 0 or 1 with proviso that p+q is 0 or 1; and n is an integer of 1-12. The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing an improved low-temperature operation characteristic and a decreased temperature-dependence of response speed.