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    3.
    发明专利
    未知

    公开(公告)号：AT233800T

    公开(公告)日：2003-03-15

    申请号：AT96120184

    申请日：1992-11-20

    Applicant: CANON KK

    Inventor： TERADA MASAHIRO ,  YAMASHITA MASATAKA ,  KATAGIRI KAZUHARU ,  YOSHIDA AKIO ,  MORI SHOSEI ,  YAMADA SYUJI

    IPC: C09K19/02 ,  C09K19/42 ,  C09K19/46 ,  G02F1/141

    Abstract: A liquid crystal device with a decreased temperature-dependence of response speed is obtained by using a liquid crystal composition having a temperature range of smectic A phase, wherein the composition forms a plurality of first molecular layers each composed of plural liquid crystal molecules in smectic A phase, and also a temperature range of chiral smectic C phase, wherein the composition forms a plurality of second molecular layers each composed of plural liquid crystal molecules in chiral smectic C phase, the second molecular layers being formed through deformation from the first molecular layers and showing a degree of deformation with respect to the first molecular layers which varies at different temperatures. The temperature range of chiral smectic C phase includes a) a first temperature range where the second molecular layers show a degree of deformation which increases on temperature decrease down to a mediate temperature, and b) a second temperature range, below the first temperature range, where the second molecular layers show a degree of deformation which decreases on further temperature decrease below the mediate temperature.

    4.
    发明专利
    未知

    公开(公告)号：DE69113075T2

    公开(公告)日：1996-03-28

    申请号：DE69113075

    申请日：1991-02-14

    Applicant: CANON KK

    Inventor： YOSHIDA AKIO ,  TOGANO TAKESHI ,  SATO JUNKO

    IPC: C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  C09K19/06 ,  C09K19/20 ,  C09K19/30

    Abstract: A liquid crystal composition containing at least one compound represented by the following formulas (I) to (IV): wherein R denotes hydrogen, or a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; and X denotes -O-, wherein R1 denotes a linear or branched alkyl or alkoxy group having 1 - 18 carbon atoms capable of having a substituent; and X1 denotes or -CH2O-: wherein R2 denotes hydrogen, or a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; X2 denotes a single bond, -O-, Y1, Y2, Y3 and Y4 respectively denote hydrogen, fluorine or -CF3 with proviso that at least one of Y1, Y2, Y3 and Y4 is fluorine or -CF3; and n is 0 or 1; and wherein R3 denotes a linear or branched alkyl group having 1 - 18 carbon atoms capable of having a substituent; -A- denotes X3 denotes -O-, or a single bond, X4 denotes -O-, or -CH2O-; and m is 0 or 1. The compounds of the formulas (I) to (IV) provide a liquid crystal composition having a stably lowered resistivity, thus quickly attenuating a reverse voltage caused by localization of charges in the liquid crystal composition.

    9.
    发明专利
    未知

    公开(公告)号：DE3887569T2

    公开(公告)日：1994-08-04

    申请号：DE3887569

    申请日：1988-06-03

    Applicant: CANON KK

    Inventor： SHINJO KENJI ,  TERADA MASAHIRO ,  UCHIMI TOSHIHARU ,  YOSHIDA AKIO ,  TOGANO TAKESHI ,  ASAOKA MASANOBU ,  IWAKI TAKASHI

    IPC: C09K19/30 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  G02F1/141 ,  G02F1/133

    Abstract: A ferroelectric chiral smectic liquid crystal composition is provided with a fast response speed and a less temperature dependency of the response speed by containing at least one mesomorphic compound represented by the formula (1) below:wherein R 1 denotes an alkyl group having 1 - 16 carbon atoms and capable of having a substituent; R 2 denotes an alkyl group, alkoxy group, alkoxycarbonyl group, acyloxy group or alkoxycarbonyloxy group each having 1 - 16 carbon atoms and capable of having a substituent; andrespectively denoteseach capable of having a substituent.

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