Ferroelectric chiral smectic liquid crystal composition and liquid
crystal device using same
    13.
    发明授权
    Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same 失效
    铁电手性近晶液晶组合物和使用其的液晶装置

    公开(公告)号:US5173211A

    公开(公告)日:1992-12-22

    申请号:US378824

    申请日:1989-07-12

    IPC分类号: C09K19/42

    CPC分类号: C09K19/42

    摘要: A ferroelectric chiral smectic liquid crystal composition, comprising at least one optically active compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; R.sub.2 denotes a linear or branched alkyl group having 1-14 carbon atoms capable of having a substituent; and X.sub.1 denotes a single bond, ##STR2## and at least one optically active compound represented by the following formula (II): ##STR3## wherein R.sub.3 denotes a linear alkyl group having 1-14 carbon atoms; R.sub.4 denotes a linear or branched alkyl group having 1-14 carbon atoms capable of having a substituent; and X.sub.2 denotes a single bond, ##STR4##

    摘要翻译: 一种铁电手性近晶液晶组合物,其包含至少一种由下式(I)表示的光学活性化合物:其中R 1表示具有1-18个碳原子的具有取代基的直链或支链烷基 ; R2表示可具有取代基的具有1-14个碳原子的直链或支链烷基; 并且X1表示单键,和下式(II)表示的至少一种光学活性化合物:其中R 3表示具有1-14个碳原子的直链烷基; R4表示可具有取代基的具有1-14个碳原子的直链或支链烷基; X2表示单键,

    Ferroelectric chiral smectic liquid crystal composition and liquid
crystal device using same
    16.
    发明授权
    Ferroelectric chiral smectic liquid crystal composition and liquid crystal device using same 失效
    铁电手性近晶液晶组合物和使用其的液晶装置

    公开(公告)号:US5250221A

    公开(公告)日:1993-10-05

    申请号:US968478

    申请日:1992-10-29

    摘要: A ferroelectric chiral smectic liquid crystal composition, comprising at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote a linear or branched alkyl group having 1-8 carbon atoms capable of having a substituent; X.sub.1 and X.sub.2 respectively denote a single bond, ##STR2## Y.sub.1 denotes --CH.sub.2 O-- or --OCH.sub.2 --; and m and n are respectively 1 or 2; and at least one compound represented by the following formula (II): ##STR3## wherein R.sub.3 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent, R.sub.4 denotes a linear alkyl group having 1-10 carbon atoms; X.sub.3 denotes a single bond, ##STR4## Y.sub.2 denotes ##STR5##

    摘要翻译: 一种铁电手性近晶液晶组合物,其包含至少一种由下式(I)表示的化合物:其中R 1和R 2分别表示可具有1-8个碳原子的直链或支链烷基, 取代基; X1和X2分别表示单键,Y1表示-CH2O-或-OCH2-; m和n分别为1或2; 和由下式(II)表示的至少一种化合物:其中R 3表示可具有取代基的具有1-18个碳原子的直链或支链烷基,R4表示具有1- 10个碳原子; X3表示单键, Y2表示

    Liquid crystal apparatus and chiral smectic liquid crystal composition
for use therein
    19.
    发明授权
    Liquid crystal apparatus and chiral smectic liquid crystal composition for use therein 失效
    液晶装置及其使用的CHIRAL SMECTIC LIQUID STYSTAL COMPOSITION

    公开(公告)号:US5119219A

    公开(公告)日:1992-06-02

    申请号:US543415

    申请日:1990-06-26

    摘要: A liquid crystal apparatus includes a chiral smectic liquid crystal showing a first and a second orientation state disposed between first and second electrodes of a liquid cell. A drive circuit applies voltages between the first and second electrodes including voltages .vertline.V.sub.S .vertline. and .vertline.V.sub.I .vertline. which provide voltages V.sub.A and V.sub.B (V.sub.B V.sub.A) satisfying the relationship of: .vertline.(V.sub.A -V.sub.B)/(V.sub.A +V.sub.B).vertline.>0.1 at 40.degree. C. V.sub.A is a minimum peak value of a voltage .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. (at a constant pulse width) capable of inverting the first orientation state of the chiral smectic liquid crystal into the second orientation state when a voltage pulse is applied between the first and second electrodes to cause the first orientation state of the chiral smectic liquid crystal and then the voltage .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. is applied between the first and second electrodes as a combination of a voltage .vertline.V.sub.S .vertline. applied to the first electrode and a voltage - V.sub.I .vertline. applied to the second electrode V.sub.B is a value of .vertline.V.sub.S .vertline.+.vertline.V.sub.I .vertline. calculated based on a maximum peak value of a voltage .vertline.V.sub.S .vertline.-.vertline.V.sub.I .vertline. capable of maintaining the first orientation state of the chiral smectic liquid crystal when a voltage pulse is applied between the first and second electrodes to cause the first orientation state and then the voltage .vertline.V.sub.S .vertline.-.vertline.V.sub.I .vertline. is applied between the first and second electrodes as a combination of a voltage .vertline.V.sub.S .vertline. applied to the first electrode and a voltage .vertline.V.sub.I .vertline. applied to the second electrode.