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    3.
    发明专利
    未知

    公开(公告)号：AT166978T

    公开(公告)日：1998-06-15

    申请号：AT93116808

    申请日：1993-10-18

    Applicant: CANON KK

    Inventor： OKADA SHINJIRO ,  INABA YUTAKA ,  KOJIMA MAKOTO ,  KATAKURA KAZUNORI

    IPC: G02F1/1333 ,  G02F1/1335 ,  G02F1/1343

    Abstract: A liquid crystal display device is constituted by a pair of electrode plates each having a plurality of elongated electrodes, and a layer of ferroelectric liquid crystal disposed between the electrode plates so as to form a pixel at each intersection of elongated electrodes disposed respectively on the pair of electrodes plates. At least one electrode plate is provided with an unevenness at each pixel so as to form a cell thickness gradient ( alpha 1 alpha 2), within each pixel, and at least one electrode plate is provided with at least three types of color filters each corresponding to a pixel. Further, each color filter and/or each pixel (R,G,B) is set to have an area and/or a shape varying depending on a local cell thickness so that light quantities or sensible light quantities transmitted through the respective filters and the liquid crystal layer are identical to each other regardless of the type of color filter. A similar pixel pattern deformation is effective for providing a linear T (transmittance) - log V (voltage) characteristic. Color pixels pattern deformation may preferably be effected in a complementary manner with respect to different colors.

    LIQUID CRYSTAL DEVICE
    5.
    发明专利
    LIQUID CRYSTAL DEVICE 未知

    公开(公告)号：GB2264713A

    公开(公告)日：1993-09-08

    申请号：GB9302179

    申请日：1993-02-04

    Applicant: CANON KK

    Inventor： ASAOKA MASANOBU ,  TAKAO HIDEAKI ,  TOGANO TAKESHI ,  KOJIMA MAKOTO

    IPC: C08G73/10 ,  G02F1/1337

    Abstract: A liquid crystal device includes: a liquid crystal disposed between a pair of substrates; at least one of which has thereon an alignment film comprising a polyimide or polyamide imide formed by reaction between a diamine component of formula (1) shown below and at least two acid components selected from tetracarboxylic acid components having a structure of formula (2) shown below at least including a naphthalenetetracarboxylic acid component, and dicarboxylic acid components having a structure of formula (3) shown below: wherein R and R2 independently denote an alkyl group or a fluoroalkyl group having 1-10 carbon atoms; wherein A and B respectively denote a tetravalent or divalent organic residue comprising an aromatic ring, aromatic

    6.
    发明专利
    未知

    公开(公告)号：DE69526291D1

    公开(公告)日：2002-05-16

    申请号：DE69526291

    申请日：1995-07-31

    Applicant: CANON KK

    Inventor： KANEKO SHUZO ,  GOFUKU IHACHIRO ,  KISHI ETSURO ,  KOJIMA MAKOTO ,  NAKAMURA KATSUTOSHI

    IPC: G02F1/1333 ,  G02F1/1337 ,  G02F1/141

    Abstract: A liquid crystal device is constituted by a pair of oppositely disposed substrates including a first substrate having a uniaxial alignment characteristic and a second substrate having a non-uniaxial alignment characteristic and a liquid crystal disposed between the first and second substrates. The first and second substrates are controlled to have surface potentials providing a difference therebetween of less than 50 mV in terms of an absolute value at their liquid crystal-contacting surfaces. As a result, the liquid crystal device is provided with an improved symmetry of switching threshold while retaining a good liquid crystal alignment characteristic.

    10.
    发明专利
    未知

    公开(公告)号：DE69221812T2

    公开(公告)日：1998-02-12

    申请号：DE69221812

    申请日：1992-10-21

    Applicant: CANON KK

    Inventor： ASAOKA MASANOBU ,  TAKAO HIDEAKI ,  HANYU YUKIO ,  KOJIMA MAKOTO

    IPC: C08G73/10 ,  G02F1/1337

    Abstract: A liquid crystal device is constituted by a pair of substrates each provided with a transparent electrode, and a liquid crystal disposed between the substrates; at least one of said pair of substrates having thereon an alignment film comprising (i) a polyimide including principally a recurring unit of the following structural formula (I): wherein R denotes a tetravalent organic group, and R and R denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms, and also at most 20 mol. % of a recurring monoamine unit of the following structural formula (II): wherein R and R denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms, and X denotes an aromatic group, a heterocyclic group or a derivative group thereof; or (ii) a polyimide obtained through a reaction of at least two species of tetracarboxylic anhydrides of the following formula (III): wherein R denotes a tetravalent organic group, and a diamine of the following formula (IV): wherein R and R denote the same or different alkyl or perfluoroalkyl groups having 1 - 10 carbon atoms.

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