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    1.
    发明专利
    未知

    公开(公告)号：DE68929393D1

    公开(公告)日：2002-05-23

    申请号：DE68929393

    申请日：1989-06-22

    Applicant: CANON KK

    Inventor： HANYU YUKIO ,  TANIGUCHI OSAMU ,  UCHIMI TOSHIHARU ,  ASAOKA MASANOBU

    IPC: G02F1/1339 ,  G02F1/1341 ,  G02F1/141 ,  G02F1/133 ,  G02F1/137

    Abstract: A process for producing a liquid crystal device, comprising:(a) providing a pair of substrates (102,103), dispersing adhesive particles (106) on one substrate and dispersing rigid spacer particles (105) having an average diameter smaller than that of the adhesive particles on the other substrate,(b) superposing said one and the other substrates with each other so that the adhesive particles and the rigid spacer particles are disposed between the substrates,(c) applying a heat and a pressure to bond the substrates with adhesive particles in a cured and depressed state while leaving a gap determined by the rigid spacer particles between the substrates, and(d) disposing a liquid crystal (104) at the gap between the substrates to form a liquid crystal cell.

    4.
    发明专利
    未知

    公开(公告)号：AT180580T

    公开(公告)日：1999-06-15

    申请号：AT91103125

    申请日：1991-03-01

    Applicant: CANON KK

    Inventor： HANYU YUKIO ,  INABA YUTAKA ,  ASAOKA MASANOBU ,  TANIGUCHI OSAMU ,  SHINJO KENJI ,  UCHIMI TOSHIHARU

    IPC: G02F1/1337 ,  G02F1/141 ,  G09G3/36 ,  G02F1/137

    Abstract: A ferroelectric liquid crystal element comprises a ferroelectric liquid crystal and a pair of substantially parallel substrates having opposite surfaces between which the ferroelectric liquid crystal is sealed. The substrates are provided with electrodes to which voltages are applied, and are subjected to one axis parallel orientation treatment (A) so as to orient the ferroelectric liquid crystal. The ferroelectric liquid crystal shows a Chevron layer structure. The pretilt angle alpha of the liquid crystal to the orientation film is in the range 12 DEG -30 DEG , whereby a stable C1U orientation state is obtained at 90% density or more.

    5.
    发明专利
    未知

    公开(公告)号：DE69228956D1

    公开(公告)日：1999-05-27

    申请号：DE69228956

    申请日：1992-01-07

    Applicant: CANON KK

    Inventor： INABA YUTAKA ,  OKADA SHINJIRO ,  TANIGUCHI OSAMU ,  MIZUNO HIRONOBU

    IPC: G02F1/133 ,  G02F1/137 ,  G02F1/141 ,  G09G3/18 ,  G09G3/36

    Abstract: In a ferroelectric liquid crystal element, which is constituted by holding a chiral smectic liquid crystal exhibiting ferroelectricity between electrode substrates, and in which the liquid crystal presents a plurality of surface stabilization states according to an electric field applied through the electrode substrates, and an alternating electric field having a strength equal to or higher than a constant value is applied during a period for inhibiting transition of the surface stabilization state, and to a corresponding liquid crystal portion, within a range causing no transition, the strength of the alternating electric field to be applied during the period for inhibiting transition of the surface stabilization state, and to the corresponding liquid crystal portion is set to be equal to or lower than a predetermined value which does not cause the liquid crystal to flow.

    6.
    发明专利
    未知

    公开(公告)号：AT169414T

    公开(公告)日：1998-08-15

    申请号：AT93100950

    申请日：1993-01-22

    Applicant: CANON KK

    Inventor： HANYU YUKIO ,  TSUBOYAMA AKIRA ,  TANIGUCHI OSAMU ,  MIHARA TADASHI ,  NAKAMURA KATSUTOSHI ,  MORI SUNAO

    IPC: G02F1/1337 ,  G02F1/141 ,  G02F1/137

    Abstract: A ferroelectric liquid crystal device is constituted by disposing a ferroelectric liquid crystal between a pair of substrates having thereon electrodes for voltage application and provided with uniaxial alignment axes, as by rubbing, so as to provide a high pretilt angle of at least 10 degrees. A problematic liquid crystal movement in such a high-pretilt angle ferroelectric liquid crystal device is suppressed by improving a smectic layer structure therein, inclusive of a symmetry of pretilt angles at the pair of substrate boundary surfaces. Such an improved smectic layer structure is accomplished by a realigning treatment after cooling to the chiral smectic phase or in the final stage of the cooling to the chiral smectic phase as by application of an AC electric field and/or by repetitive heating-cooling in the chiral smectic phase. The improved smectic layer structure is represented by, e.g., an X-ray diffraction peak having an increased peak area and/or a decreased half-value width.

    7.
    发明专利
    未知

    公开(公告)号：AT157793T

    公开(公告)日：1997-09-15

    申请号：AT93120668

    申请日：1993-12-22

    Applicant: CANON KK

    Inventor： INABA YUTAKA ,  OKADA SHINJIRO ,  TANIGUCHI OSAMU ,  KATAKURA KAZUNORI

    IPC: G09G3/20 ,  G09G3/36

    Abstract: A liquid crystal device is constituted by a pair of oppositely disposed substrates respectively having thereon a group of stripe-shaped scanning electrodes and a group of stripe-shaped data electrodes disposed to intersect the scanning electrodes and a liquid crystal disposed between the scanning electrodes and the data electrodes so as to form a pixel at each intersection of the scanning electrodes and the data electrodes. The liquid crystal device is driven by applying a scanning selection signal sequentially to the scanning electrodes, and applying data signals to the data electrodes while phase modulating the data signals depending on given gradation data. One unit period of data signal is divided into plural sections, the data signals in each section are phase-modulated in one direction in accordance with an increase in gradation data, and the data signals in mutually adjacent sections are phase-modulated in mutually opposite directions in accordance with an increase in gradation data.

    FERROELECTRIC LIQUID CRYSTAL DEVICE
    8.
    发明专利
    FERROELECTRIC LIQUID CRYSTAL DEVICE 未知

    公开(公告)号：CA1331409C

    公开(公告)日：1994-08-09

    申请号：CA615536

    申请日：1989-10-23

    Applicant: CANON KK

    Inventor： TSUBOYAMA AKIRA ,  INABA YUTAKA ,  OKADA SHINJIRO ,  TANIGUCHI OSAMU ,  KAWAGISHI HIDEYUKI

    IPC: G09G3/36

    Abstract: A liquid crystal apparatus comprising a ferroelectric liquid crystal device matrix having electrodes, including scanning electrodes and signal electrodes spaced from and intersecting with each other, and a ferroelectric liquid crystal disposed between the scanning electrodes and the signal electrodes, a driving circuit for applying a driving voltage selectively to the intersections of the scanning electrodes and the signal electrodes, and a uniform electric field application circuit for applying an alternating electric field to all or a prescribed part of the intersections before the application of said driving voltage; said ferroelectric liquid crystal providing two average molecular directions forming an angle 2.theta.a therebetween in the absence of an electric field after application of an alternating electric field, said angle 2.theta.a being larger than an angle 2.theta. formed between two average molecular directions of the ferroelectric liquid crystal in the absence of an electric field before application of the alternating electric field.

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