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.

公开(公告)号：DE3855962D1

公开(公告)日：1997-08-21

申请号：DE3855962

申请日：1988-09-19

Applicant: CANON KK

Inventor： HANYU YUKIO ,  KANBE JUNICHIRO ,  KAWAGISHI HIDEYUKI ,  INABA YUTAKA

IPC: G02F1/141 ,  G02F1/137

Abstract: This invention provides a liquid crystal device, comprising: a pair of substrates (11a,11b), and a chiral smectic liquid crystal (15), said chiral smectic liquid crystal has a temperature range for providing smectic A phase on a higher temperature side than its chiral smectic C phase, is placed in chiral smectic C phase by cooling through the temperature range of the smectic A phase, and is disposed between the substrates so as to form a layer structure including a plurality of layers each composed of plural liquid crystal molecules and an alignment state of suppressing a helical structure inherent to the chiral smectic liquid crystal. Said plurality of layers are bent so as to form a region of a major areal proportion, wherein the layers are rotated in a direction so as to form the bent layers with respect to an adjacent substrate, which direction is reverse to a rotation direction of liquid crystal molecules adjacent to the adjacent substrate for standing up from the adjacent substrate, in a temperature region close to a transition temperature between the smectic A phase and the chiral smectic C phase.

公开(公告)号：DE69120564T2

公开(公告)日：1996-12-19

申请号：DE69120564

申请日：1991-03-19

Applicant: CANON KK

Inventor： INABA YUTAKA ,  KUREMATSU KATSUMI ,  KANEKO SHUZO

IPC: G02F1/133 ,  G09G3/18 ,  G09G3/20 ,  G09G3/36

公开(公告)号：AT140097T

公开(公告)日：1996-07-15

申请号：AT91104222

申请日：1991-03-19

Applicant: CANON KK

Inventor： INABA YUTAKA ,  KUREMATSU KATSUMI ,  KANEKO SHUZO

IPC: G02F1/133 ,  G09G3/18 ,  G09G3/20 ,  G09G3/36

公开(公告)号：DE68923654D1

公开(公告)日：1995-09-07

申请号：DE68923654

申请日：1989-05-31

Applicant: CANON KK

Inventor： OKADA SHINJIRO ,  INABA YUTAKA

IPC: G02F1/133 ,  G09G3/36

公开(公告)号：DE3689788T2

公开(公告)日：1994-08-11

申请号：DE3689788

申请日：1986-11-18

Applicant: CANON KK

Inventor： TAKAHASHI TOHRU ,  INOUE HIROSHI ,  OSADA YOSHIYUKI ,  INABA YUTAKA ,  KANBE JUNICHIRO

IPC: G02F1/133 ,  G02F1/137 ,  G02F1/141 ,  G09G3/20 ,  G09G3/36 ,  H04N3/12

Abstract: An optical modulation device is disclosed, which includes: a first substrate having thereon a signal transmission electrode connected to a signal source and a first electrode having a delay function connected to the transmission electrode; a second substrate having thereon a second electrode disposed opposite to said first electrode; and an optical modulation material, particularly a ferroelectric liquid crystal, disposed between the first and second electrodes. An optical modulation system, particularly a gradational display system, utilizing the delay function is also disclosed.

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.

公开(公告)号：DE3787660D1

公开(公告)日：1993-11-11

申请号：DE3787660

申请日：1987-02-17

Applicant: CANON KK

Inventor： INOUE HIROSHI ,  OSADA YOSHIYUKI ,  INABA YUTAKA

IPC: G09G3/36

Abstract: A driving apparatus comprises a scanning driver circuit connected to scanning electrodes and a signal driver circuit connected to signal electrodes. The sccanning driver circuit comprises: a drive signal voltage generating unit which includes a first signal voltage generating unit for generating a scanning selection signal voltage supplied to a first bus, and a second signal voltage generating unit for generating a scanning nonselection signal voltage supplied to a second bus, a switching circuit unit for selectively supplying the scanning selection signal or the scanning nonselection signal to a scanning electrode, and a switching signal generating unit for supplying a switching control signal to the switching circuit unit.

公开(公告)号：DE3785687T2

公开(公告)日：1993-09-02

申请号：DE3785687

申请日：1987-02-11

Applicant: CANON KK

Inventor： INOUE HIROSHI ,  OSADA YOSHIYUKI ,  INABA YUTAKA

IPC: G09G3/36

公开(公告)号：CA1302550C

公开(公告)日：1992-06-02

申请号：CA577675

申请日：1988-09-16

Applicant: CANON KK

Inventor： HANYU YUKIO ,  KANBE JUNICHIRO ,  KAWAGISHI HIDEYUKI ,  INABA YUTAKA

IPC: G02F1/133 ,  G02F1/137

Abstract: A ferroelectric smectic liquid crystal device having an improved impact resistance and an improved contrast is provided by using a pair of substrates provided with uniaxial alignment axes which are parallel and identical in direction with each other. A ferroelectric smectic liquid crystal is disposed between the pair of substrates so as to assume a higher-temperature alignment state and a lowertemperature alignment state on temperature decrease in its ferroelectric smectic phase placed in a bistable alignment state. The ferroelectric smectic liquid crystal is further placed in the lower-temperature alignment state which is characterized by having an inclination of forming a connected pair of a lightning defect and a hair pin defect coming after the lightning defect.