公开(公告)号：FR2584845B1

公开(公告)日：1996-06-21

申请号：FR8610203

申请日：1986-07-11

Applicant: CANON KK

Inventor： OKADA SHINGIRO ,  TAKAHASHI TOHRU ,  KAWAGISHI HIDEYUKI ,  INABA YUTAKA ,  TANIGUCHI OSAMU ,  KANAGAWA KEN

IPC: G02F1/13357 ,  G09G3/34 ,  G09G3/36 ,  C09K19/00 ,  G09F9/35

Abstract: A liquid crystal apparatus, comprising a liquid crystal panel comprising a plurality of scanning lines, and a plurality of picture elements disposed along each of the scanning lines and comprising a ferroelectric liquid crystal; a backlight disposed behind the liquid crystal panel for illuminating the liquid crystal panel, the backlight changing the light quantity emitted therefrom with the elapse of time. The liquid crystal apparatus is so driven that the low level of the light quantity of the backlight is synchronized with a time when a writing signal is applied to picture elements on at least one scanning line.

公开(公告)号：DE68923654T2

公开(公告)日：1996-01-18

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：DE3854751D1

公开(公告)日：1996-01-18

申请号：DE3854751

申请日：1988-06-13

Applicant: CANON KK

Inventor： TSUBOYAMA AKIRA ,  INABA YUTAKA ,  YOSHIDA AKIO ,  HANYU YUKIO ,  UCHIMI TOSHIHARU ,  YAMASHITA MASATAKA

IPC: C09K19/12 ,  C09K19/20 ,  C09K19/22 ,  C09K19/28 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/46 ,  G02F1/1333 ,  G02F1/141 ,  G02F1/137 ,  C09K19/06

Abstract: A ferroelectric liquid crystal device comprises a pair of opposite electrodes (102a, 102b) and a ferroelectric liquid crystal disposed between the electrodes. At least one of the opposite electrodes (102a, 102b) is coated with an insulating film having a thickness of 200 ANGSTROM or larger. The ferroelectric liquid crystal has a capacitance CLC (nF/cm ) and a spontaneous polarization Ps (nC/cm ) and the insulating film has a capacitance Ci (nF/cm ) satisfying the relationship of Ci(nF/cm ) >/= 2.Ps(nC/cm ) - CLC(nF/cm ).

公开(公告)号：AT131290T

公开(公告)日：1995-12-15

申请号：AT88109392

申请日：1988-06-13

Applicant: CANON KK

Inventor： TSUBOYAMA AKIRA ,  INABA YUTAKA ,  YOSHIDA AKIO ,  HANYU YUKIO ,  UCHIMI TOSHIHARU ,  YAMASHITA MASATAKA

IPC: C09K19/12 ,  C09K19/20 ,  C09K19/22 ,  C09K19/28 ,  C09K19/30 ,  C09K19/32 ,  C09K19/34 ,  C09K19/46 ,  G02F1/1333 ,  G02F1/141 ,  G02F1/137 ,  C09K19/06

Abstract: A ferroelectric liquid crystal device comprises a pair of opposite electrodes (102a, 102b) and a ferroelectric liquid crystal disposed between the electrodes. At least one of the opposite electrodes (102a, 102b) is coated with an insulating film having a thickness of 200 ANGSTROM or larger. The ferroelectric liquid crystal has a capacitance CLC (nF/cm ) and a spontaneous polarization Ps (nC/cm ) and the insulating film has a capacitance Ci (nF/cm ) satisfying the relationship of Ci(nF/cm ) >/= 2.Ps(nC/cm ) - CLC(nF/cm ).

公开(公告)号：AU8039994A

公开(公告)日：1995-06-22

申请号：AU8039994

申请日：1994-12-13

Applicant: CANON KK

Inventor： KATAKURA KAZUNORI ,  INABA YUTAKA

IPC: G09G3/20 ,  G09G3/36 ,  H01J31/12

Abstract: A display apparatus is constituted by a display device comprising a pair of oppositely disposed substrates having thereon scanning electrodes and data electrodes, respectively, and an optical modulation substance disposed between the substrates so as to form a number of pixels each at an intersection of the scanning electrodes and the data electrodes; and drive means capable of setting one frame period to be divided into different periods of sub-frames. The drive means further includes means for setting a whole picture scanning period for scanning all the scanning electrodes and a partial rewrite period for scanning only scanning electrodes for effecting a required display change so as to allow a partial rewrite in a shorter cycle than a frame cycle.

公开(公告)号：FR2590392B1

公开(公告)日：1994-07-01

申请号：FR8612388

申请日：1986-09-03

Applicant: CANON KK

Inventor： TSUBOYAMA AKIRA ,  INABA YUTAKA ,  KITAYAMA HIROYUKI ,  OKADA SHINJIRO ,  TANIGUCHI OSAMU ,  KAWAGISHI HIDEYUKI ,  HANYU YUKIO

IPC: G02F1/1337 ,  G02F1/141 ,  G09G3/36 ,  G09F9/35 ,  G09G3/18

Abstract: A ferroelectric liquid crystal device comprising a pair of substrates each provided with an electrode thereon, and a ferroelectric liquid crystal layer disposed between the substrates in a thickness which is thin enough to release the spiral structure of the ferroelectric liquid crystal, wherein the ferroelectric liquid crystal provides two average molecular axis directions forming an angle 2 theta therebetween, each average molecular axis direction corresponding to one or two stable orientation states of the ferroelectric liquid crystal, the ferroelectric liquid crystal provides two average molecular axis directions forming an angle 2 &cir& H therebetween when voltages exceeding the threshold voltage of the ferroelectric liquid crystal are applied to the ferroelectric liquid crystal, and the ferroelectric liquid crystal provides two average molecular directions forming an angle 2 theta a therebetween after applying an alternating electric field to the ferroelectric liquid crystal and removing the electric field, the angles theta , &cir& H and theta a satisfying the relationships of: theta

公开(公告)号：ES2044845T3

公开(公告)日：1994-01-16

申请号：ES87102204

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：DE3884479D1

公开(公告)日：1993-11-04

申请号：DE3884479

申请日：1988-07-06

Applicant: CANON KK

Inventor： INABA YUTAKA ,  KAWAGISHI HIDEYUKI ,  KOJIMA MAKOTO ,  KANEKO SHUZO

IPC: G06K15/12 ,  H04N1/195 ,  H04N1/40 ,  H04N1/024 ,  H04N1/38

Abstract: An image forming apparatus includes a light source; an optical shutter unit (11) comprising a pair of parallel substrates respectively having a plurality of scanning electrodes (11a) and a plurality of data electrodes (11b) disposed to intersect with each other to form a matrix electrode structure on their opposite surfaces, and a ferroelectric liquid crystal disposed between the pair of substrates so as to form a microshutter at each intersection of the scanning electrodes and data electrodes; an optical system for forming an image at a desired position with light transmitted through the optical shutter unit; a photosensitive member as a medium for recording the thus formed image; a scanning side drive circuit (12) for applying a scanning voltage signal to the plurality of scanning electrodes (11a) so as to sequentially select at least one scanning electrode in a prescribed cycle; and a data side drive unit (13) for applying data voltage signals to the plurality of data electrodes (11b) in synchronism with said scanning voltage signal. Image data are transferred on the optical shutter unit (11) corresponding to the movement of the photosensitive member so as to move an image formed thereby on the photosensitive member while keeping the relative position of the image with respect to the photosensitive member.

公开(公告)号：AU606456B2

公开(公告)日：1991-02-07

申请号：AU2233888

申请日：1988-09-16

Applicant: CANON KK

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

IPC: G02F1/141 ,  G02F1/13

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：CA1279918C

公开(公告)日：1991-02-05

申请号：CA615537

申请日：1989-10-23

Applicant: CANON KK

Inventor： TSUBOYAMA AKIRA ,  INABA YUTAKA ,  KITAYAMA HIROYUKI

IPC: G02F1/1337 ,  G02F1/133 ,  G02F1/137 ,  G02F1/141 ,  G09G3/18 ,  G09G3/36

Abstract: A ferroelectric liquid crystal device comprising a pair of substrates each provided with an electrode thereon, and a ferroelectric liquid crystal layer disposed between the substrates in a thickness which is thin enough to release the spiral structure of the ferroelectric liquid crystal, wherein the ferroelectric liquid crystal provides two average molecular axis directions forming an angle 2.theta. therebetween, each average molecular axis direction corresponding to one of two stable orientation states of the ferroelectric liquid crystal, the ferroelectric liquid crystal provides two average molecular axis directions forming an angle 2 ? therebetween when voltages exceeding the threshold voltage of the ferroelectric liquid crystal are applied to the ferroelectric liquid crystal, and the ferroelectric liquid crystal provides two average molecular directions forming an angle 2.theta.a therebetween after applying an alternating electric field to the ferroelectric liquid crystal and removing the electric field, the angles .theta., ? and .theta.a satisfying the relationships of: .theta.