公开(公告)号：DE69232177T2

公开(公告)日：2002-06-06

申请号：DE69232177

申请日：1992-12-10

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ONUMA KENJI ,  HOTTA YOSHIO ,  TANIGUCHI OSAMU ,  TAKAO HIDEAKI ,  ASAOKA MASANOBU ,  MIHARA TADASHI ,  KODERA YASUTO ,  KOJIMA MAKOTO ,  NAKAMURA KATSUTOSHI ,  WADA TAKATSUGU

IPC: B82B1/00 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of substrates each being provided with an electrode for driving a liquid crystal and disposed opposite to each other. Each of the substrates further has on the electrode at least one layer of an alignment control film subjected to an uniaxial aligning treatment. For suppressing a liquid crystal movement, said alignment film is formed on an uneven surface having a surface unevenness providing a difference in height of at most 50 nm (500 ANGSTROM ) and an average pitch of unevenness of at most 100 nm (1000 ANGSTROM ).

公开(公告)号：DE69232178D1

公开(公告)日：2001-12-06

申请号：DE69232178

申请日：1992-12-10

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ONUMA KENJI ,  HOTTA YOSHIO ,  TANIGUCHI OSAMU ,  TAKAO HIDEAKI ,  ASAOKA MASANOBU ,  MIHARA TADASHI ,  KODERA YASUTO ,  KOJIMA MAKOTO ,  NAKAMURA KATSUTOSHI ,  WADA TAKATSUGU

IPC: B82B1/00 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of substrates each being provided with an electrode for driving a liquid crystal and disposed opposite to each other. Each of the substrates further has on the electrode at least one layer of an alignment control film subjected to an uniaxial aligning treatment. For suppressing a liquid crystal movement, said alignment film is formed on an uneven surface having a surface unevenness providing a difference in height of at most 50 nm (500 ANGSTROM ) and an average pitch of unevenness of at most 100 nm (1000 ANGSTROM ).

公开(公告)号：AT208054T

公开(公告)日：2001-11-15

申请号：AT95118451

申请日：1992-12-10

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ONUMA KENJI ,  HOTTA YOSHIO ,  TANIGUCHI OSAMU ,  TAKAO HIDEAKI ,  ASAOKA MASANOBU ,  MIHARA TADASHI ,  KODERA YASUTO ,  KOJIMA MAKOTO ,  NAKAMURA KATSUTOSHI ,  WADA TAKATSUGU

IPC: B82B1/00 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of substrates each being provided with an electrode for driving a liquid crystal and disposed opposite to each other. Each of the substrates further has on the electrode at least one layer of an alignment control film subjected to an uniaxial aligning treatment. For suppressing a liquid crystal movement, said alignment film is formed on an uneven surface having a surface unevenness providing a difference in height of at most 50 nm (500 ANGSTROM ) and an average pitch of unevenness of at most 100 nm (1000 ANGSTROM ).

公开(公告)号：DE69131258T2

公开(公告)日：2000-03-02

申请号：DE69131258

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.

公开(公告)号：DE69127569T2

公开(公告)日：1998-02-26

申请号：DE69127569

申请日：1991-04-02

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ASAOKA MASANOBU

IPC: C08G73/10 ,  G02F1/1337

Abstract: A ferroelectric liquid crystal device and apparatus having a pair of substrates with orientation control films of a fluorine-containing aliphatic polyimide or a fluorine-containing alicyclic polyimide. The fluorine-containing aliphatic polyimide or alicyclic polyimide has a structural unit expressed by the following general formula [I]: wherein R1 is a tetravalent organic residue and R2 is a divalent organic residue, at least one of R1 and R2 being an alicyclic or aliphatic organic residue containing fluorine and n is 0 or 1.

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.

公开(公告)号：AT158091T

公开(公告)日：1997-09-15

申请号：AT91105152

申请日：1991-04-02

Applicant: CANON KK

Inventor： HANYU YUKIO ,  ASAOKA MASANOBU

IPC: C08G73/10 ,  G02F1/1337

Abstract: A ferroelectric liquid crystal device and apparatus having a pair of substrates with orientation control films of a fluorine-containing aliphatic polyimide or a fluorine-containing alicyclic polyimide. The fluorine-containing aliphatic polyimide or alicyclic polyimide has a structural unit expressed by the following general formula [I]: wherein R1 is a tetravalent organic residue and R2 is a divalent organic residue, at least one of R1 and R2 being an alicyclic or aliphatic organic residue containing fluorine and n is 0 or 1.

公开(公告)号：DE69219493D1

公开(公告)日：1997-06-12

申请号：DE69219493

申请日：1992-02-07

Applicant: CANON KK

Inventor： TOGANO TAKESHI ,  TAKIGUCHI TAKAO ,  TAKAO HIDEAKI ,  HANYU YUKIO ,  ASAOKA MASANOBU ,  IWAKI TAKASHI

IPC: G02F1/133 ,  C08G73/10 ,  G02F1/1337

Abstract: A liquid crystal device is formed by applying an alignment film on at least one of a pair of substrates sandwiching a liquid crystal, preferably a chiral smectic liquid crystal. The alignment is formed by a dehydro-cyclization product of a polyamide acid which in turn is a reaction product of naphthalenetetracarboxylic acid or its derivative with a diamine or its derivative. The liquid crystal device provides a high contrast display, particularly by multiplexing drive, which is free from after-image because of quick responsiveness.

公开(公告)号：DE19514374C2

公开(公告)日：1997-05-28

申请号：DE19514374

申请日：1995-04-18

Applicant: CANON KK

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

IPC: G02F1/1337 ,  G02F1/141

Abstract: A liquid crystal device is constituted by a pair of substrates each having an electrode thereon and disposed in parallel with each other, and a liquid crystal disposed between the substrates. At least one of the substrates has thereon an organic alignment film formed from at least one species of polymer including a polymer having an average molecular weight of at most 30,000.

公开(公告)号：GB2264713B

公开(公告)日：1996-09-25

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 ,  C08G69/02 ,  C09K19/56

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; Formula (1): wherein R1 and R2 independently denote an alkyl group or a fluoroalkyl group having 1-10 carbon atoms; Formula (2): Formula (3): wherein +E,crc/A/ and +E,crc/B/ respectively denote a tetravalent or divalent organic residue comprising an aromatic ring, aromatic polycyclic ring or condensed polycyclic ring.