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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.
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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.
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公开(公告)号：GB2261741B
公开(公告)日：1996-01-03
申请号：GB9223310
申请日：1992-11-06
Applicant: CANON KK
Inventor： ASAOKA MASANOBU , TAKAO HIDEAKI , TOGANO TAKESHI , KOJIMA MAKOTO
IPC: C08G73/10 , G02F1/1337
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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
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.
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公开(公告)号：GB2261741A
公开(公告)日：1993-05-26
申请号：GB9223310
申请日：1992-11-06
Applicant: CANON KK
Inventor： ASAOKA MASANOBU , TAKAO HIDEAKI , TOGANO TAKESHI , KOJIMA MAKOTO
IPC: C08G73/10 , G02F1/1337
Abstract: A liquid crystal device is constituted by a pair of substrates and a ferroelectric liquid crystal disposed between the substrates. At least one of the pair of substrates has thereon an alignment film of a polyimide having a recurring unit of the following formula (I): wherein R1 denotes a tetravalent organic residue; and X1 - X8 independently denote an alkyl group having 1 - 15 carbon atoms. an alkoxy group having 1 - 15 carbon atoms, CF3 group. halogen or hydrogen atom with the proviso that at least one X1 - X4 is not hydrogen atom and at least one of X5 - X8 is not hydrogen atom.
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Patent Agency Ranking
公开(公告)号：DE69232178T2
公开(公告)日：2002-06-06
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 ).
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公开(公告)号：AT216090T
公开(公告)日：2002-04-15
申请号：AT95305356
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.
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公开(公告)号：DE69230786D1
公开(公告)日：2000-04-20
申请号：DE69230786
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 ).
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公开(公告)号：DE69221812D1
公开(公告)日：1997-10-02
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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公开(公告)号：DE19514374A1
公开(公告)日：1995-10-26
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 , C08L79/08 , C08L77/06
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.
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