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公开(公告)号：AU2837495A
公开(公告)日：1996-02-15
申请号：AU2837495
申请日：1995-08-03
Applicant: CANON KK
Inventor： KANEKO SHUZO , GOFUKU IHACHIRO , KISHI ETSURO , KAJIMA MAKOTO , NAKAMURA KATSUTOSHI
IPC: G02F1/1333 , G02F1/1337 , G02F1/141 , G02F1/136
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：AU7449094A
公开(公告)日：1995-05-11
申请号：AU7449094
申请日：1994-10-07
Applicant: CANON KK
Inventor： NAKAMURA KATSUTOSHI , KANEKO SHUZO , KISHI ETSURO , MIYATA HIROKATSU , SHIBATA MASAAKI
IPC: G02F1/1337 , G02F1/141 , G02F1/137
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公开(公告)号：DE69331962T2
公开(公告)日：2002-11-07
申请号：DE69331962
申请日：1993-01-28
Applicant: CANON KK
Inventor： NAKAMURA KATSUTOSHI , HANYU YUKIO
IPC: G02F1/1337 , G02F1/141 , G02F1/137
Abstract: A ferroelectric liquid crystal device is constituted by a pair of substrates disposed parallel to each other and each having on its inner surface an electrode, an insulating film and an alignment control film, and a ferroelectric liquid crystal disposed between the substrates. The alignment control films on the pair of substrates are provided with uniaxial alignment axes in directions which are substantially parallel and opposite to each other. The ferroelectric liquid crystal is placed in an alignment state showing a pretilt angle alpha of 5 degrees
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公开(公告)号：AT218216T
公开(公告)日：2002-06-15
申请号：AT93101339
申请日：1993-01-28
Applicant: CANON KK
Inventor： NAKAMURA KATSUTOSHI , HANYU YUKIO
IPC: G02F1/1337 , G02F1/141 , G02F1/137
Abstract: A ferroelectric liquid crystal device is constituted by a pair of substrates disposed parallel to each other and each having on its inner surface an electrode, an insulating film and an alignment control film, and a ferroelectric liquid crystal disposed between the substrates. The alignment control films on the pair of substrates are provided with uniaxial alignment axes in directions which are substantially parallel and opposite to each other. The ferroelectric liquid crystal is placed in an alignment state showing a pretilt angle alpha of 5 degrees
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公开(公告)号：AT208055T
公开(公告)日：2001-11-15
申请号：AT95118452
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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Patent Agency Ranking
公开(公告)号：DE69519120T2
公开(公告)日：2001-05-17
申请号：DE69519120
申请日：1995-04-12
Applicant: CANON KK
Inventor： SATO KOICHI , KITAYAMA HIROYUKI , SHINJO KENJI , NAKAMURA KATSUTOSHI , NAKAMURA SHINICHI
Abstract: A liquid crystal composition includes a liquid crystal containing at least one mesomorphic compound having a cholesteric phase (Ch phase)-free mesomorphic phase, and at least one compound (e) having a limit of solubility in the liquid crystal and being contained in the composition in a proportion ranging from 20 % of the limit of solubility to below the limit of solubility. The liquid crystal composition may preferably include the liquid crystal containing at least one fluorine-containing mesomorphic compound (a) having a fluorocarbon terminal portion and a hydrocarbon terminal portion, and at least one achiral compound (b), a the compound (e), having a specific ring structure and a specific terminal alkyl group free from a perfluorocarbon atom. The compound having a Ch phase-free mesomorphic phase, preferably the compound (a), and the compound (e), preferably the compound (b) are effective in providing the liquid crystal composition with a layer structure of so-called bookshelf or a layer structure having a small inclination angle (closer to bookshelf structure). The liquid crystal composition is useful in improving response characteristics and display characteristics, particularly a contrast ratio, of a liquid crystal device using the liquid crystal composition.
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公开(公告)号：DE69519120D1
公开(公告)日：2000-11-23
申请号：DE69519120
申请日：1995-04-12
Applicant: CANON KK
Inventor： SATO KOICHI , KITAYAMA HIROYUKI , SHINJO KENJI , NAKAMURA KATSUTOSHI , NAKAMURA SHINICHI
Abstract: A liquid crystal composition includes a liquid crystal containing at least one mesomorphic compound having a cholesteric phase (Ch phase)-free mesomorphic phase, and at least one compound (e) having a limit of solubility in the liquid crystal and being contained in the composition in a proportion ranging from 20 % of the limit of solubility to below the limit of solubility. The liquid crystal composition may preferably include the liquid crystal containing at least one fluorine-containing mesomorphic compound (a) having a fluorocarbon terminal portion and a hydrocarbon terminal portion, and at least one achiral compound (b), a the compound (e), having a specific ring structure and a specific terminal alkyl group free from a perfluorocarbon atom. The compound having a Ch phase-free mesomorphic phase, preferably the compound (a), and the compound (e), preferably the compound (b) are effective in providing the liquid crystal composition with a layer structure of so-called bookshelf or a layer structure having a small inclination angle (closer to bookshelf structure). The liquid crystal composition is useful in improving response characteristics and display characteristics, particularly a contrast ratio, of a liquid crystal device using the liquid crystal composition.
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公开(公告)号：DE69230786T2
公开(公告)日：2000-08-03
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：DE69227714T2
公开(公告)日：1999-06-10
申请号：DE69227714
申请日：1992-03-20
Applicant: CANON KK
Inventor： KODERA YASUTO , HOTTA YOSHIO , HANYU YUKIO , NAKAMURA KATSUTOSHI
IPC: G02F1/13 , G02F1/1337 , G02F1/1341 , G02F1/137 , G02F1/141
Abstract: There is disclosed a ferroelectric liquid crystal device in which a pair of substrates and having electrodes are arranged so that the electrode surfaces face each other, a sealing agent is provided in the peripheral edge portions of the substrates, a liquid crystal injection port is opened in a part of the sealing agent, and a liquid crystal is injected from the injection port into a gap between both of the substrates. An intersection angle which is formed by the rubbing direction to orient the liquid crystal and the direction to inject the liquid crystal from the injection port lies within a range from -45 DEG to +45 DEG .
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公开(公告)号：DE69410890T2
公开(公告)日：1998-12-17
申请号：DE69410890
申请日：1994-08-02
Applicant: CANON KK
Inventor： HANYU YUKIO , NAKAMURA KATSUTOSHI , ITO NOBUHIRO
IPC: G02F1/1337 , C09K19/02 , G02F1/141 , G02F1/137
Abstract: A chiral smectic liquid crystal device with a good planar homogeneity in a layer normal direction can be constituted by disposing a chiral smectic liquid crystal having no cholesteric phase between a pair of substrates having mutually different characters, particularly in terms of Iso - SmA phase transition temperature. The liquid crystal may preferably have a layer spacing-changing characteristic such that it provides a layer spacing dA at a first transition point where the layer spacing of the liquid crystal begins to decrease on temperature decrease in the vicinity of a transition temperature from SmA phase to SmC* phase and a layer spacing dmin at a second transition point where the layer spacing of the liquid crystal begins to increase on further temperature decrease from the first transition point, satisfying 0.96
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