公开(公告)号：DE69627118D1

公开(公告)日：2003-05-08

申请号：DE69627118

申请日：1996-12-23

Applicant: CANON KK

Inventor： NAKAMURA KATSUTOSHI ,  KOJIMA MAKOTO ,  SUNAGA MASAKI

IPC: G02F1/1341 ,  G02F1/141

Abstract: A liquid crystal device is produced through the steps of: a) disposing a pair of substrates opposite to each other so as to form a cell between the substrates while leaving a first aperture and a second aperture for communication with an exterior and forming an effective optical modulation region between the first and second apertures, b) heating a liquid crystal material for filling the cell, and c) filling the cell with the liquid crystal material by injecting the liquid crystal material through the first aperture under a pressure difference held between the first and second apertures and, after a prescribed period, allowing the liquid crystal material to be discharged out of the second aperture. In the step c), the first aperture, the second aperture and the effective optical modulation region of the cell may preferably receive external pressures P1, P2 and P3, respectively, satisfying P1 > P2 and -1 kg.f/cm .

公开(公告)号：DE69232177D1

公开(公告)日：2001-12-06

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：AT190734T

公开(公告)日：2000-04-15

申请号：AT92121073

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：DE69410890D1

公开(公告)日：1998-07-16

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

公开(公告)号：AU681973B2

公开(公告)日：1997-09-11

申请号：AU2837495

申请日：1995-08-03

Applicant: CANON KK

Inventor： KANEKO SHUZO ,  GOFUKU IHACHIRO ,  KISHI ETSURO ,  KOJIMA 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.

公开(公告)号：DE69526291D1

公开(公告)日：2002-05-16

申请号：DE69526291

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.

公开(公告)号：DE69320073T2

公开(公告)日：1999-02-25

申请号：DE69320073

申请日：1993-01-22

Applicant: CANON KK

Inventor： HANYU YUKIO ,  TSUBOYAMA AKIRA ,  TANIGUCHI OSAMU ,  MIHARA TADASHI ,  NAKAMURA KATSUTOSHI ,  MORI SUNAO

IPC: G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: A ferroelectric liquid crystal device is constituted by disposing a ferroelectric liquid crystal between a pair of substrates having thereon electrodes for voltage application and provided with uniaxial alignment axes, as by rubbing, so as to provide a high pretilt angle of at least 10 degrees. A problematic liquid crystal movement in such a high-pretilt angle ferroelectric liquid crystal device is suppressed by improving a smectic layer structure therein, inclusive of a symmetry of pretilt angles at the pair of substrate boundary surfaces. Such an improved smectic layer structure is accomplished by a realigning treatment after cooling to the chiral smectic phase or in the final stage of the cooling to the chiral smectic phase as by application of an AC electric field and/or by repetitive heating-cooling in the chiral smectic phase. The improved smectic layer structure is represented by, e.g., an X-ray diffraction peak having an increased peak area and/or a decreased half-value width.

公开(公告)号：DE69320073D1

公开(公告)日：1998-09-10

申请号：DE69320073

申请日：1993-01-22

Applicant: CANON KK

Inventor： HANYU YUKIO ,  TSUBOYAMA AKIRA ,  TANIGUCHI OSAMU ,  MIHARA TADASHI ,  NAKAMURA KATSUTOSHI ,  MORI SUNAO

IPC: G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: A ferroelectric liquid crystal device is constituted by disposing a ferroelectric liquid crystal between a pair of substrates having thereon electrodes for voltage application and provided with uniaxial alignment axes, as by rubbing, so as to provide a high pretilt angle of at least 10 degrees. A problematic liquid crystal movement in such a high-pretilt angle ferroelectric liquid crystal device is suppressed by improving a smectic layer structure therein, inclusive of a symmetry of pretilt angles at the pair of substrate boundary surfaces. Such an improved smectic layer structure is accomplished by a realigning treatment after cooling to the chiral smectic phase or in the final stage of the cooling to the chiral smectic phase as by application of an AC electric field and/or by repetitive heating-cooling in the chiral smectic phase. The improved smectic layer structure is represented by, e.g., an X-ray diffraction peak having an increased peak area and/or a decreased half-value width.

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 ).

公开(公告)号：DE69522494T2

公开(公告)日：2002-04-25

申请号：DE69522494

申请日：1995-04-12

Applicant: CANON KK

Inventor： SATO KOICHI ,  KITAYAMA HIROYUKI ,  SHINJO KENJI ,  NAKAMURA SHINICHI ,  NAKAMURA KATSUTOSHI

IPC: C09K19/04 ,  C09K19/34 ,  C09K19/42 ,  C09K19/58 ,  G02F1/1337

Abstract: A liquid crystal composition includes at least one fluorine-containing mesomorphic compound (a) having a fluorocarbon terminal portion and a hydrocarbon terminal portion, and at least one optically active compound (b) having an optically active cyclic group and a terminal alkyl group free from a perfluorocarbon atom. The compound (a) and the compound (b) are mutually soluble readily to form a homogeneous liquid crystal composition. The liquid crystal composition shows 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.