公开(公告)号：JPH01223417A

公开(公告)日：1989-09-06

申请号：JP4864088

申请日：1988-03-03

Applicant: CANON KK

Inventor： KOJIMA MAKOTO ,  KAWAGISHI HIDEYUKI ,  INABA YUTAKA

IPC: G02F1/1335 ,  G02F1/133 ,  G02F1/1337

Abstract: PURPOSE:To improve the appearance by setting the direction in which virtual tilt angles in the center wavelength of each filter color of color filters are averaged, as the average molecule axial direction of a liquid crystal cell and setting a polarizer, based on said direction as a reference. CONSTITUTION:When values of virtual tilt angles in the center wavelength of spectral transmittivity of color filters R, G and B are averaged, its result becomes -thetaa=6.8 deg.. Therefore, the direction of -thetaa is set to the direction which is inclined by 6.8 deg. against the rubbing direction of an FLC cell. Simultaneously, an analyzer 21 is set to the direction which is shifted by 90 deg. against a polarizer 23. In such constitution, when the light source of a daylight color type whose wavelength characteristic is comparatively continuous is used as a backlight 24, and the appearance of the cell is observed, a satisfactory result can be obtained.

公开(公告)号：JP2000309734A

公开(公告)日：2000-11-07

申请号：JP2000016529

申请日：2000-01-26

Applicant: CANON KK

Inventor： TOMITA YASUKO ,  FURUSE TAKASHI ,  KOJIMA MAKOTO

IPC: H01J9/02 ,  B41J2/01 ,  B41M5/00 ,  C09D11/00 ,  H01L51/00 ,  H01L51/40 ,  H05B33/10

Abstract: PROBLEM TO BE SOLVED: To prepare stably and with excellent reproducibility an electroconductive film with little unevenness in shape using an ink jet method and to provide an electron-emitting element having excellent electron-emitting characteristics, an electron source having many highly uniform and good electron-emitting elements arranged and further an image-forming apparatus exhibiting highly uniform and good display quality. SOLUTION: There is provided a process for preparing an electron emitting element comprising a step for providing a solvent containing nitrogen as a main solvent and a liquid containing a metal element or a semi-conductive element so as to connect a pair of electrodes 2, 3 arranged on a substrate 1, a step for forming an electroconductive film 4 by heating the substrate provided with the liquid and a step for forming an electron-emitting part 5 by applying voltage between the pair of electrodes.

公开(公告)号：JPH11190836A

公开(公告)日：1999-07-13

申请号：JP35825597

申请日：1997-12-25

Applicant: CANON KK

Inventor： MUNAKATA HIROHIDE ,  KOJIMA MAKOTO ,  HACHISU TAKAHIRO ,  OKADA SHINJIRO

IPC: G02F1/13 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/141

Abstract: PROBLEM TO BE SOLVED: To reduce local shrinkage and deformation of an insulating layer by suppressing oxidation, etc., of the insulating layer accompanying heating. SOLUTION: To manufacture a liquid crystal panel P, a metal electrode 5b and an insulating layer 6b are formed on the top surface of a glass substrate 3b and a flat surface is fold of them. Then baking is carried out when an orientation control films 7b is formed and an oven into which nitrogen gas is introduced to less than 98 oxygen density is used for the baking. Consequently, the oxidation of the insulating layer 6b accompanying the baking is suppressed to suppress its local shrinkage and deformation. Consequently, the drivable pulse width range (M2 margin) of the liquid crystal panel P is improved and the liquid crystal panel P has excellent driving characteristics.

公开(公告)号：JPH10282500A

公开(公告)日：1998-10-23

申请号：JP9111997

申请日：1997-04-09

Applicant: CANON KK

Inventor： MUNAKATA HIROHIDE ,  KODERA YASUHITO ,  KOJIMA MAKOTO

IPC: G02F1/1337 ,  C09K19/02 ,  G02F1/13

Abstract: PROBLEM TO BE SOLVED: To obtain a liquid crystal element of excellent display definition by making the normal direction of a smectic layer at a chiral smectic phase substantially vertical in the long side direction of one pixel so as to prevent the deterioration of a contrast ratio with the generation of a driving detective domain. SOLUTION: At the time of using a liquid crystal showing a chiral smectic phase, the driving defective domain 16 responding to the period of an information signal generated at the boundary part between a display driving area 10 and a driving impossible area 12 is generated in a vertical direction with respect to a layer normal direction (the normal direction of the smectic layer) in particular. Then, a rubbing direction is made nearly vertical to the long side of a pixel 11 to make the layer normal direction of the chiral smectic phase nearly vertical to the long side direction of the pixel 11 to suppress influence to the display driving area 10 of the domain 16. Consequently, a driving defective part can be concentrated to the short side of the side of the area existing between electrodes to reduce the area of the driving defective part in proportion to the aspect ratio of a pixel 11.

公开(公告)号：JPH08146447A

公开(公告)日：1996-06-07

申请号：JP29133894

申请日：1994-11-25

Applicant: CANON KK

Inventor： KOJIMA MAKOTO ,  ITO YASUHIRO

IPC: G02F1/1333 ,  G02F1/1343

Abstract: PURPOSE: To prevent displacement of metal electrodes during laminating substrates and to make a uniform cell gap. CONSTITUTION: A hard part 26 is disposed on the back (lower side) of each metal electrode 7 and the metal electrode 7 is held by the hard part 26. Therefore, when the pressing force on the glass substrate 11 concentrates through the spacer 13 to the metal electrode 7 during laminating the substrates, the hard part 26 does not deform and as a result, the metal electrode 7 does not cause displacement to the glass substrate 2 side. Thereby, deformation of the transparent electrode 6 due to displacement of metal electrode 7 can be prevented and the cell gap is made uniform. Thereby, the electric field during driving an liquid crystal display element is equal for all electrodes, which makes the threshold voltage to drive the liquid crystal equal. Thus, the effective operational voltage range is increased and proper display characteristics are obtd.

公开(公告)号：JPH07253580A

公开(公告)日：1995-10-03

申请号：JP818995

申请日：1995-01-23

Applicant: CANON KK

Inventor： MIHARA TADASHI ,  KODERA YASUTO ,  AOYAMA KAZUHIRO ,  MORI SUNAO ,  MIURA SEISHI ,  SATO FUMIYOSHI ,  SAITO MASAMICHI ,  TAKAO HIDEAKI ,  KOJIMA MAKOTO ,  ASAOKA MASANOBU

IPC: G02F1/1337

Abstract: PURPOSE:To provide a liquid crystal element which hardly generates a fluctuation of a cell thickness with simple constitution and a device formed by using this element. CONSTITUTION:This liquid crystal element has substrates 11a, 11b which have a pair of electrodes 12a, 12b facing each other and a chiral smectic liquid crystal 15 which is disposed between a pair of these electrodes and exhibits a state of bistable states. The inside surfaces of the substrates 11a, 11b are so subjected to orientation treatments that the moving direction when the one state of the bistable states is placed under an electric field is the same direction as the moving direction when the other state is placed under the electric field. The orientation treatment of a frame region 32 is varied from the orientation treatment of a display region 31. The same effect is obtd. by improving driving conditions, the oriented films of the frame region and the orientation treatment method.

公开(公告)号：JPH06202100A

公开(公告)日：1994-07-22

申请号：JP28064093

申请日：1993-10-15

Applicant: CANON KK

Inventor： OKADA SHINJIRO ,  KATAKURA KAZUNORI ,  INABA YUTAKA ,  KOJIMA MAKOTO

IPC: G02F1/133 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To obtain good color characteristics and gradation characteristics by a ferroelectric liquid crystal by changing an electrode area or color filter area according to cell thicknesses. CONSTITUTION:An electrode 41, an insulating film 42 and an oriented film 43 are formed as flat surfaces on one substrate 45 of a pair of the substrates 45, 45'. On the other hand, electrodes 41' are formed for respective picture elements on a member 40 having a slope on the other substrate 45' and the surface thereof is covered with an oriented film 43'. The electrode 41 on the substrate is common to the two picture elements. The cell thickness gradient is such that the cell thickness changes continuously toward the surface of the substrate from d1 to d2 and the area ratio at the respective cell thicknesses d1, (d1

公开(公告)号：JPH06180452A

公开(公告)日：1994-06-28

申请号：JP35291692

申请日：1992-12-14

Applicant: CANON KK

Inventor： KOJIMA MAKOTO ,  ASAOKA MASANOBU ,  TAKAO HIDEAKI ,  TOKANOU GOUJI

IPC: C08G61/12 ,  C08G61/10 ,  C09K19/02 ,  G02F1/1337

Abstract: PURPOSE:To form a film by low temp. calcination, to obtain a large tilt angle theta, and to provide a liquid crystal device by which high contrast images can be displayed. CONSTITUTION:This liquid crystal device consists of a pair of parallel substrates having transparent electrodes, an oriented film on at least one substrate, and a ferroelectiric liquid crystal inserted between the substrates. The oriented film consists of polypyrol expressed by formula. In formula, R1 and R2 are CkH2k+1 or CF3(CF2)L(CH2)m and at least one of them is CF3(CF2)L(CH2)m, and 5

公开(公告)号：JPH06102516A

公开(公告)日：1994-04-15

申请号：JP27357692

申请日：1992-09-18

Applicant: CANON KK

Inventor： ASAOKA MASANOBU ,  TAKAO HIDEAKI ,  TOKANOU GOUJI ,  KOJIMA MAKOTO

IPC: G02F1/1337

Abstract: PURPOSE:To obtain a high-grade display with excellent productivity, a high contrast in a bright state and a dark state and a high display contrast particularly at the time of multiplexing without requiring a high-temp. treatment at the time of forming oriented films and to obviate the generation of unslightly after- images. CONSTITUTION:This liquid crystal element constituted by clamping a ferroelectric liquid crystal 15 between a pair of parallel substrates 11a and 11b formed with transparent electrodes 12a, 12b and having the polyamide oriented film 14a, 14b on at least one substrate. The polyamide oriented films 14a, 14b consist of polyamide films consisting of at least >=2 kinds of the dicarboxylic acid components expressed by formula I (where R1 denotes a bivalent org. residue having an arom. ring) and the diamine components expressed by formula II (where R2, R3 denote different 1 to 10C alkyl groups and may be the same or different. At least one kind of the dicarboxylic acid components have a linear molecular structure.

公开(公告)号：JPH06102514A

公开(公告)日：1994-04-15

申请号：JP27357592

申请日：1992-09-18

Applicant: CANON KK

Inventor： ASAOKA MASANOBU ,  KOJIMA MAKOTO ,  TOKANOU GOUJI ,  TAKAO HIDEAKI

IPC: G02F1/1337

Abstract: PURPOSE:To stably provide a display which generates a large tilt angle and with which high-contrast images are displayed uniformly with a wide area without generating after-images. CONSTITUTION:This liquid crystal element is constituted by having uniaxially oriented films 14a, 14b on a pair of substrates 11a, 11b provided with transparent electrodes 12a, 12b and clamping a ferroelectric liquid crystal 15 between the substrates. These oriented films 14a, 14b consist of the high-polymer films contg. the diamine component expressed by formula and the difference in the contact angle in the case of dropping of alpha-bromonaphthalene before and after the orientation treatment is >=10deg. (In the formula, R1, R2 denote 1 to 10C alkyl group, where R1, R2 may be the same or different.)