公开(公告)号：HK1085801A1

公开(公告)日：2006-09-01

申请号：HK06107987

申请日：2006-07-17

Applicant: CASIO COMPUTER CO LTD

Inventor： MIZUSAKO RYOTA ,  YAMAGUCHI MINORU ,  NAKAJIMA YASUSHI

IPC: G02F20090101

Abstract: A liquid crystal display device comprises a TFT substrate where TFTs are formed, an opposing substrate (CF substrate), a liquid crystal with a negative dielectric anisotropy filled between both substrates, a pixel electrode, and an auxiliary electrode formed around the pixel electrode. The pixel electrode has a recess portion formed by etching a gate insulation film. The liquid crystal molecules are aligned tilted toward the center of a pixel according to the shape of the recess portion.

公开(公告)号：HK1092227A1

公开(公告)日：2007-02-02

申请号：HK06112642

申请日：2006-11-17

Applicant: CASIO COMPUTER CO LTD

Inventor： YAMAGUCHI MINORU ,  NAKAJIMA YASUSHI ,  MIZUSAKO RYOTA

IPC: G02F20100101 ,  H01L20100101

Abstract: A liquid crystal display device has an opposing substrate on which an opposing electrode is formed, a TFT substrate on which pixel electrodes arranged in matrix, thin film transistors connected to the pixel electrodes respectively, and gate lines and data lines for the thin film transistors are formed, vertical alignment films formed on the opposing inner surfaces of these substrates, and a liquid crystal layer disposed between the vertical alignment films and having negative dielectric anisotropy. Each pixel electrode has a slit formed for separating each pixel into a plurality of sub-pixels by partially eliminating the pixel electrode with a connecting portion left at which adjoining electrode portions of each pixel electrode is connected with each other. The width W1 of the pixel electrode that runs in a direction in which the slit is formed and width W2 of the connecting portion have a ratio W2/W1 of 0.13 or lower.

公开(公告)号：JP2002182218A

公开(公告)日：2002-06-26

申请号：JP2000375459

申请日：2000-12-11

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI ,  NAITO HIDEO ,  TADA KAZUYUKI

IPC: G02F1/137 ,  G02F1/1337 ,  G02F1/139

Abstract: PROBLEM TO BE SOLVED: To produce a liquid crystal display element which provides a highly defined display without the disclination of liquid crystal molecules with a high yield. SOLUTION: The method is for manufacturing the liquid crystal display element by cementing a pair of substrates while oppositely placing the space of alignment layers and enclosing liquid crystal between the pair of substrates. After enclosing the liquid crystal between the pair of substrates, the substrates are heated to a temperature at which the liquid crystal has a isotropic phase. Then, the whole liquid crystal layer is cooled uniformly and at high speed by blowing cold air or soaking them in cold water. Thereby, various kinds of domain disclination states unstable in energy can be realigned to a normal alignment, and the liquid crystal display element which provides a uniform and highly defined display without a so-called domain alignment defect can be produced with a high yield.

公开(公告)号：JP2001154214A

公开(公告)日：2001-06-08

申请号：JP34031299

申请日：1999-11-30

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G09F9/30 ,  G02F1/1343

Abstract: PROBLEM TO BE SOLVED: To provide a device which can be driven to display by small electric power as a liquid crystal display device of an in-plane switching mode which displays by the lateral electric field. SOLUTION: In the device, segment electrodes 3 and common electrodes 4 are formed corresponding to a plurality of pixel regions A on the inner face of one substrate 2 in such a manner that at least two of the electrodes 3 and at least one of the other electrode 4 are alternately arranged along at least one direction of the pixel region A. Thus, the distance between the electrodes 3, 4 is decreased so that an electric field with sufficient intensity can be obtained even when driving voltage applied between the electrodes 3, 4 is low and that the aligned direction of liquid crystal molecules near the substrate 2 where the segment electrodes 3 and common electrodes 4 are formed can be changed.

公开(公告)号：JPH10148830A

公开(公告)日：1998-06-02

申请号：JP30816996

申请日：1996-11-19

Applicant: CASIO COMPUTER CO LTD

Inventor： KAWABATA KUNIHARU ,  NAKAJIMA YASUSHI

IPC: G02F1/1337

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for production of a liquid crystal display element capable of subjecting the surface of an oriented film to an adequate orientation treatment with high accuracy while uniformly maintaining the contact pressure of a rubbing roller with this film surface and the apparatus for production of the liquid crystal display element capable of joining a pair of substrates superposed on each other by uniformly pressurizing the entire part of these substrates and uniformly holding the gap width between both substrates with the high accuracy free from variations. SOLUTION: This apparatus is provided with posture control elements 7 for controlling the vertically inclined postures of the rubbing roller 5 with respect to horizontal and is provided with a pressure sensor 9 for detecting the pressure distribution at the time of contact of the rubbing roller 5 with the oriented film of the substrate A on a substrate stage 1 in accordance with the rubbing roller 5 descends. The surface of the oriented film is rubbed while the vertically inclined postures of the rubbing roller 5 with respect to horizontal is successively controlled by these posture control elements 7 in accordance with the data of the pressure distribution detected by this pressure sensor 9.

公开(公告)号：JPH09311349A

公开(公告)日：1997-12-02

申请号：JP12847696

申请日：1996-05-23

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02B5/00 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1368

Abstract: PROBLEM TO BE SOLVED: To display a quality picture in which a defect due to a discrimination is not present by providing a lacked part facing to the outside of an edge part of the upstream side of the orientation processing direction of an oriented film being on the peripheral part in peripheral parts of pixel electrodes on a counter electrode to prevent the oblique electric field of the neighborhood of the edge part of the pixel electrode form being generated. SOLUTION: A lacked part 18a in which an area facing to an oriented film being on the peripheral part in peripheral parts of respective pixel electrodes provide on the inner surface of a rear side substrate 1, in short, the edge part of the up-stream side of the orientation processing direction of the oriented film 15 provided on the rear side substrate 1 and its outer peripheral part is lacked is provided in a counter electrode 18 to be provided on the color filter 17 formed on the inner surface of a front side substrate 2. It is desirable that the lacked part 18a of the counter electrode 18 is formed to be a wide width wider than at least the width of the area between the signal line 11 of the upstream side of the orientation processing in signal lines 11 of both sides of the pixel electrode 3 and the edge part of the pixel electrode 3. When the laked part 18a of the counter electrode 18 is formed to be the wide width in such a way, the oblique electric field is prevented from being generated more effectively.

公开(公告)号：JPH09160007A

公开(公告)日：1997-06-20

申请号：JP32312695

申请日：1995-12-12

Applicant: CASIO COMPUTER CO LTD

Inventor： AOKI HISASHI ,  NAKAJIMA YASUSHI

IPC: G02F1/1339 ,  G02F1/1333 ,  G02F1/136 ,  G02F1/1368

Abstract: PROBLEM TO BE SOLVED: To obtain a clear picture without causing defects such as uneven display non being impaired in appearance of display due to seams. SOLUTION: This device is provided with plural small thin-film transistor(TR) panels 2 and a large opposite panel 1. The panels 2 are mutually seamed on the same plane and superposed to the surface of the panel 1 and a joining material 15 for a seal is formed on the peripheral edge part of the combined body of the seamed panels 2 and the opposite panel 1 like a frame. Joining materials 16 for supports are formed between the mutual seams of the panels 2 and the panel 1, respective panels 2 and the panel 1 are joined by these joining materials 15, 16 and liquid crystal is enclosed in a gap between respective panels 2 and the panel 1 formed on the inside of the joining materials 15.

公开(公告)号：JPH0497223A

公开(公告)日：1992-03-30

申请号：JP21184290

申请日：1990-08-10

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/1333 ,  G09F9/35

Abstract: PURPOSE:To allow high-speed response by using the film of a composite material which is formed by mixing a chief material with a material mixture composed of liquid crystal materials mixed with a hardener and in which the liquid crystal materials coexist at >=50% in the state of being connected with each other in the high-polymer materials. CONSTITUTION:The composite material 6 is formed as the film which is formed by mixing the chief material with the material mixture composed of the liquid crystal materials 8 mixed with the hardener and in which the liquid crystal materials 8 coexist at >=50% in the state of being connected with each other in the high-polymer materials 7. Namely, the liquid crystal materials 8 coexist at >=50% in the state of being connected with each other in the high-polymer materials 7 and, therefore, the composite material 6 can array the liquid crystal materials 8 with a low voltage of about 10v as the voltage to be impressed to transparent electrodes 3, 4 facing each other. The fast response speed is obtd. in this way and the need for using polarizing plates is eliminated. The bright display is thus obtd.

公开(公告)号：JP2002196355A

公开(公告)日：2002-07-12

申请号：JP2000398522

申请日：2000-12-27

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI ,  KATO YOSHIHISA

IPC: G02F1/1345 ,  G02F1/1343 ,  G02F1/1368 ,  G09F9/30

Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of display irregularity, deterioration in contrast, burning and corrosion of electrodes or the like caused by ionic impurities in a liquid crystal display device. SOLUTION: Frame shaped ionic impurity absorbing electrode 31 is provided outside a display region 5 so that the electrode 31 opposes a common electrode provided under a common substrate 2 inside seal material 3 formed region on an active matrix substrate 1. A common voltage is applied to the common electrode and a d.c. voltage which is offset approximately one to two volts in a positive or a negative direction with respect to the common voltage, is applied to the electrode 31. Then, longitudinal electric field corresponding to the difference between the voltages is generated between the electrode 31 and the common electrode and ionic impurities in a liquid crystal 4 are suctionally fixed to the electrode 31.

公开(公告)号：JP2001075073A

公开(公告)日：2001-03-23

申请号：JP25030099

申请日：1999-09-03

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/133

Abstract: PROBLEM TO BE SOLVED: To obtain a wide viewing angle without changing the structure of a liquid crystal display device by displaying an image with synthesized viewing angle characteristics of the display having the viewing angle characteristics at a first driving voltage and the display with viewing angle characteristics at a second voltage. SOLUTION: By alternately switching a first driving voltage V1 and a second driving voltage V2 for every field, the display changes between the alignment state to give the transmittance according to the image data and the alignment state to give different viewing angle characteristics from the viewing angle characteristics by the first driving voltage V1. Therefore, the image can be displayed with synthesized viewing angle characteristics of the display having the viewing angle characteristics by the first driving voltage V1 and the display having the viewing angle characteristics by the second voltage. By this method for driving, the apparent viewing angle of the liquid crystal display device is increased by the synthesis of the viewing angle at the first driving voltage V1 applied and the viewing angle at the second driving voltage V2 applied.