Patents Examined by Jeanne Andrea Di Grazio
  • Patent number: 6801287
    Abstract: A liquid crystal display device with a pair of substrates with a liquid crystal layer therebetween, a pair of electrodes disposed adjacent to each other in each pixel region of a liquid crystal side surface of one of the pair of substrates, at least one of the pair of electrodes being formed on a protective film comprised of an organic film and is in contact with an orientation film, wherein a film thickness of the orientation film overlying the protective film is greater than a film thickness of the orientation film overlying an electrodes being formed on the protective film.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: October 5, 2004
    Assignee: Hitachi, LTD
    Inventors: Nagatoshi Kurahashi, Yoshiaki Nakayoshi, Kazuhiko Yanagawa
  • Patent number: 6798476
    Abstract: A liquid crystal device has a configuration including substrates 200 and 300 bonded to each other with a sealant 110 and a liquid crystal 160 enclosed in the gap therebetween. Common electrodes 214 are provided on the inner face of the substrate 200, whereas an underlying film 301, a reflective film 302 composed of a silver alloy, a protective film 303 covering the reflective film 302, and segment electrodes 314 are provided on the inner face of the backside substrate 300. Since the protective film 303 suppresses the crystal grain growth of the reflective film 302 at a high-temperature treatment, a decrease in reflectance is avoided. A lead 350 comprises a laminate of a reflective conductive film 352 having a crystal grain size which is larger than that of the reflective film 302 and a transparent conductive film 354 which is formed by patterning the same layer as the segment electrode 314.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: September 28, 2004
    Assignee: Seiko Epson Corporation
    Inventors: Manabu Hanakawa, Shoji Hinata
  • Patent number: 6798483
    Abstract: A floating electrode switching liquid crystal display (FES-LCD). A plurality of liquid crystal molecules held between the first substrate and the second substrate, and the liquid crystal molecules are aligned to a first direction. A plurality of transverse-extending gate lines and lengthwise-extending signal lines formed on the first substrate to define a plurality of pixel areas arranging in a matrix form. A plurality of pixel electrodes and floating electrodes formed on the first substrate, the pixel electrodes and the floating electrodes are positioned within the pixel areas, and being arranged to a second direction. A common electrode layer formed on the second substrate. The pixel electrodes and the floating electrodes are separated in the same plane, and the first direction and the second direction are intersected with an angle &thgr;.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: September 28, 2004
    Assignee: Hannstar Display Corp.
    Inventors: Seok Lyul Lee, Han Jun Park
  • Patent number: 6798484
    Abstract: An in-plane switching mode liquid crystal display (IPS-LCD). A plurality of lengthwise-extending common electrodes are formed in each pixel area, and each common electrode has a curved or zigzag profile. A plurality of lengthwise-extending pixel electrodes are formed in each pixel area, and each pixel electrode has a curved or zigzag profile. The pixel electrodes are disposed in the intervals between the common electrodes, and two adjacent pixel and common electrodes form a subpixel area. Liquid crystal molecules are positioned within each sub-pixel area. The two adjacent pixel electrode and common electrodes within each sub-pixel area are not parallel to each other, and thus a gradient in-plane electric field is generated therebetween.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: September 28, 2004
    Assignee: Hannstar Display Corp.
    Inventors: Kie-Hsiung Yang, Sheng-Hsien Lin
  • Patent number: 6798478
    Abstract: In a method of manufacturing a liquid crystal display apparatus having a liquid crystal layer between a first substrate and a second substrate and having an uneven layer with an uneven shape on a liquid crystal layer side of the first substrate, the uneven layer is formed by a film-forming step of forming a photosensitive resin layer on the first substrate, a first exposure step of exposing the photosensitive resin layer through a mask having a predetermined pattern, a developing step of developing the photosensitive resin layer exposed in the first exposure step, a second exposure step of exposing an entirety of the developed photosensitive resin layer, and a heating step of heating the photosensitive resin exposed in the second exposure step.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 28, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Sadayasu Fujibayashi
  • Patent number: 6795135
    Abstract: A reflective liquid crystal display device including a liquid crystal display and a body case for protecting the display. An auxiliary light source device supplies light to the display. At least one of the body case and the auxiliary light source device includes engaging structure for removably engaging the auxiliary light source device with the body case. Both of the body case and the auxiliary light source device include electric connection structure for electrically connected the body case and the auxiliary light source device.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: September 21, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Jeongmin Moon
  • Patent number: 6788378
    Abstract: A method for forming a spacer of a liquid crystal display panel includes aligning a transcription film on a substrate, selectively performing a thermal imaging on the transcription film to define a spacer forming region, and removing a portion of the transcription film where the thermal imaging is not performed, thereby forming a plurality of spacers on the substrate.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 7, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Jong-Hoon Yi
  • Patent number: 6781643
    Abstract: In an active matrix liquid crystal display device having a thin film transistor array substrate (250) comprising a plurality of scan lines formed on an insulating substrate (100), a plurality of signal lines formed to cross the scan lines, thin film transistors formed near intersections between the scan lines and signal lines, respectively, pixel electrodes connected to one electrodes of the thin film transistors, respectively, and additional capacity portions connected to pixel electrodes (5) connected to source electrodes (4) of the thin film transistors, respectively; in order to provide a higher contrast and to allow driving at a lower voltage, a part of the additional capacity portion is formed, via insulating film (115) and semiconductor (120), between the pixel electrode (5) and that scan line (11) which is connected to a gate electrode (1) of the thin film transistor for switching the pixel electrode (5).
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: August 24, 2004
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Makoto Watanabe, Takahiko Watanabe
  • Patent number: 6781649
    Abstract: A liquid crystal display device includes a first substrate (1) and a second substrate (2) disposed in parallel to each other, a liquid crystal layer (3) disposed between the two substrates (1, 2) and filled with liquid crystal, and an ink retaining layer (7) disposed on a surface (1b) of the first substrate (1) facing the second substrate (2). A surface of the ink retaining layer (7) is provided with plural filter strips (7R, 7G, 7B) each retaining a respective color ink, and each of the filter strips (7R, 7G, 7B) includes plural columns and plural rows of generally circular dots (24) arranged in a strip or rectangle, each of them being provided by a color ink droplet.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: August 24, 2004
    Assignee: Rohm Co., Ltd.
    Inventors: Hisayoshi Fujimoto, Hiroaki Onishi
  • Patent number: 6778248
    Abstract: A flat display apparatus incorporating a first substrate, a second substrate disposed opposite to the first substrate at a position distant from the first substrate for a predetermined distance, a sealing material disposed between the first and second substrates and formed into a frame-like shape to bond the first and second substrates to each other, a light modulation layer held in a gap between the first and second substrates bonded to each other with the sealing material, and spacers secured integrally with at least either of the first and second substrates to maintain the gap, wherein a portion of the spacers is disposed in the sealing-material portion and another portion of the spacers projects from the sealing material.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: August 17, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Ootaguro, Akiko Tanaka, Kazuyoshi Okano
  • Patent number: 6768524
    Abstract: Disclosed is an LCD cushion for a wireless mobile communications terminal, intervened between an LCD and an outer case to resiliently support the LCD against the outer case. The LCD cushion is manufactured by impregnating contractible fibers with a conductive material to prepare functional fabric pieces having shock absorbability and conductivity including a horizontal resistance of no greater than 1.0 &OHgr; and a vertical resistance of no greater than 1.0 &OHgr;, integrally laminating selected functional fabric pieces into 1 to 4 layers having a total thickness of no greater than 1 mm using a conductive sticking agent, and then heat-fusion finishing an upper surface and inner cut edges of the resultant laminated combination.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: July 27, 2004
    Inventor: Sung Suk Ju
  • Patent number: 6765642
    Abstract: An IPS-LCD having a compensation electrode structure. In each pixel area, at least two common electrodes extending in a first Y-direction and at least one pixel electrode extending in a second Y-direction are inter-digitated with each other. Also, at least two compensation electrodes extending in the Y-direction are patterned on the same plane with the pixel electrode, and overlap the two common electrodes, respectively. A first interval between the first compensation electrode and pixel electrode is equal to a second interval between the pixel electrode and the second compensation electrode.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: July 20, 2004
    Assignee: Hannstar Display Corp.
    Inventor: Deuk Su Lee
  • Patent number: 6750939
    Abstract: A liquid crystal micro display (lcmd) is manufactured by creating a hole in an lcmd surface, filling the lcmd with liquid crystal material through the hole, and then sealing the hole. The invention allows an lcmd to be tested before it is separated from other lcmds and packaged. As a result, the invention increases the yield and reduces the cost associated with lcmd manufacturing.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: June 15, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Douglas Sojourner, Ken A. Nishimura, Charles D. Hoke, Barry Bronson
  • Patent number: 6741319
    Abstract: A process for separating substrates in liquid crystal display is disclosed. The process for separating substrates in liquid crystal display includes step of providing a first substrate and a second substrate, wherein the first and second substrates being combined together by seal, forming a scribing line on the first substrate, and separating the first substrate into at least two parts along the scribing line by exerting air pressure upon the second substrate.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: May 25, 2004
    Assignee: Hannstar Display Corp.
    Inventors: Ta-Ko Chuang, Sakae Tanaka
  • Patent number: 6710830
    Abstract: An optical sheet constituted by a retardation film; and a transparent layer provided on one of opposite surfaces of the retardation film. The retardation film exhibits Nz=(nx =nz)/(nx=ny) in a range of from 0.1 to 0.4 and (nx−ny)d in a range of from 200 to 350 nm in which d is a thickness of the retardation film, nz is a refractive index in a direction of a Z axis expressing a direction of the thickness d of the retardation film, nx is a refractive index in a direction of an X axis expressing a direction of the retardation film in a plane perpendicular to the Z axis while the X axis also expresses a direction of the highest in-plane refractive index, and ny is a refractive index in a direction of a Y axis expressing a direction of the retardation film perpendicular both to the is Z axis and to the X axis. The transparent layer has a thickness not larger than 10 &mgr;m and exhibits refractive index anisotropy of nx˜ny>nz.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: March 23, 2004
    Assignee: Nitto Denko Corporation
    Inventors: Shuuji Yano, Yuuichi Nishikouji
  • Patent number: 6710843
    Abstract: An in-line system for fabricating a liquid crystal display includes a sealer coating unit for coating a sealer onto a first substrate with a plurality of liquid crystal display cell regions, a liquid crystal injection unit for dropping a liquid crystal onto the first substrate coated with the sealer, and an assembly unit for assembling the first substrate with the second substrate. A sealer hardening unit hardens the sealer interposed between the first and the second substrate to thereby assemble the first and the second substrate with each other. A substrate cutting unit cuts the first and the second substrates along cutting lines through illuminating a laser beam along the cutting lines such that the first and the second substrates are severed into the liquid crystal display cell regions.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: March 23, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Ho Choo, Sang-Jun Lee, Yong-Joon Kwon