Patents by Inventor Hiromi Fukumori

Hiromi Fukumori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7652739
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: January 26, 2010
    Assignee: Sony Corporation
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Patent number: 7453544
    Abstract: A liquid crystal display device having a high quality able to prevent deterioration etc. of a liquid crystal panel even when a liquid crystal panel used in a light valve of a projector etc. is operated under a high temperature and high humidity environment and a projection type display apparatus using the liquid crystal display device, wherein a liquid crystal layer 16 is sandwiched between a pair of substrates formed by bonding a TFT array substrate 11 and a counter substrate 12 by a sealing material 15 so that they face each other across a predetermined gap, the sealing material 15 contains a nonconductive filler having a mean particle size of less than 0.5 ?m, a liquid crystal material used in the liquid crystal layer 16 is set in its refractive index anisotropy an at room temperature to 0.16 or more, and a cell gap d of an interval between the TFT array substrate 11 and the counter substrate 12 is set at 3 ?m or less.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: November 18, 2008
    Assignee: Sony Corporation
    Inventors: Akiko Toriyama, Hisashi Kadota, Makoto Hashimoto, Hirohide Fukumoto, Hiromi Fukumori
  • Publication number: 20070121053
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Application
    Filed: October 30, 2006
    Publication date: May 31, 2007
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Publication number: 20070121050
    Abstract: A liquid crystal display device having a high quality able to prevent deterioration etc. of a liquid crystal panel even when a liquid crystal panel used in a light valve of a projector etc. is operated under a high temperature and high humidity environment and a projection type display apparatus using the liquid crystal display device, wherein a liquid crystal layer 16 is sandwiched between a pair of substrates formed by bonding a TFT array substrate 11 and a counter substrate 12 by a sealing material 15 so that they face each other across a predetermined gap, the sealing material 15 contains a nonconductive filler having a mean particle size of less than 0.5 ?m, a liquid crystal material used in the liquid crystal layer 16 is set in its refractive index anisotropy ?n at room temperature to 0.16 or more, and a cell gap d of an interval between the TFT array substrate 11 and the counter substrate 12 is set at 3 ?m or less.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 31, 2007
    Applicant: Sony Corporation
    Inventors: Akiko Toriyama, Hisashi Kadota, Makoto Hashimoto, Hirohide Fukumoto, Hiromi Fukumori
  • Patent number: 7130014
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: October 31, 2006
    Assignee: Sony Corporation
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Patent number: 7092059
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: August 15, 2006
    Assignee: Sony Corporation
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Publication number: 20050200783
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Application
    Filed: January 27, 2005
    Publication date: September 15, 2005
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Publication number: 20050134778
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Application
    Filed: January 27, 2005
    Publication date: June 23, 2005
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Patent number: 6597425
    Abstract: There is provided a liquid crystal display device in which film thickness irregularities and rubbing irregularities of orientation films are minimized in which superior image quality is provided even when columnar spacers are disposed therein. The liquid crystal display device has a structure in which a liquid crystal substance is sandwiched between a pair of substrates facing each other with the space therebetween controlled to a specific value by a plurality of the columnar spacers independent from each other, wherein the placement density of the columnar spacers is 100 to 2000/mm2, and the sectional area of the columnar spacers is 1 to 100 &mgr;m2.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: July 22, 2003
    Assignee: Sony Corporation
    Inventors: Hisashi Kadota, Hirohide Fukumoto, Hiromi Fukumori
  • Patent number: 6573967
    Abstract: A liquid crystal display apparatus has a drive substrate and a facing electrode substrate superimposed and joined each other via spacers and seal materials, wherein the drive substrate carries drive devices for driving liquid crystal material, the facing electrode substrate carries facing electrodes facing to the drive devices. Liquid crystal material is injected between the drive substrate and the facing electrode substrate. The seal materials include an outer seal formed along outer periphery of the drive substrate and the facing electrode substrate and inner seals formed inside of the outer seal, and a space between the out side part of an effective picture element area having drive devices and an inside portion of the outer seal facing to the effective picture element area or an inside portion of the inner seal can be formed in approximately uniform.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 3, 2003
    Assignee: Sony Corporation
    Inventors: Hiromi Fukumori, Hirohide Fukumoto, Kouichi Taniguchi, Syuichi Shima
  • Publication number: 20030011733
    Abstract: A matrix-addressed type liquid crystal display apparatus having switching devices such as TFTs is provided, featuring that an increased effective voltage can be applied without causing hysteresis in V-T characteristics. Namely, by substantially increasing a value of an applicable voltage in excess of which a display defect starts to appear, a high numerical aperture and a high contrast ratio have been achieved at the same time. In the LCD apparatus of the present invention, a gap between adjacent reverse tilt domains each formed in a portion of a pixel which is arranged corresponding to an arbitrary pixel electrode becomes broader than a minimum gap between adjacent pixel electrodes corresponding thereto, or a thickness of a liquid crystal cell in the portion between adjacent reverse tilt domains is set thinner than a thickness of a liquid crystal cell in the portion of the pixel.
    Type: Application
    Filed: September 6, 2002
    Publication date: January 16, 2003
    Inventors: Hisanori Tsuboi, Fumiaki Abe, Katsuhide Uchino, Kazuhiro Noda, Hideshi Sugita, Tadahiro Hagita, Hiromi Fukumori, Syuichi Shima, Kikuo Kaise
  • Publication number: 20020085165
    Abstract: A method of forming a liquid crystal alignment film able to prevent uneven drying of a liquid crystal alignment film and thereby prevent alignment defects of the liquid crystal and reduce the defect rate of liquid crystal display devices, including the steps of dissolving a polymer material (preferably a polyimide) in a solvent comprised of a polar main solvent (preferably &ggr;-butyrolactone or N-methyl-&agr;-pyrrolidone) plus about 5 to 15 wt % of butyl &bgr;-hydroxyethyl ether as a leveling agent and coating the solution on a substrate; pre-baking the substrate to volatilize at least part of the mixed solvent; and baking the substrate at a higher temperature than pre-baking to polymerize the polymer material, and a method of producing a liquid crystal display device including the above steps.
    Type: Application
    Filed: August 9, 2001
    Publication date: July 4, 2002
    Inventors: Hirohide Fukumoto, Hiromi Fukumori, Shuichi Shima
  • Publication number: 20020003599
    Abstract: There is provided a liquid crystal display device in which film thickness irregularities and rubbing irregularities of orientation films are minimized in which superior image quality is provided even when columnar spacers are disposed therein. The liquid crystal display device has a structure in which a liquid crystal substance is sandwiched between a pair of substrates facing each other with the space therebetween controlled to a specific value by a plurality of the columnar spacers independent from each other, wherein the placement density of the columnar spacers is 100 to 2000/mm2, and the sectional area of the columnar spacers is 1 to 100 &mgr;m2.
    Type: Application
    Filed: May 3, 2001
    Publication date: January 10, 2002
    Inventors: Hisashi Kadota, Hirohide Fukumoto, Hiromi Fukumori
  • Publication number: 20010004278
    Abstract: A liquid crystal display apparatus has a drive substrate and a facing electrode substrate superimposed and joined each other via spacers and seal materials, wherein the drive substrate carries drive devices for driving liquid crystal material, the facing electrode substrate carries facing electrodes facing to the drive devices. Liquid crystal material is injected between the drive substrate and the facing electrode substrate. The seal materials include an outer seal formed along outer periphery of the drive substrate and the facing electrode substrate and inner seals formed inside of the outer seal, and a space between the out side part of an effective picture element area having drive devices and an inside portion of the outer seal facing to the effective picture element area or an inside portion of the inner seal can be formed in approximately uniform.
    Type: Application
    Filed: December 8, 2000
    Publication date: June 21, 2001
    Applicant: Sony Corporation
    Inventors: Hiromi Fukumori, Hirohide Fukumoto, Kouichi Taniguchi, Syuichi Shima