Patents by Inventor Takako Adachi

Takako Adachi 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: 7782288
    Abstract: The liquid crystal display apparatus of the present invention includes: a liquid crystal panel having a liquid crystal layer and an electrode for applying a voltage to the liquid crystal layer; and a drive circuit for supplying a drive voltage to the liquid crystal panel. The drive circuit supplies a drive voltage obtained by giving an overshoot to a gray-scale voltage corresponding to an input image signal in the current vertical period, the drive voltage being determined in advance according to a combination of an input image signal in the immediately-preceding vertical period processed based on a predicted value of the transmittance of the liquid crystal panel in the immediately-preceding vertical period and the input image signal in the current vertical period.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: August 24, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Adachi, Makoto Shiomi
  • Patent number: 7777765
    Abstract: A liquid crystal display device, including (a) a liquid crystal panel for carrying out display by voltage application to pixels, each of which has a liquid crystal layer, and (b) a driving circuit for applying, within one frame time, (i) voltages that respectively correspond with image signals and (ii) a voltage that corresponds with a clear command signal, to the pixels of said liquid crystal panel, is arranged such that said driving circuit includes a combination detector circuit for generating, by looking up an OS parameter table, corrected image signals according to combination of first image signals for a preceding frame time and second image signals for a present frame time, the corrected image signals thus generated causing liquid crystal orientation in the pixels to be transited from initial orientation of the present frame time to orientation indicated by the second image signals.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: August 17, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Adachi, Makoto Shiomi
  • Publication number: 20070222731
    Abstract: The liquid crystal display apparatus of the present invention includes: a liquid crystal panel having a liquid crystal layer and an electrode for applying a voltage to the liquid crystal layer; and a drive circuit for supplying a drive voltage to the liquid crystal panel. The drive circuit supplies a drive voltage obtained by giving an overshoot to a gray-scale voltage corresponding to an input image signal in the current vertical period, the drive voltage being determined in advance according to a combination of an input image signal in the immediately-preceding vertical period processed based on a predicted value of the transmittance of the liquid crystal panel in the immediately-preceding vertical period and the input image signal in the current vertical period.
    Type: Application
    Filed: May 17, 2007
    Publication date: September 27, 2007
    Inventors: Takako Adachi, Makoto Shiomi
  • Patent number: 7239298
    Abstract: The liquid crystal display apparatus of the present invention includes: a liquid crystal panel having a liquid crystal layer and an electrode for applying a voltage to the liquid crystal layer; and a drive circuit for supplying a drive voltage to the liquid crystal panel. The drive circuit supplies a drive voltage obtained by giving an overshoot to a gray-scale voltage corresponding to an input image signal in the current vertical period, the drive voltage being determined in advance according to a combination of an input image signal in the immediately-preceding vertical period processed based on a predicted value of the transmittance of the liquid crystal panel in the immediately-preceding vertical period and the input image signal in the current vertical period.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: July 3, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Adachi, Makoto Shiomi
  • Patent number: 7084846
    Abstract: A liquid crystal (LC) display device includes a LC panel and a driving circuit. The LC panel exhibits, in its voltage-transmittance characteristics, an extreme transmittance at a voltage equal to or lower than a lowest gray-level voltage. The driving circuit supplies to the LC panel a predetermined driving voltage overshooting a gray-level voltage corresponding to an input image signal of a current vertical period, according to a combination of an input image signal of an immediately preceding vertical period and the input image signal of the current vertical period.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: August 1, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Adachi, Makoto Shiomi
  • Publication number: 20050200619
    Abstract: A liquid crystal display device, including (a) a liquid crystal panel for carrying out display by voltage application to pixels, each of which has a liquid crystal layer, and (b) a driving circuit for applying, within one frame time, (i) voltages that respectively correspond with image signals and (ii) a voltage that corresponds with a clear command signal, to the pixels of said liquid crystal panel, is arranged such that said driving circuit includes a combination detector circuit for generating, by looking up an OS parameter table, corrected image signals according to combination of first image signals for a preceding frame time and second image signals for a present frame time, the corrected image signals thus generated causing liquid crystal orientation in the pixels to be transited from initial orientation of the present frame time to orientation indicated by the second image signals.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 15, 2005
    Inventors: Takako Adachi, Makoto Shiomi
  • Publication number: 20040125064
    Abstract: The liquid crystal display apparatus of the present invention includes: a liquid crystal panel having a liquid crystal layer and an electrode for applying a voltage to the liquid crystal layer; and a drive circuit for supplying a drive voltage to the liquid crystal panel. The drive circuit supplies a drive voltage obtained by giving an overshoot to a gray-scale voltage corresponding to an input image signal in the current vertical period, the drive voltage being determined in advance according to a combination of an input image signal in the immediately-preceding vertical period processed based on a predicted value of the transmittance of the liquid crystal panel in the immediately-preceding vertical period and the input image signal in the current vertical period.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 1, 2004
    Inventors: Takako Adachi, Makoto Shiomi
  • Patent number: 6731356
    Abstract: A liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer provided between the substrates, wherein liquid crystal molecules in the liquid crystal layer have a negative dielectric anisotropy, and the liquid crystal molecules are aligned in a direction substantially vertical to the substrates when no voltage is being applied and are axis-symmetrically aligned in each of a plurality of pixel regions under application of a voltage.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: May 4, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuaki Yamada, Fumikazu Shimoshikiryo, Yasuhiro Kume, Shuichi Kozaki, Takako Adachi, Shinichi Terashita, Takashi Kurihara
  • Publication number: 20040017343
    Abstract: A liquid crystal (LC) display device includes a LC panel and a driving circuit. The LC panel exhibits, in its voltage-transmittance characteristics, an extreme transmittance at a voltage equal to or lower than a lowest gray-level voltage. The driving circuit supplies to the LC panel a predetermined driving voltage overshooting a gray-level voltage corresponding to an input image signal of a current vertical period, according to a combination of an input image signal of an immediately preceding vertical period and the input image signal of the current vertical period.
    Type: Application
    Filed: July 18, 2003
    Publication date: January 29, 2004
    Inventors: Takako Adachi, Makoto Shiomi
  • Publication number: 20020097362
    Abstract: A liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer provided between the substrates, wherein liquid crystal molecules in the liquid crystal layer have a negative dielectric anisotropy, and the liquid crystal molecules are aligned in a direction substantially vertical to the substrates when no voltage is being applied and are axis-symmetrically aligned in each of a plurality of pixel regions under application of a voltage.
    Type: Application
    Filed: December 21, 2001
    Publication date: July 25, 2002
    Applicant: Sharp Kabushiki Kaishi
    Inventors: Nobuaki Yamada, Fumikazu Shimoshikiryo, Yasuhiro Kume, Shuichi Kozaki, Takako Adachi, Shinichi Terashita, Takashi Kurihara
  • Patent number: 6344883
    Abstract: A liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer provided between the substrates, wherein liquid crystal molecules in the liquid crystal layer have a negative dielectric anisotropy, and the liquid crystal molecules are aligned in a direction substantially vertical to the substrates when no voltage is being applied and are axis-symmetrically aligned in each of a plurality of pixel regions under application of a voltage.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: February 5, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nobuaki Yamada, Fumikazu Shimoshikiryo, Yasuhiro Kume, Shuichi Kozaki, Takako Adachi, Shinichi Terashita, Takashi Kurihara
  • Patent number: 6330048
    Abstract: A liquid crystal display device is provided, in which a liquid crystal layer made of liquid crystal having negative dielectric anisotropy is provided in a gap between a pair of substrates each having an electrode, wall-shaped convex portions are provided so as to surround display pixels on at least one of the substrates, a homeotropic alignment film is provided on a surface of each of the substrates contacting the liquid crystal layer, liquid crystal molecules in the liquid crystal layer are aligned substantially in a direction perpendicular to the pair of substrates when a voltage is not applied, and the liquid crystal molecules are axially symmetrically aligned in each of the display pixels formed by opposing portions of the electrodes when a voltage is applied. In this device, the gap between the substrates is maintained by spacers dispersed on one of the substrates after the alignment film is formed, and the number of spacers in each of the display pixels is zero or one.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: December 11, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Makoto Shiomi, Takako Adachi
  • Publication number: 20010038369
    Abstract: A liquid crystal (LC) display device includes a LC panel and a driving circuit. The LC panel exhibits, in its voltage-transmittance characteristics, an extreme transmittance at a voltage equal to or lower than a lowest gray-level voltage. The driving circuit supplies to the LC panel a predetermined driving voltage overshooting a gray-level voltage corresponding to an input image signal of a current vertical period, according to a combination of an input image signal of an immediately preceding vertical period and the input image signal of the current vertical period.
    Type: Application
    Filed: March 28, 2001
    Publication date: November 8, 2001
    Inventors: Takako Adachi, Makoto Shiomi
  • Publication number: 20010006410
    Abstract: A liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer provided between the substrates, wherein liquid crystal molecules in the liquid crystal layer have a negative dielectric anisotropy, and the liquid crystal molecules are aligned in a direction substantially vertical to the substrates when no voltage is being applied and are axis-symmetrically aligned in each of a plurality of pixel regions under application of a voltage.
    Type: Application
    Filed: December 12, 1997
    Publication date: July 5, 2001
    Inventors: NOBUAKI YAMADA, FUMIKAZU SHIMOSHIKIRYO, YASUHIRO KUME, SHUICHI KOZAKI, TAKAKO ADACHI, SHINICHI TERASHITA, TAKASHI KURIHARA
  • Patent number: 5850273
    Abstract: A liquid crystal display device includes: a first substrate; a second substrate; a liquid crystal layer interposed between the first and the second substrates; a plurality of electrodes for applying a voltage to the liquid crystal layer; a first alignment film provided on a surface of the first substrate in contact with the liquid crystal layer; a second alignment film provided on a surface of the second substrate in contact with the liquid crystal layer; and a plurality of pixels. The liquid crystal layer in each of the pixels includes first and second liquid crystal regions, liquid crystal molecules in the first and the second liquid crystal regions have an identical twisting direction.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: December 15, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shin-Ichi Terashita, Nobuaki Yamada, Takako Adachi, Akihiro Nammatsu, Seiji Makino, Shigeaki Mizushima