Patents by Inventor Masayuki Katagami

Masayuki Katagami 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: 8698995
    Abstract: The present invention provides a liquid crystal display panel provided with a laminate spacer including a plurality of primary color filters which can avoid deterioration of the display quality and improve the production efficiency. The liquid crystal display panel of the present invention comprises: an array substrate provided with a first electrode; a color filter substrate provided with a second electrode; and a liquid crystal layer sandwiched between the array substrate and the color filter substrate, wherein the color filter substrate further includes: four or more differently colored transparent layers, the colors of which include red, green, blue, and at least one of yellow and white; and a laminate spacer formed by the second electrode and at least two layers among the four or more differently colored transparent layers, and the laminate spacer is surrounded by the yellow or white transparent layer when viewed in a plan view.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: April 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehisa Yoshida, Masayuki Katagami, Atsushi Ban
  • Publication number: 20120293567
    Abstract: The present invention provides a display device having color display dots with improved brightness and being excellent in visibility. The display device of the present invention comprises a pixel including an odd number of and at least three first sub pixels; and second sub pixels having a higher brightness than the first sub pixels, wherein units of the odd number of first sub pixels are repeatedly arranged, the second sub pixels are sequentially arranged along the arrangement direction of the first sub pixels, and the second sub pixels and at least one of the first sub pixels are alternately arranged in a direction perpendicular to the arrangement direction of the first sub pixels.
    Type: Application
    Filed: October 26, 2010
    Publication date: November 22, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masayuki Katagami, Atsushi Ban, Toshihide Tsubata, Takehisa Yoshida
  • Publication number: 20120249610
    Abstract: In the present display device with each pixel being composed of subpixels of four or more colors, a backlight data processing portion sets a backlight source luminance to be high enough to compensate for a display luminance reduction caused by a maximum luminance adjustment portion (332) multiplying input pixel data for G by an adjustment gain, such that the value of the input pixel data for G does not exceed the maximum pixel value, after a G correction portion (331) corrects the input pixel data for G to compensate for a display luminance reduction due to the area of (subpixel) G being half of others. Thus, it is possible to realize high color reproducibility and a high luminance as realized by conventional liquid crystal display devices with a three-color, RGB, pixel configuration.
    Type: Application
    Filed: May 19, 2010
    Publication date: October 4, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Masayuki Katagami, Atsushi Ban, Toshihide Tsubata, Takehisa Yoshida
  • Publication number: 20120188494
    Abstract: The present invention provides a liquid crystal display panel provided with a laminate spacer including a plurality of primary color filters which can avoid deterioration of the display quality and improve the production efficiency. The liquid crystal display panel of the present invention comprises: an array substrate provided with a first electrode; a color filter substrate provided with a second electrode; and a liquid crystal layer sandwiched between the array substrate and the color filter substrate, wherein the color filter substrate further includes: four or more differently colored transparent layers, the colors of which include red, green, blue, and at least one of yellow and white; and a laminate spacer formed by the second electrode and at least two layers among the four or more differently colored transparent layers, and the laminate spacer is surrounded by the yellow or white transparent layer when viewed in a plan view.
    Type: Application
    Filed: June 18, 2010
    Publication date: July 26, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takehisa Yoshida, Masayuki Katagami, Atsushi Ban