Patents by Inventor Tamaki Fukata

Tamaki Fukata 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).

  • Method of making TFT-based pixel structure
    Patent number: 6518081
    Abstract: A reflected light from the edge of a back shield film 3 and an incident light from the edge of a black matrix are blocked by forming a dummy contact hole 7 not reaching the back shield film 3 at least in the interlayer film 4 on the back shield film near the lateral face of the thin film transistor along the longitudinal direction of the channel within the region delimited by the back shield film 3 and the black matrix 12, and forming a film made of at least an interconnection material on the side wall of the dummy contact hole.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: February 11, 2003
    Assignee: NEC Corporation
    Inventors: Tamaki Fukata, Nobuaki Honbo
  • Thin film transistor for use in liquid crystal display device and method for manufacturing the same
    Patent number: 6452241
    Abstract: A pair of lightly doped drain (LDD) regions are provided in a thin film transistor of each pixel of a thin film transistor substrate for a liquid crystal display device and a light shielding portion of a material having reflectivity lower than that of a metal and covering a portion or a whole portion of the LDD regions is provided so as to restrict an internal random reflection of light.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: September 17, 2002
    Assignee: NEC Corporation
    Inventors: Tamaki Fukata, Kenji Sera, Isao Sasaki
  • Liquid crystal display
    Patent number: 6449022
    Abstract: A reflected light from the edge of a back shield film 3 and an incident light from the edge of a black matrix are blocked by forming a dummy contact hole 7 not reaching the back shield film 3 at least in the interlayer film 4 on the back shield film near the lateral face of the thin film transistor along the longitudinal direction of the channel within the region delimited by the back shield film 3 and the black matrix 12, and forming a film made of at least an interconnection material on the side wall of the dummy contact hole.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: September 10, 2002
    Assignee: NEC Corporation
    Inventors: Tamaki Fukata, Nobuaki Honbo
  • Liquid crystal display
    Publication number: 20020089617
    Abstract: A reflected light from the edge of a back shield film 3 and an incident light from the edge of a black matrix are blocked by forming a dummy contact hole 7 not reaching the back shield film 3 at least in the interlayer film 4 on the back shield film near the lateral face of the thin film transistor along the longitudinal direction of the channel within the region delimited by the back shield film 3 and the black matrix 12, and forming a film made of at least an interconnection material on the side wall of the dummy contact hole.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 11, 2002
    Inventors: Tamaki Fukata, Nobuaki Honbo