Patents by Inventor Masatoshi Takizawa

Masatoshi Takizawa 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).

  • Thin-film EL device and composite substrate
    Patent number: 6819044
    Abstract: A thin-film EL device includes a lower electrode layer, a barrier layer containing a conductive inorganic compound, a lower insulating layer, a light emitting layer, and an upper electrode layer stacked in order on an electrically insulating substrate. An EL device of high display quality is established at a low cost by acquiring satisfactory light emitting properties without using an expensive high-melting point noble metal in the lower electrode layer and without increasing the thickness of the lower electrode layer, even when the lower insulating layer contains a lead base dielectric material.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: November 16, 2004
    Assignee: TDK Corporation
    Inventors: Yukihiko Shirakawa, Masatoshi Takizawa, Minoru Ookoba, Shirou Ootsuki
  • Thin-film EL device and composite substrate
    Publication number: 20030193289
    Abstract: A thin-film EL device includes a lower electrode layer, a barrier layer containing a conductive inorganic compound, a lower insulating layer, a light emitting layer, and an upper electrode layer stacked in order on an electrically insulating substrate. An EL device of high display quality is established at a low cost by acquiring satisfactory light emitting properties without using an expensive high-melting point noble metal in the lower electrode layer and without increasing the thickness of the lower electrode layer, even when the lower insulating layer contains a lead base dielectric material.
    Type: Application
    Filed: April 9, 2003
    Publication date: October 16, 2003
    Applicant: TDK CORPORATION
    Inventors: Yukihiko Shirakawa, Masatoshi Takizawa, Minoru Ookoba, Shirou Ootsuki