Patents by Inventor Setoguchi Hiroshi

Setoguchi Hiroshi 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).

  • Plasma display and method of producing phosphor used therein
    Patent number: 7423368
    Abstract: The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of a plasma display panel (PDP). The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (110R, 110G, 110B) in color corresponding to each discharge cell are disposed, and phosphor layers (110R, 110G, 110B) are excited by ultraviolet light to emit light. Green phosphor layer (110G) has a green phosphor including Zn2SiO4:Mn, the element ratio of zinc (Zn) to silicon (Si) at the proximity of its surface is 2/1, which is the stoichiometric ratio, and the layer is positively charged or zero-charged.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: September 9, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuichiro Miyamae, Masaki Aoki, Kazuhiko Sugimoto, Keiji Horikawa, Junichi Hibino, Tanaka Yoshinori, Setoguchi Hiroshi
  • Plasma display and method of producing phosphor used therein
    Patent number: 7261917
    Abstract: The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of the PDP. The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (110R, 110G, 110B) in color corresponding to each discharge cell are allocated, and phosphor layers (110R, 110G, 110B) are excited by ultraviolet light to emit light. Green phosphor layer (110G) has a green phosphor including Zn2SiO4:Mn, the element ratio of zinc (Zn) to silicon (Si) is 2/1 to 2.09/1 at least at the proximity of the surface, and the layer is positively charged or zero-charged.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: August 28, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keiji Horikawa, Masaki Aoki, Kazuhiko Sugimoto, Yuichiro Miyamae, Junichi Hibino, Tanaka Yoshinori, Setoguchi Hiroshi
  • Plasma display and method for producing phosphor used therein
    Publication number: 20060072301
    Abstract: The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of a PDP. The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (110R, 110G, 110B) in color corresponding to each discharge cell are disposed, and phosphor layers (110R, 110G, 110B) are excited by ultraviolet light to emit light. Green phosphor layer (110G) has a green phosphor including Zn2SiO4:Mn, the element ratio of zinc (Zn) to silicon (Si) at the proximity of its surface is 2/1, which is the stoichiometric ratio, and the layer is positively charged or zero-charged.
    Type: Application
    Filed: September 24, 2004
    Publication date: April 6, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuichiro Miyamae, Masaki Aoki, Kazuhiko Sugimoto, Keiji Horikawa, Junichi Hibino, Tanaka Yoshinori, Setoguchi Hiroshi
  • Plasma display and method of producing phosphor used therein
    Publication number: 20060071588
    Abstract: The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of the PDP. The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (110R, 110G, 110B) in color corresponding to each discharge cell are allocated, and phosphor layers (110R, 110G, 110B) are excited by ultraviolet light to emit light. Green phosphor layer (110G) has a green phosphor including Zn2SiO4:Mn, the element ratio of zinc (Zn) to silicon (Si) is 2/1 to 2.09/1 at least at the proximity of the surface, and the layer is positively charged or zero-charged.
    Type: Application
    Filed: September 24, 2004
    Publication date: April 6, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keiji Horikawa, Masaki Aoki, Kazuhiko Sugimoto, Yuichiro Miyamae, Junichi Hibino, Tanaka Yoshinori, Setoguchi Hiroshi