Patents by Inventor Hideki Ookawa

Hideki Ookawa 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: 7843128
    Abstract: Disclosed is an organic electroluminescent element, comprising an anode and a cathode, an organic light-emitting layer interposed between the anode and the cathode, and an organic hole transfer layer containing a polymer type organic hole transfer material having a metal oxide of a semiconductor material or a conductive material added thereto.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: November 30, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideki Ookawa, Junichi Tonotani
  • Patent number: 7573193
    Abstract: An optical device includes a first waveguide layer in which multiple-beam interference occurs, a second waveguide layer which includes a back surface facing the first waveguide layer and a front surface as a light output surface, and a diffraction grating which is arranged on a back side of the second waveguide layer and faces the first waveguide layer, wherein a grating constant of the diffraction grating is defined such that a first-order diffracted light emerges from the second waveguide layer, the first-order diffracted light being generated when a light component having a highest intensity of light which propagates in an in-plane direction while causing multiple reflection in the first waveguide layer enters the diffraction grating.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: August 11, 2009
    Assignees: Toshiba Matsushita Display Technology Co., Ltd., Kabushiki Kaisha Toshiba
    Inventors: Satoshi Okutani, Tsuyoshi Uemura, Hirofumi Kubota, Naotada Okada, Junichi Tonotani, Keiji Suzuki, Hideki Ookawa
  • Publication number: 20080007162
    Abstract: Disclosed is an organic electroluminescent element, comprising an anode and a cathode, an organic light-emitting layer interposed between the anode and the cathode, and an organic hole transfer layer containing a polymer type organic hole transfer material having a metal oxide of a semiconductor material or a conductive material added thereto.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 10, 2008
    Inventors: Hideki OOKAWA, Junichi Tonotani
  • Publication number: 20070103064
    Abstract: An electroluminescent display has a transparent substrate. A transparent positive electrode is formed on the transparent substrate. An inert metal film is formed on the transparent positive electrode. A hole transport layer on the inert metal film, includes a conductive polymer doped with a polymeric electrolyte containing a sulfone group. An emissive layer is formed on the hole transport layer.
    Type: Application
    Filed: December 22, 2006
    Publication date: May 10, 2007
    Inventors: Kazuaki Iwasawa, Hideki Ookawa
  • Publication number: 20060232200
    Abstract: Disclosed is an organic electroluminescent element, comprising an anode and a cathode, an organic light-emitting layer interposed between the anode and the cathode, and an organic hole transfer layer containing a polymer type organic hole transfer material having a metal oxide of a semiconductor material or a conductive material added thereto.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 19, 2006
    Inventors: Hideki Ookawa, Junichi Tonotani
  • Publication number: 20060062270
    Abstract: An optical device includes a first waveguide layer in which multiple-beam interference occurs, a second waveguide layer which includes a back surface facing the first waveguide layer and a front surface as a light output surface, and a diffraction grating which is arranged on a back side of the second waveguide layer and faces the first waveguide layer, wherein a grating constant of the diffraction grating is defined such that a first-order diffracted light emerges from the second waveguide layer, the first-order diffracted light being generated when a light component having a highest intensity of light which propagates in an in-plane direction while causing multiple reflection in the first waveguide layer enters the diffraction grating.
    Type: Application
    Filed: November 10, 2005
    Publication date: March 23, 2006
    Inventors: Satoshi Okutani, Tsuyoshi Uemura, Hirofumi Kubota, Naotada Okada, Junichi Tonotani, Keiji Suzuki, Hideki Ookawa
  • Publication number: 20050147922
    Abstract: In a method for exposing a photosensitive resist layer with near-field light, a liquid film layer is provided between the photosensitive resist layer and a photomask. The photomask has a light-shielding film containing an opening portion whose width is smaller than the wavelength of light emitted from a light source. The photosensitive resist layer is exposed with near-field light through the opening portion and the liquid film layer.
    Type: Application
    Filed: March 3, 2005
    Publication date: July 7, 2005
    Inventors: Keiji Suzuki, Hideki Ookawa, Junichi Tonotani
  • Patent number: 6869737
    Abstract: In a method for exposing a photosensitive resist layer with near-field light, a liquid film layer is provided between the photosensitive resist layer and a photomask. The photomask has a light-shielding film containing an opening portion through which a propagated light emitted from a light source cannot pass. The photosensitive resist layer is exposed with near-field light through the opening portion and the liquid film layer.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: March 22, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiji Suzuki, Hideki Ookawa, Junichi Tonotani
  • Publication number: 20050052122
    Abstract: An electroluminescent display has a transparent substrate. A transparent positive electrode is formed on the transparent substrate. An inert metal film is formed on the transparent positive electrode. A hole transport layer on the inert metal film, includes a conductive polymer doped with a polymeric electrolyte containing a sulfone group. An emissive layer is formed on the hole transport layer.
    Type: Application
    Filed: July 21, 2004
    Publication date: March 10, 2005
    Inventors: Kazuaki Iwasawa, Hideki Ookawa
  • Publication number: 20040152323
    Abstract: In a method for exposing a photosensitive resist layer with near-field light, a liquid film layer is provided between the photosensitive resist layer and a photomask. The photomask has a light-shielding film containing an opening portion through which a propagated light emitted from a light source cannot pass. The photosensitive resist layer is exposed with near-field light through the opening portion and the liquid film layer.
    Type: Application
    Filed: February 2, 2004
    Publication date: August 5, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keiji Suzuki, Hideki Ookawa, Junichi Tonotani