Patents by Inventor Tatsuya Sasaoka

Tatsuya Sasaoka 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: 7710025
    Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: May 4, 2010
    Assignee: Sony Corporation
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
  • Publication number: 20070228943
    Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 4, 2007
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
  • Patent number: 7218049
    Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: May 15, 2007
    Assignee: Sony Corporation
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
  • Patent number: 7102282
    Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?(2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: September 5, 2006
    Assignee: Sony Corporation
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
  • Publication number: 20060175966
    Abstract: In an organic EL device having a first electrode of a light reflective material, organic layer including an organic light emitting layer, semitransparent reflection layer, and second electrode of a transparent material that are stacked sequentially, and so configured that the organic layer functions as a cavity portion of a cavity structure, light that resonates in a certain spectral width (wavelength ?) is extracted by so configuring that optical path length L becomes minimum in a range satisfying (2L)/?+?((2?)=m (m is an integer) where the phase shift produced in light generated in the organic light emitting layer when reflected by opposite ends of the cavity portion is ? radians, L is optical path length of the cavity portion, and ? is the peak wavelength of the spectrum of part of light to be extracted.
    Type: Application
    Filed: April 19, 2006
    Publication date: August 10, 2006
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Takashi Hirano
  • Patent number: 6991506
    Abstract: An active-matrix-type display apparatus ensuring sufficient luminous intensity of display devices within a display plane and allowing improved display properties is provided. Such display apparatus having of a plurality of pixels comprises a lower electrode formed on a substrate; organic layers formed on the lower electrode; and an upper common electrode formed on the organic layers; in which a plurality of the pixels are partitioned by a rib larger in the thickness than the organic layers and having at least a conductive material layer; and the conductive material layer is electrically connected to the upper common electrode.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: January 31, 2006
    Assignee: Sony Corporation
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Yasuhiro Chiba, Takashi Hirano, Yuichi Iwase
  • Patent number: 6971938
    Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: December 6, 2005
    Assignee: Sony Corporation
    Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
  • Patent number: 6969948
    Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: November 29, 2005
    Assignee: Sony Corporation
    Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
  • Patent number: 6969291
    Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 29, 2005
    Assignee: Sony Corporation
    Inventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
  • Publication number: 20040147200
    Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 29, 2004
    Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
  • Publication number: 20040090175
    Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the windings through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.
    Type: Application
    Filed: June 30, 2003
    Publication date: May 13, 2004
    Inventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
  • Publication number: 20030201708
    Abstract: An active-matrix-type display apparatus ensuring sufficient luminous intensity of display devices within a display plane and allowing improved display properties is provided. Such display apparatus having of a plurality of pixels comprises a lower electrode formed on a substrate; organic layers formed on the lower electrode; and an upper common electrode formed on the organic layers; in which a plurality of the pixels are partitioned by a rib larger in the thickness than the organic layers and having at least a conductive material layer; and the conductive material layer is electrically connected to the upper common electrode.
    Type: Application
    Filed: December 23, 2002
    Publication date: October 30, 2003
    Inventors: Jiro Yamada, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Yasuhiro Chiba, Takashi Hirano, Yuichi Iwase
  • Patent number: 6614174
    Abstract: A display apparatus includes a substrate, a plurality of pixels formed on the substrate, and a barrier plate for separating adjoining pixels from each other. Each pixel includes a lower layer portion having wiring formed on the substrate, an upper layer portion having an organic electro-luminescent element, and a middle layer portion for insulating the lower layer portion and the upper layer portion from each other electrically. The organic electro-luminescent element is connected with the wiring through a contact hole formed in the middle layer portion. The barrier plate is disposed in the upper layer portion so as to overlap with a region including a contact hole not suitable for forming the organic electro-luminescent element.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: September 2, 2003
    Assignee: Sony Corporation
    Inventors: Tetsuo Urabe, Tatsuya Sasaoka, Mitsunobu Sekiya, Machio Yamagishi
  • Publication number: 20030107314
    Abstract: The invention provides a display of a type of getting light out of a second electrode side, capable of increasing contrast by suppressing external light reflection, simplifying a manufacturing process, and reducing cost, and a method of manufacturing the same. A substrate for driving is provided with organic electroluminescence (EL) devices for getting light out of a cathode side. A red filter, a green filter, and a blue filter are formed on a substrate for sealing by printing so as to face the organic EL devices. By overlapping at least two filters out of the red, green, and blue filters by printing, a black matrix is formed so as to face the boundary region of the organic EL devices, so that external light reflection by a wiring electrode between the devices is suppressed.
    Type: Application
    Filed: November 19, 2002
    Publication date: June 12, 2003
    Inventors: Tetsuo Urabe, Jiro Yamada, Tatsuya Sasaoka
  • Publication number: 20030011301
    Abstract: In conventional organic EL displays, a metal cathode is formed on an organic layer through vapor deposition. In these, therefore, the cathode is of a film having tensile stress and easily peels off from the organic layer to degrade the reliability of the organic EL displays. A novel organic EL device is provided, in which a film having no internal stress or having compression stress is formed for a second electrode or for a second electrode and a protective layer, on an organic layer at least including a light-emitting layer of an organic light-emitting material. Also provided is an organic EL display including a plurality of those organic EL devices.
    Type: Application
    Filed: October 15, 1999
    Publication date: January 16, 2003
    Inventors: TATSUYA SASAOKA, MITSUNOBU SEKIYA, NAOKI SANO, TETSUO NAKAYAMA, TAKASHI HIRANO, YASUHIRO CHIBA
  • Patent number: 6388387
    Abstract: To provide an optical element in which resistance of electrodes on a scanning side is reduced, a rate of effectively utilizing light generated at organic layers is promoted and shortcircuit between anodes and cathodes is prevented, there is provided an optical element including first electrodes formed on a substrate, organic layers at least including organic light emitting materials formed on the first electrodes and second electrodes formed on the organic layers, in which the first electrodes and the second electrodes are formed to be substantially orthogonal to each other and the organic layers are formed in an island-like shape at positions at which the first electrodes and the second electrodes intersect with each other.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: May 14, 2002
    Assignee: Sony Corporation
    Inventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama
  • Patent number: 6380673
    Abstract: An organic EL display that realizes low electric power consumption and display with high brightness by decreasing the resistance of the electrode on the scanning side is provided.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: April 30, 2002
    Assignee: Sony Corporation
    Inventors: Mitsunobu Sekiya, Takashi Hirano, Tetsuo Nakayama, Naoki Sano, Tatsuya Sasaoka
  • Publication number: 20020027414
    Abstract: An organic EL display that realizes low electric power consumption and display with high brightness by decreasing the resistance of the electrode on the scanning side is provided.
    Type: Application
    Filed: September 16, 1999
    Publication date: March 7, 2002
    Inventors: MITSUNOBU SEKIYA, TAKASHI HIRANO, TETSUO NAKAYAMA, NAOKI SANO, TATSUYA SASAOKA
  • Patent number: 6215250
    Abstract: To provide an optical element in which resistance of electrodes on a scanning side is reduced, a rate of effectively utilizing light generated at organic layers is promoted and shortcircuit between anodes and cathodes is prevented, there is provided an optical element including first electrodes formed on a substrate, organic layers at least including organic light emitting materials formed on the first electrodes and second electrodes formed on the organic layers, in which the first electrodes and the second electrodes are formed to be substantially orthogonal to each other and the organic layers are formed in an island-like shape at positions at which the first electrodes and the second electrodes intersect with each other.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: April 10, 2001
    Assignee: Sony Corporation
    Inventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama
  • Patent number: 6120338
    Abstract: The present invention provides a method of manufacturing an organic EL display capable of decreasing the resistance of scanning-side electrodes, and improving the efficiency of utilization of light emitted in organic layers. In the manufacturing method, stripe first electrodes made of a transparent conductive material are formed in parallel on a transparent substrate, and then an insulation layer is formed on the transparent substrate with the apertures formed above the first electrodes. An organic film 24 composed of a film of an organic luminescent material, a second electrode material film and a protecting film is laminated in this order on the transparent substrate to cover the insulation layer, and then independent island resist patterns are formed on the protecting film.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: September 19, 2000
    Assignee: Sony Corporation
    Inventors: Takashi Hirano, Tatsuya Sasaoka, Mitsunobu Sekiya, Naoki Sano, Tetsuo Nakayama