Patents by Inventor Tetsuji Omura

Tetsuji Omura 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: 7586257
    Abstract: A green pixel is provided with an organic EL element having an emissive layer which emits green light, but is not provided with a color filter. On the other hand, red and blue pixels comprise organic EL elements having an emissive layer which emits white light. The white emissive layer is composed of a lamination of an orange organic emissive layer and a blue organic emissive layer. The red and blue pixels are further provided with red and blue color filters, respectively, to limit the emitted white light to those colors.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: September 8, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Patent number: 7572162
    Abstract: A frame-shaped groove is formed on a panel adhering part of a sealing board, a paste including low melting point glass powder is buried in the groove, and a frame-shaped glass paste layer is formed. A solvent included in the glass paste layer is volatilized for solidification, and a low melting point glass frame is provided. Then, the low melting point glass frame protruded on the surface of the sealing board is removed, and the surface of a plane including the surface of the adhering part of the sealing board is flattened. A low heat resistant layer is formed on the flattened adhering plane of the sealing board. The sealing board is arranged to face an element board at a prescribed interval, laser beams are applied on the low melting point glass frame through the element board, and the area is heated. Thus, the low melting point glass rises, and the sealing board is welded with the element board.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: August 11, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Tetsuji Omura, Ryuji Nishikawa
  • Patent number: 7560858
    Abstract: A metal solder layer is formed on a sealing substrate through patterning. A pixel substrate is overlapped to the sealing substrate and the solder layer is irradiated with laser so that the sealing substrate and the pixel substrate are connected. Because the joining is achieved by the metal solder layer, intrusion of moisture into the inside space can be reduced. In addition, the solder layer can be very precisely formed through patterning.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: July 14, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura, Masaya Nakai
  • Patent number: 7548019
    Abstract: An electroluminescence panel having an electroluminescence element in each pixel, wherein the electroluminescence element comprises an emissive element layer having at least a light emitting function between a reflective film and a semi-transmissive film which is provided opposing the reflective film and have portions having different cavity lengths in one pixel, the cavity length being a distance between the reflective film and the semi-transmissive film. Such a structure can be realized, for example, by changing a thickness of a transparent electrode which is a lower electrode of the element. Because peak wavelength that can be intensified can be varied among regions in one pixel having different cavity lengths, a viewing angle dependency is improved.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: June 16, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Tetsuji Omura, Ryuji Nishikawa
  • Patent number: 7531958
    Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. A color filter is provided underneath the semi-transmissive film to further restrict the wavelength of light which has passed through the semi-transmissive film.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: May 12, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Publication number: 20090115642
    Abstract: A PDA as an apparatus actuated by key operations comprises: a substrate; an exothermic semiconductor device provided on a first major surface of the substrate; a plurality of switches provided on a second major surface of the substrate; a key mat located on the side of the second major surface of the substrate; a plurality of pressure conveying portions protruding from one of the major surfaces of the key mat toward each of the plurality of switches, the one of the major surfaces facing the second major surface of the substrate; and a key that is provided on the other major surface of the key mat and that can be pressed down to the key mat.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 7, 2009
    Inventors: Tetsuji Omura, Nobuyuki Higashiyama, Hideki Mizuhara
  • Patent number: 7498738
    Abstract: A semi-transmissive film is provided underneath a transparent electrode of an organic EL element. The optical length of the interval between the upper surface of the semi-transmissive film and the lower surface of a counter electrode serving as a reflective layer is configured such that this interval functions as a microresonator for selecting light having a specific wavelength. Further, a light-shielding film is provided in a position corresponding to the peripheral portion of the semi-transmissive film, so as to prevent light having a different color from being ejected due to non-uniformity in the optical length.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: March 3, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Publication number: 20080024402
    Abstract: Disclosed is a light-emitting display having a plurality of pixels wherein each pixel comprises a light-emitting device (100) having a light-emitting element layer which is formed between a first electrode and a second electrode and contains at least a light-emitting layer. An insulating layer (30) is formed between the light-emitting device (100) and a surface of a first or second substrate on the viewing side of the display, and the insulating layer (30) is provided with recesses and projections in at least one or more pixel regions, thereby forming an optical path length adjusting portion (32). By forming such an optical path length adjusting portion (32) in a pixel region, there is an increase in the interference conditions for the light emitted from the light-emitting device (100) to the outside, thereby averaging the interference.
    Type: Application
    Filed: April 27, 2005
    Publication date: January 31, 2008
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Publication number: 20070194303
    Abstract: In a method for manufacturing an organic light-emitting element, comprising holding an organic light-emitting element substrate with the use of an electrostatic chuck and bonding it to a sealing substrate, the present invention prevents a driving circuit incorporated in the organic light-emitting element substrate from deteriorating due to static electricity from the electrostatic chuck. In order to accomplish this, the present invention is characterized by providing on a second principal surface 1b of a substrate 1, or between a first principal surface 1a and the driving circuit 2 an electrically conductive layer 11 for preventing the driving circuit 2 from deteriorating due to the static electricity from the electrostatic chuck.
    Type: Application
    Filed: August 24, 2006
    Publication date: August 23, 2007
    Inventors: Gaku Harada, Tetsuji Omura
  • Publication number: 20070164672
    Abstract: A frame-shaped groove is formed on a panel adhering part of a sealing board (10), a paste including low melting point glass powder is buried in the groove, and a frame-shaped glass paste layer is formed. A solvent included in the glass paste layer is volatilized for solidification, and a low melting point glass frame (22) is provided. Then, the low melting point glass frame (22) protruded on the surface of the sealing board (10) is removed, and the surface of a plane including the surface of the adhering part of the sealing board (10) is flattened. A low heat resistant layer (24) is formed on the flattened adhering plane of the sealing board (10). The sealing board (10) is arranged to face an element board (26) at a prescribed interval, laser beams are applied on the low melting point glass frame (22) through the element board (26), and the area is heated. Thus, the low melting point glass rises, and the sealing board (10) is welded with the element board.
    Type: Application
    Filed: June 13, 2005
    Publication date: July 19, 2007
    Inventors: Tetsuji Omura, Ryuji Nishikawa
  • Publication number: 20070126012
    Abstract: A combined thickness of an optical distance between an anode and a cathode together with a red-light-emitting layer, a blue-light-emitting layer, and the like of a light-emitting element and the anode is set to a thickness by which red and blue light can be intensified by interference. Thus, light of necessary wavelength can be intensified, and white light can be extracted efficiently.
    Type: Application
    Filed: November 21, 2006
    Publication date: June 7, 2007
    Inventors: Tetsuji Omura, Masaya Nakai, Makoto Shirakawa, Shuichi Sasa
  • Publication number: 20060192220
    Abstract: Each pixel includes a region where a lower reflection film is not present. In each pixel, there is a region where a microcavity structure is formed between a counter electrode and a lower reflection film and another region where the microcavity structure is not formed. The regions differentiated in cavity length can differently enhance the peak wavelength so as to improve the viewing angle dependence. Furthermore, in each of R, G, and B light emitting pixels, the area ratio of a region where the microcavity structure is present and another region where the microcavity structure is not present can be adjusted so as to eliminate the differences caused by the microcavity structure.
    Type: Application
    Filed: February 27, 2006
    Publication date: August 31, 2006
    Inventors: Ryuji Nishikawa, Tetsuji Omura, Masaya Nakai
  • Patent number: 7053549
    Abstract: The invention prevents moisture infiltration into a pixel region and improves reliability of an organic EL display device. A plurality of pixels is disposed in a matrix on a device substrate to form a pixel region. Each of the pixels in the pixel region is provided with an organic EL element and a driving transistor for driving the organic EL element. Furthermore, organic interlayer insulating films are formed on the driving transistor and under the organic EL element. The device substrate and a sealing substrate are attached with a sealing member disposed on a peripheral region of the pixel region. The organic interlayer insulating films are separated by a separating region provided between the sealing member and the pixel region.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: May 30, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Tetsuji Omura, Ryuji Nishikawa
  • Patent number: 7023133
    Abstract: The invention prevents a desiccant layer in an organic EL display panel from peeling off and enhances reliability in resistance to a temperature cycle. A device glass substrate is attached to a sealing glass substrate for sealing devices with sealing resin made of epoxy resin etc. The sealing glass substrate is formed with a pocket portion by etching. An Al layer having a thickness of about 4000 ? is formed on a bottom of the pocket portion by an evaporation method, serving as a stress buffering layer. A desiccant layer for absorbing moisture is coated on the Al layer.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: April 4, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Tetsuji Omura
  • Publication number: 20050280364
    Abstract: An electroluminescence panel having an electroluminescence element in each pixel, wherein the electroluminescence element comprises an emissive element layer having at least a light emitting function between a reflective film and a semi-transmissive film which is provided opposing the reflective film and have portions having different cavity lengths in one pixel, the cavity length being a distance between the reflective film and the semi-transmissive film. Such a structure can be realized, for example, by changing a thickness of a transparent electrode which is a lower electrode of the element. Because peak wavelength that can be intensified can be varied among regions in one pixel having different cavity lengths, a viewing angle dependency is improved.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 22, 2005
    Inventors: Tetsuji Omura, Ryuji Nishikawa
  • Publication number: 20050269940
    Abstract: A metal solder layer is formed on a sealing substrate through patterning. A pixel substrate is overlapped to the sealing substrate and the solder layer is irradiated with laser so that the sealing substrate and the pixel substrate are connected. Because the joining is achieved by the metal solder layer, intrusion of moisture into the inside space can be reduced. In addition, the solder layer can be very precisely formed through patterning.
    Type: Application
    Filed: February 25, 2005
    Publication date: December 8, 2005
    Inventors: Ryuji Nishikawa, Tetsuji Omura, Maasaya Nakai
  • Patent number: 6967438
    Abstract: In a display device which is formed by attaching together a device substrate and a sealing substrate, a desiccant is coated to form a shape having a plurality of bending portions on the sealing substrate. Furthermore, the path coated with the desiccant on the sealing substrate is longer than conventional devices, thereby increasing a gross surface area and thus improving moisture absorption effect.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: November 22, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Toru Sasatani, Tetsuji Omura
  • Patent number: 6930449
    Abstract: In a sealing structure of an electroluminescent display device, in which a first glass substrate formed with an EL element and a second glass substrate as a cap are attached to each other, breaking of the element device is prevented when external force is applied to the first glass substrate and the second glass substrate. The sealing structure has the first glass substrate provided with the EL element on a surface thereof, the second glass substrate attached to the first glass substrate with a sealing resin, a desiccant layer formed on a surface of the second glass substrate and a stress buffer layer covering a surface of the desiccant layer.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: August 16, 2005
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Toru Sasatani, Tetsuji Omura
  • Publication number: 20050174042
    Abstract: A sealing substrate is placed opposing an EL substrate with a predetermined gap therebetween. The sealing substrate is nontransparent. A laser irradiation region of a terminal portion of the EL substrate is formed by a transparent conductor such as ITO. With this structure, a periphery region of the sealing substrate is irradiated with laser through the EL substrate and heated, so that glass is elevated and welded.
    Type: Application
    Filed: January 13, 2005
    Publication date: August 11, 2005
    Inventors: Ryuji Nishikawa, Tetsuji Omura
  • Publication number: 20050174039
    Abstract: A sealing substrate and an EL substrate are placed opposing each other with a predetermined gap therebetween. A nontransparent region is formed in a peripheral portion of the sealing substrate in advance. The nontransparent region is irradiated with laser through the EL substrate so that the nontransparent region is heated and glass is elevated and welded. Because portions of the sealing substrate other than the nontransparent region are clear, it is possible to realize a top emission type structure.
    Type: Application
    Filed: January 18, 2005
    Publication date: August 11, 2005
    Inventors: Ryuji Nishikawa, Tetsuji Omura