Patents by Inventor Kunihiko Shirahata

Kunihiko Shirahata 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: 10249840
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. Apart of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: April 2, 2019
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
  • Publication number: 20180294429
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. Apart of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
  • Patent number: 10008686
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. A part of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: June 26, 2018
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
  • Publication number: 20180053909
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. A part of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Application
    Filed: October 17, 2017
    Publication date: February 22, 2018
    Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
  • Publication number: 20180053910
    Abstract: An optical device (10) has a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a transparent conductive material and the like. In addition, the second conductive film (130) that constitutes the joining structure is constituted by a metal material. A transition region, in which the transparent conductive material and the metal material are mixed, exists between the first conductive film (110) and the second conductive film (130). The transparent conductive material includes, for example, a conductive polymer.
    Type: Application
    Filed: October 27, 2017
    Publication date: February 22, 2018
    Inventors: Kenichi OKUYAMA, Yuji SAITO, Hiroki TAN, Masanobu AKAGI, Kunihiko SHIRAHATA
  • Patent number: 9831460
    Abstract: An optical device (10) has a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a transparent conductive material and the like. In addition, the second conductive film (130) that constitutes the joining structure is constituted by a metal material. A transition region, in which the transparent conductive material and the metal material are mixed, exists between the first conductive film (110) and the second conductive film (130). The transparent conductive material includes, for example, a conductive polymer.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: November 28, 2017
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Kenichi Okuyama, Yuji Saito, Hiroki Tan, Masanobu Akagi, Kunihiko Shirahata
  • Patent number: 9825248
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. A part of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: November 21, 2017
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
  • Patent number: 9786865
    Abstract: An optical device includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110), which constitutes the joining structure, is constituted by a transparent conductive material and the like. The second conductive film (130), which constitutes the joining structure, is constituted by a metal material. A dispersing agent, which is constituted by a material different from the transparent conductive material, exists at a portion of the first conductive film (110) which is located at the periphery of the second conductive film (130).
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: October 10, 2017
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Hiroki Tan, Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Kunihiko Shirahata
  • Publication number: 20160118617
    Abstract: An organic EL element (10) includes a first electrode (110), an organic layer (120), and a second electrode (130). The organic layer (120) is located between the first electrode (110) and the second electrode (130). The second electrode (130) includes Ga in the vicinity of an interface with the organic layer (120). The second electrode (130) includes, for example, a Ga-containing layer (132) and a conductive layer (134). In the Ga-containing layer (132), an element having a highest content rate is Ga. The Ga-containing layer (132) is, for example, a thin Ga layer.
    Type: Application
    Filed: November 18, 2013
    Publication date: April 28, 2016
    Applicants: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Yuji SAITO, Hiroshi ABIKO, Hiroki TAN, Teruichi WATANABE, Kunihiko SHIRAHATA
  • Publication number: 20160111672
    Abstract: An organic EL element (10) includes a first electrode (110), an organic layer (120), and a second electrode (130). The organic layer (120) is located between the first electrode (110) and the second electrode (130). The second electrode (130) includes Ga in the vicinity of an interface with the organic layer (120). The second electrode (130) includes, for example, a Ga-containing layer (132) and a conductive layer (134). In the Ga-containing layer (132), an element having a highest content rate is Ga. The Ga-containing layer (132) is, for example, a thin Ga layer.
    Type: Application
    Filed: November 18, 2013
    Publication date: April 21, 2016
    Inventors: Yuji SAITO, Hiroshi ABIKO, Hiroki TAN, Teruichi WATANABE, Kunihiko SHIRAHATA
  • Publication number: 20160056408
    Abstract: An optical device (10) includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a conductive material. The second conductive film (130) that constitutes the joining structure is constituted by a metal material. Apart of the second conductive film (130) comes into contact with the first conductive film (110). A plurality of concave portions are provided in a contact surface of the second conductive film (130) which comes into contact with the first conductive film (110). The contact surface has a surface roughness greater than a surface roughness of a non-contact surface of the second conductive film (130) which does not come into contact with the first conductive film (110).
    Type: Application
    Filed: March 25, 2014
    Publication date: February 25, 2016
    Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
  • Publication number: 20160056407
    Abstract: An optical device includes a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110), which constitutes the joining structure, is constituted by a transparent conductive material and the like. The second conductive film (130), which constitutes the joining structure, is constituted by a metal material. A dispersing agent, which is constituted by a material different from the transparent conductive material, exists at a portion of the first conductive film (110) which is located at the periphery of the second conductive film (130).
    Type: Application
    Filed: March 25, 2014
    Publication date: February 25, 2016
    Inventors: Hiroki TAN, Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Kunihiko SHIRAHATA
  • Publication number: 20160056406
    Abstract: An optical device (10) has a joining structure in which a first conductive film (110) and a second conductive film (130) are joined to each other. The first conductive film (110) that constitutes the joining structure is constituted by a transparent conductive material and the like. In addition, the second conductive film (130) that constitutes the joining structure is constituted by a metal material. A transition region, in which the transparent conductive material and the metal material are mixed, exists between the first conductive film (110) and the second conductive film (130). The transparent conductive material includes, for example, a conductive polymer.
    Type: Application
    Filed: March 25, 2014
    Publication date: February 25, 2016
    Applicant: PIONEER CORPORATION
    Inventors: Kenichi OKUYAMA, Yuji SAITO, Hiroki TAN, Masanobu AKAGI, Kunihiko SHIRAHATA
  • Patent number: 7641530
    Abstract: An organic EL panel and a method of forming the same, in which a bottom electrode of an organic EL device is flattened at the surface so that organic layers deposited thereon have uniform thicknesses, thereby avoiding the occurrence of leak currents and allowing favorable luminescence characteristics. The organic EL panel has an organic EL device formed on a substrate, the device comprising the bottom electrode, the organic layers including at least an organic luminescent layer, and a top electrode. The bottom electrode has an etched surface obtained by chemically etching a polished surface of an electrode material film. The organic layers are formed on the etched surface.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 5, 2010
    Assignee: Tohoku Pioneer Corporation
    Inventors: Toshinao Yuki, Kunihiko Shirahata
  • Publication number: 20090218215
    Abstract: A laminate for forming a substrate with wires in which a silver type material is used for a conductor layer and the layer is covered with a conductive protection layer for protection, the laminate for forming a substrate with wires exhibiting an extremely low contact resistance between the conductive protection layer and a cathode superposed thereon, is presented. A laminate for forming a substrate with wires, which comprises a substrate, a conductor layer comprising silver or a silver alloy, formed on the substrate, and a conductive protection layer comprising indium zinc oxide, formed on the conductor layer to cover the conductor layer, wherein the conductive protection layer is a conductive protection layer formed by sputtering in an atmosphere wherein the oxidizing gas content in the sputtering gas is not more than 1.5 vol %.
    Type: Application
    Filed: February 25, 2009
    Publication date: September 3, 2009
    Applicants: ASAHI GLASS COMPANY LIMITED, PIONEER CORPORATION, TOHOKU PIONEER CORPORATION, ASAHI GLASS FINE TECHNO CO., LTD.
    Inventors: Kenichi NAGAYAMA, Kunihiko Shirahata, Takayuki Kitajima, Masaki Komada, Yusuke Nakajima, Takehiko Hiruma, Hitoshi Saiki
  • Publication number: 20060172127
    Abstract: A laminate for forming a substrate with wires in which a silver type material is used for a conductor layer and the layer is covered with a conductive protection layer for protection, the laminate for forming a substrate with wires exhibiting an extremely low contact resistance between the conductive protection layer and a cathode superposed thereon, is presented. A laminate for forming a substrate with wires, which comprises a substrate, a conductor layer comprising silver or a silver alloy, formed on the substrate, and a conductive protection layer comprising indium zinc oxide, formed on the conductor layer to cover the conductor layer, wherein the conductive protection layer is a conductive protection layer formed by sputtering in an atmosphere wherein the oxidizing gas content in the sputtering gas is not more than 1.5 vol %.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 3, 2006
    Applicants: ASAHI GLASS COMPANY LIMITED, PIONEER CORPORATION, TOHOKU PIONEER CORPORATION, ASAHI GLASS FINE TECHNO CO., LTD.
    Inventors: Kenichi Nagayama, Kunihiko Shirahata, Takayuki Kitajima, Masaki Komada, Yusuke Nakajima, Takehiko Hiruma, Hitoshi Saiki
  • Patent number: 7038372
    Abstract: A first electrode is formed above a substrate, organic material layers are stacked above the first electrode, and a second electrode is formed above the organic material layers. Among the organic material layers, at least two organic material layers having interfaces which electrons or holes traverse are formed by layers which are heat-treated at a temperature that is equal to or higher than the glass transition points of materials respectively constituting the organic material layers and equal to or lower than the melting points of the materials.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: May 2, 2006
    Assignee: Tohoku Pioneer Corporation
    Inventors: Toshinao Yuki, Kunihiko Shirahata, Akihiko Numazawa, Shinsuke Tanaka, Tsuyoshi Naijo, Masato Nakamura, Yusuke Nakajima
  • Patent number: 7023140
    Abstract: An organic EL display apparatus which can improve the reliability thereof, by avoiding a leak current which occurs after an operating time, without reducing the product yield. The organic EL display apparatus is comprised of an organic EL panel section, and a driving section which has a reverse voltage restriction unit (means for restricting a reverse voltage) for restricting a reverse voltage which is applied when organic EL devices are not lighted. When a breakdown voltage with respect to a preset thickness do of the organic material layer has been Vb, the reverse voltage restriction unit will not only set the reverse voltage Vm (to be applied during a non-lighting period) to Vm<(½)·Vb, but also restrict the continuous applying time of this reverse voltage Vm within a preset period.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: April 4, 2006
    Assignee: Tohoku Pioneer Corporation
    Inventors: Toshinao Yuki, Kunihiko Shirahata, Kota Hasebe, Masaki Murakata
  • Publication number: 20050285514
    Abstract: An organic EL panel and a method of forming the same, in which a bottom electrode of an organic EL device is flattened at the surface so that organic layers deposited thereon have uniform thicknesses, thereby avoiding the occurrence of leak currents and allowing favorable luminescence characteristics. The organic EL panel has an organic EL device formed on a substrate, the device comprising the bottom electrode, the organic layers including at least an organic luminescent layer, and a top electrode. The bottom electrode has an etched surface obtained by chemically etching a polished surface of an electrode material film. The organic layers are formed on the etched surface.
    Type: Application
    Filed: June 28, 2005
    Publication date: December 29, 2005
    Inventors: Toshinao Yuki, Kunihiko Shirahata
  • Publication number: 20050110423
    Abstract: An organic EL display apparatus which can improve the reliability thereof, by avoiding a leak current which occurs after an operating time, without reducing the product yield. The organic EL display apparatus is comprised of an organic EL panel section, and a driving section which has a reverse voltage restriction unit (means for restricting a reverse voltage) for restricting a reverse voltage which is applied when organic EL devices are not lighted. When a breakdown voltage with respect to a preset thickness do of the organic material layer has been Vb, the reverse voltage restriction unit will not only set the reverse voltage Vm (to be applied during a non-lighting period) to Vm<(½)·Vb, but also restrict the continuous applying time of this reverse voltage Vm within a preset period.
    Type: Application
    Filed: November 22, 2004
    Publication date: May 26, 2005
    Inventors: Toshinao Yuki, Kunihiko Shirahata, Kota Hasebe, Masaki Murakata