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).
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Patent number: 10249840Abstract: 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: GrantFiled: June 11, 2018Date of Patent: April 2, 2019Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
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Publication number: 20180294429Abstract: 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: ApplicationFiled: June 11, 2018Publication date: October 11, 2018Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
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Patent number: 10008686Abstract: 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: GrantFiled: October 17, 2017Date of Patent: June 26, 2018Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
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Publication number: 20180053909Abstract: 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: ApplicationFiled: October 17, 2017Publication date: February 22, 2018Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
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Publication number: 20180053910Abstract: 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: ApplicationFiled: October 27, 2017Publication date: February 22, 2018Inventors: Kenichi OKUYAMA, Yuji SAITO, Hiroki TAN, Masanobu AKAGI, Kunihiko SHIRAHATA
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Patent number: 9831460Abstract: 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: GrantFiled: March 25, 2014Date of Patent: November 28, 2017Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Kenichi Okuyama, Yuji Saito, Hiroki Tan, Masanobu Akagi, Kunihiko Shirahata
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Patent number: 9825248Abstract: 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: GrantFiled: March 25, 2014Date of Patent: November 21, 2017Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Hiroki Tan, Kunihiko Shirahata
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Patent number: 9786865Abstract: 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: GrantFiled: March 25, 2014Date of Patent: October 10, 2017Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Hiroki Tan, Yuji Saito, Masanobu Akagi, Kenichi Okuyama, Kunihiko Shirahata
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Publication number: 20160118617Abstract: 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: ApplicationFiled: November 18, 2013Publication date: April 28, 2016Applicants: PIONEER CORPORATION, TOHOKU PIONEER CORPORATIONInventors: Yuji SAITO, Hiroshi ABIKO, Hiroki TAN, Teruichi WATANABE, Kunihiko SHIRAHATA
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Publication number: 20160111672Abstract: 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: ApplicationFiled: November 18, 2013Publication date: April 21, 2016Inventors: Yuji SAITO, Hiroshi ABIKO, Hiroki TAN, Teruichi WATANABE, Kunihiko SHIRAHATA
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Publication number: 20160056408Abstract: 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: ApplicationFiled: March 25, 2014Publication date: February 25, 2016Inventors: Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Hiroki TAN, Kunihiko SHIRAHATA
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Publication number: 20160056407Abstract: 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: ApplicationFiled: March 25, 2014Publication date: February 25, 2016Inventors: Hiroki TAN, Yuji SAITO, Masanobu AKAGI, Kenichi OKUYAMA, Kunihiko SHIRAHATA
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Publication number: 20160056406Abstract: 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: ApplicationFiled: March 25, 2014Publication date: February 25, 2016Applicant: PIONEER CORPORATIONInventors: Kenichi OKUYAMA, Yuji SAITO, Hiroki TAN, Masanobu AKAGI, Kunihiko SHIRAHATA
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Patent number: 7641530Abstract: 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: GrantFiled: June 28, 2005Date of Patent: January 5, 2010Assignee: Tohoku Pioneer CorporationInventors: Toshinao Yuki, Kunihiko Shirahata
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Publication number: 20090218215Abstract: 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: ApplicationFiled: February 25, 2009Publication date: September 3, 2009Applicants: 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
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Publication number: 20060172127Abstract: 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: ApplicationFiled: March 30, 2006Publication date: August 3, 2006Applicants: 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
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Patent number: 7038372Abstract: 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: GrantFiled: June 10, 2004Date of Patent: May 2, 2006Assignee: Tohoku Pioneer CorporationInventors: Toshinao Yuki, Kunihiko Shirahata, Akihiko Numazawa, Shinsuke Tanaka, Tsuyoshi Naijo, Masato Nakamura, Yusuke Nakajima
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Patent number: 7023140Abstract: 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: GrantFiled: November 22, 2004Date of Patent: April 4, 2006Assignee: Tohoku Pioneer CorporationInventors: Toshinao Yuki, Kunihiko Shirahata, Kota Hasebe, Masaki Murakata
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Publication number: 20050285514Abstract: 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: ApplicationFiled: June 28, 2005Publication date: December 29, 2005Inventors: Toshinao Yuki, Kunihiko Shirahata
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Publication number: 20050110423Abstract: 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: ApplicationFiled: November 22, 2004Publication date: May 26, 2005Inventors: Toshinao Yuki, Kunihiko Shirahata, Kota Hasebe, Masaki Murakata