Patents by Inventor Tokie Tanaka

Tokie Tanaka 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: 8778722
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate comprises: a substrate; a first oxide layer formed above the substrate; a second oxide layer formed above the first oxide layer with a channel part interposed therebetween; gate insulating film formed above the substrate, the first oxide layer and the second oxide layer; a gate electrode and a gate wire formed above the gate insulating film.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: July 15, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Koki Yano, Tokie Tanaka
  • Patent number: 8637124
    Abstract: An oxide material including indium (In), tin (Sn), and metal element M, and including an ilmenite structure compound; a sputtering target composed thereof; a transparent conductive film formed by using such a sputtering target; and a transparent electrode composed of such a transparent conductive film.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: January 28, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Tokie Tanaka
  • Patent number: 8524123
    Abstract: A sputtering target which is composed of a sintered body of an oxide which contains at least indium, tin, and zinc and includes a spinel structure compound of Zn2SnO4 and a bixbyite structure compound of In2O3. A sputtering target includes indium, tin, zinc, and oxygen with only a peak ascribed to a bixbyite structure compound being substantially observed by X-ray diffraction (XRD).
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: September 3, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Akira Kaijo, Satoshi Umeno, Tokie Tanaka
  • Patent number: 8383019
    Abstract: A sputtering target including indium, tin, zinc and oxygen, and including a hexagonal layered compound, a spinel structure compound and a bixbyite structure compound.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: February 26, 2013
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Tokie Tanaka
  • Patent number: 8304359
    Abstract: A sputtering target which is composed of a sintered body of an oxide containing indium, tin and zinc as main components; the atomic ratio of In/(In+Sn+Zn) being 0.10 to 0.35; the atomic ratio of Sn/(In+Sn+Zn) being 0.15 to 0.35; and the atomic ratio of Zn/(In+Sn+Zn) being 0.50 to 0.70; and containing a hexagonal layered compound shown by In2O3(ZnO)m, wherein m is an integer of 3 to 9, and a spinel structure compound shown by Zn2SnO4.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 6, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka, legal representative, Yukio Shimane
  • Patent number: 8263977
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate comprises: a substrate; a first oxide layer formed above the substrate; a second oxide layer formed above the first oxide layer with a channel part interposed therebetween; a gate insulating film formed above the substrate, the first oxide layer and the second oxide layer; a gate electrode and a gate wire formed above the gate insulating film.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: September 11, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Koki Yano, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 8153033
    Abstract: An amorphous transparent conductive film containing as a main component a six oxygen-coordinated metal oxide, and satisfying, in a radial distribution function (RDF) obtained by an X-ray scattering measurement, a relationship of A/B>1, providing that the maximum value of RDF at an interatomic distance of from 0.30 nm to 0.36 nm is A and the maximum value of RDF at an interatomic distance of from 0.36 nm to 0.42 nm is B.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: April 10, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yukio Shimane, Kazuyoshi Inoue, Masato Matsubara, Nobuo Tanaka, Tokie Tanaka, legal representative, Shigekazu Tomai, Koki Yano, Shigeo Matsuzaki
  • Publication number: 20120009725
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate comprises: a substrate; a first oxide layer formed above the substrate; a second oxide layer formed above the first oxide layer with a channel part interposed therebetween; gate insulating film formed above the substrate, the first oxide layer and the second oxide layer; a gate electrode and a gate wire formed above the gate insulating film.
    Type: Application
    Filed: August 24, 2011
    Publication date: January 12, 2012
    Inventors: Kazuyoshi INOUE, Koki Yano, Nobuo Tanaka, Tokie Tanaka
  • Patent number: 8062777
    Abstract: This invention provides a transparent oxide semiconductor, which comprises an oxide comprising indium oxide as a main component and cerium oxide as an additive and has such properties that light-derived malfunction does not occur, there is no variation in specific resistance of a thin film caused by heating and the like, and the mobility is high, and a process for producing the same. A semiconductor thin film characterized by comprising indium oxide and cerium oxide and being crystalline and having a specific resistance of 10+1 to 10+8 ?cm is used. This semiconductor thin film has no significant change in specific resistance and has high mobility. Accordingly, an element having improved switching properties can be provided by constructing a switching element using this semiconductor thin film.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: November 22, 2011
    Assignee: Idemitsu Kosan, Co., Ltd.
    Inventors: Kazuyoshi Inoue, Koki Yano, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 8038911
    Abstract: An oxide target including indium (In) and an element (A) selected from the following group A, wherein it contains an oxide shown by AInO3, Group A: lanthanum (La), neodymium (Nd), ytterbium (Yb), erbium (Er) and dysprosium (Dy).
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: October 18, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 8030195
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate includes: a substrate; a gate electrode and a gate wire formed above the substrate; a gate insulating film formed above the gate electrode and the gate wire; a first oxide layer formed above the gate insulating film which is formed at least above the gate electrode; and a second oxide layer formed above the first oxide layer; wherein at least a pixel electrode is formed from the second oxide layer.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 4, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Koki Yano, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 7998372
    Abstract: Disclosed is a semiconductor thin film which can be formed at a relatively low temperature even on a flexible resin substrate. Since the semiconductor thin film is stable to visible light and has high device characteristics such as transistor characteristics, in the case where the semiconductor thin film is used as a switching device for driving a display, even when overlapped with a pixel part, the luminance of a display panel does not deteriorate. Specifically, a transparent semiconductor thin film 40 is produced by forming an amorphous film containing zinc oxide and indium oxide and then oxidizing the film so that the resulting film has a carrier density of 10+17 cm?3 or less, a Hall mobility of 2 cm2/V·sec or higher, and an energy band gap of 2.4 EV or more.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: August 16, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 7982215
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate includes: a substrate; a gate electrode and a gate wire formed above the substrate; a gate insulating film formed above the gate electrode and the gate wire; a first oxide layer formed above the gate insulating film which is formed at least above the gate electrode; and a second oxide layer formed above the first oxide layer; wherein at least a pixel electrode is formed from the second oxide layer.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: July 19, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Koki Yano, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Publication number: 20110121244
    Abstract: A sputtering target including indium, tin, zinc and oxygen, and including a hexagonal layered compound, a spinel structure compound and a bixbyite structure compound.
    Type: Application
    Filed: September 14, 2006
    Publication date: May 26, 2011
    Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka
  • Patent number: 7906777
    Abstract: The present invention provides a semiconductor thin film which can be manufactured at a relatively low temperature even on a flexible resin substrate. As a semiconductor thin film having a low carrier concentration, a high Hall mobility and a large energy band gap, an amorphous film containing zinc oxide and tin oxide is formed to obtain a carrier density of 10+17 cm?3 or less, a Hall mobility of 2 cm2/V·sec or higher, and an energy band gap of 2.4 eV or more. Then, the amorphous film is oxidized to form a transparent semiconductor thin film 40.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: March 15, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Patent number: 7889298
    Abstract: A transparent conductive film including an indium oxide, a tin oxide and at least one lanthanoid metal oxide, the film including a portion connected to a conductor, and at least the connection portion having crystallinity.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: February 15, 2011
    Assignee: Idemitsu Kosan Co. Ltd.
    Inventors: Satoshi Umeno, Akira Kaijo, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka, legal representative
  • Publication number: 20100283055
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate comprises: a substrate; a first oxide layer formed above the substrate; a second oxide layer formed above the first oxide layer with a channel part interposed therebetween; a gate insulating film formed above the substrate, the first oxide layer and the second oxide layer; a gate electrode and a gate wire formed above the gate insulating film.
    Type: Application
    Filed: November 30, 2006
    Publication date: November 11, 2010
    Inventors: Kazuyoshi Inoue, Koki Yano, Nobuo Tanaka, Tokie Tanaka
  • Publication number: 20100282604
    Abstract: An oxide target including indium (In) and an element (A) selected from the following group A, wherein it contains an oxide shown by AInO3, Group A: lanthanum (La), neodymium (Nd), ytterbium (Yb), erbium (Er) and dysprosium (Dy).
    Type: Application
    Filed: August 6, 2007
    Publication date: November 11, 2010
    Inventors: Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka
  • Publication number: 20100285632
    Abstract: An object of the invention is to provide a TFT substrate and a method for producing a TFT substrate which is capable of drastically reducing the production cost by decreasing the number of steps in the production process and improving production yield. A TFT substrate includes: a substrate; a gate electrode and a gate wire formed above the substrate; a gate insulating film formed above the gate electrode and the gate wire; a first oxide layer formed above the gate insulating film which is formed at least above the gate electrode; and a second oxide layer formed above the first oxide layer; wherein at least a pixel electrode is formed from the second oxide layer.
    Type: Application
    Filed: July 20, 2010
    Publication date: November 11, 2010
    Inventors: Kazuyoshi INOUE, Koki Yano, Nobuo Tanaka, Tokie Tanaka
  • Publication number: 20100266787
    Abstract: An oxide material including indium (In), tin (Sn), and metal element M, and including an ilmenite structure compound; a sputtering target composed thereof; a transparent conductive film formed by using such a sputtering target; and a transparent electrode composed of such a transparent conductive film.
    Type: Application
    Filed: September 15, 2006
    Publication date: October 21, 2010
    Inventors: Koki Yano, Kazuyoshi Inoue, Nobuo Tanaka, Tokie Tanaka