Patents by Inventor Tadao Shibuya

Tadao Shibuya 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).

  • Publication number: 20090090914
    Abstract: A transparent semiconductor thin film 40 having low carrier concentration and a large energy band gap is produced by forming a thin film which contains indium oxide and an oxide of a positive divalent element, and then oxidizing or crystallizing the thin film.
    Type: Application
    Filed: November 16, 2006
    Publication date: April 9, 2009
    Inventors: Koki Yano, Kazuyoshi Inoue, Yukio Shimane, Tadao Shibuya, Masahiro Yoshinaka
  • Publication number: 20070247066
    Abstract: The purpose is to remove surface-defective layer existing on the surface of an anode on a CCM substrate, protect the anode surface, prevent a drive voltage of an organic EL element from rising, and maintain uniformity of luminescence. On a substrate (12) a CCM layer (14) for converting light wavelength is formed. On the CCM layer (14) an anode (16) of IZO is formed. On the anode (16) a surface protective layer (18) containing an inorganic compound is formed by an inductively coupled RF plasma support magnetron sputtering. A preferable inorganic compound is SiO2. The surface defective layer of the anode (16) can be removed by the sputtering and the state of being removed can be held by the inorganic compound. Therefore the electrical stability of the anode (16) can be maintained for a long time, thereby improving the display quality of an organic EL display (100).
    Type: Application
    Filed: April 6, 2004
    Publication date: October 25, 2007
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokairin, Yoshikazu Nagasaki, Tadao Shibuya
  • Patent number: 7270586
    Abstract: An organic EL element comprising; an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, [In3d5/2]h/[In3d5/2]n, is from 0.9 to 1.2 wherein [In3d5/2]h is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the surface of the anode, and [In3d5/2]n is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: September 18, 2007
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya, Kazuyoshi Inoue
  • Publication number: 20070103055
    Abstract: An organic electroluminescent device including a cathode 50, an anode 20, and an emitting layer interposed between the cathode 50 and the anode 20, at least a part of the anode 20 in contact with the emitting layer 40 containing at least one element selected from lanthanum, cerium, neodymium, samarium, and europium, and at least one element selected from chromium, tungsten, tantalum, niobium, silver, palladium, copper, nickel, cobalt, molybdenum, platinum, and silicon. Since holes are efficiently injected into the emitting layer from the anode, the drive voltage of the organic EL device can be decreased, whereby the lifetime of the organic EL device can be increased.
    Type: Application
    Filed: December 8, 2004
    Publication date: May 10, 2007
    Applicant: IDEMITSU LOSAN CO., LTD.
    Inventors: Shigekazu Tomai, Kazuyoshi Inoue, Tadao Shibuya, Toshio Sakai, Masato Matsubara
  • Patent number: 6963383
    Abstract: An electrode substrate comprising; an electrode comprising a compound containing an In atom and a substrate body, wherein a half band width ratio [In3d5/2]h/[In3d5/2]n is from 0.9 to 1.2 wherein [In3d5/2]h is a half band width of a 3d5/2 orbit spectral peak of an In atom in the surface of the electrode, and [In3d5/2]n is a half band width of a 3d5/2 orbit spectral peak of an In atom in the interior of the electrode, the spectral peaks being measured by X-ray photoelectron spectroscopy: and the method for the production thereof.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: November 8, 2005
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya, Kazuyoshi Inoue
  • Publication number: 20050085152
    Abstract: An organic EL element comprising; an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, [In3d5/2]h/[In3d5/2]n, is from 0.9 to 1.2 wherein [In3d5/2]h is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the surface of the anode, and [In3d5/2]n is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 21, 2005
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya, Kazuyoshi Inoue
  • Publication number: 20040251815
    Abstract: An organic EL element comprising; an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, [In3d5/2]h/[In3d5/2]n, is from 0.9 to 1.2 wherein [In3d5/2]h is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the surface of the anode, and [In3d5/2]n is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya, Kazuyoshi Inoue
  • Patent number: 6828045
    Abstract: An organic EL element comprising: an anode, a cathode, and an organic layer sandwiched therebetween containing at least an emitting layer, wherein a ratio, [In3d5/2]h/[In3d5/2]n, is from 0.9 to 1.2 wherein [In3d5/2]h is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the surface of the anode, and [In3d5/2]n is the half band width of a spectral peak derived from a 3d5/2 orbit of an In atom in the interior of the anode, the spectral peaks being measured by X-ray photoelectron spectroscopy (XPS): and the method for the production thereof.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: December 7, 2004
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya
  • Publication number: 20040066484
    Abstract: An electrode substrate comprising; an electrode comprising a compound containing an In atom and a substrate body, wherein a half band width ratio [In3d5/2]h/[In3d5/2]n is from 0.9 to 1.2 wherein [In3d5/2]h is a half band width of a 3d5/2 orbit spectral peak of an In atom in the surface of the electrode, and [In3d5/2]n is a half band width of a 3d5/2 orbit spectral peak of an In atom in the interior of the electrode, the spectral peaks being measured by X-ray photoelectron spectroscopy: and the method for the production thereof.
    Type: Application
    Filed: June 13, 2003
    Publication date: April 8, 2004
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroshi Tokailin, Yoshikazu Nagasaki, Tadao Shibuya, Kazuyoshi Inoue
  • Patent number: 6669830
    Abstract: In a sputtering target comprising at least indium oxide and zinc oxide, the atomic ratio represented by In/(In+Zn) is set to a value within the range of 0.75 to 0.97, a hexagonal layered compound represented by In2O3(ZnO)m wherein m is an integer of 2 to 20 is contained, and the crystal grain size of the hexagonal layered compound is set to a value of 5 &mgr;m or less.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: December 30, 2003
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuyoshi Inoue, Tadao Shibuya, Akira Kaijo
  • Patent number: 6389049
    Abstract: A discharge circuit for pulsed laser comprising a power source, main discharge electrodes for generating a laser beam, a main discharge capacitor charged with electrical charges for generating the main discharge between the main discharge electrodes, and a switching circuit for performing switching operations to charge the main discharge capacitor with electrical charges supplied from the power source in a prescribed repetition cycle, is provided, in parallel to the main discharge capacitors, with a circuit element for consuming or grounding the reverse current from the power source caused by overshoot generated directly after the main discharge, thereby attaining stable laser output without ill effects from overshoot voltage generated directly following discharge.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: May 14, 2002
    Assignees: Komatsu Ltd., Kabushiki Kaisha Meidensha
    Inventors: Daisuke Yoshida, Toshihiro Nishisaka, Yuichi Takabayashi, Takashi Matsunaga, Hisashi Yanase, Tadao Shibuya, Yasuo Kataoka, Masayuki Tani, Eiji Sasamoto, Hiroyuki Hiyoshi, Kiyoshi Hara
  • Publication number: 20020003820
    Abstract: A discharge circuit for pulsed laser comprising a power source, main discharge electrodes for generating a laser beam, a main discharge capacitor charged with electrical charges for generating the main discharge between the main discharge electrodes, and a switching circuit for performing switching operations to charge the main discharge capacitor with electrical charges supplied from the power source in a prescribed repetition cycle, is provided, in parallel to the main discharge capacitors, with a circuit element for consuming or grounding the reverse current from the power source caused by overshoot generated directly after the main discharge, thereby attaining stable laser output without ill effects from overshoot voltage generated directly following discharge.
    Type: Application
    Filed: October 5, 1998
    Publication date: January 10, 2002
    Inventors: DAISUKE YOSHIDA, TOSHIHIRO NISHISAKA, YUICHI TAKABAYASHI, TAKASHI MATSUNAGA, HISASHI YANASE, TADAO SHIBUYA, YASUO KATAOKA, MASAYUKI TANI, EIJI SASAMOTO, HIROYUKI HIYOSHI, KIYOSHI HARA
  • Patent number: 4604530
    Abstract: A commercial AC source is connected to a load through the main line (1) via an AC switch (1a) only when the AC source is normal, and an inverter power source (10) is connected to the load through the auxiliary line (2) whether the AC source is normal or abnormal. In the case when the AC source changes from abnormal to normal, since the AC source is connected to the main line (1) after the inverter phase has matched the AC source phase, substantially no effective power is transmitted from the main line to the auxiliary line or vice versa, while a required power is being supplied from the AC source to the load (not from the inverter). Further, since an inverter inductor (L.sub.i) and a main line inductor (L.sub.l) are connected in the main and auxiliary lines, respectively, even if the AC source voltage fluctuates, it is possible to regulate the load voltage at a constant level by virtue of an inverter current flowing from the AC source to the inverter source or vice versa.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: August 5, 1986
    Assignee: Kabushiki Kaisha Meidensha
    Inventor: Tadao Shibuya
  • Patent number: 4347504
    Abstract: A device for detecting a burnt-out fuse in a fuse box accommodating a plurality of parallelly arranged blade-type fuses. The device comprises an insulative support body mounted to the fuse box, an electrically conductive rubber member carried on said support body and a light emitting element connected between said rubber bar member and ground. The rubber bar member faces the output sides of the blade type fuses accommodated in the fuse box such that the rubber bar member acts as a contact means ready for depressing.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: August 31, 1982
    Assignees: Nissan Motor Co., Ltd., Yazaki Corporation
    Inventors: Satoru Murofushi, Tadao Shibuya, Shinichi Kato, Mitsuo Endo