Patents by Inventor Katsuhisa Homma

Katsuhisa Homma 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: 20170329023
    Abstract: According to the embodiment, a radiation detector includes an array substrate, a scintillator layer, a wall body, a filling body, and a moisture-resistant body. A peripheral portion of the scintillator layer has a tapered shape in a direction toward outside. The filling body adheres to an inner side surface of the wall body. The filling body is close or adhering to the peripheral portion of the scintillator layer having the tapered shape. The filling body fills a space above the peripheral portion of the scintillator layer. A height of an upper surface of the filling body is close to a height of an upper surface of the wall body.
    Type: Application
    Filed: December 5, 2016
    Publication date: November 16, 2017
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuhisa HOMMA, Koji TAKATORI, Hiroshi Horiuchi, Satoshi Ichikawa
  • Patent number: 9810791
    Abstract: According to the embodiment, a radiation detector includes an array substrate including a photoelectric conversion element, a scintillator layer formed on the photoelectric conversion element and converting radiation to fluorescence, and a moisture-proof layer including a surface-smoothing layer which is a continuous film formed to cover the scintillator layer and including at least an organic resin material as a main component and a moisture-proof layer which is a continuous film formed on a surface of the smoothed layer by direct film formation and consisting from inorganic material.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: November 7, 2017
    Assignee: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventor: Katsuhisa Homma
  • Publication number: 20170254908
    Abstract: According to the embodiment, a radiation detector includes an array substrate, a scintillator layer, a wall body, and a filled portion, where the array substrate includes a substrate and multiple photoelectric conversion elements, the multiple photoelectric conversion elements are provided on one surface side of the substrate, the scintillator layer includes a first fluorescent material and is provided on the multiple photoelectric conversion elements, the wall body surrounds the scintillator layer and is provided on the one surface side of the substrate, and the filled portion includes a second fluorescent material and is provided between the scintillator layer and the wall body. The scintillator layer includes a tilted portion in a peripheral edge portion of the scintillator layer; and a thickness of the tilted portion gradually decreases toward the outer side of the scintillator layer. The filled portion is provided on the tilted portion.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 7, 2017
    Applicant: Toshiba Electron Tubes & devices Co., Ltd
    Inventors: Katsuhisa HOMMA, Koji TAKATORI
  • Publication number: 20160091616
    Abstract: According to the embodiment, a radiation detector includes an array substrate including a photoelectric conversion element, a scintillator layer formed on the photoelectric conversion element and converting radiation to fluorescence, and a moisture-proof layer including a surface-smoothing layer which is a continuous film formed to cover the scintillator layer and including at least an organic resin material as a main component and a moisture-proof layer which is a continuous film formed on a surface of the smoothed layer by direct film formation and consisting from inorganic material.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 31, 2016
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventor: Katsuhisa HOMMA
  • Patent number: 9223032
    Abstract: Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: December 29, 2015
    Assignee: TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Shinetsu Fujieda, Katsuhisa Homma, Akiko Suzuki, Tatsuoki Kono
  • Patent number: 9158006
    Abstract: Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: October 13, 2015
    Assignee: TOSHIBA ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Shinetsu Fujieda, Katsuhisa Homma, Akiko Suzuki, Tatsuoki Kono
  • Patent number: 8853808
    Abstract: According to one embodiment, a radiation detector includes a substrate, a scintillator layer, a moisture-proof body and an adhesive layer. The substrate is partitioned into at least an active area and a bonding area. The substrate includes a photoelectric conversion element located in the active area and configured to convert fluorescence to an electrical signal, an organic resin protective layer located at an outermost layer in the active area, and an inorganic protective film located at an outermost layer of the bonding area. The scintillator layer is formed on the organic resin protective layer so as to cover the photoelectric conversion element and configured to convert radiation to the fluorescence. The moisture-proof body is formed so as to cover the scintillator layer. The adhesive layer is formed on the inorganic protective film and bonds the moisture-proof body to the substrate.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: October 7, 2014
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventor: Katsuhisa Homma
  • Publication number: 20140217296
    Abstract: Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide.
    Type: Application
    Filed: April 4, 2014
    Publication date: August 7, 2014
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Shinetsu Fujieda, Katsuhisa Homma, Akiko Suzuki, Tatsuoki Kono
  • Publication number: 20130313667
    Abstract: According to one embodiment, a radiation detector includes a substrate, a scintillator layer, a moisture-proof body and an adhesive layer. The substrate is partitioned into at least an active area and a bonding area. The substrate includes a photoelectric conversion element located in the active area and configured to convert fluorescence to an electrical signal, an organic resin protective layer located at an outermost layer in the active area, and an inorganic protective film located at an outermost layer of the bonding area. The scintillator layer is formed on the organic resin protective layer so as to cover the photoelectric conversion element and configured to convert radiation to the fluorescence. The moisture-proof body is formed so as to cover the scintillator layer. The adhesive layer is formed on the inorganic protective film and bonds the moisture-proof body to the substrate.
    Type: Application
    Filed: August 1, 2013
    Publication date: November 28, 2013
    Applicants: Toshiba Electron Tubes & Devices Co., Ltd., Kabushiki Kaisha Toshiba
    Inventor: Katsuhisa Homma
  • Patent number: 8497481
    Abstract: According to one embodiment, a radiation detector comprises an array substrate having thereon a photoelectric conversion element for converting fluorescence into an electrical signal and having the outermost layer covered with a protective film, a scintillator layer provided on the protective film and converting incident radiation into fluorescence, and a reflective layer filmed by coating and drying paste-like material containing light-scattering particles and a binder provided on the scintillator layer, wherein the protective film is made of a thermoplastic resin having a softening point not higher than the film formation temperature of the scintillator layer and extending on the array substrate over an area of the reflective layer.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 30, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Yuichi Shinba, Katsuhisa Homma
  • Publication number: 20120267539
    Abstract: According to one embodiment, a radiation detector comprises an array substrate having thereon a photoelectric conversion element for converting fluorescence into an electrical signal and having the outermost layer covered with a protective film, a scintillator layer provided on the protective film and converting incident radiation into fluorescence, and a reflective layer filmed by coating and drying paste-like material containing light-scattering particles and a binder provided on the scintillator layer, wherein the protective film is made of a thermoplastic resin having a softening point not higher than the film formation temperature of the scintillator layer and extending on the array substrate over an area of the reflective layer.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 25, 2012
    Applicants: TOSHIBA ELECTRON TUBES & DEVICES CO., LTD., KABUSHIKI KAISHA TOSHIBA
    Inventors: Yuichi SHINBA, Katsuhisa HOMMA
  • Patent number: 8158949
    Abstract: A radiation detector characterized by includes a photoelectric conversion element, a scintillation layer which converts radioactive rays to fluorescence, the scintillation layer being formed on the photoelectric conversion element, and a reflective film formed on the scintillation layer, the reflective film containing light-scattering particles for reflecting the fluorescence from the scintillation layer and a binder material binding the light-scattering particles, and having depletion portions without being filled with the binder material, the depletion portions being formed in a periphery of the light-scattering particles.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: April 17, 2012
    Assignee: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuhisa Homma, Shinetsu Fujieda
  • Patent number: 7982190
    Abstract: According to one embodiment, a radiation detector includes, a substrate, a scintillator layer, a moistureproof body, and an adhesion layer. The substrate comprises a photoelectric conversion element. The scintillator layer is formed on the substrate and converts radiation into fluorescence. The moistureproof body comprises a flange portion in a periphery thereof, the moistureproof body being deep enough to contain at least the scintillator layer. The adhesion layer causes the substrate and the flange portion of the moistureproof body to adhere to each other in a sealed manner.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: July 19, 2011
    Assignee: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuhisa Homma, Hitoshi Chiyoma, Shinetsu Fujieda, Keiko Sakai, Masakuni Ikagawa, Akiko Suzuki
  • Publication number: 20110114847
    Abstract: Provided is a composition for reflective film comprising a polyvinyl acetal resin, an epoxidized vegetable oil, a solvent, a coupling agent and titanium oxide.
    Type: Application
    Filed: July 13, 2009
    Publication date: May 19, 2011
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Shinetsu Fujieda, Katsuhisa Homma, Akiko Suzuki, Tatsuoki Kono
  • Publication number: 20100224784
    Abstract: According to one embodiment, a radiation detector includes, a substrate, a scintillator layer, a moistureproof body, and an adhesion layer. The substrate comprises a photoelectric conversion element. The scintillator layer is formed on the substrate and converts radiation into fluorescence. The moistureproof body comprises a flange portion in a periphery thereof, the moistureproof body being deep enough to contain at least the scintillator layer. The adhesion layer causes the substrate and the flange portion of the moistureproof body to adhere to each other in a sealed manner.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 9, 2010
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuhisa Homma, Hitoshi Chiyoma, Shinetsu Fujieda, Keiko Sakai, Masakuni Ikagawa, Akiko Suzuki
  • Publication number: 20100116997
    Abstract: A radiation detector characterized by includes a photoelectric conversion element, a scintillation layer which converts radioactive rays to fluorescence, the scintillation layer being formed on the photoelectric conversion element, and a reflective film formed on the scintillation layer, the reflective film containing light-scattering particles for reflecting the fluorescence from the scintillation layer and a binder material binding the light-scattering particles, and having depletion portions without being filled with the binder material, the depletion portions being formed in a periphery of the light-scattering particles.
    Type: Application
    Filed: January 25, 2010
    Publication date: May 13, 2010
    Applicant: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuhisa Homma, Shinetsu Fujieda
  • Publication number: 20090084961
    Abstract: A radiation detector includes an electrode substrate having plural photoelectric transfer elements which convert visible light into electrical signals, a scintillator layer formed on the electrode substrate and converting radial rays into visible light, and a protective film includes a drying agent film and a moisture-proof film. The drying agent film is formed on at least the scintillator layer. The moisture-proof film is formed on the drying agent film.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Inventors: Junichi TONOTANI, Masatoshi HIGUCHI, Keiko SAKAI, Katsuhisa HOMMA, Atsuya YOSHIDA
  • Patent number: 7276706
    Abstract: A radiation detector comprises pixel electrodes which collect charges, a photoelectric converting layer which is provided on the pixel electrodes and which converts incident radiation into the charges, and which contains at least one or more kinds of heavy metal halide (ABn:A=heavy metal, B=halogen, n=either one of 1, 2, and 3) and at least one or more kinds of halogen (B2) respectively, and an electrode layer which is provided on the photoelectric converting layer opposite to the pixel electrodes.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: October 2, 2007
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Yoshiko Mikoshiba, Hiroshi Aida, Yasuaki Kawasaki, Hiroshi Onihashi, Katsuhisa Homma
  • Publication number: 20070051895
    Abstract: A radiation detector comprises pixel electrodes which collect charges, a photoelectric converting layer which is provided on the pixel electrodes and which converts incident radiation into the charges, and which contains at least one or more kinds of heavy metal halide (ABn:A=heavy metal, B=halogen, n=either one of 1, 2, and 3) and at least one or more kinds of halogen (B2) respectively, and an electrode layer which is provided on the photoelectric converting layer opposite to the pixel electrodes.
    Type: Application
    Filed: November 9, 2006
    Publication date: March 8, 2007
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Yoshiko Mikoshiba, Hiroshi Aida, Yasuaki Kawasaki, Hiroshi Onihashi, Katsuhisa Homma
  • Patent number: 7053380
    Abstract: An X-ray detector comprising a scintillator layer (38) provided for each pixel and adapted for converting X radiation into light, a storage capacitor (15) for storing, as electric charge, the light converted in the scintillator layer (38), and a partition layer (39) partitioning the adjoining scintillator layers (38) provided to the respective pixels. The scintillator layer (38) contains a fluorescent material (I), the partition layer contains a second phosphor (P2) having optical characteristics different from those of the fluorescent material (IP1). The wavelength of the fluorescent light emitted from the second phosphor (P2) includes a component which is equal to or longer than the shortest wavelength of the fluorescent light emitted from the fluorescent material (IP1).
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: May 30, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhisa Homma, Hiroshi Aida, Kenichi Ito, Akiko Fujisawa, Hiroshi Onihashi