Patents by Inventor Tetsuo Shibanuma

Tetsuo Shibanuma 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: 20150060837
    Abstract: An organic electroluminescence device including a lower electrode disposed on a substrate, an organic layer having at least a light emission layer and disposed above the lower electrode, and upper electrode having a transparent conductive film and disposed above the organic layer, in which the device has an electron injecting layer between the organic layer and the upper electrode. The electron injecting layer has a buffer layer comprising an insulative material and a mixed layer comprising an organic material that has an electron transporting property and a metal material that has an electron injecting property.
    Type: Application
    Filed: November 4, 2014
    Publication date: March 5, 2015
    Inventors: Tetsuo Shibanuma, Eisuke Matsuda, Yasunori Kijima, Hirofumi Nakamura, Shigeyuki Matsunami
  • Patent number: 8906517
    Abstract: An organic electroluminescence device including a lower electrode disposed on a substrate, an organic layer having at least a light emission layer and disposed above the lower electrode, and upper electrode having a transparent conductive film and disposed above the organic layer, in which the device has an electron injecting layer between the organic layer and the upper electrode. The electron injecting layer has a buffer layer comprising an insulative material and a mixed layer comprising an organic material that has an electron transporting property and a metal material that has an electron injecting property.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: December 9, 2014
    Assignee: Sony Corporation
    Inventors: Tetsuo Shibanuma, Eisuke Matsuda, Yasunori Kijima, Hirofumi Nakamura, Shigeyuki Matsunami
  • Patent number: 8106859
    Abstract: Disclosed herein is a light emitting device, including: a light emitting diode; an sealing resin member having an arrangement face and configured to seal the light emitting diode; and a lens disposed on the arrangement face of the sealing resin member and formed so as to have a circular shape as viewed in the direction of an optical axis of light emitted from the light emitting diode, the lens having a concave portion formed at a central portion in such a manner as to be concave toward the sealing resin member.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 31, 2012
    Assignee: Sony Corporation
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Patent number: 8104910
    Abstract: A light emitting device includes a plurality of light emitting diodes, a plurality of sealing resins, and a lens body formed in substantially a shape of a flat plate for guiding the light. The lens body is also disposed in a state of extending over the disposition surface of each sealing resin. The lens body includes a plurality of lens parts and a plurality of light guiding parts for reflecting the light by inside surfaces of the light guiding parts. The plurality of lens parts and the plurality of light guiding parts of the lens body are formed integrally with each other. The lens parts are disposed on the respective disposition surfaces of the sealing resins, and a plurality of light emitting function parts for sending out the light reflected by the inside surfaces of the light guiding parts are formed in the light guiding parts.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 31, 2012
    Assignee: Sony Corporation
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Patent number: 7736754
    Abstract: In a stacked display device with light-emitting units composed of organic layers and stacked together, the use of a stable material in at least a portion of a charge generation layer makes it possible to achieve improvements in environmental stability and also to attain an improvement in the efficiency of injection of charges from the charge generation layer into the light-emitting units. The display device can be readily fabricated. In a display device (11) provided with a plurality of light-emitting units (14-1)(14-2), each of which includes at least an organic light-emitting layer (14c), stacked together between a cathode (16) and an anode (13), and also with a charge generation layer (15) held between the respective light-emitting units (14-1)(14-2), at least a portion of the charge generation layer (15) is composed of an oxide or fluoride which contains at least one of alkali metals and alkaline earth metals.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: June 15, 2010
    Assignee: Sony Corporation
    Inventors: Yasunori Kijima, Tetsuo Shibanuma, Shigeyuki Matsunami, Yoichi Tomo
  • Publication number: 20080303757
    Abstract: Disclosed herein is a light emitting device, including: a light emitting diode; an sealing resin member having an arrangement face and configured to seal the light emitting diode; and a lens disposed on the arrangement face of the sealing resin member and formed so as to have a circular shape as viewed in the direction of an optical axis of light emitted from the light emitting diode, the lens having a concave portion formed at a central portion in such a manner as to be concave toward the sealing resin member.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: SONY CORPORATION
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Publication number: 20080304265
    Abstract: A light emitting device includes a plurality of light emitting diodes, a plurality of sealing resins, and a lens body formed in substantially a shape of a flat plate for guiding the light. The lens body is also disposed in a state of extending over the disposition surface of each sealing resin. The lens body includes a plurality of lens parts and a plurality of light guiding parts for reflecting the light by inside surfaces of the light guiding parts. The plurality of lens parts and the plurality of light guiding parts of the lens body are formed integrally with each other. The lens parts are disposed on the respective disposition surfaces of the sealing resins, and a plurality of light emitting function parts for sending out the light reflected by the inside surfaces of the light guiding parts are formed in the light guiding parts.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: Sony Corporation
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Publication number: 20070181887
    Abstract: In a stacked display device with light-emitting units composed of organic layers and stacked together, the use of a stable material in at least a portion of a charge generation layer makes it possible to achieve improvements in environmental stability and also to attain an improvement in the efficiency of injection of charges from the charge generation layer into the light-emitting units. The display device can be readily fabricated. In a display device (11) provided with a plurality of light-emitting units (14-1)(14-2), each of which includes at least an organic light-emitting layer (14c), stacked together between a cathode (16) and an anode (13), and also with a charge generation layer (15) held between the respective light-emitting units (14-1)(14-2), at least a portion of the charge generation layer (15) is composed of an oxide or fluoride which contains at least one of alkali metals and alkaline earth metals.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 9, 2007
    Inventors: Yasunori Kijima, Tetsuo Shibanuma, Shigeyuki Matsunami, Yoichi Tomo
  • Patent number: 7186469
    Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided wherein R1 and R2 may be the same or different and independently represent a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, or a substituted or unsubstituted, saturated or unsaturated hydrocarbon group provided that at least one of R1 and R2 has at least two carbon atoms, and wherein Ar1 and Ar2 may be the same or different and independently represent a substituted or unsubstituted aryl group. A process for preparing the compound is also provided wherein bathophenanthroline and an organolithium compound are subjected to nucleophilic substitution reaction to obtain the compound of the above formula [I] or [II].
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: March 6, 2007
    Assignee: Sony Corporation
    Inventors: Tetsuo Shibanuma, Yasunori Kijima, Nobutoshi Asai, Shinichiro Tamura
  • Publication number: 20060220534
    Abstract: An organic electroluminescence device including a lower electrode disposed on a substrate, an organic layer having at least a light emission layer and disposed above the lower electrode, and upper electrode having a transparent conductive film and disposed above the organic layer, in which the device has an electron injecting layer between the organic layer and the upper electrode. The electron injecting layer has a buffer layer comprising an insulative material and a mixed layer comprising an organic material that has an electron transporting property and a metal material that has an electron injecting property.
    Type: Application
    Filed: April 3, 2006
    Publication date: October 5, 2006
    Inventors: Tetsuo Shibanuma, Eisuke Matsuda, Yasunori Kijima, Hirofumi Nakamura, Shigeyuki Matsunami
  • Patent number: 6972334
    Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided wherein R1 and R2 may be the same or different and independently represent a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, or a substituted or unsubstituted, saturated or unsaturated hydrocarbon group provided that at least one of R1 and R2 has at least two carbon atoms, and wherein Ar1 and Ar2 may be the same or different and independently represent a substituted or unsubstituted aryl group. A process for preparing the compound is also provided wherein bathophenanthroline and an organolithium compound are subjected to nucleophilic substitution reaction to obtain the compound of the above formula [I] or [II].
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: December 6, 2005
    Assignee: Sony Corporation
    Inventors: Tetsuo Shibanuma, Yasunori Kijima, Nobutoshi Asai, Shinichiro Tamura
  • Publication number: 20050154208
    Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided wherein R1 and R2 may be the same or different and independently represent a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, or a substituted or unsubstituted, saturated or unsaturated hydrocarbon group provided that at least one of R1 and R2 has at least two carbon atoms, and wherein Ar1 and Ar2 may be the same or different and independently represent a substituted or unsubstituted aryl group. A process for preparing the compound is also provided wherein bathophenanthroline and an organolithium compound are subjected to nucleophilic substitution reaction to obtain the compound of the above formula [I] or [II].
    Type: Application
    Filed: February 21, 2005
    Publication date: July 14, 2005
    Inventors: Tetsuo Shibanuma, Yasunori Kijima, Nobutoshi Asai, Shinichiro Tamura
  • Patent number: 6916552
    Abstract: An organic electroluminescent device capable of blue emission with a high color purity, and a display unit capable of full-color display with high color expressivity by using the organic electroluminescent device are provided. The organic electroluminescent device includes at least a hole transportation layer and a luminescent layer held between a lower electrode to become an anode and an upper electrode to become a cathode in a state of lamination in that order from the anode side. The luminescent layer is made of a spiro compound, and the hole transportation layer is made of triphenylamine tetramer. Furthermore, the display unit includes organic electroluminescent devices as blue-emitting elements arrayed for a plurality of pixels.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: July 12, 2005
    Assignee: Sony Corporation
    Inventors: Naoyuki Ueda, Ichinori Takada, Tetsuo Shibanuma, Mari Ichimura, Shinichiro Tamura
  • Publication number: 20050073641
    Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided wherein R1 and R2 may be the same or different and independently represent a linear, branched or cyclic, saturated or unsaturated hydrocarbon group, or a substituted or unsubstituted, saturated or unsaturated hydrocarbon group provided that at least one of R1 and R2 has at least two carbon atoms, and wherein Ar1 and Ar2 may be the same or different and independently represent a substituted or unsubstituted aryl group. A process for preparing the compound is also provided wherein bathophenanthroline and an organolithium compound are subjected to nucleophilic substitution reaction to obtain the compound of the above formula [I] or [II].
    Type: Application
    Filed: September 5, 2003
    Publication date: April 7, 2005
    Inventors: Tetsuo Shibanuma, Yasunori Kijima, Nobutoshi Asai, Shinichiro Tamura
  • Publication number: 20040265626
    Abstract: A novel bathophenanthroline compound of the general formula [I] or [II] is provided 1
    Type: Application
    Filed: March 11, 2004
    Publication date: December 30, 2004
    Inventors: Tetsuo Shibanuma, Yasunori Kijima, Nobutoshi Asai, Shinichiro Tamura
  • Patent number: 6524728
    Abstract: An organic electroluminescent device has a single hetero structure comprising, on a glass substrate, an ITO transparent electrode, a hole transport layer, an electron transport layer and a metal electrode superposed in this. order wherein a hole-blocking layer containing a bathophenanthroline derivative of the following general formula is interposed between the hole transport layer and the electron transport layer. In this way, the electron-hole-re-combination in the hole transporting luminescent layer can be promoted.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: February 25, 2003
    Assignee: Sony Corporation
    Inventors: Yasunori Kijima, Tetsuo Shibanuma, Nobutoshi Asai, Shinichiro Tamura
  • Publication number: 20020122900
    Abstract: An organic electroluminescent device capable of blue emission with a high color purity, and a display unit capable of full-color display with high color expressivity by using the organic electroluminescent device are provided. The organic electroluminescent device includes at least a hole transportation layer and a luminescent layer held between a lower electrode to become an anode and an upper electrode to become a cathode in a state of lamination in that order from the anode side. The luminescent layer is made of a spiro compound, and the hole transportation layer is made of triphenylamine tetramer. Furthermore, the display unit includes organic electroluminescent devices as blue-emitting elements arrayed for a plurality of pixels.
    Type: Application
    Filed: February 6, 2002
    Publication date: September 5, 2002
    Inventors: Naoyuki Ueda, Ichinori Takada, Tetsuo Shibanuma, Mari Ichimura, Shinichiro Tamura