Patents by Inventor Toshiya Yonehara

Toshiya Yonehara 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: 9343705
    Abstract: According to one embodiment, a light emitting element includes a first electrode, a second electrode, a light emitting layer, and a conductive section. The second electrode is provided opposite to the first electrode. The light emitting layer is provided between the first electrode and the second electrode. The second electrode includes a plurality of layers, and the plurality of layers include a first layer. The conductive section pierces the first layer in thickness direction. The conductive section includes a conductive material. Each of the plurality of layers includes at least one of Al, Al alloy, Ag, Ag alloy, alkali metals, and alkaline-earth metals and being different from one another.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: May 17, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiya Yonehara, Tomio Ono, Tomoaki Sawabe, Keiji Sugi, Daimotsu Kato, Shintaro Enomoto
  • Publication number: 20150188090
    Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a reflective layer, an organic light emitting layer, a second electrode, and an optical buffer layer. The reflective layer is provided to face the first electrode. The organic light emitting layer is provided between the first electrode and the reflective layer. The second electrode is provided between the organic light emitting layer and the reflective layer. The optical buffer layer is provided between the second electrode and the reflective layer. The refractive index of the optical buffer layer is lower than a refractive index of the organic light emitting layer. The optical buffer layer includes a gas filled between the second electrode and the reflective layer.
    Type: Application
    Filed: March 6, 2015
    Publication date: July 2, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshiya YONEHARA, Tomio ONO, Tomoaki SAWABE, Shintaro ENOMOTO
  • Publication number: 20150188094
    Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a second electrode provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the second electrode, and a protrusion. The protrusion is provided at least one of between the first electrode and the organic light emitting layer and between the organic light emitting layer and the second electrode.
    Type: Application
    Filed: March 11, 2015
    Publication date: July 2, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tomoaki SAWABE, Tomio ONO, Toshiya YONEHARA, Shintaro ENOMOTO
  • Publication number: 20150179982
    Abstract: According to one embodiment, an organic electroluminescent element includes a first electrode, a reflective layer provided opposite to the first electrode, an organic light emitting layer provided between the first electrode and the reflective layer, a second electrode provided between the organic light emitting layer and the reflective layer, an optical buffer layer provided between the second electrode and the reflective layer, and a plurality of light extraction portions. The plurality of light extraction portions are provided between the second electrode and the organic light emitting layer. The plurality of light extraction portions are projected from the side provided with the second electrode of the optical buffer layer into the optical buffer layer. The light extraction portions have a refractive index different from a refractive index of the optical buffer layer.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: Toshiya YONEHARA, Tomio ONO, Tomoaki SAWABE, Shintaro ENOMOTO
  • Publication number: 20150179983
    Abstract: According to one embodiment, a light emitting element includes a first electrode, a second electrode, a light emitting layer, and a conductive section. The second electrode is provided opposite to the first electrode. The light emitting layer provided between the first electrode and the second electrode. The second electrode includes a plurality of layers. The conductive section pierces the first layer in thickness direction. The conductive section includes a conductive material. The second electrode includes a plurality of layers. Each of the plurality of layers includes at least one selected from the group consisting of Al, Al alloy, Ag, Ag alloy, alkali metals, and alkaline-earth metals and being different from one another.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: TOSHIYA YONEHARA, TOMIO ONO, TOMOAKI SAWABE, KEIJI SUGI, DAIMOTSU KATO, SHINTARO ENOMOTO
  • Patent number: 9029853
    Abstract: According to one embodiment, a display device includes a first insulating layer, a second insulating layer, a pixel electrode, a light emitting layer, an opposite electrode and a pixel circuit. The second insulating layer is provided on the first insulating layer. The pixel electrode is provided on the second insulating layer and light-transmissive. The light emitting layer is provided on the pixel electrode. The opposite electrode is provided on the light emitting layer. The circuit is provided between the first insulating layer and the second insulating layer, includes an interconnect supplied with a drive current, and is configured to supply the drive current to the pixel electrode. The circuit is connected to the pixel electrode. The interconnect has a first region overlaying the pixel electrode when projected onto a plane parallel to the first insulating layer. The interconnect has an opening in the first region.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuyoshi Saito, Tomomasa Ueda, Toshiya Yonehara, Hajime Yamaguchi, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano
  • Patent number: 9018620
    Abstract: According to one embodiment, an organic electroluminescent light emitting device includes a transparent substrate, an intermediate layer, a first electrode, an organic light emitting layer, and a second electrode. The intermediate layer includes a plurality of fine particles and a flattened layer. The fine particles are adhered to a major surface of the transparent substrate. The flattened layer covers the fine particles and has a refractive index different from a refractive index of the fine particles. The flattened layer is transparent. The first electrode is provided on the intermediate layer. The first electrode is transparent. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: April 28, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoaki Sawabe, Tomio Ono, Keiji Sugi, Toshiya Yonehara, Shintaro Enomoto
  • Patent number: 8902383
    Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a second electrode, an organic light emitting layer and an optical layer. The first electrode has a first major surface and a second major surface opposite to the first major surface and is light transmissive. The second electrode faces a portion of the first major surface. The organic light emitting layer is provided between the first electrode and the second electrode. The organic light emitting layer and the first electrode are disposed between the optical layer and the second electrode. The optical layer is able to transit between a first state where a traveling direction of light emitted from the organic light emitting layer is changed and a second state having a smaller degree of the change in the traveling direction of the light than the first state.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 2, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiji Sugi, Shintaro Enomoto, Tomio Ono, Tomoaki Sawabe, Yasushi Shinjo, Yukitami Mizuno, Akio Amano, Tomoko Sugizaki, Toshiya Yonehara, Daimotsu Kato
  • Patent number: 8884278
    Abstract: According to one embodiment, an organic electroluminescence device includes a first electrode, a second electrode, a first organic layer and a second organic layer. The second electrode includes a metal. The first organic layer is provided between the first electrode and the second electrode. The first organic layer is configured to emit light. The second organic layer is provided between the first organic layer and the second electrode. A refractive index of the second organic layer in a thickness direction for the light is lower than a refractive index of the first organic layer for the light.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 11, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiya Yonehara, Tomio Ono, Tomoaki Sawabe, Keiji Sugi, Daimotsu Kato, Shintaro Enomoto
  • Patent number: 8853936
    Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a plurality of second electrodes and an organic light-emitting layer. The first electrode includes a first major surface and is optical transparency. The second electrodes extend in a first direction parallel to the first major surface and are separated from each other in a second direction parallel to the first major surface and perpendicular to the first direction. An optical transmittance of the second electrodes is lower than an optical transmittance of the first electrode. A distance along the second direction between a line extending in the first direction and a side surface of each of the second electrodes continuously increases and decreases along the first direction. The side surface is unparallel to the first major surface. The organic light-emitting layer is provided between the first electrode and the second electrodes.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: October 7, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoko Sugizaki, Daimotsu Kato, Keiji Sugi, Tomio Ono, Yasushi Shinjo, Yukitami Mizuno, Akio Amano, Tomoaki Sawabe, Toshiya Yonehara, Shintaro Enomoto
  • Patent number: 8841656
    Abstract: According to one embodiment, an organic electroluminescent element includes: a first electrode having a first and a second major surfaces; a second electrode opposed to part of the first major surface; an organic luminescent layer provided between the first and the second electrodes; an optical layer having a third major surface opposed to the second major surface and a fourth major surface on opposite side from the third major surface. The fourth major surface includes a first region overlapping the second electrode, and a second region not overlapping the second electrode. The fourth major surface includes a first concave-convex provided in the first region and a second concave-convex provided in the second region. A planarization layer is provided on the second region and burying the second concave-convex.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: September 23, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoko Sugizaki, Shintaro Enomoto, Akio Amano, Tomio Ono, Yasushi Shinjo, Yukitami Mizuno, Keiji Sugi, Tomoaki Sawabe, Toshiya Yonehara, Daimotsu Kato
  • Patent number: 8810128
    Abstract: According to one embodiment, an organic electroluminescent device includes a transparent electrode, a metal electrode, an organic light emitting layer and an intermediate layer. The transparent electrode is transmissive with respect to visible light. The metal electrode is reflective with respect to the visible light. The organic light emitting layer is provided between the transparent electrode and the metal electrode and is configured to emit light including a wavelength component of the visible light. The intermediate layer contacts the metal electrode and the organic light emitting layer between the organic light emitting layer and the metal electrode and is transmissive with respect to the visible light. A thickness of the intermediate layer is 60 nanometers or more and less than 200 nanometers. A refractive index of the organic light emitting layer to the visible light is higher than a refractive index of the intermediate layer to the visible light.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: August 19, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiya Yonehara, Keiji Sugi, Daimotsu Kato, Tomoaki Sawabe, Tomio Ono, Shintaro Enomoto
  • Publication number: 20140159568
    Abstract: According to one embodiment, an organic electroluminescent device includes a transparent electrode, a metal electrode, an organic light emitting layer and an intermediate layer. The transparent electrode is transmissive with respect to visible light. The metal electrode is reflective with respect to the visible light. The organic light emitting layer is provided between the transparent electrode and the metal electrode and is configured to emit light including a wavelength component of the visible light. The intermediate layer contacts the metal electrode and the organic light emitting layer between the organic light emitting layer and the metal electrode and is transmissive with respect to the visible light. A thickness of the intermediate layer is 60 nanometers or more and less than 200 nanometers. A refractive index of the organic light emitting layer to the visible light is higher than a refractive index of the intermediate layer to the visible light.
    Type: Application
    Filed: February 13, 2014
    Publication date: June 12, 2014
    Inventors: Toshiya Yonehara, Keiji Sugi, Daimotsu Kato, Tomoaki Sawabe, Tomio Ono, Shintaro Enomoto
  • Publication number: 20140159029
    Abstract: According to one embodiment, an organic electroluminescent light emitting device includes a transparent substrate, an intermediate layer, a first electrode, an organic light emitting layer, and a second electrode. The intermediate layer includes a plurality of fine particles and a flattened layer. The fine particles are adhered to a major surface of the transparent substrate. The flattened layer covers the fine particles and has a refractive index different from a refractive index of the fine particles. The flattened layer is transparent. The first electrode is provided on the intermediate layer. The first electrode is transparent. The organic light emitting layer is provided on the first electrode. The second electrode is provided on the organic light emitting layer.
    Type: Application
    Filed: February 12, 2014
    Publication date: June 12, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoaki SAWABE, Tomio Ono, Keiji Sugi, Toshiya Yonehara, Shintaro Enomoto
  • Patent number: 8698390
    Abstract: According to one embodiment, an organic electroluminescent device includes a transparent electrode, a metal electrode, an organic light emitting layer and an intermediate layer. The transparent electrode is transmissive with respect to visible light. The metal electrode is reflective with respect to the visible light. The organic light emitting layer is provided between the transparent electrode and the metal electrode and is configured to emit light including a wavelength component of the visible light. The intermediate layer contacts the metal electrode and the organic light emitting layer between the organic light emitting layer and the metal electrode and is transmissive with respect to the visible light. A thickness of the intermediate layer is 60 nanometers or more and less than 200 nanometers. A refractive index of the organic light emitting layer to the visible light is higher than a refractive index of the intermediate layer to the visible light.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 15, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiya Yonehara, Keiji Sugi, Daimotsu Kato, Tomoaki Sawabe, Tomio Ono, Shintaro Enomoto
  • Publication number: 20140077204
    Abstract: According to one embodiment, a display device includes a first insulating layer, a second insulating layer, a pixel electrode, a light emitting layer, an opposite electrode and a pixel circuit. The second insulating layer is provided on the first insulating layer. The pixel electrode is provided on the second insulating layer and light-transmissive. The light emitting layer is provided on the pixel electrode. The opposite electrode is provided on the light emitting layer. The circuit is provided between the first insulating layer and the second insulating layer, includes an interconnect supplied with a drive current, and is configured to supply the drive current to the pixel electrode. The circuit is connected to the pixel electrode. The interconnect has a first region overlaying the pixel electrode when projected onto a plane parallel to the first insulating layer. The interconnect has an opening in the first region.
    Type: Application
    Filed: March 4, 2013
    Publication date: March 20, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Nobuyoshi SAITO, Tomomasa Ueda, Toshiya Yonehara, Hajime Yamaguchi, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano
  • Publication number: 20140077169
    Abstract: According to one embodiment, an organic electroluminescence device includes a first electrode, a second electrode, a first organic layer and a second organic layer. The second electrode includes a metal. The first organic layer is provided between the first electrode and the second electrode. The first organic layer is configured to emit light. The second organic layer is provided between the first organic layer and the second electrode. A refractive index of the second organic layer in a thickness direction for the light is lower than a refractive index of the first organic layer for the light.
    Type: Application
    Filed: December 28, 2012
    Publication date: March 20, 2014
    Inventors: Toshiya Yonehara, Tomio Ono, Tomoaki Sawabe, Keiji Sugi, Daimotsu Kato, Shintaro Enomoto
  • Publication number: 20130250214
    Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a second electrode, an organic light emitting layer and an optical layer. The first electrode has a first major surface and a second major surface opposite to the first major surface and is light transmissive. The second electrode faces a portion of the first major surface. The organic light emitting layer is provided between the first electrode and the second electrode. The organic light emitting layer and the first electrode are disposed between the optical layer and the second electrode. The optical layer is able to transit between a first state where a traveling direction of light emitted from the organic light emitting layer is changed and a second state having a smaller degree of the change in the traveling direction of the light than the first state.
    Type: Application
    Filed: December 20, 2012
    Publication date: September 26, 2013
    Inventors: KEIJI SUGI, SHINTARO ENOMOTO, TOMIO ONO, TOMOAKI SAWABE, YASUSHI SHINJO, YUKITAMI MIZUNO, AKIO AMANO, TOMOKO SUGIZAKI, TOSHIYA YONEHARA, DAIMOTSU KATO
  • Publication number: 20130250557
    Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a plurality of second electrodes and an organic light-emitting layer. The first electrode includes a first major surface and is optical transparency. The second electrodes extend in a first direction parallel to the first major surface and are separated from each other in a second direction parallel to the first major surface and perpendicular to the first direction. An optical transmittance of the second electrodes is lower than an optical transmittance of the first electrode. A distance along the second direction between a line extending in the first direction and a side surface of each of the second electrodes continuously increases and decreases along the first direction. The side surface is unparallel to the first major surface. The organic light-emitting layer is provided between the first electrode and the second electrodes.
    Type: Application
    Filed: December 19, 2012
    Publication date: September 26, 2013
    Inventors: Tomoko SUGIZAKI, Daimotsu Kato, Keiji Sugi, Tomio Ono, Yasushi Shinjo, Yukitami Mizuno, Akio Amano, Tomoaki Sawabe, Toshiya Yonehara, Shintaro Enomoto
  • Publication number: 20130248825
    Abstract: According to one embodiment, an organic electroluminescent element includes: a first electrode having a first and a second major surfaces; a second electrode opposed to part of the first major surface; an organic luminescent layer provided between the first and the second electrodes; an optical layer having a third major surface opposed to the second major surface and a fourth major surface on opposite side from the third major surface. The fourth major surface includes a first region overlapping the second electrode, and a second region not overlapping the second electrode. The fourth major surface includes a first concave-convex provided in the first region and a second concave-convex provided in the second region. A planarization layer is provided on the second region and burying the second concave-convex.
    Type: Application
    Filed: September 13, 2012
    Publication date: September 26, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tomoko SUGIZAKI, Shintaro ENOMOTO, Akio AMANO, Tomio ONO, Yasushi SHINJO, Yukitami MIZUNO, Keiji SUGI, Tomoaki SAWABE, Toshiya YONEHARA, Daimotsu KATO