Patents by Inventor Yasuharu Sugawara

Yasuharu Sugawara 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: 11935729
    Abstract: The disclosed substrate support includes a first region, a second region, a first electrode, and a second electrode. The first region is configured to hold a substrate placed thereon. The second region is provided to surround the first region and configured to hold an edge ring placed thereon. The first electrode is provided in the first region to receive a first electrical bias. The second electrode is provided in at least the second region to receive a second electrical bias. The second electrode extends below the first electrode to face the first electrode within the first region.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: March 19, 2024
    Assignee: Tokyo Electron Limited
    Inventors: Hajime Tamura, Yasuharu Sasaki, Shin Yamaguchi, Tsuguto Sugawara, Katsuyuki Koizumi
  • Publication number: 20160133793
    Abstract: According to one embodiment, a semiconductor light emitting element includes a conductive substrate, a bonding portion, an intermediate metal film, a first electrode, a semiconductor stacked body and a second electrode. The bonding portion is provided on the support substrate and including a first metal film. The intermediate metal film is provided on the bonding portion and having a larger linear expansion coefficient than the first metal film. The first electrode is provided on the intermediate metal film and includes a second metal film having a larger linear expansion coefficient than the intermediate metal film. The semiconductor stacked body is provided on the first electrode and including a light emitting portion. The second electrode is provided on the semiconductor stacked body.
    Type: Application
    Filed: December 28, 2015
    Publication date: May 12, 2016
    Inventors: Yasuharu SUGAWARA, Yuko KATO, Eiji MURAMOTO
  • Patent number: 9252335
    Abstract: According to one embodiment, a semiconductor light emitting element includes a conductive substrate, a bonding portion, an intermediate metal film, a first electrode, a semiconductor stacked body and a second electrode. The bonding portion is provided on the support substrate and including a first metal film. The intermediate metal film is provided on the bonding portion and having a larger linear expansion coefficient than the first metal film. The first electrode is provided on the intermediate metal film and includes a second metal film having a larger linear expansion coefficient than the intermediate metal film. The semiconductor stacked body is provided on the first electrode and including a light emitting portion. The second electrode is provided on the semiconductor stacked body.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: February 2, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuharu Sugawara, Yuko Kato, Eiji Muramoto
  • Publication number: 20150280084
    Abstract: According to an embodiment, a semiconductor light emitting device includes a semiconductor layer, a first and a second interconnect parts and a first and a second insulating films. The semiconductor layer has a first side and a second side opposite to the first side, and includes a first conductivity type layer, a second conductivity type layer and a light emitting layer. The first interconnect part is electrically connected to the first conductivity type layer. The second interconnect part is electrically connected to the second conductivity type layer. The first insulating film is provided between the semiconductor layer and the first interconnect part, and between the semiconductor layer and the second interconnect part. The second insulating film is in contact with the semiconductor layer on the first side, and has a density different from that of the first insulating film.
    Type: Application
    Filed: September 10, 2014
    Publication date: October 1, 2015
    Inventor: Yasuharu Sugawara
  • Publication number: 20140203296
    Abstract: According to an embodiment, a semiconductor light emitting device includes a light emitting body including a semiconductor light emitting layer, a support substrate supporting the light emitting body, and a bonding layer provided between the light emitting body and the support substrate, the bonding layer bonding the light emitting body and the support substrate together. The device also includes a first barrier metal layer provided between the light emitting body and the bonding layer, and an electrode provided between the light emitting body and the first barrier metal layer. The first barrier layer includes a first layer made of nickel and a second layer made of a metal having a smaller linear expansion coefficient than nickel, and the first layer and the second layer are alternately disposed in a multiple-layer structure. The electrode is electrically connected to the light emitting body.
    Type: Application
    Filed: March 25, 2014
    Publication date: July 24, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yasuharu SUGAWARA
  • Patent number: 8723336
    Abstract: According to an embodiment, a semiconductor light emitting device includes a light emitting body including a semiconductor light emitting layer, a support substrate supporting the light emitting body, and a bonding layer provided between the light emitting body and the support substrate, the bonding layer bonding the light emitting body and the support substrate together. The device also includes a first barrier metal layer provided between the light emitting body and the bonding layer, and an electrode provided between the light emitting body and the first barrier metal layer. The first barrier layer includes a first layer made of nickel and a second layer made of a metal having a smaller linear expansion coefficient than nickel, and the first layer and the second layer are alternately disposed in a multiple-layer structure. The electrode is electrically connected to the light emitting body.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: May 13, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasuharu Sugawara
  • Publication number: 20130153920
    Abstract: According to an embodiment, a semiconductor light emitting device includes a light emitting body including a semiconductor light emitting layer, a support substrate supporting the light emitting body, and a bonding layer provided between the light emitting body and the support substrate, the bonding layer bonding the light emitting body and the support substrate together. The device also includes a first barrier metal layer provided between the light emitting body and the bonding layer, and an electrode provided between the light emitting body and the first barrier metal layer. The first barrier layer includes a first layer made of nickel and a second layer made of a metal having a smaller linear expansion coefficient than nickel, and the first layer and the second layer are alternately disposed in a multiple-layer structure. The electrode is electrically connected to the light emitting body.
    Type: Application
    Filed: May 15, 2012
    Publication date: June 20, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yasuharu SUGAWARA
  • Patent number: 8426878
    Abstract: A semiconductor light emitting device includes: a support substrate; a metal layer provided on the support substrate; a semiconductor layer provided on the metal layer and including a light emitting layer; a contact layer containing a semiconductor, selectively provided between the semiconductor layer and the metal layer, and being in contact with the semiconductor layer and the metal layer; and an insulating film provided between the semiconductor layer and the metal layer at a position not overlapping the contact layer.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: April 23, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi Yasuda, Yuko Kato, Yasuharu Sugawara, Toshiyuki Terada, Kazuyoshi Furukawa
  • Publication number: 20130015480
    Abstract: According to one embodiment, in a semiconductor light emitting device, a substrate has a first surface and a second surface to face to each other, and side surfaces each having a first region extending approximately vertically from the first surface toward the second surface side and a second region sloping broadly from the first region toward the second surface side. A semiconductor laminated body is provided on the first surface of the substrate and includes a first semiconductor layer of a first conductivity type, an active layer and a second semiconductor layer of a second conductivity type which are laminated in the order. A reflection film is provided on the second surface of the substrate.
    Type: Application
    Filed: February 24, 2012
    Publication date: January 17, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasuharu SUGAWARA, Yuko Kato
  • Publication number: 20120261707
    Abstract: A semiconductor light emitting device includes: a support substrate; a metal layer provided on the support substrate; a semiconductor layer provided on the metal layer and including a light emitting layer; a contact layer containing a semiconductor, selectively provided between the semiconductor layer and the metal layer, and being in contact with the semiconductor layer and the metal layer; and an insulating film provided between the semiconductor layer and the metal layer at a position not overlapping the contact layer.
    Type: Application
    Filed: June 25, 2012
    Publication date: October 18, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi Yasuda, Yuko Kato, Yasuharu Sugawara, Toshiyuki Terada, Kazuyoshi Furukawa
  • Patent number: 8237183
    Abstract: A semiconductor light emitting device includes: a support substrate; a metal layer provided on the support substrate; a semiconductor layer provided on the metal layer and including a light emitting layer; a contact layer containing a semiconductor, selectively provided between the semiconductor layer and the metal layer, and being in contact with the semiconductor layer and the metal layer; and an insulating film provided between the semiconductor layer and the metal layer at a position not overlapping the contact layer.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: August 7, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidefumi Yasuda, Yuko Kato, Yasuharu Sugawara, Toshiyuki Terada, Kazuyoshi Furukawa
  • Publication number: 20120100695
    Abstract: A manufacturing method of a semiconductor device according to one embodiment includes attaching a front-side protecting member to a first main surface of a semiconductor wafer having an element region formed therein; laser-dicing the semiconductor wafer by applying a laser beam from a second main surface opposite to the first main surface of the semiconductor wafer; forming a backside metal film on the second main surface of the semiconductor wafer; and pressing a spherical surface against the front-side protecting member to expand the front-side protecting member and form individually divided semiconductor chips having the backside metal film attached thereto.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 26, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: YASUHARU SUGAWARA, HIDEFUMI YASUDA, SHUJI ITONAGA
  • Publication number: 20110215364
    Abstract: According to one embodiment, a semiconductor light emitting element includes a conductive substrate, a bonding portion, an intermediate metal film, a first electrode, a semiconductor stacked body and a second electrode. The bonding portion is provided on the support substrate and including a first metal film. The intermediate metal film is provided on the bonding portion and having a larger linear expansion coefficient than the first metal film. The first electrode is provided on the intermediate metal film and includes a second metal film having a larger linear expansion coefficient than the intermediate metal film. The semiconductor stacked body is provided on the first electrode and including a light emitting portion. The second electrode is provided on the semiconductor stacked body.
    Type: Application
    Filed: September 9, 2010
    Publication date: September 8, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasuharu Sugawara, Yuko Kato, Eiji Muramoto
  • Publication number: 20110133216
    Abstract: According to one embodiment, a method is disclosed for manufacturing a semiconductor light emitting device. The method can include forming a plurality of semiconductor stacked bodies on a first major surface of a support substrate with a gap between two neighboring semiconductor stacked bodies. The semiconductor stacked bodies includes a first semiconductor layer, a second semiconductor layer, and a light emitting layer provided between the first semiconductor layer and the second semiconductor layer. The method can bond the plurality of semiconductor stacked bodies to one other support substrate with a bonding member. In addition, the method can remove the support substrate from the plurality of semiconductor stacked bodies by irradiating the plurality of semiconductor stacked bodies with a laser light from a second major surface of the support substrate on a side opposite to the first major substrate. The bonding member is not irradiated with the laser light.
    Type: Application
    Filed: September 3, 2010
    Publication date: June 9, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yasuharu SUGAWARA
  • Publication number: 20100207249
    Abstract: A wafer with an orientation notch being cut in a portion of its circumference, the wafer includes: a reinforcing flange formed upright at periphery; and a thin section surrounded by the reinforcing flange and having a smaller thickness than the reinforcing flange. The reinforcing flange includes a circumferential portion formed upright along the circumference and a notch portion formed upright near the orientation notch, and a width of the circumferential portion as viewed parallel to a major surface of the wafer is smaller than a depth of the orientation notch as viewed parallel to the major surface.
    Type: Application
    Filed: April 29, 2010
    Publication date: August 19, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuharu SUGAWARA, Motoshige KOBAYASHI
  • Patent number: 7737531
    Abstract: A wafer with an orientation notch being cut in a portion of its circumference, the wafer includes: a reinforcing flange formed upright at periphery; and a thin section surrounded by the reinforcing flange and having a smaller thickness than the reinforcing flange. The reinforcing flange includes a circumferential portion formed upright along the circumference and a notch portion formed upright near the orientation notch, and a width of the circumferential portion as viewed parallel to a major surface of the wafer is smaller than a depth of the orientation notch as viewed parallel to the major surface.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: June 15, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuharu Sugawara, Motoshige Kobayashi
  • Patent number: 7667224
    Abstract: A semiconductor light emitting device comprises: a substrate; a semiconductor stacked structure; a first electrode; a second electrode; and a reflective film. The substrate has a top face and a rear face electrode forming portion opposed thereto, and is translucent to light in a first wavelength band. The rear face electrode forming portion is surrounded by a rough surface. The semiconductor stacked structure is provided on the top face of the substrate and includes an active layer that emits light in the first wavelength band. The first electrode is provided on the semiconductor stacked structure, and the second electrode is provided on the rear face electrode forming portion. The reflective film is coated on at least a portion of the rough surface.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: February 23, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Ohashi, Yasuharu Sugawara, Shuji Itonaga, Yasuhiko Akaike
  • Publication number: 20090102020
    Abstract: A wafer with an orientation notch being cut in a portion of its circumference, the wafer includes: a reinforcing flange formed upright at periphery; and a thin section surrounded by the reinforcing flange and having a smaller thickness than the reinforcing flange. The reinforcing flange includes a circumferential portion formed upright along the circumference and a notch portion formed upright near the orientation notch, and a width of the circumferential portion as viewed parallel to a major surface of the wafer is smaller than a depth of the orientation notch as viewed parallel to the major surface.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 23, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuharu SUGAWARA, Motoshige Kobayashi
  • Publication number: 20090045425
    Abstract: A semiconductor light emitting device includes: a support substrate; a metal layer provided on the support substrate; a semiconductor layer provided on the metal layer and including a light emitting layer; a contact layer containing a semiconductor, selectively provided between the semiconductor layer and the metal layer, and being in contact with the semiconductor layer and the metal layer; and an insulating film provided between the semiconductor layer and the metal layer at a position not overlapping the contact layer.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 19, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hidefumi YASUDA, Yuko Kato, Yasuharu Sugawara, Toshiyuki Terada, Kazuyoshi Furukawa
  • Patent number: 7488989
    Abstract: A light emitting element comprises a GaP substrate and a mesa portion. The GaP substrate includes a major surface inclined to the <011> direction from the {100} plane and a side surface covered with inequalities substantially. The mesa portion has a light emitting multi-layer of InGaAlP based material provided on the major surface. A part of a light emitted from the light emitting multi-layer is extracted through the side surface of the GaP substrate.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: February 10, 2009
    Assignee: KabushikI Kaisha Toshiba
    Inventors: Koichi Nitta, Takafumi Nakamura, Akihiro Fujiwara, Kuniaki Konno, Yasuharu Sugawara