Patents by Inventor Yasuhiro Nojiri

Yasuhiro Nojiri 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: 10347334
    Abstract: A semiconductor device according to an embodiment includes a memory cell array and a drive circuit section. The memory cell array includes memory cells. The drive circuit section adapted to control a driving voltage to be supplied to the memory cells. The memory cells each including a first variable resistance film and a second variable resistance film connected in series to the first variable resistance film. The driving voltage of the second variable resistance film is different from the driving voltage of the first variable resistance film.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 9, 2019
    Assignee: Toshiba Memory Corporation
    Inventor: Yasuhiro Nojiri
  • Publication number: 20180277207
    Abstract: A semiconductor device according to an embodiment includes a memory cell array and a drive circuit section. The memory cell array includes memory cells. The drive circuit section adapted to control a driving voltage to be supplied to the memory cells. The memory cells each including a first variable resistance film and a second variable resistance film connected in series to the first variable resistance film. The driving voltage of the second variable resistance film is different from the driving voltage of the first variable resistance film.
    Type: Application
    Filed: December 20, 2017
    Publication date: September 27, 2018
    Applicant: Toshiba Memory Corporation
    Inventor: Yasuhiro NOJIRI
  • Publication number: 20180233336
    Abstract: A processing apparatus according to an embodiment includes a container, a workpiece placement unit, a collimator, and a magnetic field generation unit. The workpiece placement unit on which a workpiece is to be placed so that particles are stacked on the workpiece is provided inside the container. The collimator is provided inside the container, and includes a first surface, a second surface opposite to the first surface, and a through hole penetrating the first surface and the second surface. The magnetic field generation unit is provided inside the container and generates a magnetic field between the first surface and the second surface inside the through hole.
    Type: Application
    Filed: December 19, 2016
    Publication date: August 16, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshinori TOKUDA, Yasuhiro NOJIRI, Shiguma KATO, Takahiro TERADA, Masakatsu TAKEUCHI, Yasuhiro AOYAMA
  • Patent number: 9679947
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: June 13, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaki Yamato, Yasuhiro Nojiri, Shigeki Kobayashi, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Publication number: 20170133586
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Application
    Filed: January 23, 2017
    Publication date: May 11, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masaki YAMATO, Yasuhiro NOJIRI, Shigeki KOBAYASHI, Hiroyuki FUKUMIZU, Takeshi YAMAGUCHI
  • Patent number: 9590016
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: March 7, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaki Yamato, Yasuhiro Nojiri, Shigeki Kobayashi, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Patent number: 9370920
    Abstract: According to one embodiment, an electrostatic chuck comprises a mount plate, a first layer, and a second layer. The first layer includes a heater. The second layer is provided between the mount plate and the first layer. The second layer transmits heat from the heater to the mount plate. The second layer includes a compressive attachment portion. The compressive attachment portion is formed at the outer edge. The face on the mount plate side of the compressive attachment portion is compressed and attached to the mount plate. The face on the first layer side of the compressive attachment portion is compressed and attached to the first layer.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 21, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Eto, Yasuhiro Nojiri, Makoto Saito
  • Publication number: 20160099289
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Application
    Filed: December 11, 2015
    Publication date: April 7, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masaki YAMATO, Yasuhiro Nojiri, Shigeki Kobayashi, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Patent number: 9248635
    Abstract: According to one embodiment, an electrostatic chuck comprises a mount plate, a first layer, and a second layer. The first layer includes a heater. The second layer is provided between the mount plate and the first layer. The second layer transmits heat from the heater to the mount plate. The second layer includes a compressive attachment portion. The compressive attachment portion is formed at the outer edge. The face on the mount plate side of the compressive attachment portion is compressed and attached to the mount plate. The face on the first layer side of the compressive attachment portion is compressed and attached to the first layer.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 2, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Eto, Yasuhiro Nojiri, Makoto Saito
  • Patent number: 9246088
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: January 26, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaki Yamato, Yasuhiro Nojiri, Shigeki Kobayashi, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Patent number: 9018613
    Abstract: A semiconductor memory device according to an embodiment comprises: a semiconductor substrate; and a memory cell block formed on the semiconductor substrate and configured having a plurality of memory cell arrays, each of the memory cell arrays including a plurality of column lines, a plurality of row lines, and a plurality of memory cells disposed at each of intersections of the plurality of column lines and the plurality of row lines, each of the memory cells including a variable resistance element having a transition metal oxide as a material, at least one of the plurality of column lines and the plurality of row lines being a polysilicon wiring line having polysilicon as a material, and the memory cell block including a block film between the variable resistance element of the memory cell and the polysilicon wiring line.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: April 28, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Nojiri, Hiroyuki Fukumizu, Shigeki Kobayashi, Masaki Yamato
  • Patent number: 9013912
    Abstract: A nonvolatile semiconductor memory device according to an embodiment comprises: a memory cell array including a plurality of memory layers; and a control unit configured to control a voltage applied to the memory cell array. Each of the memory layers comprises a first line and a second line, and further includes a memory cell disposed between the first line and the second line and including a variable resistance element. The control unit is configured to, when executing a forming operation on the memory cell array, execute the forming operation sequentially on the plurality of memory layers. The forming operation is executed sequentially on the memory layers in ascending order of a magnitude of a non-selected current flowing in a non-selected memory cell during the forming operation.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 21, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Nojiri, Shigeki Kobayashi, Masaki Yamato, Hiroyuki Fukumizu
  • Patent number: 9007809
    Abstract: A control circuit controls a voltage applied to a memory cell array. A first electrode contacts to a first surface of a variable resistance element, while a second electrode contacts to a second surface of the variable resistance element. The first electrode is configured by a metal, and the second electrode is configured by a P type semiconductor. The control unit, when performing a setting operation of a memory cell, applies a voltage such that a current flows in a direction from the first electrode toward the second electrode.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 14, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Fukumizu, Shigeki Kobayashi, Yasuhiro Nojiri, Masaki Yamato, Takeshi Yamaguchi
  • Patent number: 8971092
    Abstract: A memory cell array includes first wiring lines, and second wiring lines, the first and second wiring lines intersecting, and memory cells disposed in the intersections of the first and second wiring lines, the memory cells including a variable resistance element. A control circuit controls voltages of selected first and second wiring lines. The first wiring lines are arranged at a first pitch in a first direction perpendicular to a substrate and extend in a second direction parallel to the substrate. The second wiring lines are arranged at a second pitch in the second direction and extend in the first direction. The control circuit is configured to change voltages applied to a selected first wiring line according to the positions of the selected first wiring lines in the first direction.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: March 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Kobayashi, Yasuhiro Nojiri, Masaki Yamato, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Publication number: 20150043122
    Abstract: According to one embodiment, an electrostatic chuck comprises a mount plate, a first layer, and a second layer. The first layer includes a heater. The second layer is provided between the mount plate and the first layer. The second layer transmits heat from the heater to the mount plate. The second layer includes a compressive attachment portion. The compressive attachment portion is formed at the outer edge. The face on the mount plate side of the compressive attachment portion is compressed and attached to the mount plate. The face on the first layer side of the compressive attachment portion is compressed and attached to the first layer.
    Type: Application
    Filed: March 6, 2014
    Publication date: February 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideo ETO, Yasuhiro Nojiri, Makoto Saito
  • Patent number: 8916846
    Abstract: According to one embodiment, a nonvolatile memory device includes a first wiring, a second wiring, and a memory cell provided between the first wiring and the second wiring. The memory cell includes a memory layer, a rectifying element layer, and a protective resistance layer including a first semiconductor layer of a first conductivity type and a second semiconductor layer of a second conductivity type.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: December 23, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Kobayashi, Takeshi Yamaguchi, Yasuhiro Nojiri, Masaki Yamato, Hiroyuki Fukumizu
  • Patent number: 8912521
    Abstract: First conductive layers extend in a first direction horizontal to a substrate as a longitudinal direction, and are stacked in a direction perpendicular to a substrate. An interlayer insulating layer is provided between the first conductive layers. The variable resistance layers functioning as a variable resistance element are formed continuously on the side surfaces of the first conductive layers and the interlayer insulating layer. A columnar conductive layer is provided on the side surfaces of the first conductive layers and the interlayer insulating layer via the variable resistance layers. First side surfaces of the first conductive layers are recessed from a second side surface of the interlayer insulating layer in the direction away from the columnar conductive layers.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 16, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Nojiri, Hiroyuki Fukumizu, Shigeki Kobayashi, Masaki Yamato
  • Patent number: 8866117
    Abstract: A diode layer includes a first impurity semiconductor layer that includes a first impurity acting as an acceptor and a second impurity semiconductor layer that includes a second impurity acting as a donor. One end of a first electrode layer contacts the diode layer. One end of a polysilicon layer contacts the other end of the first electrode layer. One end of a variable resistance layer contacts the other end of the polysilicon layer and is able to change a resistance value. A second electrode layer contacts the other end of the variable resistance layer. At least one of a first area and a second area contains a third impurity. The first area includes one end of the polysilicon layer, the second area includes the other end of the polysilicon layer. The third impurity differs from the first impurity and the second impurity.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 21, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuyuki Sekine, Yasuhiro Nojiri, Hiroyuki Fukumizu
  • Publication number: 20140241037
    Abstract: A memory cell array includes first wiring lines, and second wiring lines, the first and second wiring lines intersecting, and memory cells disposed in the intersections of the first and second wiring lines, the memory cells including a variable resistance element. A control circuit controls voltages of selected first and second wiring lines. The first wiring lines are arranged at a first pitch in a first direction perpendicular to a substrate and extend in a second direction parallel to the substrate. The second wiring lines are arranged at a second pitch in the second direction and extend in the first direction. The control circuit is configured to change voltages applied to a selected first wiring line according to the positions of the selected first wiring lines in the first direction.
    Type: Application
    Filed: September 9, 2013
    Publication date: August 28, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeki KOBAYASHI, Yasuhiro Nojiri, Masaki Yamato, Hiroyuki Fukumizu, Takeshi Yamaguchi
  • Publication number: 20140209853
    Abstract: A plurality of first conductive layers are stacked at a predetermined pitch in a first direction perpendicular to a substrate. A memory layer is provided in common on side surfaces of the first conductive layers and functions as the memory cells. A second conductive layer comprises a first side surface in contact with side surfaces of the first conductive layers via the memory layer, the second conductive layer extending in the first direction. A width in a second direction of the first side surface at a first position is smaller than a width in the second direction of the first side surface at a second position lower than the first position. A thickness in the first direction of the first conductive layer at the first position is larger than a thickness in the first direction of the first conductive layer at the second position.
    Type: Application
    Filed: September 13, 2013
    Publication date: July 31, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masaki YAMATO, Yasuhiro Nojiri, Shiegeki Kobayashi, Hiroyuki Fukumizu, Takeshi Yamaguchi