Patents by Inventor Hisato Oyamatsu

Hisato Oyamatsu 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: 20170249210
    Abstract: According to an embodiment, a memory device includes a plurality of decoders each configured to (i) correct an error and output a corrected read data item if a read data item from a memory circuit corresponding to the decoder contains one error, and (ii) output the read data item if no error is detected in the read data item; and a majority circuit configured to output a read data item which is the same as one of the read data items of the most read data items output from the plurality of decoders.
    Type: Application
    Filed: September 14, 2016
    Publication date: August 31, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Hisato OYAMATSU
  • Publication number: 20150228695
    Abstract: According to one embodiment, a magnetic memory device includes a semiconductor substrate, a memory cell array area on the semiconductor substrate, the memory cell array area including magnetoresistive elements, each of the magnetoresistive elements having a reference layer with an invariable magnetization, a storage layer with a variable magnetization, and a tunnel barrier layer therebetween, a magnetic field generating area which generates a first magnetic field cancelling a second magnetic field applying from the reference layer to the storage layer, and which is separated from the magnetoresistive elements, and a closed magnetic path area functioning as a closed magnetic path of the first magnetic field, and surrounding the memory cell array area and the magnetic field generating area.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinya KOBAYASHI, Kenji NOMA, Hisato OYAMATSU
  • Patent number: 9041130
    Abstract: According to one embodiment, a magnetic memory device includes a semiconductor substrate, a memory cell array area on the semiconductor substrate, the memory cell array area including magnetoresistive elements, each of the magnetoresistive elements having a reference layer with an invariable magnetization, a storage layer with a variable magnetization, and a tunnel barrier layer therebetween, a magnetic field generating area which generates a first magnetic field cancelling a second magnetic field applying from the reference layer to the storage layer, and which is separated from the magnetoresistive elements, and a closed magnetic path area functioning as a closed magnetic path of the first magnetic field, and surrounding the memory cell array area and the magnetic field generating area.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: May 26, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinya Kobayashi, Kenji Noma, Hisato Oyamatsu
  • Publication number: 20150069546
    Abstract: According to one embodiment, a magnetic memory device includes a semiconductor substrate, a memory cell array area on the semiconductor substrate, the memory cell array area including magnetoresistive elements, each of the magnetoresistive elements having a reference layer with an invariable magnetization, a storage layer with a variable magnetization, and a tunnel barrier layer therebetween, a magnetic field generating area which generates a first magnetic field cancelling a second magnetic field applying from the reference layer to the storage layer, and which is separated from the magnetoresistive elements, and a closed magnetic path area functioning as a closed magnetic path of the first magnetic field, and surrounding the memory cell array area and the magnetic field generating area.
    Type: Application
    Filed: February 11, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinya KOBAYASHI, Kenji NOMA, Hisato OYAMATSU
  • Patent number: 8735181
    Abstract: A measuring device measures a gate length of a plurality of gate electrodes formed on a wafer. A calculation device calculates data of an ion implantation dosage for making uniform a threshold voltage in a wafer surface on the basis of distribution of the gate length in a wafer surface measured by the measuring device. The ion implantation device implants ions into the wafer on the basis of the data of the ion implantation dosage calculated by the calculation device.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: May 27, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Osamu Fujii, Yoshimasa Kawase, Hisato Oyamatsu, Takeshi Shibata
  • Patent number: 7741159
    Abstract: A semiconductor device includes a semiconductor substrate, a first diffusion region formed in the semiconductor substrate, a semiconductor element formed in the first diffusion region, and a channel formed in the first diffusion region to receive a cooling fluid.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: June 22, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hisato Oyamatsu
  • Publication number: 20090269904
    Abstract: A semiconductor device includes a semiconductor substrate, a first diffusion region formed in the semiconductor substrate, a semiconductor element formed in the first diffusion region, and a channel formed in the first diffusion region to receive a cooling fluid.
    Type: Application
    Filed: July 8, 2009
    Publication date: October 29, 2009
    Inventor: Hisato OYAMATSU
  • Patent number: 7569931
    Abstract: A semiconductor device includes a semiconductor substrate, a first diffusion region formed in the semiconductor substrate, a semiconductor element formed in the first diffusion region, and a channel formed in the first diffusion region to receive a cooling fluid.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: August 4, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hisato Oyamatsu
  • Publication number: 20090114853
    Abstract: A measuring device measures a gate length of a plurality of gate electrodes formed on a wafer. A calculation device calculates data of an ion implantation dosage for making uniform a threshold voltage in a wafer surface on the basis of distribution of the gate length in a wafer surface measured by the measuring device. The ion implantation device implants ions into the wafer on the basis of the data of the ion implantation dosage calculated by the calculation device.
    Type: Application
    Filed: October 15, 2008
    Publication date: May 7, 2009
    Inventors: Osamu FUJII, Yoshimasa KAWASE, Hisato OYAMATSU, Takeshi SHIBATA
  • Patent number: 7521300
    Abstract: A method of manufacturing a semiconductor device substrate includes forming a mask layer pattern on a semiconductor layer insulated from a surface of a semiconductor substrate by an electrically insulating layer, etching the semiconductor layer according to the pattern of the mask layer to form a trench leading to the insulating layer, etching a protective layer on the semiconductor substrate having a thickness less than the thickness of the insulating layer to form a sidewall protective film which covers a side surface of the trench, etching the insulating layer from a bottom surface of the trench to the semiconductor substrate; and growing a single-crystalline layer from the surface of the semiconductor substrate exposed as a result of etching the insulating layer.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: April 21, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Nagano, Takashi Yamada, Tsutomu Sato, Ichiro Mizushima, Hisato Oyamatsu
  • Patent number: 7439112
    Abstract: A semiconductor device manufacturing method includes selectively removing portions of a buried oxide layer and first semiconductor layer in an SOI substrate having the first semiconductor layer formed above a semiconductor substrate with the buried oxide layer disposed therebetween and exposing part of the semiconductor substrate, removing an exposed region of the semiconductor substrate in a depth direction, and burying a second semiconductor region in the region from which part of the semiconductor substrate has been removed in the depth direction.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: October 21, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Nagano, Shinichi Nitta, Hisato Oyamatsu
  • Publication number: 20070267680
    Abstract: A semiconductor integrated circuit device contains a CMOS circuit that includes a plurality of N-channel transistors and a plurality of P-channel transistors. The plurality of N-channel transistors is provided with device isolation by one of a gate isolation structure and a shallow trench isolation structure. The plurality of P-channel transistors are provided with device isolation by the other of the gate isolation structure and the shallow trench isolation structure.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukinori Uchino, Muneaki Maeno, Yoichi Takegawa, Hisato Oyamatsu
  • Publication number: 20070117306
    Abstract: A semiconductor device includes a semiconductor substrate, a first diffusion region formed in the semiconductor substrate, a semiconductor element formed in the first diffusion region, and a channel formed in the first diffusion region to receive a cooling fluid.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 24, 2007
    Inventor: Hisato Oyamatsu
  • Patent number: 7187035
    Abstract: A method of manufacturing a semiconductor device substrate is disclosed, which comprises forming a mask layer patterned on a semiconductor layer insulated from a surface of a semiconductor substrate by an electrically insulating layer, etching the semiconductor layer according to the pattern of the mask layer to form a trench leading to the insulating layer, etching a protective layer deposited thinner on the semiconductor substrate than the thickness of the insulating layer to form a sidewall protective film which covers a side surface of the trench, etching the insulating layer from a bottom surface of the trench to the semiconductor substrate; and growing a single-crystalline layer from the surface of the semiconductor substrate exposed as a result of etching the insulating layer.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: March 6, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Nagano, Takashi Yamada, Tsutomu Sato, Ichiro Mizushima, Hisato Oyamatsu
  • Patent number: 7176536
    Abstract: A semiconductor device includes a semiconductor substrate, an element-isolating region formed in the semiconductor substrate, a real element region formed in the semiconductor substrate and outside the element-isolating region and having a metal silicide layer formed on the surface thereof, and a dummy element region formed in the semiconductor substrate and outside the element-isolating region and having a metal silicide layer formed on the surface thereof. The ratio of the sum of pattern areas of the real element region and dummy element region occupied in a 1 ?m-square range of interest including the element region is 25% or more.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: February 13, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hisato Oyamatsu, Kenji Honda
  • Patent number: 7148543
    Abstract: A semiconductor chip includes a base substrate, a bulk device region having a bulk growth layer on a part of the base substrate, an SOI device region having a buried insulator on the base substrate and a silicon layer on the buried insulator, and a boundary layer located at the boundary between the bulk device region and the SOI device region. The bulk device region has a first device-fabrication surface in which a bulk device is positioned on the bulk growth layer. The SOI device region has a second device-fabrication surface in which an SOI device is positioned on the silicon layer. The first and second device-fabrication surfaces are positioned at a substantially uniform level.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: December 12, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Yamada, Hajime Nagano, Ichiro Mizushima, Tsutomu Sato, Hisato Oyamatsu, Shinichi Nitta
  • Publication number: 20060273330
    Abstract: A semiconductor device manufacturing method includes selectively removing portions of a buried oxide layer and first semiconductor layer in an SOI substrate having the first semiconductor layer formed above a semiconductor substrate with the buried oxide layer disposed therebetween and exposing part of the semiconductor substrate, removing an exposed region of the semiconductor substrate in a depth direction, and burying a second semiconductor region in the region from which part of the semiconductor substrate has been removed in the depth direction.
    Type: Application
    Filed: August 4, 2006
    Publication date: December 7, 2006
    Inventors: Hajime Nagano, Shinichi Nitta, Hisato Oyamatsu
  • Publication number: 20060234478
    Abstract: A method of manufacturing a semiconductor device substrate includes forming a mask layer pattern on a semiconductor layer insulated from a surface of a semiconductor substrate by an electrically insulating layer, etching the semiconductor layer according to the pattern of the mask layer to form a trench leading to the insulating layer, etching a protective layer on the semiconductor substrate having a thickness less than the thickness of the insulating layer to form a sidewall protective film which covers a side surface of the trench, etching the insulating layer from a bottom surface of the trench to the semiconductor substrate; and growing a single-crystalline layer from the surface of the semiconductor substrate exposed as a result of etching the insulating layer.
    Type: Application
    Filed: June 20, 2006
    Publication date: October 19, 2006
    Inventors: Hajime Nagano, Takashi Yamada, Tsutomu Sato, Ichiro Mizushima, Hisato Oyamatsu
  • Patent number: 7112822
    Abstract: A semiconductor device includes a first semiconductor layer formed above a first region of a supporting substrate with a buried oxide layer disposed therebetween and a second semiconductor layer formed on a second region of the supporting substrate. An interface between the supporting substrate and the second semiconductor layer is placed in substantially the same depth position as the undersurface of the buried oxide layer or in a position deeper than the buried oxide layer.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: September 26, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Nagano, Shinichi Nitta, Hisato Oyamatsu
  • Patent number: RE42180
    Abstract: A semiconductor device includes a semiconductor substrate, an element-isolating region formed in the semiconductor substrate, a real element region formed in the semiconductor substrate and outside the element-isolating region and having a metal silicide layer formed on the surface thereof, and a dummy element region formed in the semiconductor substrate and outside the element-isolating region and having a metal silicide layer formed on the surface thereof. The ratio of the sum of pattern areas of the real element region and dummy element region occupied in a 1 ?m-square range of interest including the element region is 25% or more.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: March 1, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hisato Oyamatsu, Kenji Honda