Patents by Inventor Takahisa Kanemura

Takahisa Kanemura 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: 20180130810
    Abstract: A semiconductor memory device according to an embodiment includes a first stacked body, a second stacked body, an intermediate conductive layer, an intermediate insulating layer, a semiconductor pillar, a charge storage film, and an insulating film. The semiconductor pillar includes a first part, a second part, and a third part. The charge storage film includes a first charge storage portion and a second charge storage portion. The charge storage film includes at least one first element selected from the group consisting of nitrogen, hafnium, and aluminum. The insulating film provides in at least a portion between the intermediate conductive layer and the first part. The insulating film not includes the first element, or the insulating film has a concentration of the first element lower than a concentration of the first element of the charge storage film.
    Type: Application
    Filed: January 5, 2018
    Publication date: May 10, 2018
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Hiroki TOKUHIRA, Takahisa KANEMURA, Shigeo KONDO, Michiru HOGYOKU
  • Patent number: 9865656
    Abstract: A semiconductor memory device according to an embodiment includes a memory cell array that includes a plurality of memory cells.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: January 9, 2018
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Takahisa Kanemura, Takashi Izumida
  • Publication number: 20170263614
    Abstract: A semiconductor memory device according to an embodiment, includes a first stacked body, a second stacked body, an intermediate conductive layer, an intermediate insulating layer, a semiconductor pillar, a charge storage film, and an insulating film. The semiconductor pillar includes a first part, a second part, and a third part. The charge storage film includes a first charge storage portion and a second charge storage portion. The charge storage film includes at least one first element selected from the group consisting of nitrogen, hafnium, and aluminum. The insulating film provides in at least a portion between the intermediate conductive layer and the first part. The insulating film not includes the first element, or the insulating film has a concentration of the first element lower than a concentration of the first element of the charge storage film.
    Type: Application
    Filed: September 14, 2016
    Publication date: September 14, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: HIROKI TOKUHIRA, TAKAHISA KANEMURA, SHIGEO KONDO, MICHIRU HOGYOKU
  • Publication number: 20170236872
    Abstract: A semiconductor memory device according to an embodiment includes a memory cell array that includes a plurality of memory cells.
    Type: Application
    Filed: September 21, 2016
    Publication date: August 17, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takahisa KANEMURA, Takashi Izumida
  • Publication number: 20160284746
    Abstract: According to one embodiment, a solid-state imaging device includes a plurality of photoelectric conversion elements, a field effect transistor, a trench, and a P-type impurity diffusion region. The plurality of photoelectric conversion elements is two-dimensionally arranged in a semiconductor layer. The field effect transistor includes N-type source and drain on a surface side of the semiconductor layer. The trench penetrates through a surface and a rear surface of the semiconductor layer and surrounds each of the photoelectric conversion elements. The width of the trench is enlarged from the surface of the semiconductor layer toward a position at a predetermined depth, and is not enlarged at a position deeper than the position at the predetermined depth. The P-type impurity diffusion region is arranged in a side surface of the trench.
    Type: Application
    Filed: June 19, 2015
    Publication date: September 29, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuya FUKASE, Tatsuya OHGURO, Hisayo MOMOSE, Tetsu MOROOKA, Takahisa KANEMURA
  • Patent number: 9379164
    Abstract: An integrated circuit device according to an embodiment includes a semiconductor substrate, a first semiconductor member and a second semiconductor member provided on the semiconductor substrate, a first electrode disposed between the first semiconductor member and the second semiconductor member, and a second electrode disposed between the semiconductor substrate and the first electrode. The first semiconductor member and the second semiconductor member extend in a first direction perpendicular to an upper surface of the semiconductor substrate. The first semiconductor member and the second semiconductor member are separated in a second direction orthogonal to the first direction. The first electrode extends in a third direction intersecting both the first direction and the second direction. The second electrode extends in the third direction.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: June 28, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsukasa Nakai, Masaki Kondo, Hikari Tajima, Hiroki Tokuhira, Takashi Izumida, Takashi Kurusu, Nobutoshi Aoki, Takahisa Kanemura, Tadayoshi Uechi
  • Publication number: 20150263117
    Abstract: A semiconductor device according to an embodiment comprises: a gate insulating film formed on a semiconductor substrate; a semiconductor layer formed on the gate insulating film; and a first metal layer formed to be electrically connected to the semiconductor layer. 1×1019 atoms/cm3 or more of a Group VI element exists in an interface of the semiconductor layer and the first metal layer.
    Type: Application
    Filed: September 12, 2014
    Publication date: September 17, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koichi KATO, Takao MARUKAME, Yoshifumi NISHI, Yuichiro MITANI, Takahisa KANEMURA, Kazuya OHUCHI
  • Publication number: 20150255514
    Abstract: An integrated circuit device according to an embodiment includes a semiconductor substrate, a first semiconductor member and a second semiconductor member provided on the semiconductor substrate, a first electrode disposed between the first semiconductor member and the second semiconductor member, and a second electrode disposed between the semiconductor substrate and the first electrode. The first semiconductor member and the second semiconductor member extend in a first direction perpendicular to an upper surface of the semiconductor substrate. The first semiconductor member and the second semiconductor member are separated in a second direction orthogonal to the first direction. The first electrode extends in a third direction intersecting both the first direction and the second direction. The second electrode extends in the third direction.
    Type: Application
    Filed: February 25, 2015
    Publication date: September 10, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsukasa NAKAI, Masaki KONDO, Hikari TAJIMA, Hiroki TOKUHIRA, Takashi IZUMIDA, Takashi KURUSU, Nobutoshi AOKI, Takahisa KANEMURA, Tadayoshi UECHI
  • Patent number: 8796669
    Abstract: In one embodiment, a semiconductor device includes a substrate, and a source region of a first conductivity type disposed on a surface of the substrate. The device further includes a tunnel insulator disposed on the source region, and an impurity semiconductor layer of a second conductivity type disposed on the tunnel insulator, the second conductivity type being different from the first conductivity type. The device further includes a gate insulator disposed on the impurity semiconductor layer, and a gate electrode disposed on the gate insulator. The device further includes a drain region of the second conductivity type disposed on the substrate so as to be separated from the impurity semiconductor layer, or disposed on the substrate as a portion of the impurity semiconductor layer.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: August 5, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Takahisa Kanemura
  • Publication number: 20140061777
    Abstract: In one embodiment, a semiconductor device includes a substrate, and a source region of a first conductivity type disposed on a surface of the substrate. The device further includes a tunnel insulator disposed on the source region, and an impurity semiconductor layer of a second conductivity type disposed on the tunnel insulator, the second conductivity type being different from the first conductivity type. The device further includes a gate insulator disposed on the impurity semiconductor layer, and a gate electrode disposed on the gate insulator. The device further includes a drain region of the second conductivity type disposed on the substrate so as to be separated from the impurity semiconductor layer, or disposed on the substrate as a portion of the impurity semiconductor layer.
    Type: Application
    Filed: February 6, 2013
    Publication date: March 6, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Takahisa KANEMURA
  • Patent number: 8575624
    Abstract: In one embodiment, a semiconductor device includes a semiconductor substrate, a gate electrode provided on the semiconductor substrate via an insulating layer, and a gate insulator provided on a side surface of the gate electrode. The device includes a stacked layer including a lower main terminal layer of a first conductivity type, an intermediate layer, and an upper main terminal layer of a second conductivity type which are successively stacked on the semiconductor substrate, the stacked layer being provided on the side surface of the gate electrode via the gate insulator. The upper or lower main terminal layer is provided on the side surface of the gate electrode via the gate insulator and the semiconductor layer.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: November 5, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takahisa Kanemura, Masaki Kondo
  • Publication number: 20130037823
    Abstract: In one embodiment, a semiconductor device includes a semiconductor substrate, a gate electrode provided on the semiconductor substrate via an insulating layer, and a gate insulator provided on a side surface of the gate electrode. The device includes a stacked layer including a lower main terminal layer of a first conductivity type, an intermediate layer, and an upper main terminal layer of a second conductivity type which are successively stacked on the semiconductor substrate, the stacked layer being provided on the side surface of the gate electrode via the gate insulator. The upper or lower main terminal layer is provided on the side surface of the gate electrode via the gate insulator and the semiconductor layer.
    Type: Application
    Filed: February 23, 2012
    Publication date: February 14, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahisa Kanemura, Masaki Kondo
  • Patent number: 8354706
    Abstract: A semiconductor memory device according to an embodiment of the present invention includes a substrate, a first gate insulator formed on the substrate and serving as an F-N (Fowler-Nordheim) tunneling film, a first floating gate formed on the first gate insulator, a second gate insulator formed on the first floating gate and serving as an F-N tunneling film, a second floating gate formed on the second gate insulator, an intergate insulator formed on the second floating gate and serving as a charge blocking film, and a control gate formed on the intergate insulator, at least one of the first and second floating gates including a metal layer.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: January 15, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takahisa Kanemura, Tomomi Kusaka, Takashi Izumida, Masaki Kondo, Nobutoshi Aoki
  • Patent number: 8258562
    Abstract: A semiconductor device of an example of the invention comprises a memory cell and a select gate transistor provided for the memory cell. A gate electrode of the select gate transistor has a Tri-gate structure in which an upper surface of a gate insulating film formed above a channel of the select gate transistor is set higher than a portion of an upper surface of an element isolation region of the select gate transistor.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: September 4, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Izumida, Takahisa Kanemura, Nobutoshi Aoki
  • Patent number: 8212306
    Abstract: A semiconductor storage device has a semiconductor substrate, a plurality of first insulating films formed on the semiconductor substrate with predetermined spacing therebetween, an element isolation region formed between the first insulating films in a first direction, a floating gate electrode comprising a first charge accumulation film formed on the first insulating film, a second charge accumulation film formed on the first charge accumulation film and having a width in a second direction orthogonal to the first direction smaller than the width of the first charge accumulation film, and a third charge accumulation film formed on the second charge accumulation film and having the width in the second direction larger than the width of the second charge accumulation film, a second insulating film formed on the second charge accumulation film and between the second charge accumulation film and the element isolation region, a third insulating film formed on the charge accumulation film and the element isolatio
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: July 3, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Izumida, Nobutoshi Aoki, Masaki Kondo, Takahisa Kanemura
  • Patent number: 8148217
    Abstract: A method of manufacturing a semiconductor device includes forming a mask layer on a first-conductivity-type semiconductor substrate, etching the semiconductor substrate using the mask layer as a mask, thereby forming a projecting semiconductor layer, forming a first insulating layer on the semiconductor substrate to cover a lower portion of the projecting semiconductor layer, doping a first-conductivity-type impurity into the first insulating layer, thereby forming a high-impurity-concentration layer in the lower portion of the projecting semiconductor layer, forming gate insulating films on side surfaces of the projecting semiconductor layer which upwardly extend from an upper surface of the first insulating layer, and forming a gate electrode on the gate insulating films and on the first insulating film.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 3, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Izumida, Sanae Ito, Takahisa Kanemura
  • Publication number: 20120046924
    Abstract: In one embodiment, there is provided an ion implanting simulating method of implanting incident particles into a substrate, and gaining stationary position coordinates of each of the incident particles in the substrate, thereby calculating the distribution of the incident particles in the substrate. In the method, the followings are repeated desired times by a computer: implanting one of the incident particles into the substrate; calculating the trace of the incident particle traveling in the substrate while undergoing collision with an atom contained in the substrate repeatedly, and the energy lost from the incident particle by the collision, based on a beforehand-inputted composition of the substrate, thereby calculating stationary position coordinates of the incident particle; and renewing the composition of the substrate in accordance with a matter that the substrate contains the implanted incident particle.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 23, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sanae Ito, Takahisa Kanemura
  • Patent number: 8043904
    Abstract: A method of manufacturing a semiconductor device includes forming a mask layer on a first-conductivity-type semiconductor substrate, etching the semiconductor substrate using the mask layer as a mask, thereby forming a projecting semiconductor layer, forming a first insulating layer on the semiconductor substrate to cover a lower portion of the projecting semiconductor layer, doping a first-conductivity-type impurity into the first insulating layer, thereby forming a high-impurity-concentration layer in the lower portion of the projecting semiconductor layer, forming gate insulating films on side surfaces of the projecting semiconductor layer which upwardly extend from an upper surface of the first insulating layer, and forming a gate electrode on the gate insulating films and on the first insulating film.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: October 25, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Izumida, Sanae Ito, Takahisa Kanemura
  • Publication number: 20110231174
    Abstract: A process simulation method includes: converting condition data of plasma doping for introducing an impurity into a semiconductor in a plasma atmosphere to corresponding condition data of ion implantation for implanting impurities as an ion beam into the semiconductor; and calculating device structure data on the basis of the ion implantation condition data converted from the plasma doping condition data.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 22, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomomi Kusaka, Takahisa Kanemura
  • Publication number: 20110207309
    Abstract: A method of manufacturing a semiconductor device includes forming a mask layer on a first-conductivity-type semiconductor substrate, etching the semiconductor substrate using the mask layer as a mask, thereby forming a projecting semiconductor layer, forming a first insulating layer on the semiconductor substrate to cover a lower portion of the projecting semiconductor layer, doping a first-conductivity-type impurity into the first insulating layer, thereby forming a high-impurity-concentration layer in the lower portion of the projecting semiconductor layer, forming gate insulating films on side surfaces of the projecting semiconductor layer which upwardly extend from an upper surface of the first insulating layer, and forming a gate electrode on the gate insulating films and on the first insulating film.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Inventors: Takashi IZUMIDA, Sanae Ito, Takahisa Kanemura