Patents by Inventor Atsuko Sakata

Atsuko Sakata 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: 20140070417
    Abstract: According to one embodiment, a semiconductor device having an interlayer insulating film, a molybdenum containing layer, a barrier metal layer and a plug material layer is provided. The interlayer insulating film is formed on a substrate or on a conductive layer formed on a substrate. The interlayer insulating film has a hole reaching the substrate or the conductive layer. The molybdenum containing layer is formed in the substrate or in the conductive layer at a bottom portion of the hole. The barrier metal layer is formed on the molybdenum containing layer and on a side surface of the hole. A portion of the barrier metal layer is formed on the side surface contains at least molybdenum. A portion of the barrier metal layer is formed on the molybdenum containing layer includes at least a molybdenum silicate nitride film. The plug material layer is formed via the barrier metal layer.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 13, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Atsuko SAKATA, Takeshi ISHIZAKI
  • Patent number: 8648464
    Abstract: According to one embodiment, a semiconductor device is disclosed. The device includes a semiconductor substrate, and an interconnection above the semiconductor substrate. The interconnection includes a co-catalyst layer, a catalyst layer on the co-catalyst layer, and a graphene layer on the catalyst layer. The co-catalyst layer includes a portion contacting the catalyst layer. The portion has a face-centered cubic structure with a (111) plane oriented parallel to a surface of the semiconductor substrate. The catalyst layer has a face-centered cubic structure with a (111) plane oriented parallel to the surface of the semiconductor substrate.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: February 11, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masayuki Kitamura, Makoto Wada, Yuichi Yamazaki, Masayuki Katagiri, Atsuko Sakata, Akihiro Kajita, Tadashi Sakai, Naoshi Sakuma, Ichiro Mizushima
  • Patent number: 8637380
    Abstract: According to one embodiment, a method of manufacturing a semiconductor device including forming a metal film on aback surface of a glass substrate which supports a semiconductor substrate on a front surface thereof; forming a metal oxide film by oxidizing the whole or at least a portion of the metal film from the front surface; forming protective film, such as silicon nitride, on the metal oxide film; holding the front surface of the protective film with an electrostatic chuck; and forming a via for electrical connection in the semiconductor substrate while the front surface of the protective film is in contact with by the electrostatic chuck; then using a laser to delaminate the glass substrate from the semiconductor substrate.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: January 28, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsuko Sakata, Kazuyuki Higashi, Akiko Nomachi, Takeshi Ishizaki
  • Publication number: 20130252421
    Abstract: According to one embodiment, a method of manufacturing a semiconductor device including forming a metal film on aback surface of a glass substrate which supports a semiconductor substrate on a front surface thereof; forming a metal oxide film by oxidizing the whole or at least a portion of the metal film from the front surface; forming protective film, such as silicon nitride, on the metal oxide film; holding the front surface of the protective film with an electrostatic chuck; and forming a via for electrical connection in the semiconductor substrate while the front surface of the protective film is in contact with by the electrostatic chuck; then using a laser to delaminate the glass substrate from the semiconductor substrate.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 26, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Atsuko Sakata, Kazuyuki Higashi, Akiko Nomachi, Takeshi Ishizaki
  • Patent number: 8536706
    Abstract: A method for fabricating a semiconductor device, includes forming a dielectric film above a substrate; forming an opening in the dielectric film; forming a first film containing a metal whose energy for forming silicide thereof is lower than that of Cu silicide inside the opening; forming a second film that is conductive and contains copper (Cu) in the opening in which the first film containing the metal is formed; and forming a compound film containing Cu and silicon (Si) selectively on the second film in an atmosphere in which a temperature of the substrate is below 300° C.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 17, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yumi Hayashi, Atsuko Sakata, Kei Watanabe, Noriaki Matsunaga, Shinichi Nakao, Makoto Wada, Hiroshi Toyoda
  • Publication number: 20130217226
    Abstract: According to one embodiment, a method for manufacturing a semiconductor device is disclosed. The method includes forming a co-catalyst layer and catalyst layer above a surface of a semiconductor substrate. The co-catalyst layer and catalyst layer have fcc structure. The fcc structure is formed such that (111) face of the fcc structure is to be oriented parallel to the surface of the semiconductor substrate. The catalyst includes a portion which contacts the co-catalyst layer. The portion has the fcc structure. An exposed surface of the catalyst layer is planarized by oxidation and reduction treatments. A graphene layer is formed on the catalyst layer.
    Type: Application
    Filed: September 18, 2012
    Publication date: August 22, 2013
    Inventors: Masayuki KITAMURA, Atsuko SAKATA, Makoto WADA, Yuichi YAMAZAKI, Masayuki KATAGIRI, Akihiro KAJITA, Tadashi SAKAI, Naoshi SAKUMA, Ichiro MIZUSHIMA
  • Patent number: 8487449
    Abstract: According to one embodiment, a carbon nanotube interconnection includes a first conductive layer, an insulating film, a catalyst underlying film, a catalyst deactivation film, a catalyst film, and carbon nanotubes. An insulating film is formed on the first conductive layer and including a hole. An catalyst underlying film is formed on the first conductive layer on a bottom surface in the hole and on the insulating film on a side surface in the hole. A catalyst deactivation film is formed on the catalyst underlying film on the side surface in the hole. A catalyst film is formed on the catalyst underlying film on the bottom surface in the hole and the catalyst deactivation film on the side surface in the hole. Carbon nanotubes are formed in the hole, the carbon nanotubes including one end in contact with the catalyst film on the bottom surface in the hole.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: July 16, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Wada, Yuichi Yamazaki, Masayuki Katagiri, Masayuki Kitamura, Atsuko Sakata, Akihiro Kajita, Tadashi Sakai, Naohsi Sakuma
  • Patent number: 8482126
    Abstract: According to an embodiment of the present invention, a device includes a substrate, a base body formed on or above the substrate, and a pair of wirings. The base body has a line shape in a plan view and extends along a length direction. The pair of wirings includes first and second catalyst layers formed on both side surfaces of the base body in the length direction of the base body with sandwiching the base body; and first and second graphene layers formed on both side surfaces of the base body in a manner of contacting the first and second catalyst layers, respectively, and extending along the length direction of the base body, the graphene layers includes a plurality of graphenes laminated perpendicularly with respect to both side surfaces of the base body, respectively.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 9, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Wada, Yuichi Yamazaki, Akihiro Kajita, Atsuko Sakata
  • Publication number: 20130154087
    Abstract: According to one embodiment, a method for forming an interconnection pattern includes forming an insulating pattern, forming a self-assembled film, and forming a conductive layer. The insulating pattern has a side surface on a major surface of a matrix. The self-assembled film has an affinity with a material of the insulating pattern on the side surface of the insulating pattern. The forming the conductive layer includes depositing a conductive material on a side surface of the self-assembled film.
    Type: Application
    Filed: June 18, 2012
    Publication date: June 20, 2013
    Inventors: Yasuhito YOSHIMIZU, Satoshi Wakatsuki, Hisashi Okuchi, Atsuko Sakata, Hiroshi Tomita
  • Publication number: 20130093090
    Abstract: A method for fabricating a semiconductor device, includes forming a dielectric film above a substrate; forming an opening in the dielectric film; forming a first film containing a metal whose energy for forming silicide thereof is lower than that of Cu silicide inside the opening; forming a second film that is conductive and contains copper (Cu) in the opening in which the first film containing the metal is formed; and forming a compound film containing Cu and silicon (Si) selectively on the second film in an atmosphere in which a temperature of the substrate is below 300° C.
    Type: Application
    Filed: December 6, 2012
    Publication date: April 18, 2013
    Inventors: Yumi HAYASHI, Atsuko Sakata, Kei Watanabe, Noriaki Matsunaga, Shinichi Nakao, Makoto Wada, Hiroshi Toyoda
  • Publication number: 20130075912
    Abstract: According to one embodiment, a method for manufacturing a semiconductor device includes: forming a silicon oxide film on a semiconductor substrate; forming a via in the silicon oxide film; forming a contact layer inside the via; forming a silicon layer on the contact layer; and forming a tungsten film embedded in the via by making a tungsten-containing gas react with the silicon layer.
    Type: Application
    Filed: March 20, 2012
    Publication date: March 28, 2013
    Inventors: Satoshi Wakatsuki, Ichiro Mizushima, Atsuko Sakata, Masayuki Kitamura
  • Publication number: 20130056873
    Abstract: According to an embodiment of the present invention, a device includes a substrate, a base body formed on or above the substrate, and a pair of wirings. The base body has a line shape in a plan view and extends along a length direction. The pair of wirings includes first and second catalyst layers formed on both side surfaces of the base body in the length direction of the base body with sandwiching the base body; and first and second graphene layers formed on both side surfaces of the base body in a manner of contacting the first and second catalyst layers, respectively, and extending along the length direction of the base body, the graphene layers includes a plurality of graphenes laminated perpendicularly with respect to both side surfaces of the base body, respectively.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 7, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto Wada, Yuichi Yamazaki, Akihiro Kajita, Atsuko Sakata
  • Patent number: 8344509
    Abstract: A method for fabricating a semiconductor device, includes forming a dielectric film above a substrate; forming an opening in the dielectric film; forming a first film containing a metal whose energy for forming silicide thereof is lower than that of Cu silicide inside the opening; forming a second film that is conductive and contains copper (Cu) in the opening in which the first film containing the metal is formed; and forming a compound film containing Cu and silicon (Si) selectively on the second film in an atmosphere in which a temperature of the substrate is below 300° C.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: January 1, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yumi Hayashi, Atsuko Sakata, Kei Watanabe, Noriaki Matsunaga, Shinichi Nakao, Makoto Wada, Hiroshi Toyoda
  • Publication number: 20120306081
    Abstract: According to one embodiment, a semiconductor device includes an interconnect provided on a first interlayer insulating film covering a semiconductor substrate in which an element is formed, a cap layer provided on the upper surface of the interconnect, and a barrier film provided between the interconnect and a second interlayer insulating film covering the interconnect. The interconnect includes a high-melting-point conductive layer, and the width of the interconnect is smaller than the width of the cap layer. The barrier film includes a compound of a contained element in the high-melting-point conductive layer.
    Type: Application
    Filed: March 22, 2012
    Publication date: December 6, 2012
    Inventors: Takeshi ISHIZAKI, Atsuko Sakata, Junichi Wada, Masahiko Hasunuma
  • Publication number: 20120228614
    Abstract: According to one embodiment, a semiconductor device is disclosed. The device includes a semiconductor substrate, and an interconnection above the semiconductor substrate. The interconnection includes a co-catalyst layer, a catalyst layer on the co-catalyst layer, and a graphene layer on the catalyst layer. The co-catalyst layer includes a portion contacting the catalyst layer. The portion has a face-centered cubic structure with a (111) plane oriented parallel to a surface of the semiconductor substrate. The catalyst layer has a face-centered cubic structure with a (111) plane oriented parallel to the surface of the semiconductor substrate.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Inventors: Masayuki Kitamura, Makoto Wada, Yuichi Yamazaki, Masayuki Katagiri, Atsuko Sakata, Akihiro Kajita, Tadashi Sakai, Naoshi Sakuma, Ichiro Mizushima
  • Patent number: 8226958
    Abstract: A novel prophylactic/remedy for immunopathy is provided which is not neutralized by a neutralizing antibody to Staphylococcal enterotoxin B (SEB), known as one of superantigens, and may effectively act as a superantigen. A modified SEB having a reduced reactivity with a neutralizing antibody to SEB (anti-SEB antibody) and a prophylactic/remedy for immunopathy comprising as an active ingredient said modified SEB. The modified SEB of the present invention may be prepared with the evolutionary molecular engineering technique by introducing amino acid substitution in the amino acid sequence of SEB, especially at an epitope recognition site of the anti-SEB antibody in the amino acid sequence of SEB.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: July 24, 2012
    Assignees: Juridical Foundation the Chemo-Sero-Therapeutic Research Institute, Kowa Company, Ltd.
    Inventors: Toshihiro Nakashima, Takumi Sasaki, Kazuhiko Kimachi, Shigeki Kuwata, Tsukasa Nishihara, Atsuko Sakata, Masao Ohkuchi, Tomoyuki Koshi, Toshiyuki Edano
  • Publication number: 20120152168
    Abstract: A method for manufacturing a semiconductor device includes heating a substrate having an insulation film thereon to a first substrate temperature so that oxidizing species are emitted from the insulating film, the insulating film having a recessed portion formed in a surface thereof, forming a metal film on the insulating film at a second substrate temperature lower than the first substrate temperature, and oxidizing at least part of the metal film with oxidizing species remaining in the insulating film.
    Type: Application
    Filed: February 29, 2012
    Publication date: June 21, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Atsuko Sakata, Junichi Wada, Seiichi Omoto, Masaaki Hatano, Soichi Yamashita, Kazuyuki Higashi, Naofumi Nakamura, Masaki Yamada, Kazuya Kinoshita, Tomio Katata, Masahiko Hasunuma
  • Publication number: 20120080661
    Abstract: According to one embodiment, a graphene interconnection includes an insulating film, a catalyst film, and a graphene layer. An insulating film includes an interconnection trench. A catalyst film is formed in the interconnection trench and filling at least a portion of the interconnection trench. A graphene layer is formed on the catalyst film in the interconnection trench, and including graphene sheets stacked in a direction perpendicularly to a bottom surface of the interconnection trench.
    Type: Application
    Filed: August 24, 2011
    Publication date: April 5, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuro Saito, Makoto Wada, Akihiro Kajita, Atsuko Sakata
  • Patent number: 8148274
    Abstract: A method for manufacturing a semiconductor device includes heating a substrate having an insulation film thereon to a first substrate temperature so that oxidizing species are emitted from the insulating film, the insulating film having a recessed portion formed in a surface thereof, forming a metal film on the insulating film at a second substrate temperature lower than the first substrate temperature, and oxidizing at least part of the metal film with oxidizing species remaining in the insulating film.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: April 3, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Junichi Wada, Atsuko Sakata, Seiichi Omoto, Masaaki Hatano, Soichi Yamashita, Kazuyuki Higashi, Naofumi Nakamura, Masaki Yamada, Kazuya Kinoshita, Tomio Katata, Masahiko Hasunuma
  • Publication number: 20120049370
    Abstract: According to one embodiment, a carbon nanotube interconnection includes a first conductive layer, an insulating film, a catalyst underlying film, a catalyst deactivation film, a catalyst film, and carbon nanotubes. An insulating film is formed on the first conductive layer and including a hole. An catalyst underlying film is formed on the first conductive layer on a bottom surface in the hole and on the insulating film on a side surface in the hole. A catalyst deactivation film is formed on the catalyst underlying film on the side surface in the hole. A catalyst film is formed on the catalyst underlying film on the bottom surface in the hole and the catalyst deactivation film on the side surface in the hole. Carbon nanotubes are formed in the hole, the carbon nanotubes including one end in contact with the catalyst film on the bottom surface in the hole.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 1, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto Wada, Yuichi Yamazaki, Masayuki Katagiri, Masayuki Kitamura, Atsuko Sakata, Akihiro Kajita, Tadashi Sakai, Naohsi Sakuma