Patents by Inventor Kiyotaka Miyano

Kiyotaka Miyano 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: 20110076842
    Abstract: An ion implantation is performed to implant ions into a silicon substrate, and a microwave irradiation is performed to irradiate the silicon substrate with microwaves after the ion implantation. After the microwave irradiation, the silicon substrate is transferred to a heat-treatment apparatus, where the silicon substrate is treated with heat by being irradiated with light having a pulse width ranging from 0.1 milliseconds to 100 milliseconds, both inclusive.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Inventors: Kenichi YOSHINO, Kiyotaka Miyano, Tomonori Aoyama
  • Patent number: 7902030
    Abstract: A manufacturing method for semiconductor device includes: forming an opening, in a surface of a semiconductor substrate being composed of first atom, the opening having an opening ratio y to an area of the surface of the semiconductor substrate ranging from 5 to 30%; forming an epitaxial layer in the opening, the epitaxial layer being made of a mixed crystal containing a second atom in a concentration ranging from 15 to 25%, and the second atom having a lattice constant different from a lattice constant of the first atom; implanting impurity ion into the epitaxial layer; and performing activation annealing at a predetermined temperature T, the predetermined temperature T being equal to or higher than 1150° C. and satisfies a relationship of y?1E-5exp(21541/T).
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: March 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takayuki Ito, Yusuke Oshiki, Kouji Matsuo, Kenichi Yoshino, Takaharu Itani, Takuo Ohashi, Toshihiko Iinuma, Kiyotaka Miyano, Kunihiro Miyazaki
  • Publication number: 20110001170
    Abstract: A semiconductor device according to the embodiment includes an element region provided with a transistor, a plurality of mixed crystal layers, a drain electrode and a source electrode, an element isolation layer and a dummy pattern. The mixed crystal layers are the layers made of a first atom composing the semiconductor substrate and a second atom having a lattice constant different from the lattice constant of the first atom and formed on both ends of a region, which becomes a channel of the transistor. The dummy pattern is a layer made of the same material as the mixed crystal layers and formed to extend on the surface of the semiconductor substrate and outside of the element region such that a major direction thereof is different from a <110> direction of the semiconductor.
    Type: Application
    Filed: June 24, 2010
    Publication date: January 6, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takayuki Ito, Kunihiro Miyazaki, Kiyotaka Miyano
  • Publication number: 20100273300
    Abstract: This disclosure concerns a semiconductor device comprising a convex-shaped semiconductor layer formed on a semiconductor substrate; an insulation film formed on the semiconductor substrate, the insulation film having a film thickness to the extent that a lower part of the semiconductor layer is buried; a gate electrode formed on a set of both opposed side faces via a gate insulation film; and a source region and a drain region formed on a side face side on which the gate electrode is not formed in the semiconductor layer, wherein the semiconductor layer is formed so as to dispose surfaces of a peripheral part excepting a central part on an outer side than surfaces of the central part covered by at least the gate electrode.
    Type: Application
    Filed: July 1, 2010
    Publication date: October 28, 2010
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Kiyotaka Miyano
  • Patent number: 7772671
    Abstract: A semiconductor device including a semiconductor substrate having on its surface a recess and at least one projection formed in the recess. The projection has a channel region and an element isolating insulating film is formed in the recess. A MIS type semiconductor element is formed on the semiconductor substrate and includes a gate electrode formed on the channel region of the projection via a gate insulating film. Source and drain regions are formed to pinch the channel region of the projection therebetween. A channel region of the MIS type semiconductor element is formed to reach the at least one projection located adjacent to the MIS type semiconductor element in its channel width direction via the recess. A top surface of the at least one projection is located higher than the top surface of the element isolating insulating film by 20 nm or more.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: August 10, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kyoichi Suguro, Kiyotaka Miyano, Ichiro Mizushima, Yoshitaka Tsunashima, Takayuki Hiraoka, Yasushi Akasaka, Tsunetoshi Arikado
  • Patent number: 7772640
    Abstract: This disclosure concerns a semiconductor device comprising a convex-shaped semiconductor layer formed on a semiconductor substrate; an insulation film formed on the semiconductor substrate, the insulation film having a film thickness to the extent that a lower part of the semiconductor layer is buried; a gate electrode formed on a set of both opposed side faces via a gate insulation film; and a source region and a drain region formed on a side face side on which the gate electrode is not formed in the semiconductor layer, wherein the semiconductor layer is formed so as to dispose surfaces of a peripheral part excepting a central part on an outer side than surfaces of the central part covered by at least the gate electrode.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 10, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kiyotaka Miyano
  • Publication number: 20100029053
    Abstract: A method of manufacturing a semiconductor device for forming an n-type FET has forming an isolation insulating film on a surface of the semiconductor substrate consisting primarily of silicon, the isolation insulating film partitioning a device region of the semiconductor substrate; forming a gate insulating film on the device region of the semiconductor substrate; forming a gate electrode on the gate insulating film; amorphizing regions to be source/drain contact regions adjacent to the gate electrode, of the device region, by ion implanting of one of a carbon cluster ion, a carbon monomer ion and a molecular ion containing carbon into the regions to be the source/drain contact regions; forming an impurity-implanted layer to be the source/drain contact regions by ion implanting at least one of arsenic and phosphorus as an n-type impurity into the amorphized regions; and activating the carbon and the impurity in the impurity-implanted layer by heat treatment.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 4, 2010
    Inventors: Hiroshi Itokawa, Ichiro Mizushima, Kiyotaka Miyano
  • Publication number: 20090309133
    Abstract: A manufacturing method for semiconductor device includes: forming an opening, in a surface of a semiconductor substrate being composed of first atom, the opening having an opening ratio y to an area of the surface of the semiconductor substrate ranging from 5 to 30%; forming an epitaxial layer in the opening, the epitaxial layer being made of a mixed crystal containing a second atom in a concentration ranging from 15 to 25%, and the second atom having a lattice constant different from a lattice constant of the first atom; implanting impurity ion into the epitaxial layer; and performing activation annealing at a predetermined temperature T, the predetermined temperature T being equal to or higher than 1150° C. and satisfies a relationship of y?1E-5exp(21541/T).
    Type: Application
    Filed: June 12, 2009
    Publication date: December 17, 2009
    Inventors: Takayuki Ito, Yusuke Oshiki, Kouji Matsuo, Kenichi Yoshino, Takaharu Itani, Takuo Ohashi, Toshihiko Iinuma, Kiyotaka Miyano, Kunihiro Miyazaki
  • Patent number: 7602013
    Abstract: A semiconductor device includes: a layer provided on or above a semiconductor substrate, having an opening, and containing Si and Ge; and a gate provided at a position corresponding to the opening. It is possible to provide a semiconductor device and a manufacturing method of the same which realize easy control of a recess amount and reduction in damage at the time of the recessing.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 13, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiyotaka Miyano, Ichiro Mizushima, Kouji Matsuo
  • Publication number: 20090233451
    Abstract: Claimed and disclosed is a semiconductor device including a transistor having a gate insulating film structure containing nitrogen or fluorine in a compound, such as metal silicate, containing metal, silicon and oxygen, a gate insulating film structure having a laminated structure of an amorphous metal oxide film and metal silicate film, or a gate insulating film structure having a first gate insulating film including an oxide film of a first metal element and a second gate insulating film including a metal silicate film of a second metal element.
    Type: Application
    Filed: May 26, 2009
    Publication date: September 17, 2009
    Inventors: Yoshitaka Tsunashima, Seiji Ihumiya, Yasumasa Suizu, Yoshio Ozawa, Kiyotaka Miyano, Masayuki Tanaka
  • Patent number: 7544593
    Abstract: Claimed and disclosed is a semiconductor device including a transistor having a gate insulating film structure containing nitrogen or fluorine in a compound, such as metal silicate, containing metal, silicon and oxygen, a gate insulating film structure having a laminated structure of an amorphous metal oxide film and metal silicate film, or a gate insulating film structure having a first gate insulating film including an oxide film of a first metal element and a second gate insulating film including a metal silicate film of a second metal element.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: June 9, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Tsunashima, Seiji Ihumiya, Yasumasa Suizu, Yoshio Ozawa, Kiyotaka Miyano, Masayuki Tanaka
  • Patent number: 7525154
    Abstract: A semiconductor substrate and a manufacturing method therefore, and a semiconductor device using the semiconductor substrate comprise a strained Si region and unstrained Si region formed at substantially the same level. In an aspect of the invention, a semiconductor substrate is provided by comprising a support substrate, a first semiconductor region including a first silicon layer formed above the support substrate, a second semiconductor region including a strained second silicon layer formed above the support substrate, a surface of the second silicon layer being formed at substantially the same level as a surface of the first silicon layer, and an insulating film at an interface between the first semiconductor region and the second semiconductor region.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: April 28, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Nagano, Ichiro Mizushima, Kiyotaka Miyano
  • Patent number: 7459748
    Abstract: A semiconductor memory device includes: a semiconductor substrate; a semiconductor layer formed on the semiconductor substrate with an insulating film interposed therebetween, the semiconductor layer being in contact with the semiconductor substrate via an opening formed in the insulating film; and a NAND cell unit formed on the semiconductor layer with a plurality of electrically rewritable and non-volatile memory cells connected in series and first and second select gate transistors disposed at both ends thereof.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: December 2, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Riichiro Shirota, Fumitaka Arai, Toshiyuki Enda, Hiroyoshi Tanimoto, Naoki Kusunoki, Nobutoshi Aoki, Makoto Mizukami, Kiyotaka Miyano, Ichiro Mizushima
  • Publication number: 20080224252
    Abstract: In using an epitaxial growth method to selectively grow on a silicon substrate an epitaxial layer on which an element is to be formed, the epitaxial layer is formed so as to extend upward above a thermal oxide film that is an element isolating insulating film, in order to prevent formation of facets. Subsequently, unwanted portions of the epitaxial layer are removed by means of CMP to complete an STI element isolating structure.
    Type: Application
    Filed: February 8, 2008
    Publication date: September 18, 2008
    Inventors: Kyoichi Suguro, Kiyotaka Miyano, Ichiro Mizushima, Yoshitaka Tsunashima, Takayuki Hiraoka, Yasushi Akasaka, Tsunetoshi Arikado
  • Patent number: 7416942
    Abstract: A method for manufacturing a semiconductor device is provided. The method includes successively forming a first silicon film and a mask film above a semiconductor substrate through a gate insulating film, forming a plurality of trenches in the first silicon film and in the mask film to a depth to reach the semiconductor substrate, filling the plurality of trenches with the silicon oxide film, removing the mask film to expose the first silicon film existing between the silicon oxide films, selectively growing a second silicon film on the first silicon film, planarizing the second silicon film using an alkaline slurry exhibiting a pH of 13 or less and containing abrasive grains and a cationic surfactant, thereby obtaining a floating gate electrode film comprising the first and second silicon films, forming an interelectrode insulating film on the entire surface, and forming a control gate electrode film on the interelectrode insulating film.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 26, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukiteru Matsui, Shinichi Hirasawa, Atsushi Shigeta, Kiyotaka Miyano, Takeshi Nishioka, Hiroyuki Yano
  • Publication number: 20080102616
    Abstract: Claimed and disclosed is a semiconductor device including a transistor having a gate insulating film structure containing nitrogen or fluorine in a compound, such as metal silicate, containing metal, silicon and oxygen, a gate insulating film structure having a laminated structure of an amorphous metal oxide film and metal silicate film, or a gate insulating film structure having a first gate insulating film including an oxide film of a first metal element and a second gate insulating film including a metal silicate film of a second metal element.
    Type: Application
    Filed: December 7, 2007
    Publication date: May 1, 2008
    Inventors: Yoshitaka Tsunashima, Seiji Ihumiya, Yasumasa Suizu, Yoshio Ozawa, Kiyotaka Miyano, Masayuki Tanaka
  • Patent number: 7365362
    Abstract: According to one aspect of the invention, there is provided a semiconductor device fabrication method comprising: forming a gate insulating film on a semiconductor substrate; forming a film containing a predetermined semiconductor material and germanium on the gate insulating film; oxidizing the film to form a first film having a germanium concentration higher than that of the film and a film thickness smaller than that of the film on the gate insulating film, and form an oxide film on the first film; removing the oxide film; forming, on the first film, a second film containing the semiconductor material and having a germanium concentration lower than that of the first film; forming a gate electrode by etching the second and first films; and forming a source region and drain region by ion-implanting a predetermined impurity by using the gate electrode as a mask.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: April 29, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kiyotaka Miyano
  • Patent number: 7361960
    Abstract: A first insulator film and a first polysilicon film are formed on first and second element regions of a semiconductor substrate. The first insulator film and first polysilicon film are removed from the second element region. A second insulator film is formed on the second element region from which the first insulator film and first polysilicon film are removed, and a second polysilicon film is formed on the second insulator film. The first polysilicon film is processed, forming a first gate electrode at the first element region. The second polysilicon film is processed, forming a second gate electrode at the second element region. A silicon nitride film is removed from an element-isolation region. A metal film is formed on the region from which the silicon nitride film has been removed, and connects the first and second gate electrodes.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: April 22, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Tsunashima, Kiyotaka Miyano, Yukihiro Ushiku
  • Publication number: 20070298594
    Abstract: A semiconductor device fabrication method includes forming an insulating film having an opening on the major surface of single-crystal silicon, and forming an amorphous silicon film on the surface of the single-crystal silicon exposed in the opening and on the surface of the insulating film. The semiconductor device fabrication method further includes performing annealing to change the amorphous silicon film into a single crystal, and forming a single-crystal silicon film, SiGe film, or carbon-containing silicon film by vapor phase growth on a region where the amorphous silicon film is changed into a single crystal.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 27, 2007
    Inventors: Ichiro Mizushima, Kiyotaka Miyano, Katsuaki Natori, Yoshio Ozawa
  • Patent number: 7306994
    Abstract: Claimed and disclosed is a semiconductor device including a transistor having a gate insulating film structure containing nitrogen or fluorine in a compound, such as metal silicate, containing metal, silicon and oxygen, a gate insulating film structure having a laminated structure of an amorphous metal oxide film and metal silicate film, or a gate insulating film structure having a first gate insulating film including an oxide film of a first metal element and a second gate insulating film including a metal silicate film of a second metal element.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: December 11, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Tsunashima, Seiji Inumiya, Yasumasa Suizu, Yoshio Ozawa, Kiyotaka Miyano, Masayuki Tanaka