Patents by Inventor Shigeaki Zaima

Shigeaki Zaima 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: 20150371850
    Abstract: Provided is a method of forming a semiconductor thin film. The method may include forming, on a substrate, a thin film that contains one of Ge, Si, and a SiGe mixture, and Sn in a content of 0.1 atomic % or more to 20 atomic % or less, and applying pulsed laser light to the thin film.
    Type: Application
    Filed: August 28, 2015
    Publication date: December 24, 2015
    Applicants: NAGOYA UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, GIGAPHOTON INC., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Masashi KUROSAWA, Noriyuki TAOKA, Osamu NAKATSUKA, Shigeaki ZAIMA, Hiroshi IKENOUE
  • Patent number: 7074676
    Abstract: A memory film operable at a low voltage and a method of manufacturing the memory film; the method, comprising the steps of forming a first insulation film (112) on a semiconductor substrate (111) forming a first electrode, forming a first conductor film (113) on the first insulation film (112), forming a second insulation film (112B) on the surface of the first conductor film (113), forming a third insulation film containing conductor particulates (114, 115) on the second insulation film (112B), and forming a second conductor film forming a second electrode on the third insulation film.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: July 11, 2006
    Assignees: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Iwata, Akihide Shibata, Nobutoshi Arai, Takayuki Ogura, Kouichirou Adachi, Seizo Kakimoto, Yukio Yasuda, Shigeaki Zaima, Akira Sakai
  • Patent number: 7030000
    Abstract: A given metallic oxide film is epitaxially grown on a substrate. Then, the substrate and the metallic oxide film are thermally treated to mix the constituent elements of the substrate with the constituent metallic oxide elements of the metallic oxide film and to form a metallic oxide film of high dielectric constant on the substrate through the mixing of the constituent elements.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: April 18, 2006
    Assignee: Nagoya University
    Inventors: Akira Sakai, Yukio Yasuda, Shigeaki Zaima, Mitsuo Sakashita, Hiroki Kondo, Shinsuke Sakashita
  • Publication number: 20060011916
    Abstract: A substrate for epitaxial growth includes a silicon-containing substrate, a silicon-germanium film, and a network-shaped structure. The silicon-germanium film is formed lamellarly on the silicon-containing substrate. The network-shaped structure is disposed adjacent to an interface between the silicon-containing substrate and the silicon-germanium film, and is composed of a 90-degree-dislocation dislocation line elongating continuously. The 90-degree-dislocation dislocation line making the network-shaped structure elongates remarkably long without being broken to short lengths interruptedly so that the 90-degree dislocation is disposed cyclically in planes parallel to the interface. Accordingly, the 90-degree dislocation is present uniformly in planes parallel to the interface. Consequently, strains in the crystal lattice of the silicon-germanium film have been uniformly relaxed more securely.
    Type: Application
    Filed: March 25, 2005
    Publication date: January 19, 2006
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Akira Sakai, Noriyuki Taoka, Osamu Nakatsuka, Shigeaki Zaima, Yukio Yasuda
  • Publication number: 20050189652
    Abstract: A silicon substrate is prepared, and a titanium intermediate layer is formed on the silicon substrate. Then, a compound element-containing layer containing compound elements to compose an intended silicide film is formed on the titanium intermediate layer, to form a multilayered intermediate structure, which is thermally treated to form the intended silicide film made of silicon elements of the silicon substrate and the compound elements of the compound element-containing layer.
    Type: Application
    Filed: August 26, 2004
    Publication date: September 1, 2005
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Osamu Nakatsuka, Akira Sakai, Shigeaki Zaima, Yukio Yasuda, Kazuya Okubo, Yoshinori Tsuchiya
  • Publication number: 20050087792
    Abstract: A silicon oxide layer is formed at a surface region of a silicon substrate. Then, an amorphous silicon layer 13 is formed preferably in a thickness of 1 nm or below on the silicon substrate via the silicon oxide layer. Then, the amorphous silicon layer 13 is exposed to a silane gas preferably with heating the silicon substrate within a temperature range of 400-800° C. to form a high density and minute silicon nanocrystal.
    Type: Application
    Filed: August 26, 2004
    Publication date: April 28, 2005
    Applicant: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Hiroki Kondo, Yukio Yasuda, Shigeaki Zaima, Akira Sakai, Mitsuo Sakashita, Shinya Naito, Masaki Satake
  • Publication number: 20040259337
    Abstract: A given metallic oxide film is epitaxially grown on a substrate. Then, the substrate and the metallic oxide film are thermally treated to mix the constituent elements of the substrate with the constituent metallic oxide elements of the metallic oxide film and to form a metallic oxide film of high dielectric constant on the substrate through the mixing of the constituent elements.
    Type: Application
    Filed: March 24, 2004
    Publication date: December 23, 2004
    Applicant: NAGOYA UNIVERSITY
    Inventors: Akira Sakai, Yukio Yasuda, Shigeaki Zaima, Mitsuo Sakashita, Hiroki Kondo, Shinsuke Sakashita
  • Publication number: 20040166329
    Abstract: On a given silicon substrate is epitaxially grown a strain-relaxed silicon germanium layer with penetrated dislocations and formed a metallic layer to form a multilayered intermediate structure, which is heated. In this case, metallic elements of the metallic layer are diffused through the penetrated dislocations of the silicon germanium layer to form a thin line structure made of metallic silicide at a boundary face between the silicon base and the silicon germanium layer.
    Type: Application
    Filed: September 12, 2003
    Publication date: August 26, 2004
    Applicant: NAGOYA UNIVERSITY
    Inventors: Akira Sakai, Shigeaki Zaima, Yukio Yasuda, Osamu Nakatsuka
  • Publication number: 20040137735
    Abstract: On a Si substrate are formed successively a Ge interfacial layer as a dislocation controlling layer and a SiGe film. Then, at least at the region of the SiGe film near the Si substrate are formed 90 degrees dislocations.
    Type: Application
    Filed: November 18, 2003
    Publication date: July 15, 2004
    Applicant: NAGOYA UNIVERSITY
    Inventors: Akira Sakai, Osamu Nakatsuka, Shigeaki Zaima, Yukio Yasuda
  • Publication number: 20040115883
    Abstract: A memory film operable at a low voltage and a method of manufacturing the memory film; the method, comprising the steps of forming a first insulation film (112) on a semiconductor substrate (111) forming a first electrode, forming a first conductor film (113) on the first insulation film (112), forming a second insulation film (112B) on the surface of the first conductor film (113), forming a third insulation film containing conductor particulates (114, 115) on the second insulation film (112B), and forming a second conductor film forming a second electrode on the third insulation film.
    Type: Application
    Filed: February 6, 2004
    Publication date: June 17, 2004
    Inventors: Hiroshi Iwata, Akihide Shibata, Nobutoshi Arai, Takayuki Ogura, Kouichirou Adachi, Seizo Kakimoto, Yukio Yasuda, Shigeaki Zaima, Akira Sakai