Patents by Inventor Yuki Taira

Yuki Taira 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: 20230335398
    Abstract: According to one aspect of the technique of the present disclosure, there is provided a substrate processing method including: forming a film on a substrate by performing a cycle a predetermined number of times, wherein the cycle includes: (a) supplying a source gas to the substrate; (b) supplying a plasma-excited gas containing nitrogen and hydrogen to the substrate by exciting a gas containing nitrogen and hydrogen into a plasma state; and (c) supplying a plasma-excited inert gas to the substrate by exciting an inert gas into a plasma state, wherein a pressure of a space where the substrate is present is set to be lower in (c) than in (b).
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Inventors: Yuki TAIRA, Tsuyoshi TAKEDA, Masaru KADOSHIMA
  • Patent number: 9786493
    Abstract: A semiconductor device manufacturing method, including: mounting substrates on a mounting table within a processing chamber along a rotation direction of the table; starting to supply a first-element-containing gas to a first region in the chamber along the rotation direction, while rotating the table and exhausting the processing chamber; starting to supply a second-element-containing gas to a second region in the chamber; starting to generate, by a plasma generating unit in the second region, plasma of the second-element-containing gas in the second region to have a first activity; and forming a thin film containing first and second elements on the substrates by rotating the table to cause the substrates to sequentially pass through the first and second regions in turn so that a first-element-containing layer is formed in the first region and is modified in the second region by generating plasma having a second activity higher than the first activity.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: October 10, 2017
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tatsushi Ueda, Junichi Tanabe, Katsuhiko Yamamoto, Yuki Taira, Naofumi Ohashi, Hideharu Itatani
  • Publication number: 20160284532
    Abstract: A semiconductor device manufacturing method, including: mounting substrates on a mounting table within a processing chamber along a rotation direction of the table; starting to supply a first-element-containing gas to a first region in the chamber along the rotation direction, while rotating the table and exhausting the processing chamber; starting to supply a second-element-containing gas to a second region in the chamber; starting to generate, by a plasma generating unit in the second region, plasma of the second-element-containing gas in the second region to have a first activity; and forming a thin film containing first and second elements on the substrates by rotating the table to cause the substrates to sequentially pass through the first and second regions in turn so that a first-element-containing layer is formed in the first region and is modified in the second region by generating plasma having a second activity higher than the first activity.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 29, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tatsushi UEDA, Junichi TANABE, Katsuhiko YAMAMOTO, Yuki TAIRA, Naofumi OHASHI, Hideharu ITATANI
  • Patent number: 9441294
    Abstract: A high quality thin film is formed by forming a layer in which remaining residues are suppressed for each cycle. When a substrate sequentially passes through a first processing region, a second processing region, and a third processing region by rotating a substrate placement unit, a first layer is formed on the substrate while the substrate passes through the first processing region, a second layer is formed by reacting plasma of a reactive gas with the first layer while the substrate passes through the second processing region, and the second layer is modified by plasma of a modifying gas while the substrate passes through the third processing region.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: September 13, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Katsuhiko Yamamoto, Yuki Taira
  • Publication number: 20150325434
    Abstract: A high quality thin film is formed by forming a layer in which remaining residues are suppressed for each cycle. When a substrate sequentially passes through a first processing region, a second processing region, and a third processing region by rotating a substrate placement unit, a first layer is formed on the substrate while the substrate passes through the first processing region, a second layer is formed by reacting plasma of a reactive gas with the first layer while the substrate passes through the second processing region, and the second layer is modified by plasma of a modifying gas while the substrate passes through the third processing region.
    Type: Application
    Filed: March 3, 2015
    Publication date: November 12, 2015
    Inventors: Katsuhiko YAMAMOTO, Yuki TAIRA
  • Publication number: 20110025221
    Abstract: Device generating high-luminance and highly-efficient ultraviolet rays by applying polyphase alternating current discharge plasma in a multi-poled magnetic field to a light source for generating ultraviolet rays and using a usual molecular gas other than mercury and rare gases. The inside of a flat container 3 is evacuated, and 1 Torr or less of a molecular gas for use in discharge light emission fills therein or is flowed thereinto. Next, a phase-controlled twelve-output alternating current power supply of 1 kW or lower is connected to twelve divisional electrodes 1 for supply of discharge electric energy. Thus, plasma P occurs with stable alternating-current glow discharge along the surface of the divisional electrodes 1 covered with a barrier layer 2. As a result of discharge, light with a wavelength unique to the molecular gas that contains ultraviolet rays is emitted and extracted outside from a light extraction window 32.
    Type: Application
    Filed: April 1, 2009
    Publication date: February 3, 2011
    Applicant: TOYAMA PREFECTURE
    Inventors: Kazunori Matsumoto, Yuki Taira