Patents by Inventor Atsuhiko Ashitani

Atsuhiko Ashitani 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: 20240344194
    Abstract: There is provided a technique capable of forming a low resistance film. The technique includes sequentially repeating: a first step including a first process of supplying a reducing gas containing silicon and hydrogen and not containing halogen, in parallel with supply of a metal-containing gas, to a substrate in a process chamber; a second step including: a second process of stopping the supply of the metal-containing gas, and maintaining the supply of the reducing gas; and a third process of supplying an inert gas into the process chamber with the supply of the reducing gas stopped, and maintaining a pressure in the third process equal to a pressure in the second process or adjusting the pressure in the third process to a pressure different from the pressure in the second process; and a third step of supplying a nitrogen-containing gas to the substrate.
    Type: Application
    Filed: June 3, 2024
    Publication date: October 17, 2024
    Applicant: Kokusai Electric Corporation
    Inventors: Atsuhiko ASHITANI, Arito Ogawa, Kota Kowa
  • Publication number: 20220205089
    Abstract: There is provided a technique capable of detoxifying a process gas even when the detoxification apparatus is stopped. According to one aspect thereof, there is provided a substrate processing apparatus including: a reaction tube; a process gas supplier; an exhauster; an exhaust gas process chamber in which the exhausted process gas is subject to a process; a first inert gas supplier; a second inert gas supplier; an exhaust pipe; and a controller controlling the first and the second inert gas supplier such that the first inert gas is supplied to the exhaust gas process chamber through the first inert gas supplier while the process gas is subject to the process in the exhaust gas process chamber and the second inert gas is supplied to the exhaust gas process chamber through the second inert gas supplier when the process in the exhaust gas process chamber is stopped.
    Type: Application
    Filed: March 16, 2022
    Publication date: June 30, 2022
    Inventors: Masanori SAKAI, Tsutomu KATO, Atsuhiko ASHITANI
  • Publication number: 20220208557
    Abstract: A film having film continuity can be formed. There is provided a technique including: preparing a substrate having a metal-containing film formed on a surface thereof; and slimming the metal-containing film by pulse-supplying a halogen-containing gas to the substrate.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Arito OGAWA, Norikazu MIZUNO, Atsuhiko ASHITANI, Atsuro SEINO, Kota KOWA
  • Publication number: 20210388487
    Abstract: There is provided a technique capable of forming a low resistance film. The technique includes sequentially repeating: a first step including a first process of supplying a reducing gas containing silicon and hydrogen and not containing halogen, in parallel with supply of a metal-containing gas, to a substrate in a process chamber; a second step including: a second process of stopping the supply of the metal-containing gas, and maintaining the supply of the reducing gas; and a third process of supplying an inert gas into the process chamber with the supply of the reducing gas stopped, and maintaining a pressure in the third process equal to a pressure in the second process or adjusting the pressure in the third process to a pressure different from the pressure in the second process; and a third step of supplying a nitrogen-containing gas to the substrate.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Atsuhiko ASHITANI, Arito OGAWA, Kota KOWA
  • Patent number: 9972500
    Abstract: The present invention is provided to improve quality or manufacturing throughput of a semiconductor device. A method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: May 15, 2018
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Publication number: 20170047227
    Abstract: The present invention is provided to improve quality or manufacturing throughput of a semiconductor device. A method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Application
    Filed: October 26, 2016
    Publication date: February 16, 2017
    Inventors: Yukinao KAGA, Arito OGAWA, Atsuro SEINO, Atsuhiko ASHITANI, Ryohei MAENO, Masanori SAKAI
  • Patent number: 9508555
    Abstract: To improve quality or manufacturing throughput of a semiconductor device, a method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 29, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Publication number: 20140295667
    Abstract: To improve quality or manufacturing throughput of a semiconductor device, a method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Publication number: 20100083898
    Abstract: There are provided an inner tube in which a substrate is stored; an outer tube surrounding the inner tube; a gas nozzle disposed in the inner tube; a gas ejection hole opened on the gas nozzle; a gas supply unit supplying gas into the inner tube through the gas nozzle; a gas exhausts hole opened on the side wall of the inner tube; and an exhaust unit exhausting a space between the outer tube and the inner tube and generating a gas flow in the inner tube toward the gas exhaust hole from the gas ejection hole, wherein the side wall of the inner tube is constituted, so that a distance between an outer edge of the substrate and the gas exhaust hole is set to be longer than a distance between the outer edge of the substrate and the gas ejection hole.
    Type: Application
    Filed: July 23, 2009
    Publication date: April 8, 2010
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Shintaro Kogura, Yuji Takebayashi, Atsuhiko Ashitani, Satoshi Okada
  • Patent number: D610559
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: February 23, 2010
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Satoshi Okada, Yuji Takebayashi, Tsutomu Kato, Atsuhiko Ashitani, Shintaro Kogura