Patents by Inventor Yasuhiro Megawa

Yasuhiro Megawa 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: 20240105465
    Abstract: There is provided a technique that includes: (a) supplying a first gas containing a Group 14 element to a substrate including a recess; (b) supplying a second gas containing a Group 15 or Group 13 element to the substrate; (c) forming a first film containing the Group 14 element in the recess by performing (a) and (b) with the second gas at a first concentration, and stopping film formation before the recess is filled up with the first film; and (d) after (c), performing (b) with the second gas at a second concentration and heat-treating the substrate.
    Type: Application
    Filed: September 22, 2023
    Publication date: March 28, 2024
    Applicant: Kokusai Electric Corporation
    Inventors: Takahiro MIYAKURA, Akito Hirano, Yasunobu Koshi, Yasuhiro Megawa
  • Publication number: 20230349065
    Abstract: There is provided a technique that includes: (a) forming a first film containing a Group 14 element on a substrate at a film-forming temperature; (b) performing a crystal growth of the first film by performing a heat treatment to the first film at a first temperature; and (c) moving the Group 14 element contained in at least part of the first film toward the substrate to crystallize the first film by performing the heat treatment to the first film at a second temperature higher than the first temperature.
    Type: Application
    Filed: March 22, 2023
    Publication date: November 2, 2023
    Applicant: Kokusai Electric Corporation
    Inventors: Takahiro MIYAKURA, Atsushi MORIYA, Yasuhiro MEGAWA, Yasunobu KOSHI, Akito HIRANO
  • Publication number: 20230295837
    Abstract: There is provided a technique that includes: (a) forming a modified layer by modifying at least a portion of an oxide film of a substrate by performing, a predetermined number of times: (a1) supplying a fluorine-containing gas to the substrate including the oxide film; and (a2) supplying a first reducing gas to the substrate; and (b) supplying the fluorine-containing gas to the substrate after the modified layer is formed.
    Type: Application
    Filed: September 15, 2022
    Publication date: September 21, 2023
    Applicant: Kokusai Electric Corporation
    Inventors: Kaichiro MINAMI, Naonori AKAE, Akito HIRANO, Sadayasu SUYAMA, Takayuki YAMAMOTO, Shunsuke ASAKURA, Yugo ORIHASHI, Yasuhiro MEGAWA
  • Publication number: 20220178019
    Abstract: There is provided a technique that includes performing a cycle a predetermined number of times, the cycle including: (a) executing a process recipe of processing a substrate by supplying a process gas to an interior of a process container that accommodates the substrate in a state in which the interior of the process container is heated; and (b) executing a cleaning recipe of cleaning the interior of the process container by supplying a cleaning gas to the interior of the process container that does not accommodate the substrate in the state in which the interior of the process container is heated, wherein a time from an end of (b) in the cycle until a start of (a) in a next cycle is set to be equal to or less than a time from an end of (a) in the cycle until a start of (b) in the cycle.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yugo ORIHASHI, Yasuhiro MEGAWA, Kotaro MURAKAMI, Kensuke HAGA
  • Patent number: 10840094
    Abstract: There is provided a technique that includes: (a) forming a silicon germanium film in an amorphous state so as to embed an inside of a recess formed on a surface of a substrate, by supplying a first silicon-containing gas and a germanium-containing gas to the substrate at a first temperature; (b) raising a temperature of the substrate from the first temperature to a second temperature, which is higher than the first temperature; and (c) forming a silicon film on the silicon germanium film by supplying a second silicon-containing gas to the substrate at the second temperature, wherein in (c), the silicon germanium film as a base of the silicon film is crystallized while the silicon film is formed.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: November 17, 2020
    Assignee: KOKUSAI ELECTRIC CORPORATION
    Inventors: Kiyohiko Maeda, Masato Terasaki, Yasuhiro Megawa, Takahiro Miyakura, Akito Hirano, Takashi Nakagawa
  • Publication number: 20190206679
    Abstract: There is provided a technique that includes: (a) forming a silicon germanium film in an amorphous state so as to embed an inside of a recess formed on a surface of a substrate, by supplying a first silicon-containing gas and a germanium-containing gas to the substrate at a first temperature; (b) raising a temperature of the substrate from the first temperature to a second temperature, which is higher than the first temperature; and (c) forming a silicon film on the silicon germanium film by supplying a second silicon-containing gas to the substrate at the second temperature, wherein in (c), the silicon germanium film as a base of the silicon film is crystallized while the silicon film is formed.
    Type: Application
    Filed: December 27, 2018
    Publication date: July 4, 2019
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Kiyohiko MAEDA, Masato TERASAKI, Yasuhiro MEGAWA, Takahiro MIYAKURA, Akito HIRANO, Takashi NAKAGAWA
  • Patent number: 8901013
    Abstract: An oxygen-containing gas and a hydrogen-containing gas are supplied into a pre-reaction chamber heated to a second temperature and having the pressure set to less than an atmospheric pressure, and a reaction is induced between both gases in the pre-reaction chamber to generate reactive species, and the reactive species are supplied into the process chamber and exhausted therefrom, in which a substrate heated to the first temperature is housed and the pressure is set to less than the atmospheric pressure, and processing is applied to the substrate by the reactive species, with the second temperature set to be not less than the first temperature at this time.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: December 2, 2014
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Masanao Fukuda, Takafumi Sasaki, Yasuhiro Megawa, Masayoshi Minami
  • Publication number: 20130157474
    Abstract: An oxygen-containing gas and a hydrogen-containing gas are supplied into a pre-reaction chamber heated to a second temperature and having the pressure set to less than an atmospheric pressure, and a reaction is induced between both gases in the pre-reaction chamber to generate reactive species, and the reactive species are supplied into the process chamber and exhausted therefrom, in which a substrate heated to the first temperature is housed and the pressure is set to less than the atmospheric pressure, and processing is applied to the substrate by the reactive species, with the second temperature set to be not less than the first temperature at this time.
    Type: Application
    Filed: August 2, 2011
    Publication date: June 20, 2013
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Yuasa, Masanao Fukuda, Takafumi Sasaki, Yasuhiro Megawa, Masayoshi Minami
  • Patent number: 8448599
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: May 28, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Publication number: 20110271907
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Application
    Filed: July 15, 2011
    Publication date: November 10, 2011
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Patent number: 8003411
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: August 23, 2011
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Publication number: 20110065286
    Abstract: At a low temperature of 500° C. to 700° C., the concentration of atomic oxygen is controlled in a wafer stacked direction, and the thickness distribution of oxide films is kept uniform in the wafer stacked direction. A semiconductor device manufacturing method includes a process of oxidizing substrates by supplying oxygen-containing gas and hydrogen-containing gas through a mixing part from an end side of a substrate arrangement region where the substrates are arranged inside the process chamber so that the gases flow toward the other end side of the substrate arrangement region, and supplying hydrogen-containing gas from mid-flow locations corresponding to the substrate arrangement region.
    Type: Application
    Filed: July 22, 2010
    Publication date: March 17, 2011
    Applicant: HITACHI-KOKUSAI ELECTRIC INC.
    Inventors: Takafumi SASAKI, Masanao FUKUDA, Masayoshi MINAMI, Yasuhiro MEGAWA
  • Publication number: 20100192855
    Abstract: An object of this invention is to make it possible to suppress early-stage oxidation of a substrate surface prior to oxidation processing, and to remove a natural oxidation film. For this reason, a method is provided comprising the steps of loading a substrate into a processing chamber, supplying a hydrogen-containing gas and an oxygen-containing gas into the processing chamber, and subjecting a surface of the substrate to oxidation processing, and unloading the substrate subjected to oxidation processing from the processing chamber. In the oxidation processing step, the hydrogen-containing gas is introduced in advance into the processing chamber, with the pressure inside the processing chamber set at a pressure that is less than atmospheric pressure, and the oxygen-containing gas is then introduced in the state in which the introduction of the hydrogen-containing gas is continued.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 5, 2010
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Yuasa, Yasuhiro Megawa
  • Publication number: 20100136714
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Application
    Filed: February 1, 2010
    Publication date: June 3, 2010
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Patent number: 7713883
    Abstract: An object of this invention is to make it possible to suppress early-stage oxidation of a substrate surface prior to oxidation processing, and to remove a natural oxidation film. For this reason, a method is provided comprising the steps of loading a substrate into a processing chamber, supplying a hydrogen-containing gas and an oxygen-containing gas into the processing chamber, and subjecting a surface of the substrate to oxidation processing, and unloading the substrate subjected to oxidation processing from the processing chamber. In the oxidation processing step, the hydrogen-containing gas is introduced in advance into the processing chamber, with the pressure inside the processing chamber set at a pressure that is less than atmospheric pressure, and the oxygen-containing gas is then introduced in the state in which the introduction of the hydrogen-containing gas is continued.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: May 11, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Yasuhiro Megawa
  • Patent number: 7682987
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 23, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Publication number: 20090170337
    Abstract: Provided is a substrate processing apparatus and a method of manufacturing a semiconductor device, which are hard to cause a defect in processing a substrate owing to that a pressure inside a process chamber is not kept constant, and which enable a better processing of a substrate.
    Type: Application
    Filed: June 22, 2007
    Publication date: July 2, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Yuasa, Kazuhiro Kimura, Yasuhiro Megawa
  • Publication number: 20090064765
    Abstract: A method of manufacturing a semiconductor device including the step of: carrying a substrate into a reaction tube; processing the substrate by supplying a gas into the reaction tube from a gas supply line, while exhausting an inside of the reaction tube through the exhaust line by means of an exhaust device and controlling pressure in the reaction tube on the basis of an output from a pressure sensor provided in the exhaust line; carrying the processed substrate out from the reaction tube; and carrying out a leakage check for a gas flowing path including the gas supply line, the reaction tube and the exhaust line, wherein, in the step of carrying out the leakage check, the gas flowing path is divided into plural sections connecting with at least the pressure sensor and the exhaust device, the respective sections are exhausted by means of the exhaust device with an upstream end of each section being closed and pressure in each section is measured by means of the pressure sensor to judge for every section wheth
    Type: Application
    Filed: March 28, 2007
    Publication date: March 12, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Yasuhiro Megawa
  • Publication number: 20080124943
    Abstract: An object of this invention is to make it possible to suppress early-stage oxidation of a substrate surface prior to oxidation processing, and to remove a natural oxidation film. For this reason, a method is provided comprising the steps of loading a substrate into a processing chamber, supplying a hydrogen-containing gas and an oxygen-containing gas into the processing chamber, and subjecting a surface of the substrate to oxidation processing, and unloading the substrate subjected to oxidation processing from the processing chamber. In the oxidation processing step, the hydrogen-containing gas is introduced in advance into the processing chamber, with the pressure inside the processing chamber set at a pressure that is less than atmospheric pressure, and the oxygen-containing gas is then introduced in the state in which the introduction of the hydrogen-containing gas is continued.
    Type: Application
    Filed: March 8, 2006
    Publication date: May 29, 2008
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhiro Yuasa, Yasuhiro Megawa