Patents by Inventor Ryuichi Asako

Ryuichi Asako 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: 20240087916
    Abstract: A vacuum processing apparatus includes a decompressable process container; a supply port configured to supply, to the process container, an ionic liquid that absorbs an oxidizing gas; and a discharge port configured to discharge the ionic liquid supplied to the process container. A recess is provided at a joint portion between members constituting the process container. The supply port is configured to supply the ionic liquid to the recess, and the discharge port is configured to discharge the ionic liquid supplied to the recess.
    Type: Application
    Filed: November 1, 2023
    Publication date: March 14, 2024
    Inventors: Hirokazu UEDA, Yoji IIZUKA, Mitsuaki IWASHITA, Antonio ROTONDARO, Dipak ARYAL, Takeo NAKANO, Ryuichi ASAKO, Kenji SEKIGUCHI, Koji AKIYAMA, Naoki UMESHITA, Takashi HAYAKAWA
  • Patent number: 11842900
    Abstract: A disclosed etching method includes (a) etching a titanium nitride film with a first plasma, and (b) etching the titanium nitride film with a second plasma. The first plasma is generated from a first processing gas, and the second plasma is generated from a second processing gas. One of the first processing gas and the second processing gas contains a chlorine-containing gas and a fluorocarbon gas, and the other of the first processing gas and the second processing gas contains a chlorine-containing gas and does not contain a fluorocarbon gas. A repetition of a cycle including the operations (a) and (b) is performed. The repetition of the cycle is stopped in a state where the titanium nitride film is partially etched in a film thickness direction thereof.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: December 12, 2023
    Assignee: Tokyo Electron Limited
    Inventor: Ryuichi Asako
  • Publication number: 20230230855
    Abstract: A substrate processing method includes: preparing a substrate having a metal film exposed on a surface of the substrate; and forming a film of an ionic self-association material on a surface of the metal film by supplying the ionic self-association material to the surface of the substrate, the ionic self-association material having fluidity with a hydrophilic group and a hydrophobic group.
    Type: Application
    Filed: January 12, 2023
    Publication date: July 20, 2023
    Inventors: Takeo NAKANO, Hirokazu UEDA, Mitsuaki IWASHITA, Ryuichi ASAKO, Naoki UMESHITA
  • Publication number: 20230226571
    Abstract: A substrate processing method includes forming a film of an ionic liquid on a surface of a substrate, on which a pattern is formed, by supplying the ionic liquid to the surface of the substrate, wherein the ionic liquid has a cation containing a hydrocarbon chain having six or more carbon atoms, and wherein at least one hydrogen atom in the hydrocarbon chain is substituted with a fluorine atom.
    Type: Application
    Filed: January 12, 2023
    Publication date: July 20, 2023
    Inventors: Takeo NAKANO, Hirokazu UEDA, Mitsuaki IWASHITA, Naoki UMESHITA, Ryuichi ASAKO, Kenichi UKI
  • Publication number: 20230111710
    Abstract: A purification processing apparatus for supplying purified isopropyl alcohol to a substrate processing apparatus. The purification processing apparatus includes: a processing chamber in which unpurified isopropyl alcohol and ionic liquid are mixed, and the isopropyl alcohol and the ionic liquid are separated to purify the isopropyl alcohol; an unpurified solvent supply port configured to supply the unpurified isopropyl alcohol to the processing chamber; an ionic liquid supply port configured to supply the ionic liquid to the processing chamber; and a purified solvent outlet configured to supply the purified isopropyl alcohol from the processing chamber to the substrate processing apparatus.
    Type: Application
    Filed: October 5, 2022
    Publication date: April 13, 2023
    Inventors: Takeya INOUE, Kenji SEKIGUCHI, Mitsuaki IWASHITA, Hirokazu UEDA, Koji AKIYAMA, Ryuichi ASAKO
  • Publication number: 20230019943
    Abstract: A pattern formation method includes: forming a photosensitive hard mask made of a transition metal oxide film on a surface of a substrate; exposing the photosensitive hard mask to EUV light in a desired pattern; causing a state change in an exposed region by heat generated during exposure; and selectively removing either a region where the state change has occurred or a region where the state change has not occurred.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 19, 2023
    Inventors: Hajime NAKABAYASHI, Tomohito YAMAJI, Kazuki YAMADA, Ryuichi ASAKO
  • Publication number: 20230010069
    Abstract: A method of processing a substrate is provided. The substrate includes an etching target region and a patterned region. The patterned region is provided on the etching target region. In the method, an organic film is formed on a surface of the substrate. Subsequently, the etching target region is etched by plasma generated from a processing gas. The organic film is formed in a state that the substrate is placed in a processing space within a chamber. When the organic film is formed, a first gas containing a first organic compound is supplied toward the substrate, and then, a second gas containing a second organic compound is supplied toward the substrate. An organic compound constituting the organic film is generated by polymerization of the first organic compound and the second organic compound.
    Type: Application
    Filed: August 18, 2022
    Publication date: January 12, 2023
    Inventors: Masahiro Tabata, Toru Hisamatsu, Sho Kumakura, Ryuichi Asako, Shinya Ishikawa, Masanobu Honda
  • Publication number: 20230010867
    Abstract: A substrate processing method including: a) providing a substrate having a first region on a surface; b) supplying a precursor to the surface of the substrate, the precursor including at least both a halogen and carbon and being configured to form a first chemical bond in the first region; and c) exposing the surface of the substrate to a plasma of an inert gas.
    Type: Application
    Filed: November 30, 2020
    Publication date: January 12, 2023
    Inventor: Ryuichi ASAKO
  • Patent number: 11538693
    Abstract: A substrate processing method is provided. In the method, a substrate is provided. A monomer that is chemically bonded to the substrate is supplied onto the substrate. An initiator for polymerizing the monomer is supplied to the substrate having the supplied monomer thereon, thereby forming a polymer film.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: December 27, 2022
    Assignee: Tokyo Electron Limited
    Inventor: Ryuichi Asako
  • Publication number: 20220403509
    Abstract: According to one aspect of the present disclosure, a vacuum processing apparatus includes: a decompressable process container; a supply port that is formed on a side wall of the process container and that is configured to supply, to the process container, an ionic liquid that absorbs an oxidizing gas; and a discharge port configured to discharge the ionic liquid supplied to the process container.
    Type: Application
    Filed: June 17, 2021
    Publication date: December 22, 2022
    Inventors: Hirokazu UEDA, Yoji IIZUKA, Mitsuaki IWASHITA, Antonio ROTONDARO, Dipak ARYAL, Takeo NAKANO, Ryuichi ASAKO, Kenji SEKIGUCHI, Koji AKIYAMA, Naoki UMESHITA, Takashi HAYAKAWA
  • Patent number: 11488836
    Abstract: A method of processing a substrate is provided. The substrate includes an etching target region and a patterned region. The patterned region is provided on the etching target region. In the method, an organic film is formed on a surface of the substrate. Subsequently, the etching target region is etched by plasma generated from a processing gas. The organic film is formed in a state that the substrate is placed in a processing space within a chamber. When the organic film is formed, a first gas containing a first organic compound is supplied toward the substrate, and then, a second gas containing a second organic compound is supplied toward the substrate. An organic compound constituting the organic film is generated by polymerization of the first organic compound and the second organic compound.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: November 1, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masahiro Tabata, Toru Hisamatsu, Sho Kumakura, Ryuichi Asako, Shinya Ishikawa, Masanobu Honda
  • Patent number: 11456184
    Abstract: A method is provided. In the method, a substrate having a first region and a second region on a substrate surface is provided. A film deposition material to form a first chemical bond in the first region and a second chemical bond in the second region is supplied to the substrate surface. The second bond has a second bond energy lower than a first bond energy of the first chemical bond. A film is selectively formed in the first region by supplying an energy lower than the first bond energy of the first chemical bond and higher than the second bond energy of the second chemical bond.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: September 27, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Ryuichi Asako, Tatsuya Yamaguchi
  • Publication number: 20210366724
    Abstract: A disclosed etching method includes (a) etching a titanium nitride film with a first plasma, and (b) etching the titanium nitride film with a second plasma. The first plasma is generated from a first processing gas, and the second plasma is generated from a second processing gas. One of the first processing gas and the second processing gas contains a chlorine-containing gas and a fluorocarbon gas, and the other of the first processing gas and the second processing gas contains a chlorine-containing gas and does not contain a fluorocarbon gas. A repetition of a cycle including the operations (a) and (b) is performed. The repetition of the cycle is stopped in a state where the titanium nitride film is partially etched in a film thickness direction thereof.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 25, 2021
    Applicant: Tokyo Electron Limited
    Inventor: Ryuichi ASAKO
  • Publication number: 20210125837
    Abstract: A method is provided. In the method, a substrate having a first region and a second region on a substrate surface is provided. A film deposition material to form a first chemical bond in the first region and a second chemical bond in the second region is supplied to the substrate surface. The second bond has a second bond energy lower than a first bond energy of the first chemical bond. A film is selectively formed in the first region by supplying an energy lower than the first bond energy of the first chemical bond and higher than the second bond energy of the second chemical bond.
    Type: Application
    Filed: October 23, 2020
    Publication date: April 29, 2021
    Inventors: Ryuichi ASAKO, Tatsuya YAMAGUCHI
  • Patent number: 10923332
    Abstract: A plasma processing method is performed in a state where a focus ring is disposed on a supporting table to surround an edge of a substrate by a plasma processing apparatus. The plasma processing apparatus includes a chamber and the supporting table provided in the chamber and configured to support the substrate mounted thereon. The plasma processing method includes forming an organic film on the focus ring to reduce a difference between a position of an upper surface of the focus ring in a vertical direction and a reference position, and performing plasma processing on the substrate after the formation of the organic film.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: February 16, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Ryuichi Asako, Masahiro Tabata, Takao Funakubo
  • Patent number: 10903085
    Abstract: There is provided a method for etching an organic region of a substrate. In the method, an organic film is formed on a surface in a chamber of a plasma processing apparatus. The surface extends out around a region where the substrate is to be disposed in the chamber of the plasma processing apparatus, and the organic region is etched by chemical species from plasma in the chamber.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 26, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Ryuichi Asako, Masahiro Tabata, Takao Funakubo
  • Publication number: 20200381265
    Abstract: A method of processing a substrate is provided. The substrate includes an etching target region and a patterned region. The patterned region is provided on the etching target region. In the method, an organic film is formed on a surface of the substrate. Subsequently, the etching target region is etched by plasma generated from a processing gas. The organic film is formed in a state that the substrate is placed in a processing space within a chamber. When the organic film is formed, a first gas containing a first organic compound is supplied toward the substrate, and then, a second gas containing a second organic compound is supplied toward the substrate. An organic compound constituting the organic film is generated by polymerization of the first organic compound and the second organic compound.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 3, 2020
    Inventors: Masahiro Tabata, Toru Hisamatsu, Sho Kumakura, Ryuichi Asako, Shinya Ishikawa, Masanobu Honda
  • Publication number: 20200312672
    Abstract: A composition for film deposition that includes a first component and a second component, wherein the second component polymerizes with the first component to form a nitrogen-containing carbonyl compound, and wherein desorption energy of at least one of the first component and the second component is two or more times greater than formation energy of the nitrogen-containing carbonyl compound, is provided.
    Type: Application
    Filed: May 24, 2019
    Publication date: October 1, 2020
    Inventors: Tatsuya YAMAGUCHI, Ryuichi ASAKO
  • Patent number: 10777425
    Abstract: A method of processing a substrate is provided. The substrate includes an etching target region and a patterned region. The patterned region is provided on the etching target region. In the method, an organic film is formed on a surface of the substrate. Subsequently, the etching target region is etched by plasma generated from a processing gas. The organic film is formed in a state that the substrate is placed in a processing space within a chamber. When the organic film is formed, a first gas containing a first organic compound is supplied toward the substrate, and then, a second gas containing a second organic compound is supplied toward the substrate. An organic compound constituting the organic film is generated by polymerization of the first organic compound and the second organic compound.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 15, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masahiro Tabata, Toru Hisamatsu, Sho Kumakura, Ryuichi Asako, Shinya Ishikawa, Masanobu Honda
  • Publication number: 20200277512
    Abstract: A composition for film deposition that includes a first component and a second component, wherein the second component polymerizes with the first component to form a nitrogen-containing carbonyl compound, and wherein a molecular structure of the first component and a molecular structure of the second component are asymmetric with each other, is provided.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 3, 2020
    Inventors: Tatsuya YAMAGUCHI, Ryuichi ASAKO