Patents by Inventor Tadashi Aoto

Tadashi Aoto 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: 20200243372
    Abstract: A susceptor includes a base; a substrate placing member provided on the base; a bonding layer configured to bond the base and the substrate placing member; and a protection member disposed in a space which an outer peripheral surface of the bonding layer faces and allowed to deactivate a radical while having gas permeability.
    Type: Application
    Filed: January 22, 2020
    Publication date: July 30, 2020
    Inventor: Tadashi Aoto
  • Patent number: 10153138
    Abstract: Disclosed is a plasma etching apparatus which includes: a base formed of a metal that has a lower expansion coefficient than aluminum; an electrostatic chuck disposed on a mounting surface of the base and configured to mount an object to be processed; a bonding layer which bonds the base to the electrostatic chuck; and a heater provided within the electrostatic chuck. In the plasma etching apparatus, the base is provided with a metal portion that is formed through a cold spraying by using a metal that has a higher thermal conductivity than the metal for forming the base.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: December 11, 2018
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Tadashi Aoto, Daisuke Hayashi
  • Patent number: 9589823
    Abstract: A mounting table includes an electrostatic chuck, a base, and a cylindrical sleeve. The electrostatic chuck has a top surface to be exposed to plasma and a bottom surface opposite to the top surface, and a first through-hole is formed through the electrostatic chuck. The base is bonded to the bottom surface of the electrostatic chuck by a first adhesive, and a second through-hole is formed through the base. The second through-hole communicates with the first through-hole and has a diameter larger than a diameter of the first through-hole. The sleeve is bonded to the bottom surface of the electrostatic chuck by a second adhesive while communicating with the first through-hole.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 7, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Takeshi Sugamata, Tadashi Aoto
  • Patent number: 9412635
    Abstract: An electrostatic chuck device includes an electrostatic chuck part that has an upper surface as a placement surface for placing a plate-shaped sample and has an internal electrode for electrostatic attraction built therein; and a cooling base part that cools the electrostatic chuck part. The electrostatic chuck part and the cooling base part are integrally adhered to each other via an adhesive layer. An insulator having a double pipe structure including an insulator and an insulator provided coaxially with an outer peripheral portion of the insulator is provided in a cooling gas hole, formed in the electrostatic chuck part and the cooling base part, so as to cover an exposed surface of the adhesive layer on the cooling gas hole side.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: August 9, 2016
    Assignees: Tokyo Electron Limited, Sumitomo Osaka Cement Co., Ltd.
    Inventors: Yasuharu Sasaki, Kaoru Oohashi, Tomoyuki Takahashi, Tadashi Aoto, Mamoru Kosakai, Shinichi Maeta, Yukio Miura, Takashi Sato, Kei Furuuchi
  • Patent number: 9214376
    Abstract: A substrate mounting stage that prevents poor attraction of substrates so as to improve the operating rate of a substrate processing apparatus. The substrate mounting stage is disposed in the substrate processing apparatus and has a substrate mounting surface on which a substrate is mounted. The arithmetic average roughness (Ra) of the substrate mounting surface is not less than a first predetermined value, and the initial wear height (Rpk) of the substrate mounting surface is not more than a second predetermined value.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: December 15, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masakazu Higuma, Yasuharu Sasaki, Tadashi Aoto, Eiichiro Kikuchi
  • Publication number: 20140376148
    Abstract: An electrostatic chuck device includes an electrostatic chuck part that has an upper surface as a placement surface for placing a plate-shaped sample and has an internal electrode for electrostatic attraction built therein; and a cooling base part that cools the electrostatic chuck part. The electrostatic chuck part and the cooling base part are integrally adhered to each other via an adhesive layer. An insulator having a double pipe structure including an insulator and an insulator provided coaxially with an outer peripheral portion of the insulator is provided in a cooling gas hole, formed in the electrostatic chuck part and the cooling base part, so as to cover an exposed surface of the adhesive layer on the cooling gas hole side.
    Type: Application
    Filed: February 6, 2013
    Publication date: December 25, 2014
    Inventors: Yasuharu Sasaki, Kaoru Oohashi, Tomoyuki Takahashi, Tadashi Aoto, Mamoru Kosakai, Shinichi Maeta, Yukio Miura, Takashi Sato, Kei Furuuchi
  • Publication number: 20140346152
    Abstract: A mounting table includes an electrostatic chuck, a base, and a cylindrical sleeve. The electrostatic chuck has a top surface to be exposed to plasma and a bottom surface opposite to the top surface, and a first through-hole is formed through the electrostatic chuck. The base is bonded to the bottom surface of the electrostatic chuck by a first adhesive, and a second through-hole is formed through the base. The second through-hole communicates with the first through-hole and has a diameter larger than a diameter of the first through-hole. The sleeve is bonded to the bottom surface of the electrostatic chuck by a second adhesive while communicating with the first through-hole.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 27, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Takeshi Sugamata, Tadashi Aoto
  • Publication number: 20140069585
    Abstract: Disclosed is a plasma etching apparatus which includes: a base formed of a metal that has a lower expansion coefficient than aluminum; an electrostatic chuck disposed on a mounting surface of the base and configured to mount an object to be processed; a bonding layer which bonds the base to the electrostatic chuck; and a heater provided within the electrostatic chuck. In the plasma etching apparatus, the base is provided with a metal portion that is formed through a cold spraying by using a metal that has a higher thermal conductivity than the metal for forming the base.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 13, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tadashi AOTO, Daisuke HAYASHI
  • Patent number: 8343372
    Abstract: A surface processing method for a mounting stage, which enables a mounting surface conforming to a substrate to be formed while saving time and effort. The substrate is mounted on a mounting surface of the mounting stage disposed in a housing chamber of a substrate processing apparatus that carries out plasma processing on the substrate. The mounted substrate is thermally expanded.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 1, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Tadashi Aoto, Eiichiro Kikuchi, Masakazu Higuma, Kimihiro Higuchi
  • Patent number: 7815492
    Abstract: A surface treatment method that enables a surface of an electrostatic chuck to be smoothed, so as to improve the efficiency of heat transfer between the surface of the electrostatic chuck and a substrate. The electrostatic chuck is provided in an upper portion of a susceptor provided in a chamber of a substrate processing apparatus. In the surface treatment of the electrostatic chuck, a sprayed coating film is formed on the surface of the electrostatic chuck, next the surface of the electrostatic chuck is ground by bringing into contact therewith a grindstone, then the surface of the electrostatic chuck is ground flat by bringing into contact therewith a lapping plate onto a surface of which is sprayed a suspension, and then the surface of the electrostatic chuck is ground smooth by bringing into contact therewith a tape of a tape lapping apparatus.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: October 19, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Yasuharu Sasaki, Masakazu Higuma, Tadashi Aoto, Eiichiro Kikuchi
  • Patent number: 7481903
    Abstract: A processing device in which maintenance can be easily carried out and a burden on a worker can be reduced, and a method of maintaining the device are provided. An upper electrode unit 106 structuring a ceiling portion of a processing chamber 102 of an etching device 100 is structured from a lower assembly 128 at a processing chamber 102 side including an upper electrode 130, and an upper assembly 128 at a power supply side including an electro-body 144. A lock mechanism 156 is released, and after the upper assembly 126 is independently raised and removed by a lift mechanism 164, maintenance of the upper assembly 126 and/or the lower assembly 128 is carried out. The lock mechanism 156 is locked, and after the upper and lower assemblies 126, 128 are integrally raised and removed by the lift mechanism 164, maintenance of an interior of the processing chamber 102 is carried out.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: January 27, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Shigeru Senzaki, Toshiki Sasaki, Tadashi Aoto, Nobuyuki Nagayama, Kouji Mitsuhashi
  • Publication number: 20080280536
    Abstract: A surface treatment method that enables a surface of an electrostatic chuck to be smoothed, so as to improve the efficiency of heat transfer between the surface of the electrostatic chuck and a substrate. The electrostatic chuck is provided in an upper portion of a susceptor provided in a chamber of a substrate processing apparatus. In the surface treatment of the electrostatic chuck, a sprayed coating film is formed on the surface of the electrostatic chuck, next the surface of the electrostatic chuck is ground by bringing into contact therewith a grindstone, then the surface of the electrostatic chuck is ground flat by bringing into contact therewith a lapping plate onto a surface of which is sprayed a suspension, and then the surface of the electrostatic chuck is ground smooth by bringing into contact therewith a tape of a tape lapping apparatus.
    Type: Application
    Filed: March 19, 2007
    Publication date: November 13, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Masakazu Higuma, Tadashi Aoto, Eiichiro Kikuchi
  • Publication number: 20080237030
    Abstract: A surface processing method for a mounting stage, which enables a mounting surface conforming to a substrate to be formed while saving time and effort. The substrate is mounted on a mounting surface of the mounting stage disposed in a housing chamber of a substrate processing apparatus that carries out plasma processing on the substrate. The mounted substrate is thermally expanded.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tadashi Aoto, Eiichiro Kikuchi, Masakazu Higuma, Kimihiro Higuchi
  • Publication number: 20080217291
    Abstract: A substrate mounting stage that prevents poor attraction of substrates so as to improve the operating rate of a substrate processing apparatus. The substrate mounting stage is disposed in the substrate processing apparatus and has a substrate mounting surface on which a substrate is mounted. The arithmetic average roughness (Ra) of the substrate mounting surface is not less than a first predetermined value, and the initial wear height (Rpk) of the substrate mounting surface is not more than a second predetermined value.
    Type: Application
    Filed: February 11, 2008
    Publication date: September 11, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masakazu HIGUMA, Yasuharu Sasaki, Tadashi Aoto, Eiichiro Kikuchi
  • Publication number: 20050150456
    Abstract: A processing device in which maintenance can be easily carried out and a burden on a worker can be reduced, and a method of maintaining the device are provided. An upper electrode unit 106 structuring a ceiling portion of a processing chamber 102 of an etching device 100 is structured from a lower assembly 128 at a processing chamber 102 side including an upper electrode 130, and an upper assembly 128 at a power supply side including an electro-body 144. A lock mechanism 156 is released, and after the upper assembly 126 is independently raised and removed by a lift mechanism 164, maintenance of the upper assembly 126 and/or the lower assembly 128 is carried out. The lock mechanism 156 is locked, and after the upper and lower assemblies 126, 128 are integrally raised and removed by the lift mechanism 164, maintenance of an interior of the processing chamber 102 is carried out.
    Type: Application
    Filed: March 1, 2005
    Publication date: July 14, 2005
    Inventors: Shigeru Senzaki, Toshiki Sasaki, Tadashi Aoto, Nobuyuki Nagayama, Kouji Mitsuhashi
  • Patent number: 6899786
    Abstract: A processing device in which maintenance can be easily carried out and a burden on a worker can be reduced, and a method of maintaining the device are provided. An upper electrode unit 106 structuring a ceiling portion of a processing chamber 102 of an etching device 100 is structured from a lower assembly 128 at a processing chamber 102 side including an upper electrode 130, and an upper assembly 126 at a power supply side including an electro-body 144. A lock mechanism 156 is released, and after the upper assembly 126 is independently raised and removed by a lift mechanism 164, maintenance of the upper assembly 126 and/or the lower assembly 128 is carried out. The lock mechanism 156 is locked, and after the upper and lower assemblies 126, 128 are integrally raised and removed by the lift mechanism 164, maintenance of an interior of the processing chamber 102 is carried out.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: May 31, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Shigeru Senzaki, Toshiki Sasaki, Tadashi Aoto, Nobuyuki Nagayama, Kouji Mitsuhashi
  • Publication number: 20040108068
    Abstract: A processing device in which maintenance can be easily carried out and a burden on a worker can be reduced, and a method of maintaining the device are provided. An upper electrode unit 106 structuring a ceiling portion of a processing chamber 102 of an etching device 100 is structured from a lower assembly 128 at a processing chamber 102 side including an upper electrode 130, and an upper assembly 128 at a power supply side including an electro-body 144. A lock mechanism 156 is released, and after the upper assembly 126 is independently raised and removed by a lift mechanism 164, maintenance of the upper assembly 126 and/or the lower assembly 128 is carried out. The lock mechanism 156 is locked, and after the upper and lower assemblies 126, 128 are integrally raised and removed by the lift mechanism 164, maintenance of an interior of the processing chamber 102 is carried out.
    Type: Application
    Filed: November 18, 2002
    Publication date: June 10, 2004
    Inventors: Shigeru Senzaki, Toshiki Sasaki, Tadashi Aoto, Nobuyuki Nagayama, Kouji Mitsuhashi