Patents by Inventor Taketoshi TOMIOKA

Taketoshi TOMIOKA 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).

  • Patent number: 11521886
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: December 6, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Taketoshi Tomioka, Hiroki Kishi, Jisoo Suh
  • Publication number: 20210327741
    Abstract: A substrate support is provided that includes: a base; an electrostatic chuck on which a substrate is placed; an electrode provided in the electrostatic chuck; a contact portion of the electrode; an adhesive layer that bonds the electrostatic chuck with the base and that does not cover the contact portion; and a power supply terminal contacting the contact portion of the electrode without being fixed to the contact portion.
    Type: Application
    Filed: September 3, 2019
    Publication date: October 21, 2021
    Inventors: Akira NAGAYAMA, Yasuharu SASAKI, Taketoshi TOMIOKA, Shin YAMAGUCHI
  • Publication number: 20210319987
    Abstract: An edge ring to be disposed to encircle a substrate is provided. The edge ring includes a bottom used to define vertical heights that are from points on the circumference of a virtual circle, to the bottom of the edge ring, the virtual circle having a radius from a first point that is placed on a central axis of the edge ring, the first point being defined as the center of the virtual circle, the radius being half of a diameter ranging from an inner diameter to an outer diameter of the edge ring, and an absolute value indicative of a difference between a maximum value and a minimum value for the vertical heights being set to be less than or equal to a preset upper limit.
    Type: Application
    Filed: April 1, 2021
    Publication date: October 14, 2021
    Inventors: Ryo CHIBA, Akira NAGAYAMA, Yasuharu SASAKI, Daiki SATOH, Taketoshi TOMIOKA
  • Publication number: 20210316416
    Abstract: A focus ring is disposed on a peripheral portion of a lower electrode that receives a substrate thereon in a process container so as to contact a member of the lower electrode. The focus ring includes a contact surface that contacts the member of the lower electrode and is made of any one of a silicon-containing material, alumina and quartz. At least one of the contact surface of the focus ring and a contact surface of the member of the lower electrode has surface roughness of 0.1 micrometers or more.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 14, 2021
    Inventors: Taketoshi TOMIOKA, Yasuharu SASAKI, Hiroki KISHI, Jisoo SUH
  • Publication number: 20210005495
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Application
    Filed: September 22, 2020
    Publication date: January 7, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu SASAKI, Taketoshi TOMIOKA, Hiroki KISHI, Jisoo SUH
  • Patent number: 10825709
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: November 3, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Taketoshi Tomioka, Hiroki Kishi, Jisoo Suh
  • Patent number: 10714370
    Abstract: A mounting table includes a base and an electrostatic chuck provided on the base. The base has first and second top surface on which the electrostatic chuck and a focus ring are respectively provided. The second top surface is provided below the first top surface. A coolant path in the base has central and peripheral paths extending below the first and second top surfaces, respectively. The peripheral path has a portion extending along a side surface toward the first top surface. The mounting surface has central and peripheral regions. The mounting surface has protrusions formed in a dot shape. The protrusions are formed such that a contact area between the protrusions of the peripheral region and the backside of an object per unit area becomes greater than a contact area between the protrusions of the central region and the backside of the object per unit area.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: July 14, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Taketoshi Tomioka, Taku Gohira, Toshiyuki Makabe
  • Publication number: 20190221464
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Application
    Filed: March 22, 2019
    Publication date: July 18, 2019
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu SASAKI, Taketoshi TOMIOKA, Hiroki KISHI, Jisoo SUH
  • Patent number: 10269607
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: April 23, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu Sasaki, Taketoshi Tomioka, Hiroki Kishi, Jisoo Suh
  • Publication number: 20180182635
    Abstract: A focus ring that surrounds a periphery of a substrate placed on a stage in a processing chamber of a substrate processing apparatus includes a lower surface to contact a peripheral portion of the stage, the lower surface being inclined such that an outer peripheral side becomes lower than an inner peripheral side in a radial direction.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 28, 2018
    Inventors: Toshiya Tsukahara, Junji Ishibashi, Taketoshi Tomioka, Yasuharu Sasaki, Yohei Uchida
  • Publication number: 20170066103
    Abstract: A focus ring is disposed on a peripheral portion of a lower electrode that receives a substrate thereon in a process container so as to contact a member of the lower electrode. The focus ring includes a contact surface that contacts the member of the lower electrode and is made of any one of a silicon-containing material, alumina and quartz. At least one of the contact surface of the focus ring and a contact surface of the member of the lower electrode has surface roughness of 0.1 micrometers or more.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 9, 2017
    Inventors: Taketoshi TOMIOKA, Yasuharu SASAKI, Hiroki KISHI, Jisoo SUH
  • Publication number: 20160189994
    Abstract: An electrostatic chucking method uses a substrate processing apparatus including an electrostatic chuck, a focus ring, a supply unit configured to supply a heat transfer medium to a space formed between the focus ring and the electrostatic chuck, and a plurality of electrodes provided at a region in the electrostatic chuck which corresponds to the focus ring. The electrostatic chucking method includes supplying by the supply unit the heat transfer medium to the space for a plasma processing period for which a plasma for processing the substrate is generated, and applying different voltages to the plurality of electrodes to attract and hold the focus ring on the electrostatic chuck for a period other than the plasma processing period.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 30, 2016
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuharu SASAKI, Taketoshi TOMIOKA, Hiroki KISHI, Jisoo SUH
  • Publication number: 20140238609
    Abstract: A mounting table includes a base and an electrostatic chuck provided on the base. The base has first and second top surface on which the electrostatic chuck and a focus ring are respectively provided. The second top surface is provided below the first top surface. A coolant path in the base has central and peripheral paths extending below the first and second top surfaces, respectively. The peripheral path has a portion extending along a side surface toward the first top surface. The mounting surface has central and peripheral regions. The mounting surface has protrusions formed in a dot shape. The protrusions are formed such that a contact area between the protrusions of the peripheral region and the backside of an object per unit area becomes greater than a contact area between the protrusions of the central region and the backside of the object per unit area.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Taketoshi TOMIOKA, Taku GOHIRA, Toshiyuki MAKABE