Patents by Inventor Toshiaki Fujisato

Toshiaki Fujisato 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: 11466365
    Abstract: There is provided a film-forming apparatus including: a processing container, wherein a reaction gas is supplied into the processing container; a stage disposed inside the processing container and provided with a substrate heating part, the stage being configured to place a substrate thereon; a support member configured to support the stage from a rear surface of the stage, wherein the rear surface faces a placement surface on which the substrate is placed; a temperature control member disposed on the rear surface of the stage and including a hollow portion formed to cover the support member, the temperature control member configured to have a controllable temperature; a heat-insulating member disposed between the stage and the temperature control member; and a purge gas supply part configured to supply a purge gas to a first gap formed between the support member and the temperature control member.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 11, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Daisuke Toriya, Toshiaki Fujisato, Yuichi Furuya
  • Patent number: 11441224
    Abstract: A method of controlling a substrate processing apparatus that includes a stage, an annular member, a gas introduction mechanism, an exhaust part and a heat transfer gas introduction supply/exhaust part, the method including: mounting a substrate on the stage, and mounting the annular member on the substrate to press the substrate; creating a pressure of a heat transfer gas to be supplied into a space formed between a rear surface of the substrate and a front surface of the stage using the heat transfer gas supply/exhaust part; supplying the heat transfer gas into the space from the heat transfer gas supply/exhaust part; introducing the gas from the gas introduction mechanism into a container; exhausting the heat transfer gas from the space through an orifice; subsequently, exhausting the heat transfer gas from the space; and removing the annular member from the substrate.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: September 13, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Daisuke Toriya, Yuichi Furuya, Toshiaki Fujisato
  • Patent number: 11396704
    Abstract: A substrate holder according to one embodiment of the present disclosure comprises a stage made of a dielectric material and configured to support a substrate; an attraction electrode provided in the stage and configured to electrostatically attract the substrate; and a heater configured to heat the stage. By applying a DC voltage to the attraction electrode, the substrate is electrostatically attached to a surface of the stage by a Johnsen-Rahbek force. The stage comprises an annular close contact area with which the substrate comes into close contact at a position corresponding to an outer periphery of the substrate on the surface of the stage; and a groove provided in an annular shape in a portion outside the close contact area, and a conductive deposition film formed by the raw material gas is accumulated in the groove.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: July 26, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Toshiaki Fujisato, Takashi Mochizuki, Daisuke Toriya, Kouki Suzuki, Hwajun Noh
  • Patent number: 11280002
    Abstract: A placement apparatus is provided in the present disclosure. The apparatus includes a stage on which a substrate is placed; a support configured to support the stage from a side of a rear surface of the stage that is opposite to a placement surface on which the substrate is placed; a temperature adjustment member including a plate securing the stage from a lower surface of the stage, a shaft extending downwards from the plate, and a hole accommodating the support through the shaft from the plate, and being capable of a temperature adjustment; a heat-insulating member disposed between the stage and the temperature adjustment member; and an abutment member configured to abut the substrate placed on the stage.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: March 22, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kohichi Satoh, Toshiaki Fujisato, Daisuke Toriya
  • Patent number: 11104991
    Abstract: There is provided a processing apparatus including a stage disposed inside a chamber, and a cover member provided in an outer edge portion of the stage and configured to partition an interior of the chamber into a processing space above the stage and a bottom space below the stage. The cover member includes a first protrusion portion configured to make surface-to-surface contact with a surface of the stage, a second protrusion portion spaced apart from the first protrusion portion and configured to make surface-to-surface contact with the surface of the stage, and an exhaust path provided between the first protrusion portion and the second protrusion portion and configured to exhaust a gas from a buffer space formed by the cover member and the stage.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: August 31, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Takashi Kamio, Toshiaki Fujisato
  • Patent number: 10998204
    Abstract: There is provided a method of processing a substrate by a substrate processing apparatus including a substrate mounting table having a refrigerant passage and a heater, and a chiller. The method includes adjusting a temperature of the substrate mounting table to a first temperature to process the substrate; and adjusting the temperature of the substrate mounting table to a second temperature higher than the first temperature to process the substrate. The temperature of the substrate mounting table becomes the second temperature by allowing the refrigerant at a first flow rate to flow from the chiller to the refrigerant passage and operating the heater. The temperature of the substrate mounting table becomes the first temperature by allowing the refrigerant at a second flow rate larger than the first flow rate to flow from the chiller to the refrigerant passage and operating the heater, or stopping an operation of the heater.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: May 4, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Takashi Mochizuki, Toshiaki Fujisato
  • Publication number: 20210005493
    Abstract: When performing processing on a substrate in a plasma-free atmosphere, the substrate is reliably attracted to perform processing with high uniformity in the plane of the substrate. An apparatus includes a DC power source and a processing gas supply part. The DC power source has a positive electrode connected to one of an electrode of an electrostatic chuck and a conductive member, and a negative electrode connected to the other of the electrode and the conductive member, and attracts the substrate to a dielectric layer of the electrostatic chuck by electrostatic attraction force generated by applying voltage between the conductive member located at a processing position and the electrode in a state in which plasma is not formed inside a processing container. The processing gas supply part performs processing by supplying a processing gas to the substrate in a state in which the substrate is attracted to the dielectric layer.
    Type: Application
    Filed: October 12, 2018
    Publication date: January 7, 2021
    Inventors: Toshiaki FUJISATO, Tadahiro ISHIZAKA, Takashi MOCHIZUKI, Daisuke TORIYA
  • Publication number: 20200248306
    Abstract: A method of controlling a substrate processing apparatus that includes a stage, an annular member, a gas introduction mechanism, an exhaust part and a heat transfer gas introduction supply/exhaust part, the method including: mounting a substrate on the stage, and mounting the annular member on the substrate to press the substrate; creating a pressure of a heat transfer gas to be supplied into a space formed between a rear surface of the substrate and a front surface of the stage using the heat transfer gas supply/exhaust part; supplying the heat transfer gas into the space from the heat transfer gas supply/exhaust part; introducing the gas from the gas introduction mechanism into a container; exhausting the heat transfer gas from the space through an orifice; subsequently, exhausting the heat transfer gas from the space; and removing the annular member from the substrate.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 6, 2020
    Inventors: Daisuke TORIYA, Yuichi FURUYA, Toshiaki FUJISATO
  • Publication number: 20200165723
    Abstract: A substrate holder according to one embodiment of the present disclosure comprises a stage made of a dielectric material and configured to support a substrate; an attraction electrode provided in the stage and configured to electrostatically attract the substrate; and a heater configured to heat the stage. By applying a DC voltage to the attraction electrode, the substrate is electrostatically attached to a surface of the stage by a Johnsen-Rahbek force. The stage comprises an annular close contact area with which the substrate comes into close contact at a position corresponding to an outer periphery of the substrate on the surface of the stage; and a groove provided in an annular shape in a portion outside the close contact area, and a conductive deposition film formed by the raw material gas is accumulated in the groove.
    Type: Application
    Filed: November 27, 2019
    Publication date: May 28, 2020
    Inventors: Toshiaki FUJISATO, Takashi MOCHIZUKI, Daisuke TORIYA, Kouki SUZUKI, Hwajun NOH
  • Publication number: 20200095680
    Abstract: A placement apparatus is provided in the present disclosure. The apparatus includes a stage on which a substrate is placed; a support configured to support the stage from a side of a rear surface of the stage that is opposite to a placement surface on which the substrate is placed; a temperature adjustment member including a plate securing the stage from a lower surface of the stage, a shaft extending downwards from the plate, and a hole accommodating the support through the shaft from the plate, and being capable of a temperature adjustment; a heat-insulating member disposed between the stage and the temperature adjustment member; and an abutment member configured to abut the substrate placed on the stage.
    Type: Application
    Filed: September 18, 2019
    Publication date: March 26, 2020
    Inventors: Kohichi SATOH, Toshiaki FUJISATO, Daisuke TORIYA
  • Publication number: 20200010956
    Abstract: There is provided a film-forming apparatus including: a processing container, wherein a reaction gas is supplied into the processing container; a stage disposed inside the processing container and provided with a substrate heating part, the stage being configured to place a substrate thereon; a support member configured to support the stage from a rear surface of the stage, wherein the rear surface faces a placement surface on which the substrate is placed; a temperature control member disposed on the rear surface of the stage and including a hollow portion formed to cover the support member, the temperature control member configured to have a controllable temperature; a heat-insulating member disposed between the stage and the temperature control member; and a purge gas supply part configured to supply a purge gas to a first gap formed between the support member and the temperature control member.
    Type: Application
    Filed: June 28, 2019
    Publication date: January 9, 2020
    Inventors: Daisuke TORIYA, Toshiaki FUJISATO, Yuichi FURUYA
  • Patent number: 10522467
    Abstract: There is provided a ruthenium wiring, including: a TiON film formed as a base film in a recess formed in a predetermined film on a surface of a substrate; and a ruthenium film formed on the TiON film so as to fill the recess.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 31, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Tadahiro Ishizaka, Toshiaki Fujisato, Cheonsoo Han
  • Publication number: 20190355597
    Abstract: There is provided a method of processing a substrate by a substrate processing apparatus including a substrate mounting table having a refrigerant passage and a heater, and a chiller. The method includes adjusting a temperature of the substrate mounting table to a first temperature to process the substrate; and adjusting the temperature of the substrate mounting table to a second temperature higher than the first temperature to process the substrate. The temperature of the substrate mounting table becomes the second temperature by allowing the refrigerant at a first flow rate to flow from the chiller to the refrigerant passage and operating the heater. The temperature of the substrate mounting table becomes the first temperature by allowing the refrigerant at a second flow rate larger than the first flow rate to flow from the chiller to the refrigerant passage and operating the heater, or stopping an operation of the heater.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 21, 2019
    Inventors: Takashi MOCHIZUKI, Toshiaki FUJISATO
  • Patent number: 10340176
    Abstract: There is provided a substrate mounting method of bringing a substrate close to a mounting table to mount the substrate on the mounting table by reducing a protrusion amount of a plurality of projections configured to protrude from a substrate-mounting surface of the mounting table and to support the substrate, the protrusion amount being defined to protrude from the substrate-mounting surface. The method includes: after at least a portion of the substrate is brought into contact with the substrate-mounting surface, halting an operation of bringing the substrate close to the mounting table; and after the halting the operation of bringing the substrate close to the mounting table, resuming the operation of bringing the substrate close to the mounting table.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 2, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Toshiaki Fujisato, Hiroaki Ashizawa, Taichi Monden, Yasushi Fujii, Yu Nunoshige
  • Publication number: 20180112309
    Abstract: There is provided a processing apparatus including a stage disposed inside a chamber, and a cover member provided in an outer edge portion of the stage and configured to partition an interior of the chamber into a processing space above the stage and a bottom space below the stage. The cover member includes a first protrusion portion configured to make surface-to-surface contact with a surface of the stage, a second protrusion portion spaced apart from the first protrusion portion and configured to make surface-to-surface contact with the surface of the stage, and an exhaust path provided between the first protrusion portion and the second protrusion portion and configured to exhaust a gas from a buffer space formed by the cover member and the stage.
    Type: Application
    Filed: October 19, 2017
    Publication date: April 26, 2018
    Inventors: Takashi KAMIO, Toshiaki FUJISATO
  • Publication number: 20180040503
    Abstract: There is provided a substrate mounting method of brining a substrate close to a mounting table to mount the substrate on the mounting table by reducing a protrusion amount of a plurality of projections configured to protrude from a substrate-mounting surface of the mounting table and to support the substrate, the protrusion amount being defined to protrude from the substrate-mounting surface. The method includes: after at least a portion of the substrate is brought into contact with the substrate-mounting surface, halting an operation of bringing the substrate close to the mounting table; and after the halting the operation of bringing the substrate close to the mounting table, resuming the operation of bringing the substrate close to the mounting table.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 8, 2018
    Inventors: Toshiaki FUJISATO, Hiroaki ASHIZAWA, Taichi MONDEN, Yasushi FUJII, Yu NUNOSHIGE
  • Publication number: 20180012844
    Abstract: There is provided a ruthenium wiring, including: a TiON film formed as a base film in a recess formed in a predetermined film on a surface of a substrate; and a ruthenium film formed on the TiON film so as to fill the recess.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 11, 2018
    Inventors: Tadahiro ISHIZAKA, Toshiaki FUJISATO, Cheonsoo HAN
  • Patent number: 9324600
    Abstract: A mounting table structure includes a mounting table body, made of a conductive material, for mounting thereon the processing target object and serving as an electrode; a base table, made of a conductive material, disposed below the mounting table body with a gap therebetween in a state insulated from the mounting table body; a support column, connected to the ground side, for supporting the base table; a high frequency power supply line, connected to the mounting table body, for supplying a high frequency bias power to the mounting table body; and a power stabilization capacitor provided between the ground side and a hot side to which the high frequency bias power is applied. Here, an electrostatic capacitance of the power stabilization capacitor is set to be larger than an electrostatic capacitance of a stray capacitance between the mounting table body and the protective cover member.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 26, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Toshiaki Fujisato, Shiro Hayashi, Hiroyuki Yokohara
  • Patent number: 9253862
    Abstract: In a plasma processing method, plasma processing is performed in a state where the object is attracted and held on the electrostatic chuck by applying a first voltage as an application voltage thereto and a thermal conduction gas is supplied to a gap between the electrostatic chuck and the object. The application voltage is decreased while stopping the supply of the thermal conduction gas and exhausting the thermal conduction gas remaining between the electrostatic chuck and the object upon completion of the plasma processing. The object is separated from the electrostatic chuck by setting the application voltage to the electrostatic chuck to zero after the application voltage is decreased.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: February 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Tatsuo Hirasawa, Osamu Yokoyama, Chiaki Yasumuro, Toshiaki Fujisato, Ryota Yoshida, Takashi Sakuma, Cheonsoo Han
  • Publication number: 20140090597
    Abstract: In a plasma processing method, plasma processing is performed in a state where the object is attracted and held on the electrostatic chuck by applying a first voltage as an application voltage thereto and a thermal conduction gas is supplied to a gap between the electrostatic chuck and the object. The application voltage is decreased while stopping the supply of the thermal conduction gas and exhausting the thermal conduction gas remaining between the electrostatic chuck and the object upon completion of the plasma processing. The object is separated from the electrostatic chuck by setting the application voltage to the electrostatic chuck to zero after the application voltage is decreased.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 3, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tatsuo HIRASAWA, Osamu YOKOYAMA, Chiaki YASUMURO, Toshiaki FUJISATO, Ryota YOSHIDA, Takashi SAKUMA, Cheonsoo HAN