Patents by Inventor Kazuya Nagaseki

Kazuya Nagaseki 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: 11967487
    Abstract: A forming method of a component for use in a plasma processing apparatus includes irradiating, while supplying a source material of a first ceramic and a source material of a second ceramic different from the first ceramic, an energy beam to the source material of the first ceramic and the source material of the second ceramic.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: April 23, 2024
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Michishige Saito, Kazuya Nagaseki, Shota Kaneko
  • Publication number: 20240096608
    Abstract: A plasma monitoring system includes a monitoring device and a control device. The monitoring device is a device to be placed on a stage in the plasma processing apparatus. The monitoring device includes a plate-shaped base substrate, and a plurality of spectroscopes having optical axes facing upward on the base substrate, and being disposed apart from each other to acquire light emission intensities of the plasma. The control device acquires light emission intensity distribution data of the plasma in the plasma processing apparatus based on the light emission intensity acquired by each of the plurality of spectroscopes.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 21, 2024
    Applicant: Tokyo Electron Limited
    Inventors: Satoru TERUUCHI, Jun HIROSE, Kazuya NAGASEKI, Shinji HIMORI
  • Patent number: 11919032
    Abstract: A film forming apparatus is disclosed. The apparatus comprises a chamber; an exhaust unit configured to reduce the pressure in the chamber to a predetermined vacuum level; a holder disposed in the chamber and configured to hold a film forming target member on which a film is to be formed; a supply unit configured to supply a film forming material containing silicon to a surface of the film forming target member; and a heat source configured to perform heating at the predetermined vacuum level to melt the supplied film forming material.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: March 5, 2024
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Takayuki Ishii, Kazuya Nagaseki, Michishige Saito
  • Publication number: 20240068921
    Abstract: A particle monitoring system includes a light emitting device for irradiating an inside of a plasma processing apparatus with light, and a monitoring device to be placed on a stage in the plasma processing apparatus. The monitoring device includes a base substrate, a plurality of imaging devices, and a control device. The base substrate has a plate shape. The plurality of imaging devices have optical axes facing upward on the base substrate, and are disposed apart from each other to capture images including scattered light from the particle irradiated with the light. The control device discriminates the particle in the images captured by the plurality of imaging devices.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: Tokyo Electron Limited
    Inventors: Satoru TERUUCHI, Jun HIROSE, Kazuya NAGASEKI, Shinji HIMORI
  • Patent number: 11699573
    Abstract: A plasma processing system includes a chamber, a gas supply unit, a gas exhaust unit, a separating unit, a boost unit and an accumulation unit. The chamber is configured to process a target substrate by plasma of a gaseous mixture of a rare gas and a processing gas. The gas supply unit is configured to supply the rare gas and the processing gas into the chamber. The gas exhaust unit is configured to exhaust a gas containing the rare gas from the chamber. The separating unit is configured to separate the rare gas from the gas exhausted by the gas exhaust unit. The boost unit is configured to boost the rare gas separated by the separating unit. The accumulation unit is configured to accumulate the rare gas boosted by the boost unit and supply the accumulated first rare gas to the gas supply unit.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: July 11, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kazuya Nagaseki
  • Patent number: 11613432
    Abstract: A method includes estimating a replacement time of a consumable part of a processing device, specifying a timing after substrate processing of the processing device is completed in a period before the replacement time as a replaceable timing of the consumable part, estimating a movement time period required for the part transporting device to move to a position of the processing device requiring the replacement, and estimating a preparation time period required for preparation until the part transporting device moved to the position of the processing device requiring the replacement becomes a state in which the consumable part is replaceable. The method further includes transmitting a replacement instruction to the part transporting device at a timing before a timing that is earlier than the replaceable timing by a total time of the movement time period and the preparation time period, and instructing the replacement of the consumable part.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: March 28, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kazuya Nagaseki, Toshiya Matsuda
  • Publication number: 20220301825
    Abstract: A disclosed plasma processing method includes generating plasma in a chamber of a plasma processing apparatus by supplying radio frequency power from a radio frequency power source in a first period. The plasma processing method further includes stopping supply of the radio frequency power from the radio frequency power source in a second period following the first period. The plasma processing method further includes applying a negative direct-current voltage from a bias power source to a substrate support in a third period following the second period. In the third period, the radio frequency power is not supplied. In the third period, the negative direct-current voltage is set to generate ions in a chamber by secondary electrons that are emitted by causing ions in the chamber to collide with a substrate.
    Type: Application
    Filed: June 8, 2022
    Publication date: September 22, 2022
    Applicant: Tokyo Electron Limited
    Inventors: Shinji KUBOTA, Kazuya NAGASEKI, Shinji HIMORI, Koichi NAGAMI
  • Patent number: 11450515
    Abstract: An apparatus includes a plasma processing container; a workpiece placement table disposed in the plasma processing container; a dielectric member having a facing surface that faces the workpiece placement table; an antenna provided on a surface of the dielectric member opposite to the facing surface and configured to introduce an induced electric field for plasma excitation into the plasma processing container via the dielectric member; an electromagnet group disposed along an outer circumference of the plasma processing container and configured to form a magnetic field in the plasma processing container; and a controller configured to control magnitudes of electric currents flowing through respective electromagnets of the electromagnet group differently from each other, to generate a magnetic gradient along a circumferential direction in the magnetic field that exists only in an outer circumferential space in the plasma processing container.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: September 20, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuya Nagaseki, Shinji Himori, Mitsunori Ohata
  • Patent number: 11443924
    Abstract: An upper electrode for a plasma processing apparatus, includes an electrode having a gas discharge hole, a gas plate having a gas flow path formed at a position facing the gas discharge hole to supply a processing gas to the gas discharge hole, an electrostatic attraction part interposed between the electrode and the gas plate and having a contact surface that is in contact with a lower surface of the gas plate and an attraction surface that attracts an upper surface of the electrode, and a shield that shields radicals or gas moving from the gas discharge hole to a gap between the electrode and the gas plate.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: September 13, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Gen Tamamushi, Kazuya Nagaseki, Chishio Koshimizu
  • Patent number: 11393662
    Abstract: A method of plasma processing comprises generating electrons in a source chamber, generating an electric potential gradient between the source chamber and a processing chamber by applying a first negative direct current (DC) voltage to the source chamber and a ground voltage to the processing chamber, accelerating the electrons from the source chamber through a dielectric injector and into the processing chamber using the electric potential gradient, and generating an electron-beam sustained plasma (ESP) in the processing chamber using the electrons from the source chamber.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: July 19, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Zhiying Chen, Joel Blakeney, Megan Carruth, Peter Ventzek, Alok Ranjan, Kazuya Nagaseki
  • Publication number: 20220223427
    Abstract: A plasma processing apparatus includes a chamber; a substrate support disposed in the chamber and including a lower electrode; an upper electrode disposed above the substrate support; an RF source that supplies an RF power to the lower electrode or the upper electrode, the RF power having a plurality of power levels during a first sequence in a repeating time period, the plurality of power levels including a first power level during a first state and a second state, and a second power level during a third state and a fourth state; and a DC source that applies a DC voltage to the lower electrode, the DC voltage having a plurality of voltage levels during the first sequence in the repeating time period.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 14, 2022
    Applicant: Tokyo Electron Limited
    Inventors: Gen Tamamushi, Kazuya Nagaseki
  • Patent number: 11387077
    Abstract: A disclosed plasma processing method includes generating plasma in a chamber of a plasma processing apparatus by supplying radio frequency power from a radio frequency power source in a first period. The plasma processing method further includes stopping supply of the radio frequency power from the radio frequency power source in a second period following the first period. The plasma processing method further includes applying a negative direct-current voltage from a bias power source to a substrate support in a third period following the second period. In the third period, the radio frequency power is not supplied. In the third period, the negative direct-current voltage is set to generate ions in a chamber by secondary electrons that are emitted by causing ions in the chamber to collide with a substrate.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: July 12, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shinji Kubota, Kazuya Nagaseki, Shinji Himori, Koichi Nagami
  • Patent number: 11315770
    Abstract: An exhaust device including an exhaust mechanism and an exhaust unit is provided. The exhaust mechanism includes a first blade unit and a second blade unit provided in an exhaust space of a processing vessel including a processing space of a vacuum atmosphere for applying a process to a workpiece. The first blade unit and the second blade unit are arranged coaxially with a periphery of the workpiece, and at least one of the first blade unit and the second blade unit is rotatable. The exhaust unit is provided at a downstream side of the exhaust mechanism and communicates with the exhaust space. The exhaust unit is configured to exhaust gas in the processing vessel.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: April 26, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Kazuya Nagaseki, Kazuki Moyama, Toshiya Matsuda, Naokazu Furuya, Tatsuro Ohshita
  • Patent number: 11315793
    Abstract: An etching method is performed in a state where a substrate is placed on a substrate support provided in a chamber of a plasma processing apparatus. In the etching method, radio-frequency power is supplied to generate plasma from a gas in the chamber. Subsequently, a negative DC voltage is applied to a lower electrode of the substrate support during the supplying of the radio-frequency power to etch the substrate with positive ions from plasma. Subsequently, the applying of the negative DC voltage to the lower electrode and the supplying of the radio-frequency power are stopped to generate negative ions. Subsequently, a positive DC voltage is applied to the lower electrode in a state where the supply of the radio-frequency power is stopped to supply the negative ions to the substrate.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 26, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Gen Tamamushi, Kazuya Nagaseki
  • Publication number: 20220062943
    Abstract: A film forming apparatus is disclosed. The apparatus comprises a chamber; an exhaust unit configured to reduce the pressure in the chamber to a predetermined vacuum level; a holder disposed in the chamber and configured to hold a film forming target member on which a film is to be formed; a supply unit configured to supply a film forming material containing silicon to a surface of the film forming target member; and a heat source configured to perform heating at the predetermined vacuum level to melt the supplied film forming material.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Takayuki ISHII, Kazuya NAGASEKI, Michishige SAITO
  • Publication number: 20220028665
    Abstract: A decrease of an etching rate of a substrate can be suppressed, and energy of ions irradiated to an inner wall of a chamber main body can be reduced. A plasma processing apparatus includes a DC power supply configured to generate a negative DC voltage to be applied to a lower electrode of a stage. In a plasma processing performed by using the plasma processing apparatus, a radio frequency power is supplied to generate plasma by exciting a gas within a chamber. Further, the negative DC voltage from the DC power supply is periodically applied to the lower electrode to attract ions in the plasma onto the substrate placed on the stage. A ratio occupied, within each of cycles, by a period during which the DC voltage is applied to the lower electrode is set to be equal to or less than 40%.
    Type: Application
    Filed: October 7, 2021
    Publication date: January 27, 2022
    Inventors: Koichi Nagami, Kazunobu Fujiwara, Tatsuro Ohshita, Takashi Dokan, Koji Maruyama, Kazuya Nagaseki, Shinji Himori
  • Patent number: 11227786
    Abstract: Disclosed is a method of manufacturing an electrostatic chuck configured to attract a substrate by applying a voltage to a first electrode layer. The method includes forming the first electrode layer on a first resin layer on a base and thermally spraying ceramics or a ceramics-containing material on the first electrode layer. The thermally spraying the ceramic or the ceramics-containing material includes transporting powder of a thermal spray material, introduced into a nozzle from a feeder, by a plasma generation gas and spraying the powder from an opening in a tip end portion of the nozzle, dissociating the sprayed plasma generation gas by electric power of 500 W to 10 kW to generate plasma having a common axis with the nozzle, and forming the powder of the thermal spray material into a liquid phase by the generated plasma to form a film on the first electrode layer.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 18, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Satoshi Taga, Yoshiyuki Kobayashi, Kazuya Nagaseki
  • Publication number: 20210391153
    Abstract: A stage includes a first member made of a material having a density of 5.0 g/cm3 or less, and a second member joined to the first member. The second member is made of a material having a linear expansion coefficient of 5.0×10?6/K or less and a thermal conductivity of 100 W/mK or more. A flow passage for a temperature control medium is formed in at least one of the first member and the second member.
    Type: Application
    Filed: June 3, 2021
    Publication date: December 16, 2021
    Inventors: Takayuki ISHII, Kazuya NAGASEKI, Michishige SAITO
  • Publication number: 20210375592
    Abstract: A plasma processing system includes a chamber, a gas supply unit, a gas exhaust unit, a separating unit, a boost unit and an accumulation unit. The chamber is configured to process a target substrate by plasma of a gaseous mixture of a rare gas and a processing gas. The gas supply unit is configured to supply the rare gas and the processing gas into the chamber. The gas exhaust unit is configured to exhaust a gas containing the rare gas from the chamber. The separating unit is configured to separate the rare gas from the gas exhausted by the gas exhaust unit. The boost unit is configured to boost the rare gas separated by the separating unit. The accumulation unit is configured to accumulate the rare gas boosted by the boost unit and supply the accumulated first rare gas to the gas supply unit.
    Type: Application
    Filed: August 5, 2021
    Publication date: December 2, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI
  • Publication number: 20210366697
    Abstract: A forming method of a component used in a plasma processing apparatus includes irradiating an energy beam to a source material of the component while supplying the source material based on a surface state of the component.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 25, 2021
    Inventors: Michishige SAITO, Kazuya NAGASEKI, Shota KANEKO