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).

  • Publication number: 20210366691
    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: Application
    Filed: May 10, 2019
    Publication date: November 25, 2021
    Inventors: Michishige Saito, Kazuya Nagaseki, Shota Kaneko
  • Patent number: 11170979
    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: Grant
    Filed: December 20, 2019
    Date of Patent: November 9, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Koichi Nagami, Kazunobu Fujiwara, Tatsuro Ohshita, Takashi Dokan, Koji Maruyama, Kazuya Nagaseki, Shinji Himori
  • Patent number: 11152194
    Abstract: An apparatus comprises an electron source chamber, an electron-beam sustained plasma (ESP) processing chamber, and a dielectric injector disposed between the electron source chamber and the ESP processing chamber. The dielectric injector comprises a first flared input region comprising a wide entry opening and a narrow exit opening. The wide entry opening opens into to the electron source chamber. The first flared input region is radially symmetric about a longitudinal axis of the dielectric injector. The dielectric injector further comprises a first parallel region comprising an input opening and an output opening. The input opening is adjacent to the narrow exit opening. The output opening is disposed opposite of the input opening. The first parallel region is cylindrical.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: October 19, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Zhiying Chen, Joel Blakeney, Peter Ventzek, Alok Ranjan, Kazuya Nagaseki
  • Publication number: 20210319988
    Abstract: A substrate support stage includes a substrate mounting surface on which a substrate is mounted and a ring mount on which an edge ring is mounted. The edge ring is disposed so as to surround the substrate mounted on the substrate mounting surface. The ring mount is provided with a plurality of gas ejection ports configured to eject a gas toward a lower surface side of the edge ring to levitate the edge ring while the edge ring is being mounted on the ring mount, thereby allowing the gas to flow out from a gap between inner and outer peripheries of the lower surface side of the edge ring and the ring mount.
    Type: Application
    Filed: April 12, 2021
    Publication date: October 14, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI
  • Publication number: 20210296102
    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: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Inventors: Kazuya NAGASEKI, Kazuki MOYAMA, Toshiya MATSUDA, Naokazu FURUYA, Tatsuro OHSHITA
  • Publication number: 20210268670
    Abstract: A part transporting device for transporting a consumable part includes a part housing, a container, a robot arm, and a moving mechanism. The part housing accommodates an unused consumable part and a used consumable part. The container has an opening to be connected to a processing device and a gate valve for opening or closing the opening, the container being configured to accommodate the part housing. The robot arm is provided in the container and has at least one end effector at a tip end thereof, the robot arm transferring the used consumable part from the processing device through the opening to accommodate the used consumable part in the part housing and transferring the unused consumable part from the part housing to load the unused consumable part into the processing device through the opening. The moving mechanism has a power source and is configured to move the part transporting device.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI, Toshiya MATSUDA
  • Publication number: 20210269258
    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: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI, Toshiya MATSUDA
  • Patent number: 11107663
    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: February 8, 2019
    Date of Patent: August 31, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kazuya Nagaseki
  • Patent number: 11043389
    Abstract: A substrate processing method includes a first expanding step, a first gas supplying step, a first plasma processing step, and a first power stopping step. The first expanding step increases the volume of a gas diffusion chamber. The first gas supplying step supplies a first gas into the gas diffusion chamber. The first plasma processing step supplies radio-frequency power from a radio-frequency power supply to generate plasma in a processing chamber accommodating a substrate and reduces the volume of the gas diffusion chamber. The first power stopping step stops the supply of the radio-frequency power after the first plasma processing step.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: June 22, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kazuya Nagaseki
  • Publication number: 20210159049
    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: November 24, 2020
    Publication date: May 27, 2021
    Applicant: Tokyo Electron Limited
    Inventors: Shinji KUBOTA, Kazuya NAGASEKI, Shinji HIMORI, Koichi NAGAMI
  • Publication number: 20210111005
    Abstract: A member to be used in a substrate processing apparatus is provided. The member is formed of aluminum containing silicon, and the silicon has a particle diameter of 1 ?m or less.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Inventors: Takayuki Ishii, Kazuya Nagaseki, Michishige Saito, Shota Kaneko
  • Publication number: 20210050240
    Abstract: A semiconductor substrate is transferred accurately with respect to an edge ring. A transfer apparatus uses a transfer method for a substrate processing system, where the method includes tray loading, measuring, positioning, substrate placement, and tray removing. The tray loading includes loading a tray on which a semiconductor substrate and an edge ring are placeable into a mounting chamber including a support. The measurement includes measuring a position of the edge ring placed on the tray and obtaining position information about the edge ring. The positioning includes positioning the semiconductor substrate based on the position information. The substrate placement includes placing the positioned semiconductor substrate onto the tray. The tray removing includes removing the tray on which the semiconductor substrate and the edge ring are placed from the mounting chamber.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 18, 2021
    Applicant: Tokyo Electron Limited
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI
  • Publication number: 20210013015
    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: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuya NAGASEKI, Shinji HIMORI, Mitsunori OHATA
  • Patent number: 10886135
    Abstract: In a substrate processing method, electrons having a first energy are supplied from an electron beam generator into an inner space of a chamber body of a substrate processing apparatus to generate negative ions by attaching the electrons to molecules in a processing gas supplied to the inner space. Then a positive bias voltage is applied to an electrode of a supporting table that supports a substrate mounted on thereon in the inner space to attract the negative ions to the substrate.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: January 5, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shinji Kubota, Kazuya Nagaseki, Akihiro Yokota, Gen Tamamushi
  • Publication number: 20200373166
    Abstract: A substrate processing method includes a first expanding step, a first gas supplying step, a first plasma processing step, and a first power stopping step. The first expanding step increases the volume of a gas diffusion chamber. The first gas supplying step supplies a first gas into the gas diffusion chamber. The first plasma processing step supplies radio-frequency power from a radio-frequency power supply to generate plasma in a processing chamber accommodating a substrate and reduces the volume of the gas diffusion chamber. The first power stopping step stops the supply of the radio-frequency power after the first plasma processing step.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 26, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI
  • Publication number: 20200365372
    Abstract: An apparatus comprises an electron source chamber, an electron-beam sustained plasma (ESP) processing chamber, and a dielectric injector disposed between the electron source chamber and the ESP processing chamber. The dielectric injector comprises a first flared input region comprising a wide entry opening and a narrow exit opening. The wide entry opening opens into to the electron source chamber. The first flared input region is radially symmetric about a longitudinal axis of the dielectric injector. The dielectric injector further comprises a first parallel region comprising an input opening and an output opening. The input opening is adjacent to the narrow exit opening. The output opening is disposed opposite of the input opening. The first parallel region is cylindrical.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 19, 2020
    Inventors: Zhiying Chen, Joel Blakeney, Peter Ventzek, Alok Ranjan, Kazuya Nagaseki
  • Publication number: 20200365369
    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: Application
    Filed: May 14, 2019
    Publication date: November 19, 2020
    Inventors: Zhiying Chen, Joel Blakeney, Megan Carruth, Peter Ventzek, Alok Ranjan, Kazuya Nagaseki
  • Publication number: 20200357658
    Abstract: An etching apparatus includes: a placement table serving as a lower electrode and configured to place a workpiece to be subjected to an etching processing thereon; a DC power supply configured to generate a negative DC voltage applied to the placement table; and a controller configured to: periodically apply a negative DC voltage to the placement table from the DC power supply when the etching processing on the workpiece placed on the placement table is initiated, and decrease a frequency of the negative DC voltage applied to the placement table with an elapse of processing time of the etching processing.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Koichi Nagami, Kazuya Nagaseki
  • Patent number: 10825663
    Abstract: Disclosed is a plasma processing apparatus including: a processing container; a placing table provided in the processing container and configured to place a workpiece thereon; a dielectric member having a facing surface that faces the placing table; a planar 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 processing container via the dielectric member; and an electromagnet group disposed along an outer circumference of the processing container and configured to form a magnetic field for moving ions in plasma based on the induced electric field along the facing surface of the dielectric member in the processing container.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 3, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuya Nagaseki, Shinji Himori, Mitsunori Ohata
  • Publication number: 20200312623
    Abstract: A substrate processing apparatus includes a processing chamber that accommodates a substrate, a gas supply having a gas diffusion chamber and a plurality of gas holes that communicates the gas diffusion chamber with the processing chamber, a gas inlet tube that introduces a gas into the gas diffusion chamber of the gas supply, and a gas source connected to the gas inlet tube and supplies the gas to the gas inlet tube. The gas supply has a volume variable device for changing a volume in the gas diffusion chamber.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 1, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI, Shinji HIMORI, Michishige SAITO, Gen TAMAMUSHI