Patents by Inventor Kazuki Moyama

Kazuki Moyama 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: 20210027992
    Abstract: Embodiments are described herein for power generation systems and methods that use quadrature splitters and combiners to facilitate plasma stability and control. For one embodiment, a quadrature splitter receives an input signal and generates a first and second signals as outputs with the second signal being ninety degrees out of phase with respect to the first signal. Two amplifiers then generate a first and second amplified signals. A quadrature combiner receives the first and second amplified signals and generates a combined amplified signal that represents re-aligned versions of the first and second amplified signals. The power amplifiers can be combined into a system to generate a high power output to a processing chamber. Further, detectors can generate measurements used to monitor and control power generation. The power amplifiers, system, and methods provide significant advantages for high-power generation delivered to process chambers for plasma generation during plasma processing.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 28, 2021
    Inventors: Merritt Funk, Chelsea DuBose, Justin Moses, Kazuki Moyama, Kazushi Kaneko
  • Patent number: 10896842
    Abstract: A manufacturing method of sample table is provided. The sample table holds a semiconductor wafer on which a plasma process is to be performed, and the manufacturing method includes: preparing an adsorption plate that has a contact surface on which a lapping process has been performed and surface-contacting the semiconductor wafer, and that adsorbs the semiconductor wafer; and preparing a supporting substrate which has a recess surface to which a noncontact surface of the adsorption plate is adhered, wherein a difference between a depth of an approximate center portion of the recess surface and a depth of a distant portion spaced apart from the approximate center portion is larger than a difference between a thickness of the adsorption plate at a portion contacting the approximate center portion and a thickness of the adsorption plate at a portion contacting the distant portion.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: January 19, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Wataru Yoshikawa, Kazuki Moyama, Nobuyuki Okayama, Kenji Sudou, Yasuhiro Otsuka
  • Publication number: 20200395901
    Abstract: Embodiments are described for modules, multi-stage systems, and related methods for radio frequency (RF) power amplifiers with reduced size and weight requirements. Fluid cooling is incorporated directly into the power amplifier (PA) module design rather than requiring PA modules to be mounted on separate cooling devices. For one embodiment, a PA module includes a circuit board, RF circuit components, a ground plane, and a cooling plate having one or more cooling channels to receive a cooling fluid. The cooling channels are positioned to dissipate heat from the RF circuit components through the ground plane. For a further embodiment, the PA module also includes RF bias and power electronics within a housing for the PA module without requiring an external control board or power conversion electronics. Also disclosed are multi-stage PA systems having a plurality of PA modules that are similarly cooled using cooling channels.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 17, 2020
    Inventors: Chelsea DuBose, Merritt Funk, Justin Moses, Kazuki Moyama, Kazushi Kaneko
  • 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: 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
  • Patent number: 10510512
    Abstract: Embodiments of method and system for controlling plasma performance are described. In an embodiment a method may include supplying power at a first set of power parameters to a plasma chamber. Additionally, the method may include forming plasma within the plasma chamber using the first set of power parameters. The method may also include measuring power coupling to the plasma at the first set of power parameters. Also, the method may include supplying power at a second set of power parameters to the plasma chamber. The method may additionally include measuring power coupling to the plasma at the second set of power parameters to the plasma. The method may also include adjusting the first set of power parameters based, at least in part, on the measuring of the power coupling at the second set of power parameters.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: December 17, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Merritt Funk, Megan Doppel, Kazuki Moyama, Chelsea DuBose, Justin Moses
  • Publication number: 20190376185
    Abstract: A plasma processing apparatus includes: a shower head including a ceiling plate having a plurality of gas holes, and a base member having a space so as to supply the processing gas to the plurality of gas holes; a temperature adjustment mechanism provided in the shower head; an acquisition unit configured to acquire a combination of a plasma parameter and pressure in the space in the base member; an estimation unit configured to estimate temperature of the ceiling plate corresponding to the acquired combination of the parameter and the pressure with reference to temperature information indicating the temperature of the ceiling plate corresponding to the combination of the parameter and the pressure; and a temperature controller configured to control the temperature adjustment mechanism such that the estimated temperature of the ceiling plate becomes target temperature when a plasma processing is performed.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Inventors: Akihiro Yokota, Kazuki Moyama, Koji Maruyama
  • Publication number: 20190252157
    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: February 8, 2019
    Publication date: August 15, 2019
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki MOYAMA, Kazuya NAGASEKI
  • Publication number: 20190228950
    Abstract: Embodiments of method and system for controlling plasma performance are described. In an embodiment a method may include supplying power at a first set of power parameters to a plasma chamber. Additionally, the method may include forming plasma within the plasma chamber using the first set of power parameters. The method may also include measuring power coupling to the plasma at the first set of power parameters. Also, the method may include supplying power at a second set of power parameters to the plasma chamber. The method may additionally include measuring power coupling to the plasma at the second set of power parameters to the plasma. The method may also include adjusting the first set of power parameters based, at least in part, on the measuring of the power coupling at the second set of power parameters.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 25, 2019
    Inventors: Merritt Funk, Megan Doppel, Kazuki Moyama, Chelsea DuBose, Justin Moses
  • Publication number: 20190172689
    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: November 30, 2018
    Publication date: June 6, 2019
    Inventors: Kazuya NAGASEKI, Kazuki MOYAMA, Toshiya MATSUDA, Naokazu FURUYA, Tatsuro OHSHITA
  • Publication number: 20180286740
    Abstract: A manufacturing method of sample table is provided. The sample table holds a semiconductor wafer on which a plasma process is to be performed, and the manufacturing method includes: preparing an adsorption plate that has a contact surface on which a lapping process has been performed and surface-contacting the semiconductor wafer, and that adsorbs the semiconductor wafer; and preparing a supporting substrate which has a recess surface to which a noncontact surface of the adsorption plate is adhered, wherein a difference between a depth of an approximate center portion of the recess surface and a depth of a distant portion spaced apart from the approximate center portion is larger than a difference between a thickness of the adsorption plate at a portion contacting the approximate center portion and a thickness of the adsorption plate at a portion contacting the distant portion.
    Type: Application
    Filed: April 30, 2018
    Publication date: October 4, 2018
    Inventors: Wataru YOSHIKAWA, Kazuki MOYAMA, Nobuyuki OKAYAMA, Kenji SUDOU, Yasuhiro OTSUKA
  • Patent number: 9892951
    Abstract: A method of controlling adherence of microparticles to a substrate to be processed includes applying voltage to an electrostatic chuck configured to electrostatically attract the substrate to be processed in a processing container before the substrate to be processed is carried into the processing container; and, after the applying of voltage to the electrostatic chuck, carrying the substrate to be processed into the processing container. Further, in the applying of voltage to the electrostatic chuck, the voltage is applied to the electrostatic chuck to reduce a potential difference between a focus ring and the substrate to be processed, the focus ring being provided to surround the electrostatic chuck.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: February 13, 2018
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Takehiro Tanikawa, Kazuki Moyama
  • Publication number: 20170133204
    Abstract: There is provided a member for a plasma processing apparatus, the member constituting the plasma processing apparatus configured to generate plasma in a processing space of a processing container and to perform plasma processing on an object to be processed. The member includes a face of the member exposed to the plasma and coated with a protection film. The protection film includes a columnar structure having a plurality of column-shaped portions in substantially cylindrical shapes extending in a thickness direction of the film. The plurality of column-shaped portions is adjacent to one another without gaps therebetween.
    Type: Application
    Filed: November 7, 2016
    Publication date: May 11, 2017
    Inventors: Kazuki MOYAMA, Toyohiro KAMADA, Hiroyuki IKUTA, Yuya MINOURA
  • Publication number: 20170125261
    Abstract: Disclosed is a method of anisotropically etching a transition metal film using a substrate processing apparatus including at least one processing container configured to perform a processing on a workpiece including the transition metal film. The method includes an oxidation step of introducing a first gas containing an oxygen ion into the processing container and irradiating the transition metal film with the oxygen ion to oxidize a transition metal of the transition metal film, thereby forming a metal oxide layer; and a complexation/etching step of introducing a second gas for complexation of the metal oxide layer into the processing container and forming a metal complex in the metal oxide layer, thereby performing an etching.
    Type: Application
    Filed: October 25, 2016
    Publication date: May 4, 2017
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Ryo MIYAMA, Kazuki MOYAMA, Toshihisa NOZAWA
  • Patent number: 9595425
    Abstract: An antenna, a dielectric window, a plasma processing apparatus and a plasma processing method are capable of improving uniformity of a substrate surface processing amount in the surface of the substrate. The antenna includes the dielectric window 16; and a slot plate 20, provided on one side of the dielectric window 16, having a plurality of slots 133. The dielectric window 16 has a flat surface 146 surrounded by a ring-shaped first recess; and a plurality of second recesses 153 formed on the flat surface 146 so as to surround a center of the flat surface 146. Here, the flat surface 146 is formed on the other side of the dielectric window 16. When viewed from a thickness direction of the slot plate, a center of each second recess 153 is located within each slot 133 of the slot plate.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 14, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Naoki Matsumoto, Wataru Yoshikawa, Jun Yoshikawa, Kazuki Moyama, Kiyotaka Ishibashi, Osamu Morita, Takehiro Tanikawa
  • Publication number: 20170011886
    Abstract: Disclosed is a plasma processing apparatus including: a processing container; and a partition plate made of an insulating material, having a plurality of openings, and configured to partition an inside of the processing container into a plasma generating chamber and a processing chamber. A first conductive member made of a conductive material is provided on a surface of the processing chamber side of the partition plate, and the first conductive member is applied with at least one of an AC voltage, and a DC voltage of a polarity that is opposite to a polarity of charged particles guided from the plasma generating chamber into the processing chamber through each of the openings.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 12, 2017
    Applicants: TOKYO ELECTRON LIMITED, TOHOKU TECHNO ARCH CO., LTD
    Inventors: Toshihisa NOZAWA, Kazuki MOYAMA, Ryo MIYAMA, Seiji SAMUKAWA
  • Patent number: 9324572
    Abstract: Provided is a plasma etching method increasing the selectivity of a silicon nitride film in relation to the silicon oxide film or silicon functioning as a base. In a plasma etching method setting a pressure in a processing container as a predetermined level by exhausting a processing gas while supplying the processing gas into the processing container, generating plasma by supplying external energy to the processing container, and setting a bias applied to a holding stage holding a substrate in the processing container as predetermined value to selectively etch the silicon nitride film with respect to a silicon and/or silicon oxide film, the processing gas includes a plasma excitation gas, a CHxFy gas, and at least one oxidizing gas selected from the group consisting of O2, CO2, CO, and a flow rate of the oxidizing gas with respect to the CHxFy gas is set to be 4/9 or greater.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: April 26, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masaru Sasaki, Kazuki Moyama, Masaki Inoue, Yoko Noto
  • Patent number: 9277637
    Abstract: An apparatus for plasma treatment contains a process vessel provided with a mounting table for mounting a substrate, a first gas supplying unit configured to supply a first gas into the process vessel, a first plasma generating unit configured to convert at least a part of the first gas to a first plasma, a second gas supplying unit configured to supply a second gas into the process vessel, and a second plasma generating unit configured to convert at least a part of the second gas to a second plasma. A height of ea an inlet of the second gas from the mounting table is lower than a height of an inlet of the first gas from the mounting table.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: March 1, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Toshihisa Nozawa, Caizhong Tian, Masaru Sasaki, Naoki Mihara, Naoki Matsumoto, Kazuki Moyama, Jun Yoshikawa
  • Patent number: 9111726
    Abstract: A plasma processing apparatus includes a processing chamber, a stage, a dielectric member, a microwave introduction device, an injector, and an electric field shield. The processing chamber has a processing space therein. The stage is provided within the processing chamber. The dielectric member has a through hole and is provided to face the stage. The microwave introduction device is configured to introduce microwave into the processing space via the dielectric member. The injector has at least one through hole and is made of a dielectric material, e.g., a bulk dielectric material. The injector is provided within the dielectric member. The injector and the through hole of the dielectric member form a path for supplying a processing gas into the processing space. The electric field shield encloses the injector.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: August 18, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kiyotaka Ishibashi, Osamu Morita, Takehiro Tanikawa, Naoki Matsumoto, Naoki Mihara, Wataru Yoshikawa
  • Patent number: 9048070
    Abstract: A dielectric window for a plasma treatment device for a plasma treatment device that uses microwaves as a plasma source. The dielectric window is circular-plate-shaped and allows microwaves to propagate. The dielectric window has a recess that has an opening on the lower-surface side and that indents in the plate thickness direction of the dielectric window, and is provided to the lower surface at which plasma is generated when the dielectric window is provided to the plasma treatment device. The recess has a bottom surface extending in the direction perpendicular to the plate thickness direction, and a side surface extending in the plate thickness direction from the circumferential edge of the bottom surface toward the opening of the recess. In addition, an inclined surface extends at an incline relative to the plate thickness direction from the opening-side circumferential edge of the side surface toward the opening of the recess.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 2, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Caizhong Tian, Naoki Matsumoto, Koji Koyama, Naoki Mihara, Kazuki Takahashi, Jun Yoshikawa, Kazuki Moyama, Takehiro Tanikawa