Patents by Inventor Takehiro Tanikawa

Takehiro Tanikawa 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: 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
  • Patent number: 9728417
    Abstract: An exemplary embodiment provides a method which etches a second layer in a base body to be processed having a first layer containing Ni and Si and a second layer containing Si and N which are exposed to a surface thereof. The method according to the exemplary embodiment includes (a) preparing a base body to be processed in a processing chamber, and (b) supplying a first processing gas which contains carbon and fluorine but does not contain oxygen into the processing chamber and generating plasma in the processing chamber.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: August 8, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masaki Inoue, Toshihisa Ozu, Takehiro Tanikawa, Jun Yoshikawa
  • 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
  • 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
  • Publication number: 20150075566
    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: Application
    Filed: November 7, 2012
    Publication date: March 19, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Takehiro Tanikawa, Kazuki Moyama
  • Publication number: 20150017811
    Abstract: An exemplary embodiment provides a method which etches a second layer in a base body to be processed having a first layer containing Ni and Si and a second layer containing Si and N which are exposed to a surface thereof. The method according to the exemplary embodiment includes (a) preparing a base body to be processed in a processing chamber, and (b) supplying a first processing gas which contains carbon and fluorine but does not contain oxygen into the processing chamber and generating plasma in the processing chamber.
    Type: Application
    Filed: November 9, 2012
    Publication date: January 15, 2015
    Inventors: Masaki Inoue, Toshihisa Ozu, Takehiro Tanikawa, Jun Yoshikawa
  • Publication number: 20140312767
    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: Application
    Filed: November 8, 2012
    Publication date: October 23, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Caizhong Tian, Naoki Matsumoto, Koji Koyama, Naoki Mihara, Kazuki Takahashi, Jun Yoshikawa, Kazuki Moyama, Takehiro Tanikawa
  • Publication number: 20130008607
    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: Application
    Filed: July 5, 2012
    Publication date: January 10, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Naoki MATSUMOTO, Wataru YOSHIKAWA, Jun YOSHIKAWA, Kazuki MOYAMA, Kiyotaka ISHIBASHI, Osamu MORITA, Takehiro TANIKAWA
  • Publication number: 20120267048
    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: Application
    Filed: April 24, 2012
    Publication date: October 25, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Kiyotaka Ishibashi, Osamu Morita, Takehiro Tanikawa, Naoki Matsumoto, Naoki Mihara, Wataru Yoshikawa