Patents by Inventor Shigeru NAKATSUKA

Shigeru NAKATSUKA 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: 11598005
    Abstract: A deposition chamber includes a vacuum enclosure, an electrostatic chuck having a flat top surface located within a vacuum enclosure, a lift-and-rotation unit extending through or laterally surrounding the electrostatic chuck at a position that is laterally offset from a vertical axis passing through a geometrical center of the electrostatic chuck, a gas supply manifold configured to provide influx of gas into the vacuum enclosure, and a pumping port connected to the vacuum enclosure.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 7, 2023
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Shoichi Murakami, Shigeru Nakatsuka, Syo Fukata, Yusuke Osawa, Shigehiro Fujino, Masaaki Higashitani
  • Patent number: 11551961
    Abstract: An apparatus includes an electrostatic chuck and located within a vacuum enclosure. A plurality of conductive plates can be embedded in the electrostatic chuck, and a plurality of plate bias circuits can be configured to independently electrically bias a respective one of the plurality of conductive plates. Alternatively or additionally, a plurality of spot lamp zones including a respective set of spot lamps can be provided between a bottom portion of the vacuum enclosure and a backside surface of the electrostatic chuck. The plurality of conductive plates and/or the plurality of spot lamp zones can be employed to locally modify chucking force and to provide local temperature control.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: January 10, 2023
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Shoichi Murakami, Shigeru Nakatsuka, Syo Fukata, Yusuke Osawa, Shigehiro Fujino, Masaaki Higashitani
  • Patent number: 11538708
    Abstract: An apparatus includes an electrostatic chuck and located within a vacuum enclosure. A plurality of conductive plates can be embedded in the electrostatic chuck, and a plurality of plate bias circuits can be configured to independently electrically bias a respective one of the plurality of conductive plates. Alternatively or additionally, a plurality of spot lamp zones including a respective set of spot lamps can be provided between a bottom portion of the vacuum enclosure and a backside surface of the electrostatic chuck. The plurality of conductive plates and/or the plurality of spot lamp zones can be employed to locally modify chucking force and to provide local temperature control.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: December 27, 2022
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Shoichi Murakami, Shigeru Nakatsuka, Syo Fukata, Yusuke Osawa, Shigehiro Fujino, Masaaki Higashitani
  • Publication number: 20210391154
    Abstract: An anisotropic etch apparatus contains an electrostatic chuck located in a vacuum enclosure and including a lower electrode, an upper electrode overlying the lower electrode and located in the vacuum enclosure, a main radio frequency (RF) power source configured to provide an RF bias voltage between the lower electrode and the upper electrode, and a plurality of conductive edge ring segments surrounding the electrostatic chuck and configured for at least one of independent vertical movement relative to the electrostatic chuck or for independently receiving a different RF bias voltage.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 16, 2021
    Inventors: Syo FUKATA, Shoichi MURAKAMI, Shigeru NAKATSUKA, Yusuke OSAWA, Shigehiro FUJINO, Masaaki HIGASHITANI
  • Publication number: 20210351058
    Abstract: An apparatus includes an electrostatic chuck and located within a vacuum enclosure. A plurality of conductive plates can be embedded in the electrostatic chuck, and a plurality of plate bias circuits can be configured to independently electrically bias a respective one of the plurality of conductive plates. Alternatively or additionally, a plurality of spot lamp zones including a respective set of spot lamps can be provided between a bottom portion of the vacuum enclosure and a backside surface of the electrostatic chuck. The plurality of conductive plates and/or the plurality of spot lamp zones can be employed to locally modify chucking force and to provide local temperature control.
    Type: Application
    Filed: May 6, 2020
    Publication date: November 11, 2021
    Inventors: Shoichi MURAKAMI, Shigeru NAKATSUKA, Syo FUKATA, Yusuke OSAWA, Shigehiro FUJINO, Masaaki HIGASHITANI
  • Publication number: 20210348272
    Abstract: A deposition chamber includes a vacuum enclosure, an electrostatic chuck having a flat top surface located within a vacuum enclosure, a lift-and-rotation unit extending through or laterally surrounding the electrostatic chuck at a position that is laterally offset from a vertical axis passing through a geometrical center of the electrostatic chuck, a gas supply manifold configured to provide influx of gas into the vacuum enclosure, and a pumping port connected to the vacuum enclosure.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 11, 2021
    Inventors: Shoichi MURAKAMI, Shigeru NAKATSUKA, Syo FUKATA, Yusuke OSAWA, Shigehiro FUJINO, Masaaki HIGASHITANI
  • Publication number: 20210351059
    Abstract: An apparatus includes an electrostatic chuck and located within a vacuum enclosure. A plurality of conductive plates can be embedded in the electrostatic chuck, and a plurality of plate bias circuits can be configured to independently electrically bias a respective one of the plurality of conductive plates. Alternatively or additionally, a plurality of spot lamp zones including a respective set of spot lamps can be provided between a bottom portion of the vacuum enclosure and a backside surface of the electrostatic chuck. The plurality of conductive plates and/or the plurality of spot lamp zones can be employed to locally modify chucking force and to provide local temperature control.
    Type: Application
    Filed: May 6, 2020
    Publication date: November 11, 2021
    Inventors: Shoichi MURAKAMI, Shigeru NAKATSUKA, Syo FUKATA, Yusuke OSAWA, Shigehiro FUJINO, Masaaki HIGASHITANI