Patents by Inventor Hideaki Yakushiji

Hideaki Yakushiji 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: 20220389584
    Abstract: A shower head for plasma processing includes a body part having a first surface, a second surface opposite to the first surface, and a plurality of inner side surfaces. The plurality of inner side surfaces is configured to define a plurality of gas holes penetrating through the body part from the first surface to the second surface. The second surface is made of a first corrosion-resistant material.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 8, 2022
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Ryutaro SUDA, Maju Tomura, Susumu Nogami, Hideaki Yakushiji, Takahiro Murakami, Yusuke Wako
  • Patent number: 10192719
    Abstract: A plasma processing method is provided that includes a step of loading a substrate into a chamber where a plasma process is to be executed, a step of applying a high frequency bias power that has a lower frequency than a high frequency excitation power for plasma excitation to a mounting table on which the substrate is mounted, and a step of applying a DC voltage to an electrostatic chuck configured to electrostatically attract the substrate that is mounted on the mounting table. The step of applying the DC voltage is performed after the step of applying the high frequency bias power.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 29, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Takamitsu Takayama, Akitoshi Harada, Hideaki Yakushiji
  • Patent number: 9984907
    Abstract: An evacuation method used for a vacuum processing apparatus including a vacuum processing chamber is provided. The vacuum processing chamber is evacuated by an exhaust device for a first predetermined period of time by opening a valve connecting the exhaust device with the vacuum processing chamber. A pressure in the vacuum processing chamber is urged to increase by closing the valve and leaving the valve closed for a second predetermined period of time after evacuating the vacuum processing chamber. Evacuating the vacuum processing chamber and urging the pressure in the vacuum processing chamber to increase are performed so as to reduce the pressure in the vacuum processing chamber to a pressure between 6.7 Pa and 13.3×102 Pa (between 5 Torr and 10 Torr) without freezing moisture in the vacuum processing chamber.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: May 29, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Hirofumi Haga, Nobutaka Nakao, Hideaki Yakushiji
  • Publication number: 20160196957
    Abstract: A plasma processing method is provided that includes a step of loading a substrate into a chamber where a plasma process is to be executed, a step of applying a high frequency bias power that has a lower frequency than a high frequency excitation power for plasma excitation to a mounting table on which the substrate is mounted, and a step of applying a DC voltage to an electrostatic chuck configured to electrostatically attract the substrate that is mounted on the mounting table. The step of applying the DC voltage is performed after the step of applying the high frequency bias power.
    Type: Application
    Filed: December 8, 2015
    Publication date: July 7, 2016
    Inventors: Takamitsu TAKAYAMA, Akitoshi HARADA, Hideaki YAKUSHIJI
  • Publication number: 20160189988
    Abstract: An evacuation method used for a vacuum processing apparatus including a vacuum processing chamber is provided. The vacuum processing chamber is evacuated by an exhaust device for a first predetermined period of time by opening a valve connecting the exhaust device with the vacuum processing chamber. A pressure in the vacuum processing chamber is urged to increase by closing the valve and leaving the valve closed for a second predetermined period of time after evacuating the vacuum processing chamber. Evacuating the vacuum processing chamber and urging the pressure in the vacuum processing chamber to increase are performed so as to reduce the pressure in the vacuum processing chamber to a pressure between 6.7 Pa and 13.3×102 Pa (between 5 Torr and 10 Torr) without freezing moisture in the vacuum processing chamber.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 30, 2016
    Inventors: Hirofumi HAGA, Nobutaka NAKAO, Hideaki YAKUSHIJI
  • Publication number: 20150243489
    Abstract: A Ti-containing remaining in a chamber of a plasma processing apparatus can be simply and efficiently removed. In a Low-k film etching process, immediately after a dry etching process (process S2) is finished, a dry cleaning process is performed in the presence of a wafer while the wafer is held on an electrostatic chuck 40 (process S3). The dry cleaning process (process S3) is performed to mainly remove the Ti-containing reactant remaining in the chamber 10. To this end, a cleaning gas containing a H2 gas and a N2 gas is introduced into the chamber 10 from a processing gas supply unit 70 at a preset flow rate ratio. Then, a first high frequency power HF for plasma generation is applied to a susceptor 12 at a preset power level, so that plasma is generated within the chamber 10 by the high frequency discharge of the cleaning gas.
    Type: Application
    Filed: February 17, 2015
    Publication date: August 27, 2015
    Inventors: Hiroshi Uda, Hiroshi Tsujimoto, Akitoshi Harada, Hideaki Yakushiji, Masaharu Sugiyama
  • Publication number: 20150170891
    Abstract: A particle backflow preventing part, which is disposed inside of an evacuation pipe connecting a process chamber and an evacuation device, includes a first plate part, and a second plate part that has an opening and is spaced from the first plate part by a first gap and positioned closer to the evacuation device than the first plate part. The opening is covered by the first plate part in plan view.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 18, 2015
    Inventors: Masanori TAKAHASHI, Tsuyoshi HIDA, Noboru TAKEMOTO, Hideaki YAKUSHIJI, Lin ChiaHung, Akitoshi HARADA
  • Patent number: 8516715
    Abstract: An evacuation method which can reduce evacuation time without causing moisture-related problems. In a vacuum processing apparatus including a vacuum processing chamber, during the evacuation for the vacuum processing chamber, the pressure in the vacuum processing chamber is maintained at a pressure lower than or equal to the atmospheric pressure but higher than or equal to 6.7×102 Pa (5 Torr).
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 27, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Tsuyoshi Moriya, Hideaki Yakushiji, Kazumasa Abe
  • Patent number: 8243265
    Abstract: A foreign material detecting method for detecting a foreign material attached to a substrate surface includes a spraying step of spraying an organic solvent or an oil-phase material containing a halogen element to the substrate surface, a condensing step of emphasizing the foreign material by condensing the sprayed organic solvent or oil-phase material around the foreign material attached to the substrate surface by controlling a temperature of the substrate surface, and a surface inspecting step of detecting the foreign material emphasized by the condensation of the organic solvent or the oil-phase material by a surface inspecting device.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: August 14, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Hiroshi Nagaike, Hideaki Yakushiji
  • Publication number: 20100118302
    Abstract: A foreign material detecting method for detecting a foreign material attached to a substrate surface includes a spraying step of spraying an organic solvent or an oil-phase material containing a halogen element to the substrate surface, a condensing step of emphasizing the foreign material by condensing the sprayed organic solvent or oil-phase material around the foreign material attached to the substrate surface by controlling a temperature of the substrate surface, and a surface inspecting step of detecting the foreign material emphasized by the condensation of the organic solvent or the oil-phase material by a surface inspecting device.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 13, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tsuyoshi Moriya, Hiroshi Nagaike, Hideaki Yakushiji
  • Publication number: 20080301972
    Abstract: An evacuation method which can reduce evacuation time without causing moisture-related problems. In a vacuum processing apparatus including a vacuum processing chamber, during the evacuation for the vacuum processing chamber, the pressure in the vacuum processing chamber is maintained at a pressure lower than or equal to the atmospheric pressure but higher than or equal to 6.7×102 Pa (5 Torr).
    Type: Application
    Filed: June 6, 2008
    Publication date: December 11, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Tsuyoshi Moriya, Hideaki Yakushiji, Kazumasa Abe