Patents by Inventor Takumasa Nishida

Takumasa Nishida 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: 9824863
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of plasma) can efficiently be suppressed and controlled in order to manufacture stable products. An apparatus includes a processing chamber, a surrounding member disposed so as to surround the processing chamber, an RF induction coil disposed above the top surface, a direct-current magnetic field generator for supplying a direct-current magnetic field to the inner space, and an RF cut filter connected to a direct current (DC) power supply and connected to the direct-current magnetic field generator. The RF cut filter includes a first capacitor connected to a positive terminal of the DC power supply and to ground, and a second capacitor connected to a negative terminal of the DC power supply and to ground.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: November 21, 2017
    Assignee: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima
  • Publication number: 20140174663
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of plasma) can efficiently be suppressed and controlled in order to manufacture stable products. An apparatus includes a processing chamber, a surrounding member disposed so as to surround the processing chamber, an RF induction coil disposed above the top surface, a direct-current magnetic field generator for supplying a direct-current magnetic field to the inner space, and an RF cut filter connected to a direct current (DC) power supply and connected to the direct-current magnetic field generator. The RF cut filter includes a first capacitor connected to a positive terminal of the DC power supply and to ground, and a second capacitor connected to a negative terminal of the DC power supply and to ground.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 26, 2014
    Applicant: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima
  • Patent number: 8691048
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. An apparatus includes a processing chamber, a surrounding member disposed around the processing chamber, an RF induction coil disposed outside the dielectric member, and an air-core coil for generating a direct-current magnetic field supplied to the inner space. The surrounding member seals an opening on top of the processing chamber to create an inner space, and the RF induction coil is above the top surface of the surrounding member.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 8, 2014
    Assignee: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima
  • Publication number: 20120247680
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. An apparatus includes a processing chamber, a surrounding member disposed around the processing chamber, an RF induction coil disposed outside the dielectric member, and an air-core coil for generating a direct-current magnetic field supplied to the inner space. The surrounding member seals an opening on top of the processing chamber to create an inner space, and the RF induction coil is above the top surface of the surrounding member.
    Type: Application
    Filed: June 8, 2012
    Publication date: October 4, 2012
    Inventors: Takumasa Nishida, Shu Nakajima
  • Patent number: 8216421
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. In a method of disposing an object in a chamber and generating the plasma to treat the object, the chamber is sealed by a surrounding member so as to have an inner space, with at least a part of the member including a dielectric material, an RF induction coil is disposed outside the dielectric member, and a direct-current electric field is supplied into the inner space by a method of passing a direct current through the RF induction coil or another method, so that the plasma is stabilized.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: July 10, 2012
    Assignee: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima
  • Publication number: 20080173403
    Abstract: A plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. In a method of disposing an object in a chamber and generating the plasma to treat the object, the chamber is sealed by a surrounding member so as to have an inner space, with at least a part of the member including a dielectric material, an RF induction coil is disposed outside the dielectric member, and a direct-current electric field is supplied into the inner space by a method of passing a direct current through the RF induction coil or another method, so that the plasma is stabilized.
    Type: Application
    Filed: December 5, 2007
    Publication date: July 24, 2008
    Inventors: Takumasa Nishida, Shu Nakajima
  • Patent number: 7320941
    Abstract: There is disclosed a plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. In a method of disposing an object in a chamber and generating the plasma to treat the object, the chamber is sealed by a surrounding member so as to have an inner space, at least a part of the member includes a dielectric material, an RF induction coil is disposed outside the dielectric member, and a direct-current electric field is supplied into the inner space by a method of passing a direct current through the RF induction coil or another method, so that the plasma is stabilized.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: January 22, 2008
    Assignee: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima
  • Publication number: 20040003897
    Abstract: There is disclosed a plasma technique in which a plasma generation technique frequently used in various fields including a semiconductor manufacturing process is used, and generation of plasma instability (high-speed impedance change of a plasma) can efficiently be suppressed and controlled in order to manufacture stable products. In a method of disposing an object in a chamber and generating the plasma to treat the object, the chamber is sealed by a surrounding member so as to have an inner space, at least a part of the member includes a dielectric material, an RF induction coil is disposed outside the dielectric member, and a direct-current electric field is supplied into the inner space by a method of passing a direct current through the RF induction coil or another method, so that the plasma is stabilized.
    Type: Application
    Filed: April 30, 2003
    Publication date: January 8, 2004
    Applicant: Lam Research Corporation
    Inventors: Takumasa Nishida, Shu Nakajima