Patents by Inventor Karthik Colinjivadi

Karthik Colinjivadi 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: 8431033
    Abstract: A physical vapor deposition (PVD) system and method includes a chamber including a target and a pedestal supporting a substrate. A target bias device supplies DC power to the target during etching of the substrate. The DC power is greater than or equal to 8 kW. A magnetic field generating device, including electromagnetic coils and/or permanent magnets, creates a magnetic field in a chamber of the PVD system during etching of the substrate. A radio frequency (RF) bias device supplies an RF bias to the pedestal during etching of the substrate. The RF bias is less than or equal to 120V at a predetermined frequency. A magnetic field produced in the target is at least 100 Gauss inside of the target.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 30, 2013
    Assignee: Novellus Systems, Inc.
    Inventors: Chunming Zhou, Liqi Wu, Karthik Colinjivadi, Emery Kuo, Huatan Qiu, KieJin Park
  • Publication number: 20120228125
    Abstract: A physical vapor deposition (PVD) system includes N coaxial coils arranged in a first plane parallel to a substrate-supporting surface of a pedestal in a chamber of a PVD system and below the pedestal. M coaxial coils are arranged adjacent to the pedestal. Plasma is created in the chamber. A magnetic field well is created above a substrate by supplying N currents to the N coaxial coils, respectively, and M currents to the M coaxial coils, respectively. The N currents flow in a first direction in the N coaxial coils and the M second currents flow in a second direction in the M coaxial coils that is opposite to the first direction. A recessed feature on the substrate arranged on the pedestal is filled with a metal-containing material by PVD using at least one operation with high density plasma having a fractional ionization of metal greater than 30%.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 13, 2012
    Inventors: Liqi Wu, Ishtak Karim, Huatan Qiu, Kie-Jin Park, Chunming Zhou, Karthik Colinjivadi
  • Publication number: 20120152896
    Abstract: A physical vapor deposition (PVD) system and method includes a chamber including a target and a pedestal supporting a substrate. A target bias device supplies DC power to the target during etching of the substrate. The DC power is greater than or equal to 8 kW. A magnetic field generating device, including electromagnetic coils and/or permanent magnets, creates a magnetic field in a chamber of the PVD system during etching of the substrate. A radio frequency (RF) bias device supplies an RF bias to the pedestal during etching of the substrate. The RF bias is less than or equal to 120V at a predetermined frequency. A magnetic field produced in the target is at least 100 Gauss inside of the target.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Inventors: Chunming Zhou, Liqi Wu, Karthik Colinjivadi, Emery Kuo, Huatan Qiu, KieJin Park
  • Publication number: 20120070589
    Abstract: A physical vapor deposition (PVD) system includes a chamber and a target arranged in a target region of the chamber. A pedestal has a surface for supporting a substrate and is arranged in a substrate region of the chamber. A transfer region is located between the target region and the substrate region. N coaxial coils are arranged in a first plane parallel to the surface of the pedestal and below the pedestal. M coaxial coils are arranged adjacent to the pedestal. N currents flow in a first direction in the N coaxial coils, respectively, and M currents flow in a second direction in the M coaxial coils that is opposite to the first direction, respectively.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 22, 2012
    Inventors: Liqi Wu, Ishtak Karim, Huatan Qiu, Kie-Jin Park, Chunming Zhou, Karthik Colinjivadi