Patents by Inventor Charles W. KOBURGER, II

Charles W. KOBURGER, II 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: 20130178052
    Abstract: A method is provided for fabricating a transistor. A replacement gate stack is formed on a semiconductor layer, a gate spacer is formed, and a dielectric layer is formed. The dummy gate stack is removed to form a cavity. A gate dielectric and a work function metal layer are formed in the cavity. The cavity is filled with a gate conductor. One and only one of the gate conductor and the work function metal layer are selectively recessed. An oxide film is formed in the recess such that its upper surface is co-planar with the upper surface of the dielectric layer. The oxide film is used to selectively grow an oxide cap. An interlayer dielectric is formed and etched to form a cavity for a source/drain contact. A source/drain contact is formed in the contact cavity, with a portion of the source/drain contact being located directly on the oxide cap.
    Type: Application
    Filed: September 14, 2012
    Publication date: July 11, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Susan S. FAN, Balasubramanian S. HARAN, David V. HORAK, Charles W. KOBURGER, II