Patents by Inventor Roisin L. Doherty

Roisin L. Doherty 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: 8309440
    Abstract: Embodiments described herein provide methods for processing a substrate. One embodiment comprises positioning a substrate in a processing region of a processing chamber, exposing a surface of the substrate disposed in the processing chamber to an oxygen containing gas to form a first oxygen containing layer on the surface, removing at least a portion of the first oxygen containing layer to expose at least a portion of the surface of the substrate, and exposing the surface of the substrate to an oxygen containing gas to form a second oxygen containing layer on the surface.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 13, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Errol Antonio C. Sanchez, Johanes Swenberg, David K. Carlson, Roisin L. Doherty
  • Publication number: 20110263103
    Abstract: Embodiments described herein provide methods for processing a substrate. One embodiment comprises positioning a substrate in a processing region of a processing chamber, exposing a surface of the substrate disposed in the processing chamber to an oxygen containing gas to form a first oxygen containing layer on the surface, removing at least a portion of the first oxygen containing layer to expose at least a portion of the surface of the substrate, and exposing the surface of the substrate to an oxygen containing gas to form a second oxygen containing layer on the surface.
    Type: Application
    Filed: July 1, 2011
    Publication date: October 27, 2011
    Inventors: Errol Antonio C. SANCHEZ, Johanes SWENBERG, David K. CARLSON, Roisin L. DOHERTY
  • Patent number: 8008166
    Abstract: The present invention generally provides apparatus and method for forming a clean and damage free surface on a semiconductor substrate. One embodiment of the present invention provides a system that contains a cleaning chamber that is adapted to expose a surface of substrate to a plasma cleaning process prior to forming an epitaxial layer thereon. In one embodiment, a method is employed to reduce the contamination of a substrate processed in the cleaning chamber by depositing a gettering material on the inner surfaces of the cleaning chamber prior to performing a cleaning process on a substrate. In one embodiment, oxidation and etching steps are repeatedly performed on a substrate in the cleaning chamber to expose or create a clean surface on a substrate that can then have an epitaxial placed thereon. In one embodiment, a low energy plasma is used during the cleaning step.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: August 30, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Errol Antonio C. Sanchez, Johanes Swenberg, David K. Carlson, Roisin L. Doherty
  • Publication number: 20090029528
    Abstract: The present invention generally provides apparatus and method for forming a clean and damage free surface on a semiconductor substrate. One embodiment of the present invention provides a system that contains a cleaning chamber that is adapted to expose a surface of substrate to a plasma cleaning process prior to forming an epitaxial layer thereon. In one embodiment, a method is employed to reduce the contamination of a substrate processed in the cleaning chamber by depositing a gettering material on the inner surfaces of the cleaning chamber prior to performing a cleaning process on a substrate. In one embodiment, oxidation and etching steps are repeatedly performed on a substrate in the cleaning chamber to expose or create a clean surface on a substrate that can then have an epitaxial placed thereon. In one embodiment, a low energy plasma is used during the cleaning step.
    Type: Application
    Filed: June 25, 2008
    Publication date: January 29, 2009
    Inventors: Errol Antonio C. SANCHEZ, Johanes SWENBERG, David K. CARLSON, Roisin L. DOHERTY