Patents by Inventor John E. Daugherty

John E. Daugherty 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: 6533910
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber includes a carbonitride containing surface and process for manufacture thereof.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: March 18, 2003
    Assignee: Lam Research Corporation
    Inventors: Robert J. O'Donnell, John E. Daugherty, Christopher C. Chang
  • Publication number: 20030005943
    Abstract: A method for cleaning a processing chamber is provided. The method initiates with introducing a fluorine containing gaseous mixture into a processing chamber. Then, a plasma is created from the fluorine containing gaseous mixture in the processing chamber. Next, a chamber pressure is established that corresponds to a threshold ion energy in which ions of the plasma clean inner surfaces of the processing chamber without leaving a residue. A method for substantially eliminating residual aluminum fluoride particles deposited by an in-situ cleaning process for a semiconductor processing chamber and a plasma processing system for executing an in-situ cleaning process are also provided.
    Type: Application
    Filed: May 2, 2002
    Publication date: January 9, 2003
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Harmeet Singh, John E. Daugherty, Saurabh J. Ullal
  • Publication number: 20020142611
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber comprises a cerium oxide containing ceramic material as an outermost surface of the component. The cerium oxide containing ceramic material comprises one or more cerium oxides as the single largest constituent thereof. The component can be made entirely of the cerium oxide containing ceramic material or, alternatively, the cerium oxide containing ceramic can be provided as a layer on a substrate such as aluminum or an aluminum alloy, a ceramic material, stainless steel, or a refractory metal. The cerium oxide containing ceramic layer can be provided as a coating by a technique such as plasma spraying. One or more intermediate layers may be provided between the component and the cerium oxide containing ceramic coating.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 3, 2002
    Inventors: Robert J. O'Donnell, John E. Daugherty
  • Publication number: 20020094378
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber includes a carbonitride containing surface and process for manufacture thereof.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 18, 2002
    Inventors: Robert J. O'Donnell, John E. Daugherty, Christopher C. Chang
  • Publication number: 20020086501
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber includes a diamond containing surface and process for manufacture thereof.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Robert J. O'Donnell, John E. Daugherty, Christopher C. Chang
  • Publication number: 20020086553
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber includes a fullerene containing surface and process for manufacturing thereof.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Robert J. O'Donnell, Christopher C. Chang, John E. Daugherty
  • Publication number: 20020086153
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber comprises zirconia toughened ceramic material as an outermost surface of the component. The component can be made entirely of the ceramic material or the ceramic material can be provided as a coating on a substrate such as aluminum or aluminum alloy, stainless steel, or refractory metal. The zirconia toughened ceramic can be tetragonal zirconia polycrystalline (TZP) material, partially-stabilized zirconia (PSZ), or a zirconia dispersion toughened ceramic (ZTC) such as zirconia-toughened alumina (tetragonal zirconia particles dispersed in Al2O3). In the case of a ceramic zirconia toughened coating, one or more intermediate layers may be provided between the component and the ceramic coating. To promote adhesion of the ceramic coating, the component surface or the intermediate layer surface may be subjected to a surface roughening treatment prior to depositing the ceramic coating.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Robert J. O'Donnell, Christopher C. Chang, John E. Daugherty
  • Publication number: 20020086554
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber includes a boron nitride/yttria composite containing surface and process for manufacture thereof.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Robert J. O'Donnell, John E. Daugherty, Christopher C. Chang
  • Publication number: 20020086545
    Abstract: A corrosion resistant component of a plasma chamber includes a liquid crystalline polymer. In a preferred embodiment, the liquid crystalline polymer (LCP) is provided on an aluminum component having an anodized or non-anodized surface. The liquid crystalline polymer can also be provided on an alumina component. The liquid crystalline polymer can be deposited by a method such as plasma spraying. The liquid crystalline polymer may also be provided as a preformed sheet or other shape adapted to cover the exposed surfaces of the reaction chamber. Additionally, the reactor components may be made entirely from liquid crystalline polymer by machining the component from a solid block of liquid crystalline polymer or molding the component from the polymer. The liquid crystalline polymer may contain reinforcing fillers such as glass or mineral fillers.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Robert J. O'Donnell, Christopher C. Chang, John E. Daugherty
  • Patent number: 6344105
    Abstract: Improved methods and apparatus for ion-assisted etch processing in a plasma processing system are disclosed. In accordance with various aspects of the invention, an elevated edge ring, a grooved edge ring, and a RF coupled edge ring are disclosed. The invention operates to improve etch rate uniformity across a substrate (wafer). Etch rate uniformity improvement provided by the invention not only improves fabrication yields but also is cost efficient and does not risk particulate and/or heavy metal contamination.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: February 5, 2002
    Assignee: Lam Research Corporation
    Inventors: John E. Daugherty, Neil Benjamin, Jeff Bogart, Vahid Vahedi, David Cooperberg, Alan Miller, Yoko Yamaguchi