Patents by Inventor William M. LU

William M. LU 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: 11810766
    Abstract: Embodiments of the present disclosure are directed towards a protective multilayer coating for process chamber components exposed to temperatures from about 20° C. to about 300° C. during use of the process chamber. The protective multilayer coating comprises a bond layer and a top layer, the bond layer is formed on a chamber component to reduce the stress between the top layer and the chamber component. The reduced stress decreases or prevents particle shedding from the top layer of the multilayer coating during and after use of the process chamber. The bond layer comprises titanium, titanium nitride, aluminum, or combinations thereof, and the top layer comprises tungsten nitride.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: November 7, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Karthikeyan Balaraman, Sathyanarayana Bindiganavale, Rajasekhar Patibandla, Balamurugan Ramasamy, Kartik Shah, Umesh M. Kelkar, Mats Larsson, Kevin A. Papke, William M. Lu
  • Patent number: 11072852
    Abstract: Embodiments of the disclosure generally relate to a process kit including a shield serving as an anode in a physical deposition chamber. The shield has a cylindrical band, the cylindrical band having a top and a bottom, the cylindrical band sized to encircle a sputtering surface of a sputtering target disposed adjacent the top and a substrate support disposed at the bottom, the cylindrical band having an interior surface. A texture is disposed on the interior surface. The texture has a plurality of features. A film is provided on a portion of the features. The film includes a porosity of about 2% to about 3.5%.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: July 27, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Brian T. West, Lizhong Sun, William M. Lu
  • Publication number: 20200024725
    Abstract: Embodiments of the disclosure generally relate to a process kit including a shield serving as an anode in a physical deposition chamber. The shield has a cylindrical band, the cylindrical band having a top and a bottom, the cylindrical band sized to encircle a sputtering surface of a sputtering target disposed adjacent the top and a substrate support disposed at the bottom, the cylindrical band having an interior surface. A texture is disposed on the interior surface. The texture has a plurality of features. A film is provided on a portion of the features. The film includes a porosity of about 2% to about 3.5%.
    Type: Application
    Filed: June 28, 2019
    Publication date: January 23, 2020
    Inventors: Brian T. WEST, Lizhong SUN, William M. LU
  • Publication number: 20200013589
    Abstract: Embodiments of the present disclosure are directed towards a protective multilayer coating for process chamber components exposed to temperatures from about 20° C. to about 300° C. during use of the process chamber. The protective multilayer coating comprises a bond layer and a top layer, the bond layer is formed on a chamber component to reduce the stress between the top layer and the chamber component. The reduced stress decreases or prevents particle shedding from the top layer of the multilayer coating during and after use of the process chamber. The bond layer comprises titanium, titanium nitride, aluminum, or combinations thereof, and the top layer comprises tungsten nitride.
    Type: Application
    Filed: May 2, 2019
    Publication date: January 9, 2020
    Inventors: Karthikeyan BALARAMAN, Sathyanarayana BINDIGANAVALE, Rajasekhar PATIBANDLA, Balamurugan RAMASAMY, Kartik SHAH, Umesh M. KELKAR, Mats LARSSON, Kevin A. PAPKE, William M. LU
  • Publication number: 20170145553
    Abstract: Implementations of the present disclosure relate to an improved shield for use in a processing chamber. In one implementation, the shield includes a hollow body having a cylindrical shape that is substantially symmetric about a central axis of the body, and a coating layer formed on an inner surface of the body. The coating layer is formed the same material as a sputtering target used in the processing chamber. The shield advantageously reduces particle contamination in films deposited using RF-PVD by reducing arcing between the shield and the sputtering target. Arcing is reduced by the presence of a coating layer on the interior surfaces of the shield.
    Type: Application
    Filed: November 9, 2016
    Publication date: May 25, 2017
    Inventors: Zhendong LIU, Wenting HOU, Jianxin LEI, Donny YOUNG, William M. LU
  • Patent number: 9001489
    Abstract: The present invention generally relates to a refurbished electrostatic chuck and a method of refurbishing a used electrostatic chuck. Initially, a predetermined amount of dielectric material is removed from the used electrostatic chuck to leave a base surface. Then, the base surface is roughened to enhance the adherence of new dielectric material thereto. The new dielectric material is then sprayed onto the roughened surface. A mask is then placed over the new dielectric material to aid in the formation of mesas upon which a substrate will sit during processing. A portion of the new dielectric layer is then removed to form new mesas. After removing the mask, edges of the mesas may be smoothed and the refurbished electrostatic chuck is ready to return to service after cleaning.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: April 7, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Wendell G. Boyd, Jr., Joseph F. Sommers, William M. Lu, Rajan Balesan
  • Publication number: 20120307412
    Abstract: The present invention generally relates to a refurbished electrostatic chuck and a method of refurbishing a used electrostatic chuck. Initially, a predetermined amount of dielectric material is removed from the used electrostatic chuck to leave a base surface. Then, the base surface is roughened to enhance the adherence of new dielectric material thereto. The new dielectric material is then sprayed onto the roughened surface. A mask is then placed over the new dielectric material to aid in the formation of mesas upon which a substrate will sit during processing. A portion of the new dielectric layer is then removed to form new mesas. After removing the mask, edges of the mesas may be smoothed and the refurbished electrostatic chuck is ready to return to service after cleaning.
    Type: Application
    Filed: April 23, 2012
    Publication date: December 6, 2012
    Applicant: Applied Materials, Inc.
    Inventors: Wendell G. Boyd, JR., Joseph F. Sommers, William M. Lu, Rajan Balesan
  • Publication number: 20120255635
    Abstract: Embodiments described herein generally relate to methods and apparatus for refurbishing a gas distribution plate assembly utilized in a deposition chamber or etch chamber. In one embodiment, a method for refurbishing a gas distribution plate assembly is provided. The method includes urging a faceplate of a gas distribution plate assembly against a polishing pad of a polishing device, the faceplate having a plurality of gas distribution holes disposed therein, providing relative motion between the faceplate and the polishing pad, and polishing the faceplate against the polishing pad.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 11, 2012
    Applicant: Applied Materials, Inc.
    Inventors: Sumanth BANDA, Jennifer Y. SUN, Ren-Guan DUAN, Thomas J. Graves, Wendell G. BOYD, JR., Randolph William DUDLEY, JR., Khoi DOAN, William M. LU