Patents by Inventor Wing-kei Au

Wing-kei Au 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: 20210311017
    Abstract: Disclosed herein are ruthenium-containing materials, such as ruthenium containing materials having a double layer capacitance ranging from between about 180 pF/um2 to about 320 pF/um2. In some embodiments, the ruthenium-containing materials are suitable for use in electrodes. In some embodiments, the ruthenium-containing materials are suitable for use in nanopore sequencing devices.
    Type: Application
    Filed: February 25, 2021
    Publication date: October 7, 2021
    Inventors: Wing Kei Au, Jason Komadina, Marowen Ng
  • Patent number: 6451698
    Abstract: A method for making reliable interconnect structures on a semiconductor substrate having a first dielectric layer is disclosed. The method includes depositing a glue layer of TiN followed by tungsten chemical vapor deposition after the contact or via is defined in the dielectric. Then, tungsten etchback or Chemical Mechanical Polishing (CMP) is performed to remove the tungsten and TiN over the dielectric surface with slight dishing of the tungsten within the plug. Next, a blanket deposition of Copper by electrochemical deposition is performed and Copper CMP is used to remove the copper from the dielectric surface while maintaining a coating of copper over the tungsten in the plug. Then, metal stack deposition, patterning and metal etching is performed and a barrier layer of silicon nitride is presented to minimize the copper diffusion. Finally, a deposition of an Interlevel Dielectric (ILD) is deposited.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: September 17, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Wing kei Au, Albert H. Liu
  • Patent number: 6360754
    Abstract: The present invention is a method of suppressing etchrate of quartz hardware in semiconductor processing chamber during plasma-enhanced cleaning. In one embodiment, the method of the present invention includes the steps of: (a) introducing a mixture of fluorocarbon gas, oxygen, and water vapor into the chamber; and (b) activating the mixture to form a quartz-safe plasma cleaning gas. According to the present invention, the presence of water vapor substantially suppresses etching of quartz hardware. Etchrate of the polymer contaminants, however, is substantially unaffected. In one embodiment of the invention, the fluorocarbon gas includes CF4, and, water vapor is introduced at a rate of at least 60 standard cubic centimeters per minute (SCCM).
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: March 26, 2002
    Assignee: VLSI Technology, Inc.
    Inventors: Wing-kei Au, Ramiro Solis
  • Publication number: 20010010228
    Abstract: The present invention is a method of suppressing etchrate of quartz hardware in semiconductor processing chamber during plasma-enhanced cleaning. In one embodiment, the method of the present invention comprises the steps of: (a) introducing a mixture of fluorocarbon gas, oxygen, and water vapor into the chamber; and (b) activating the mixture to form a quartz-safe plasma cleaning gas. According to the present invention, the presence of water vapor substantially suppresses etching of quartz hardware. Etchrate of the polymer contaminants, however, is substantially unaffected. In one embodiment of the invention, the fluorocarbon gas comprises CF4, and, water vapor is introduced at a rate of at least 60 standard cubic centimeters per minute (SCCM).
    Type: Application
    Filed: March 16, 1998
    Publication date: August 2, 2001
    Applicant: VLSI TECHNOLOGY, INC.
    Inventors: WING-KEI AU, RAMIRO SOLIS