Patents by Inventor Allison Deen

Allison Deen 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: 6585567
    Abstract: A short CMP polish process is provided which removes minimal amounts of oxide and reduces defectivity at the surface of the wafer during short periods of rework by maintaining a high pH at the wafer surface in the presence of a high pH slurry. In one embodiment of the present inventions, the first platen of a multi-platen CMP machine is skipped for polishes of a short duration. In a second embodiment, a large amount of slurry is used to prime the second polish platen, thus displacing deionized water at the surface of the wafer which would ordinarily lower the initial pH of the process. Additionally, downforce may be minimized to reduce defectivity.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: July 1, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Andrew J. Black, Allison Deen