Patents by Inventor Dominic Frank Truchetta

Dominic Frank Truchetta 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: 7030035
    Abstract: To remove unwanted electrostatic charge from a substrate or substrate clamping mechanism in a plasma processing chamber following the plasma processing of the substrate, the process of shutting down the RF power supply is altered. Specifically, the present invention is a stepped RF power shut down sequence in which the RF power is lowered in a first step from full power to approximately 5 to 10 watts for a short period of time, such as approximately 1 second, and thereafter the RF power is turned off. As a result of this RF power shut down sequence, with its intermediate step, the plasma during the intermediate step acts to neutralize or discharge the electrostatic charge that has built up upon the wafer and/or clamping mechanism during full power operation. When the electrostatic charge has been removed, the wafer sticking problem is resolved.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: April 18, 2006
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Donald G. Allen, Richard Jule Contreras, Michael Feldbaum, Dominic Frank Truchetta