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Combined plasma/liquid cleaning of substrates

United States Patent

April 15, 2003
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Apparatus and method for cleaning substrates. A substrate is held and rotated by a chuck and an atmospheric pressure plasma jet places a plasma onto predetermined areas of the substrate. Subsequently liquid rinse is sprayed onto the predetermined areas. In one embodiment, a nozzle sprays a gas onto the predetermined areas to assist in drying the predetermined areas when needed.
Selwyn; Gary S. (Los Alamos, NM), Henins; Ivars (Los Alamos, NM)
The Regents of the University of California (Los Alamos, NM)
09/ 803,065
March 8, 2001
The present invention generally relates to the cleaning of substrates in the manufacture of electronic circuits, and more specifically to the cleaning of metallic films from substrates. This invention was made with Government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.