Cleaning and liquid contact with solids – Processes – With work or work parts movable during treatment
Patent
1997-07-15
1999-11-09
Warden, Jill
Cleaning and liquid contact with solids
Processes
With work or work parts movable during treatment
134 6, 134 34, 134153, B08B 704
Patent
active
059806478
ABSTRACT:
A megasonic liquid stream semiconductor wafer cleaning apparatus and method uniformly removes debris from all points on the surface of a semiconductor wafer. The wafer is rotated about a proscribed axis while the means for producing focused megasonic waves and a liquid stream of cleaning fluid is focused on the wafer so as to apply sufficient energy to clean the wafer yet not cause damage to the electronic circuity embedded in the wafer. A method is provided for moving the outlet port providing the stream of megasonic cleaning fluid across the wafer so that the amount of energy applied to any area of the wafer is relatively constant.
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Buker Edward D.
Conrad Edward W.
Leas James M.
International Business Machines - Corporation
Kotulak Richard M.
Warden Jill
Wilkins Yolanda E.
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