Magnetically enhanced plasma process and apparatus

H - Electricity – 01 – L

Patent

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Details

204/96.05, 204/1

H01L 21/306 (2006.01) C23F 4/00 (2006.01) H01J 37/32 (2006.01) H01J 37/34 (2006.01)

Patent

CA 1196599

ABSTRACT The efficiency of plasma etching can be increased several-fold by providing a confining magnetic field (45) close to a substrate support electrode (24). The electrode has a prismatic body (31) with at least two flat faces. Magnetic pole pieces (41, 43) of opposite polarity project beyond the faces at opposite ends of the body and extend completely around the body. The pole pieces create a magnetic field that extends parallel to the flat faces and surrounds the body like a belt.

420148

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