H - Electricity – 01 – L
Patent
H - Electricity
01
L
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
Class Walter H.
Hill Michael L.
Hurwitt Steven D.
Hutt Marvin K.
Fetherstonhaugh & Co.
Tokyo Electron Limited
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