Patent ID: 6196155
Filing Date: 2001-03-06
Classification: B08B,C23C,H01J

Abstract:
A plasma processing apparatus comprising:a plasma generating chamber including a substantially cylindrical side wall and a roof-plate to cover the upper part of said side wall, in which plasma is generated;a plurality of magnets, one group of said magnets being arranged on said roof-plate in concentric circles, with the polarity of each magnets in each circle being alternated, and the other group of said magnets being arranged around said side wall of said plasma generating chamber in rings, the polarity of each magnet in each ring being alternated, to form a cusped magnetic field to confine said plasma in said plasma generating chamber; andholding means which is provided in said plasma generating chamber, for holding a substrate to be processed with said plasma;wherein said group of said permanent magnets arranged on said roof-plate is rotatably held eccentric to the central axis of said plasma generating chamber, and said other group of said permanent magnets arranged around said side wall of said plasma generating chamber is movably held such that it can be moved up and down.