Patent ID: 8007633
Filing Date: 2011-08-30
Classification: H01J,Y10T

Abstract:
1. A surface processing apparatus comprising: a reaction container in which plasma is generated and in which an object having a surface to be processed by the plasma is placed; and a magnet plate, provided in said reaction container, for generating point cusp magnetic fields distributed in space in said reaction chamber in which the plasma is generated, said magnet plate including a plurality of magnets arranged on a circular surface thereof to be opposed parallel with the surface to be processed, said magnets having magnetic pole end surfaces at ends remote from said magnetic plate, respectively, disposed at lattice points forming regular hexagonal shapes on the circular surface, wherein polarities of adjacent magnetic pole end surfaces of said magnets are opposite to each other, wherein polarities of the magnetic pole end surfaces of said magnets disposed at diagonal lattice points of respective regular hexagonal shapes are opposite to each other, and wherein adjacent a peripheral portion of said magnet plate, first rows of said magnets having said magnetic pole end surfaces of a first magnetic polarity and second rows of said magnets having said magnetic pole end surfaces of a second magnetic polarity which is opposite to the first magnetic polarity, generally constitute a hexagonal shape as a whole.