Patent ID: 6074518
Filing Date: 2000-06-13
Classification: H01J

Abstract:
A plasma processing apparatus comprising:a chamber;a supporter having a first electrode provided in said chamber and supporting an object to be processed;a second electrode provided opposite to said first electrode and having the object supported by said supporter interposed, said first electrode and said second electrode defining a plasma generating region therebetween;means for supplying a process gas to the plasma generating region;RF power supply for supplying an RF power voltage to at least one of said first electrode and said second electrode and generating a plasma of the process gas in the plasma generating region, thereby performing a plasma process with respect to the object;a first magnet assembly arranged circumferential to said first electrode; anda second magnet assembly arranged opposite to said first magnet assembly at a predetermined distance from said first magnet assembly, and circumferential to said second electrode,said first magnet assembly and said second magnet assembly generating a magnetic field perpendicular to a surface of the object to be processed and generating a magnetic field such that the magnetic field encircles the plasma generating region, thereby enclosing the plasma in the plasma generating region,wherein said first magnet assembly and said second magnet assembly have a plurality of permanent magnets arranged in an annular form, permanent magnets of said first magnet assembly and permanent magnets of said second magnet assembly are the same in number and dimensions and correspond to each other in position, and surfaces of corresponding permanent magnets facing each other have different magnetic poles, andwherein the first and second magnet assemblies are disposed within the chamber.