Patent ID: 6733642
Filing Date: 2004-05-11
Classification: C23C,H01J

Abstract:
A system for sputter coating a film of material onto a substrate, comprising:a) an array including first and second unbalanced magnetrons having the same north and south magnetic polarities and being arranged in mirror configuration defining a space for receiving said substrate therebetween such that like poles are opposed, each of said magnetrons including an electrode target formed of said material; b) a first alternating current and voltage power source electrically connected to said first and second electrode targets for alternatingly energizing said targets as cathodes and anodes; and c) third and fourth unbalanced magnetrons like said first and second magnetrons, said four magnetrons being arranged in a square surrounding said space for receiving said substrate, and a second alternating current and voltage source being electrically connected to said third and fourth electrode targets for alternatingly energizing said targets as cathodes and anodes, said four unbalanced magnetrons cooperating to form a high ion density plasma surrounding said substrate without magnetic coupling between any of said magnetrons in said array.