Patent ID: 8157970
Filing Date: 2012-04-17
Classification: C23C,H01J

Abstract:
1. A method of sputter deposition, comprising: providing a fixed sputter target comprising an electrically conductive and non-magnetic backing plate and a sputter target plate attached to said backing plate, said sputter target plate having a back surface and an exposed front surface; providing a rotatable and circular array of magnets configured as a source of magnetic field lines, said magnetic field lines extending through said sputter target plate from said back surface to said exposed front surface of said sputter target plate, said backing plate positioned between said array of magnets and said sputter target plate, said array of magnets rotatable relative to said sputter target; providing one or more pole extenders between said array of magnets and said exposed front surface of said sputter target plate, said one or more pole extenders configured to pass through magnetic poles of said magnetic field lines as said array of magnets is rotated, said one or more pole extenders are contained within said backing plate.