Patent ID: 8956512
Filing Date: 2015-02-17
Classification: C23C,H01J

Abstract:
1. A magnetron sputtering apparatus in which a target is disposed opposite to a substrate to be processed mounted in a vacuum chamber and magnet members are disposed on a back surface of the target, the apparatus comprising: a power supply unit configured to apply a voltage to the target; a plurality of magnetic pole array sets, each of which includes an outer ring-shaped magnetic pole array formed of magnetic poles arranged in a circumferential direction of the substrate and an inner ring-shaped magnetic pole array formed of magnetic poles arranged in the circumferential direction of the substrate inwardly of the outer ring-shaped magnetic pole array, arranged concentrically with each other, each of the magnetic pole array sets serving to generate a cusp magnetic field between the outer and the inner ring-shaped magnetic pole array and allow electrons to drift in the circumferential direction of the substrate; an operating unit configured to move the inner and/or the outer ring-shaped magnetic pole array of each of the magnetic pole array sets to temporally switch the magnetic pole array set which generates the cusp magnetic field; and a rotation unit configured to rotate the magnetic pole array sets along the circumferential direction of the substrate.