Patent ID: 6352627
Filing Date: 2002-03-05
Classification: C23C,H01J

Abstract:
PVD coating device comprising an evacuable chamber,at least one gas feed connection, at least one target cathode, which is exposed to a sputtering process, at least one anode, and at least one substrate holder which is intended to hold at least one substrate and is electrically connected to each held substrate, a control device which has a first voltage output connected between the at least one target cathode and the at least one anode to deliver a first voltage in order to supply the at least one target cathode with a negative electrical potential relative to the at least one anode in order to form a plasma in which the at least one substrate is arranged, a second voltage output connected between the at least one anode and a chamber wall to deliver a second voltage in order to supply the at least one anode with a positive electrical potential relative to the chamber wall, and a third voltage output including a first pole connected to the at least one substrate and a second pole connected to the at least one anode to deliver a third voltage which supplies the at least one substrate with an electrical potential that is more negative than the potential of the at least one anode, and wherein the anode connections of each of the voltage outputs are points of equal potential.