Patent ID: 6881270
Filing Date: 2005-04-19
Classification: C23C,H01J

Abstract:
1. An electrode arrangement for the plasma-aided coating of a substrate with a layer, comprising: at least a first and a second material component which produces a plasma discharge; an anode arrangement which defines said first material component at an anode material surface for evaporation; a cathode arrangement which defines said second material component at a cathode material surface, said cathode material surface being constituted by an evaporation-active part supporting the plasma discharge and an evaporation-inactive part not supporting the plasma discharge; a gas supply for supplying protective gas in front of thc cathode material surface to the evaporation-active part or thc cathode material surface; and a baffle arrangement exposing said evaporation-active part at a baffle opening for the plasma discharge and shading of the evaporation-inactive part correspondingly from the plasma discharge; wherein said protective gas is so introduced into an intermediate space between the baffle arrangement and the cathode material sure that said supplied protective gas escapes at least partially through the baffle opening towards the plasma discharge from the intermediate space between the cathode material surface and the baffle arrangement.