Patent ID: 8172989
Filing Date: 2012-05-08
Classification: C25D

Abstract:
1. An apparatus for plating a surface of a substrate, comprising: a double wall plating vessel including an inner cup and an outer cup peripherally surrounding and spaced apart from the inner cup, the inner cup having an inlet for receiving a plating solution and an outlet from which the plating solution overflows into a plenum defined between the inner and outer cups; a plurality of supports for supporting the substrate at a predetermined position proximal to the outlet of the inner cup so that the plating solution flowing from the outlet into the plenum passes over and uniformly plates the surface of the substrate; an air-knife including a stream of gas directed to flow past a peripheral edge of the substrate positioned on the plurality of supports and towards the plenum; and a plurality of ports located proximal to the outlet of the inner cup and oriented to direct streams of gas into the plenum, redirecting plating solution away from the edge of the substrate.