Patent ID: 8485120
Filing Date: 2013-07-16
Classification: C23C,H01L

Abstract:
1. A semiconductor wafer electroless plating apparatus, comprising: a platen having a top surface defined to support a wafer, the platen including an outer surface extending downward from a periphery of the top surface to a lower surface of the platen, wherein the platen is configured to be raised and lowered; a fluid bowl having an inner volume defined by an interior surface, the fluid bowl configured to receive the platen and wafer to be supported thereon within the inner volume; a seal disposed around the interior surface of the fluid bowl so as to form a liquid tight barrier when the platen is lowered to engage the seal between the interior surface of the fluid bowl and the outer surface of the platen; and a number of fluid dispense nozzles positioned above the seal and below the top surface of the platen when the platen is lowered to engage the seal, wherein the number of fluid dispense nozzles are defined to dispense electroplating solution within a space between the interior surface of the fluid bowl and the outer surface of the platen when the platen is lowered to engage the seal, wherein the space between the interior surface of the fluid bowl and the outer surface of the platen and above the seal is open to a volume overlying the platen, and wherein the number of fluid dispense nozzles are positioned to dispense the electroplating solution at a number of respective locations about a periphery of the fluid bowl above the seal.