Patent ID: 8101052
Filing Date: 2012-01-24
Classification: C25D

Abstract:
1. A wet processing apparatus comprising: a movable carrier head assembly for holding a wafer or substrate; a cell for confining a chemical; an anode having an adjustable shape disposed in the cell, the anode formed by at least two plates which are movable relative to one another for changing the shape of the anode; and an assembly for moving one of the at least two plates relative to the other one of the at least two plates, the assembly including a movable hub member and two or more arm members extending from the hub member, the two or more arm members connected to the at least two plates; wherein a space is formed between a wafer or substrate held by the carrier head assembly and the anode, the space having a height which can be selectively varied across the wafer or substrate by adjusting the shape of the anode.