Patent ID: 6428662
Filing Date: 2002-08-06
Classification: C25D

Abstract:
In a reactor for electrochemically processing a wafer, an apparatus for providing processing fluid for immersion processing of at least one surface of the wafer, comprising:a cup arranged in said reactor for providing processing fluid for contact with the at least one surface of the wafer, the cup having an inlet connected to receive a flow of the processing fluid, and an outlet in the form of a weir at an upper end of the cup; an overflow vessel disposed about the cup to receive processing fluid proceeding over the weir at the upper end of the cup, the overflow vessel having at least one upwardly oriented sidewall; an inwardly directed support member disposed at and in fixed positional alignment with the sidewall of the overflow vessel; and an outwardly directed support member disposed at and in fixed positional alignment with an exterior perimeter of the cup, the outwardly directed support member being positioned to removably cooperate with the inwardly directed support member to hold the cup level at a predetermined position within the overflow vessel.