Patent ID: 6695962
Filing Date: 2004-02-24
Classification: C25D,C25F,H01L

Abstract:
An assembly by which a solution can be supplied to a surface of a substrate for electrochemical deposition and removal, comprising:a housing defining an internal housing volume into which the solution can flow, a closure for said internal housing volume through which the solution can be discharged from said internal housing volume towards the surface of said substrate, and a filter by which said internal housing volume can be divided into a first chamber and a second chamber located between the first chamber and the closure, wherein, during supply of said solution to said surface, the solution flows through the filter, a flow of the solution into said second chamber occurs at a higher rate than a flow of the solution into said first chamber, and said flows are blended in said second chamber, wherein the filter is disposed so as to provide for effective removal of bubbles from the solution, and wherein said assembly includes at least one primary flow channel through which the solution can pass into said second chamber and at least one secondary flow channel through which the solution can pass into said first chamber.