Patent ID: 6610190
Filing Date: 2003-08-26
Classification: C25D,H01L

Abstract:
A system for depositing materials on a surface of a wafer having a lateral dimension, comprising:a cavity defined by a peripheral wall terminating at a peripheral edge and having at least one lateral dimension smaller than the wafer lateral dimension and at least one dimension larger than the wafer lateral dimension and configured to hold an electrolyte proximate to the peripheral edge such that the electrolyte will always contact a first wafer surface region; a head configured to hold the wafer above the cavity peripheral edge so that the surface of the wafer faces the cavity; an anode disposed in the cavity; and an electrical contact member positioned outside the cavity peripheral wall and configured to contact a second wafer surface region where the lateral dimension of the cavity is smaller than the wafer lateral dimension and to maintain electrical contact with the wafer when the wafer is moved relative to the contact member.