Patent ID: 7025866
Filing Date: 2006-04-11
Classification: C25D,H01L

Abstract:
1. A method of forming a microelectronic workpiece for electrochemical deposition processing, comprising: depositing a first conductive material on the workpiece to form an electrically conductive contact layer that conforms to submicron recesses in the workpiece; disposing a second conductive material on at least a substantial portion of the contact layer to form a conformal and continuous seed layer; forming a contact region around a perimeter of the workpiece by removing the second conductive material from a perimeter region around the workpiece to expose the first conductive material in a perimeter band, the contact region being an exposed portion of the contact layer extending radially inwardly from an edge of the workpiece; and electroplating additional material onto the continuous seed layer by engaging an electrical contact directly with the contact region, contacting the continuous seed layer with an electrochemical solution, and applying a current directly to the contact region.