Patent ID: 7435323
Filing Date: 2008-10-14
Classification: C25D,C25F,H01L,Y10S

Abstract:
1. A process for controlling thickness uniformity during deposition of a conductive material from an electrolyte onto a surface of a substrate using an anode and a conductive element attached to a mask having openings, the process comprising: placing the surface close to the conductive element of the mask; contacting the anode with the electrolyte; providing a supply of the electrolyte to the surface and the conductive element, the openings in the mask partially exposing the conductive element to the surface; maintaining a potential difference between the anode and the surface; applying at least one potential to the conductive element to vary a rate of conductive material deposition onto the surface; establishing a relative motion between the substrate and the mask; and sweeping the surface of the substrate with the mask.