Patent ID: 6284121
Filing Date: 2001-09-04
Classification: C25D,H05K

Abstract:
A system for electroplating a metal onto a surface, the surface having features, the system comprising:a bath container filled with a solution containing ions of the metal to be deposited, the surface disposed within the bath container and submerged in the solution, wherein the surface serves as a cathode;an anode disposed within bath container and submerged in the solution; anda current source coupled to the anode and the surface, wherein the current source causes ions of the metal to be deposited onto the surface causing the features to be filled with the metal,wherein the solution includes an additive comprising molecules having a size about equal to or larger than the features' size so that substantially no molecules of the additive enter the features, the molecules of the additive inhibiting deposition of the metal onto portions of the surface that are accessible to the molecules.