Patent ID: 8158532

Claim:
A method of forming a metal structure, comprising steps of: (a) providing a substrate having a base layer and a substrate surface, said base layer including a wide feature cavity and a field, said wide feature cavity defining a wide-feature region, said field being adjacent to said wide feature cavity and defining a field region; (b) exposing said substrate to a deposition accelerator so that both the field region and the wide-feature region are exposed to the deposition accelerator, without simultaneously depositing metal; (c) ceasing exposing said substrate to a deposition accelerator; (d) selectively removing at least a portion of said deposition accelerator from said field region using a spacially selective electrochemical reaction; (e) then after all of steps (b), (c) and (d), exposing said substrate to a metal deposition solution; (f) then conducting a wide-feature metal deposition, wherein said deposition accelerator increases a rate of metal deposition in said wide-feature region relative to a rate of metal deposition in said field region.