Patent ID: 8236160
Filing Date: 2012-08-07
Classification: C25D,H01L,Y10T

Abstract:
1. A method of processing a workpiece comprising an upper surface, a field region defined by the upper surface, a cavity having a depth below the upper surface and having a width, and a second cavity having a second depth below the upper surface and having a second width, the width being greater than the depth, the second depth being greater than the second width, the method comprising: electroplating a conductive material to form a layer of the conductive material in the field region and to form a bump of the conductive material above the cavity and the layer, wherein electroplating the conductive material forms a second bump of the conductive material above the second cavity; forming an additive differential between the cavity and the second cavity using a sweeper mechanism, wherein a thickness of the bump above the upper surface is greater than a thickness of the second bump above the upper surface; and after electroplating the conductive material, removing the layer, wherein, after completing removing the layer, the conductive material fills the cavity without dishing.