Patent ID: 6426290
Filing Date: 2002-07-30
Classification: H01L,H05K

Abstract:
A method of electroplating a dual-sided workpiece, which method comprises the sequential steps of:(a) providing a workpiece comprising an insulative substrate including first and second of opposed major surfaces, with at least one electrically conductive trace formed on each of said first and second major surfaces, said at least one electrically conductive trace on said first major surface being electrically interconnected to said at least one electrically conductive trace on said second major surface; (b) covering said at least one electrically conductive trace on said first major surface of said substrate with a first layer of electrically conductive material in electrical contact therewith; (c) applying an electrical potential to said first layer of electrically conductive material to effect electroplating on said at least one electrically conductive trace on said second major surface; (d) removing said first layer of electrically conductive material from said first major surface of said substrate; (e) covering said at least one electrically conductive trace oil said second major surface with a second layer of electrically conductive material in electrical contact therewith; (f) applying an electrical potential to said second layer of electrically conductive material to effect electroplating on said at least one electrically conductive trace on said first major surface; and (g) removing said second layer of electrically conductive material from said second major surface of said substrate.