Patent ID: 6348142
Filing Date: 2002-02-19
Classification: H01L,H05K

Abstract:
A method of electroplating a workpiece, which method comprises the sequential steps of:(a) providing a workpiece comprising an electrically insulative substrate including first and second opposed major surfaces bounded by a periphery, a plurality of spaced-apart, electrically conductive features forming a first circuit pattern on said first major surface, said first circuit pattern including a plurality of electrically conductive traces each extending toward a device mounting area of said first major surface and including a terminal end in the form of a bonding pad or finger adjacent said device mounting area, said first major surface further including thereon a single electrically conductive tie bar extending from said periphery of said substrate toward said device mounting area and including integrally formed lateral extensions in electrical contact with each of said bonding pads or fingers; (b) contacting at least said first major surface of said substrate with at least one electroplating bath while applying an electrical potential to said tie bar, and electroplating at least one layer on at least said first circuit pattern on said first major surface; and (c) severing the electrical contacts between said lateral extensions of said tie bar and each of said bonding pads or fingers.