Patent ID: 7229907

Claim:
A method of forming a multiple-layer structure on a workpiece with a circuit component extending through the structure, the method comprising the steps of: forming a first layer of the circuit component by: a) depositing a dielectric material onto the workpiece, b) etching a pattern through the dielectric material to expose a surface beneath the dielectric material, c) depositing a barrier metal over the dielectric material and the exposed surface, d) depositing a conductive metal over the barrier metal, the deposited conductive metal having a thickness sufficient to fill the etched pattern, e) planarizing the conductive metal to form a planar metal layer over the barrier metal, and f) polishing the metal layer and the barrier metal in a single polishing step until the dielectric material surrounding the filled pattern is exposed; and forming a plurality of additional layers over the first layer by repeating steps a) through f) to produce the multiple-layer structure with the circuit component formed of connected filled patterns from each of the multiple layers.