Patent ID: 8510940

Claim:
A method of fabricating a multi-trace via substrate, comprising: providing a substrate at least having a first surface and a hole, wherein the hole has a hole wall; forming a first conductive layer on the entire surface of the substrate and the hole wall; applying a photoresist layer over the entire surface of the first conductive layer, and selectively patterning photoresist layer so as to define a plurality of laterally separated regions on the first conductive layer extended from the first surface to the hole wall; using the patterned photoresist layer as a mask and electroplating a second conductive layer substantially thicker than the first conductive layer on the laterally separated regions; removing the patterned photoresist layer; and substantially removing the portion of the first conductive layer not covered by the second conductive layer to form a plurality of laterally separated traces extended on the first surface and through the hole.