Patent ID: 7877873

Claim:
A method for forming a wire bonding substrate, comprising: providing a substrate, comprising a first surface and a second surface; forming a through hole in the substrate; forming a conductive layer on the first surface and the second surface of the substrate and covering a sidewall of the through hole; patterning the conductive layer on the first surface of the substrate to form at least a first conductive pad, and patterning the conductive layer on the second surface of the substrate to form at least a second conductive pad; forming an insulating layer on the first surface and the second surface of the substrate and covering the first conductive pad and the second conductive pad; recessing the insulating layer until top surfaces of the first conductive pad and the second conductive pad are exposed; and electroplating a first metal layer on the first conductive pad by applying current from the second conductive pad to the first conductive pad through the conductive layer passing the through hole.