Patent ID: 7829985

Claim:
A method of fabricating a ball grid array (BGA) package having a half-etched bonding pad and a cut plating line, comprising the steps of: providing a substrate having a first external layer, a second external layer, and an insulating layer interposed between the first and the second external layers; forming a through hole for electrically connecting the first and the second external layers therethrough; forming a first pattern having a first circuit pattern and a wire bonding pad pattern on the first external layer, and forming a second pattern having a second circuit pattern, a cut plating line pattern, and a solder ball pad pattern on the second external layer; applying solder resists on the first and the second external layers, and half-etching the solder ball pad pattern of the second external layer; and gold-plating the wire bonding pad pattern of the first external layer and forming an uneven solder ball pad from the solder ball pad pattern of the second external layer to surface-treat a resulting structure.