Patent ID: 8628636

Claim:
A method of manufacturing a package substrate, comprising: providing two core layers, each of which having a first surface and a second surface opposing the first surface; connecting the two core layers in a manner that the second surfaces of the two core layers are connected by a connection member; forming a first circuit layer on the first surface of each of the core layers; forming a first insulating protection layer on the first surface and the first circuit layer of each of the core layers, with a portion of the first circuit layer exposed from the first insulating protection layer; combining a carrier member with each of the first insulating protection layers by an adhesive layer; removing the connection member to form two substrate bodies, each of which being constituted by the core layer, the first circuit layer, the first insulating protection layer and the carrier member; connecting the carrier members of the two substrate bodies by a combining member, such that the combining member combines the two substrate bodies and the second surface of each of the core layers is exposed; forming a plurality of through holes penetrating each of the core layers from the second surface thereof, with the first circuit layers exposed from the through holes; forming a second circuit layer on the second surface of each of the core layers, and forming in each of the through holes a conductive via electrically connecting the first and second circuit layers; forming a second insulating protection layer on the second circuit layer and the second surface of each of the core layer, with a portion of the second circuit layer exposed from the second insulating protection layer; and removing the combining member to form two package substrates, each of which being constituted by the core layer, the first and second circuit layers, the first and second insulating protection layers, and the carrier member.