Patent ID: 8863379

Claim:
A method of manufacturing a printed circuit board comprising: providing a core subassembly comprising at least one metal layer carrier; providing a plurality of one-metal layer carriers after parallel processing each of the plurality of one-metal layer carriers, wherein the parallel processing of at least one of the plurality of one-metal layer carriers comprises: imaging photo resist onto at least one part of a substrate having at least one copper foil formed on a first surface of the substrate; etching portions of the at least one copper foil from the substrate; removing the at least one photo resist to expose the at least one part of the at least one copper foil thereby forming at least one copper foil pad; applying a lamination adhesive to a second surface of the substrate; applying a protective film to the lamination adhesive; forming at least one micro via in the second surface of the substrate to expose the at least one copper foil pad; filling conductive paste into the at least one micro via; and removing the protective film to expose the lamination adhesive on the substrate for attachment; and attaching at least two of the plurality of one-metal layer carriers with each other and with the core subassembly, wherein the substrate comprises a rigid substrate.