Patent ID: 7585419

Claim:
A fabrication method of a package substrate structure comprising the following steps: providing a laminate comprising at least a adhesive layer and at least a conductive layer sequentially arranged on a surface of said laminate from bottom to top; respectively forming a patterned film on said conductive layer and a film under said laminate; using said patterned film as a mask to penetrate through said adhesive layer and said conductive layer to form a patterned trench; removing said patterned film and said film; filling at least a insulator on said conductive layer to fill up said patterned trench; forming at least a copper on said insulator; forming a plurality of concave holes penetrating through a portion of said copper and a portion of said insulator to expose a portion of said conductive layer; forming a plurality of conduction layers around in said concave holes; and removing said laminate.