Patent ID: 7350298

Claim:
A method for fabricating a circuit board with a conductive structure, comprising the steps of: providing a circuit board with first and second surfaces, the first surface of the circuit board having a plurality of first and second electrically connecting pads, and the second surface having a plurality of third electrically connecting pads, and, moreover, forming first and second insulating protective layers respectively on the first and second surfaces, and forming a plurality of openings to expose the first, second, and third electrically connecting pads; forming a conductive layer on the surfaces of the first insulating protective layer and the openings, electrically connected to the first and second electrically connecting pads on the first surface of the circuit board; forming first and second resist layers on the surfaces of the conductive layer and the second insulating protective layer respectively, and forming a plurality of openings in the first resist layer to expose the conductive layer on the first and second electrically connecting pads on the first surface; forming first electrically connecting structures by electroplating on the exposed conductive layer over the first and second electrically connecting pads in the openings of the first resist layer; removing the first and the second resist layers and the conductive layer covered by the first resist layer; and forming second electrically connecting structures by stencil printing on the conductive layer over the second electrically connecting pads on the first surface of the circuit board and on the third electrically connecting pads of the second surface of the circuit board.