Patent ID: 6534344
Filing Date: 2003-03-18
Classification: H01L

Abstract:
A method of fabricating an integrated circuit chip, comprising:(a) forming a circuit board unit with a bore, a plurality of contact pads on a top surface of the circuit board unit, and a plurality of positioning notches that are disposed on opposite side portions of the circuit board unit And that correspond respectively to the contact pads; (b) forming a die having an upper surface provided with a plurality of solder pads; (c) attaching the die onto a bottom surface of the circuit board unit such that the solder pads on the die are exposed via the bore in the circuit board unit; (d) wire-bonding the solder pads to the contact pads by means of conductive wires that extend through the bore; (e) inserting one end of each of a plurality of leads of a lead frame into a respective one of the positioning notches, and bonding the leads on the lead frame onto corresponding ones of the contact pads adjacent to the opposite side portions of the circuit board unit via a conductive contact layer; and (f) forming a plastic protective layer to encapsulate the circuit board unit and at least a portion of the lead frame.