Patent ID: 7615407

Claim:
A method of packaging integrated circuit devices, comprising: providing an integrated circuit wafer, the wafer including a multiplicity of integrated circuit dice, each die having an active surface and a back surface, the active surface of each die including a first set of bond pads and a second set of bond pads, the back surfaces of the dice combining to form the back surface of the wafer; depositing a first conductive layer over the active surfaces of the dice; depositing a second conductive barrier layer over the first conductive layer; depositing a third solder-wettable conductive layer over the second conductive barrier layer; removing portions of the first conductive layer, second conductive barrier layer and third solder-wettable conductive layer that do not overlie the first set of bond pads or the second set of bond pads of each die; removing portions of the second conductive barrier layer and the third solder-wettable conductive layer that overlie the second set of bond pads of each die; depositing a layer of solder over portions of the third solder-wettable conductive layer that overlie the first set of bond pads of each die; positioning a non-active electrical component over the active surface of each die such that electrodes from the non-active electrical component are positioned adjacent solder deposited over ones of the first set of bond pads of the die; reflowing the solder to electrically and physically connect the electrodes of the non-active electrical component with the ones of the first set of bond pads.