Patent ID: RE44438

Claim:
A method of making a semiconductor device, comprising: providing a first substrate having a central region; forming first bumps around a periphery of the central region of the first substrate; mounting a first semiconductor die to the central region of the first substrate; mounting an active surface of the second semiconductor die to the first semiconductor die over the central region of the first substrate, wherein a height of the first and second semiconductor die is less than or equal to a height of the first bumps; providing a second substrate having thermal conduction channels and a conductive plane, the thermal conduction channels disposed entirely within a central region of the second substrate, the thermal conduction channels including a horizontal channel disposed on a first surface of the second substrate and vertical channels disposed through the second substrate to contact the horizontal channel and the conductive plane, the conductive plane disposed on a second surface of the second substrate and spanning across a width of the central region of the second substrate; mounting a back surface of the second semiconductor die that is opposite the active surface of the second semiconductor die to the horizontal channel of the second substrate with a thermal interface material; electrically connecting first contact pads disposed on the first substrate to second contact pads disposed on an active surface of the second semiconductor die using second bumps disposed between the first contact pads and second contact pads; and electrically connecting the first bumps to third contact pads disposed outside the central region and on the first surface of the second substrate.