Patent ID: 7342305

Claim:
A cavity-down ball grid array package comprising: a flexible circuit tape including a flexible tape laminated to a conductor layer, the flexible circuit tape having an aperture therein: a thermally conductive heat spreader directly fixed to a first surface of the flexible circuit tape, the heat spreader having a cavity aligned with the aperture of the flexible circuit tape; a semiconductor die mounted to the heat spreader, configured to be attached to a printed circuit board, and positioned in a die-down configuration in said cavity; a thermally conductive die adapter fixed to said semiconductor die such that a portion of said die adapter protrudes from said cavity; a plurality of wire bonds connecting said semiconductor die to bond sites on said second surface of said flexible circuit tape; an encapsulating material encapsulating said semiconductor die and said wire bonds; and a plurality of solder balls disposed on a second surface of the flexible circuit tape, in the form of a ball grid array, wherein the die adapter is comprised of one of silicon and silicon coated with a solderable layer, and wherein said thermally conductive die adapter comprises a plurality of thermally conductive die adapter portions stacked on said semiconductor die, and wherein the plurality of thermally conductive die adapter portions are fixed to one another using a non-electrically conductive adhesive.