Patent ID: 8008131
Filing Date: 2011-08-30
Classification: H01L

Abstract:
1. A method for assembling a semiconductor chip package comprising the steps of: providing a leadframe assembly, the leadframe assembly further comprising a metal leadframe, an attached heat spreader, and an attached semiconductor chip having bond pads, wherein the leadframe further comprises a plurality of leadfingers, each leadfinger having a proximal end for receiving one or more wirebond, the proximal ends of the leadfingers defining a plane parallel to a surface of the heat spreader, the leadfingers also having a distal end for electrical connection external to the package; while supporting the proximal ends of the leadfingers using a wirebonding cavity of a heat block, attaching a plurality of bondwires coupling a plurality of bond pads of the semiconductor chip to a plurality of proximal ends of leadfingers; and thereafter, using a spacing cavity of the heat block, adjusting the clearance between the wirebonded proximal ends of the leadfingers and the surface of the heat spreader.