Patent ID: 6455356
Filing Date: 2002-09-24
Classification: H01L,Y10T

Abstract:
A method of making a package for an integrated circuit die comprising:providing a leadframe including a disposable metal frame, a metal die pad at a center of said frame and integrally connected to the frame, and a plurality of leads each having an inner end facing the die pad and an opposite outer end integrally connected to the frame, said die pad having a horizontal first surface, a horizontal second surface opposite the first surface, a horizontal peripheral third surface surrounding the second surface and vertically recessed from the second surface, and a vertical outer peripheral surface between the first surface and the third surface, and said leads each having a horizontal first surface, a horizontal second surface opposite the first surface, and a horizontal third surface, said third surface being laterally adjacent to and vertically recessed from the second surface and opposite another portion of the first surface of the lead; placing an integrated circuit die on the first surface of the die pad; electrically connecting the integrated circuit die to the first surface of each lead; applying an encapsulant material so that the integrated circuit die and the first surface and the third surface of the die pad and the leads are covered by the encapsulant material, but the second surface of the leads is exposed; and severing the die pad and the leads from the frame so as to detach the package from the frame, wherein the second surface of each lead is exposed in a horizontal plane of a first exterior surface of the package.