Patent ID: 6506629
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A method of making an integrated circuit (IC) package including an IC die having a first side and a second side, the method comprising:providing a lead frame including a plurality of leads, said plurality of leads having an enclosable portion for enclosure within the IC package; providing an electrically conductive heat sink having an enclosable portion to be located at least partially within the IC package, the heat sink having a surface having a first portion thereof facing portions of the lead frame located adjacent thereto, the heat sink having a substantial part of the enclosable portion of each lead of the plurality of leads of the lead frame located adjacent the surface of the first portion of the heat sink, the heat sink having a die-attach area on the surface of the first portion of the heat sink for attachment to the IC die, and the heat sink having a second portion thereof projecting away from the first portion of the heat sink under the die-attach area; attaching at least a portion of the second side of the IC die to at least a portion of the die-attach area on the surface of the first portion of the heat sink; attaching at least a portion of the lead frame to at least a portion of the surface of the first portion of the heat sink, the electrically conductive heat sink positioned having the die-attach area on the surface of a first portion of the heat sink, said first portion of the heat sink extending beneath a substantial part of the enclosable portion of said plurality of leads of the lead frame in close proximity to said enclosable portions of said plurality of leads, said first portion of the heat sink extending beneath at least eighty percent of an area formed by the enclosable portions of said plurality of leads; connecting the enclosable portions of said plurality of the leads of the lead frame to the IC die; and enclosing the enclosable portions of said plurality of leads of the lead frame, the IC die, and the enclosable portion of the heat sink in the IC package.