Patent ID: 7179682
Filing Date: 2007-02-20
Classification: H01L

Abstract:
1. A method of packaging an integrated circuit die, comprising the steps of: loading a plurality of conductive balls into recesses formed in a platen; transferring the platen to a cavity of a first part of a mold; pressing a second part of the mold against the conductive balls, thereby closing the mold and at least partially flattening a top surface of the conductive balls; injecting a first mold compound into the mold, wherein the first mold compound surrounds exposed portions of the conductive balls and holds the conductive balls together; removing the second part of the mold to expose the top surface of the conductive balls; attaching a first side of an integrated circuit die to a plurality of the conductive balls, wherein the die is surrounded by others of the conductive balls; electrically connecting die bonding pads on a second side of the die to respective ones of the conductive balls surrounding the die; and encapsulating at least the second side of the die, the electrical connections, and at least part of the top surface of the conductive balls with a second mold compound.