US Patent 7923846 Integrated circuit package-in-package system with wire-in-film encapsulant

A multiple encapsulation integrated circuit package-in-package system includes: dicing a top integrated circuit wafer having a bottom encapsulant thereon to form a top integrated circuit die with the bottom encapsulant; positioning internal leadfingers adjacent and connected to a bottom integrated circuit die; pressing the bottom encapsulant on to the bottom integrated circuit die; connecting the top integrated circuit die to external leadfingers adjacent the internal leadfingers; and forming a top encapsulant over the top integrated circuit die.