In an embodiment, a package includes a first package structure including a first integrated circuit die having an active side and a back-side, the active side including die connectors, a second integrated circuit die adjacent the first integrated circuit die, the second integrated circuit die having an active side and a back-side, the active side including die connectors, a routing die including die connectors bonded to the active sides of the first integrated circuit die and the second integrated circuit die, the routing die electrically coupling the first integrated circuit die to the second integrated circuit die, an encapsulant encapsulating the first integrated circuit die, the second integrated circuit die, and the routing die, and a first redistribution structure on and electrically connected to the die connectors of the first integrated circuit die and the second integrated circuit die.

Various chip stack power delivery circuits are disclosed. In one aspect, an apparatus is provided that includes a stack of semiconductor chips that has an uppermost semiconductor chip and a lowermost semiconductor chip. A heat spreader is positioned on the uppermost semiconductor chip. A power transfer circuit is configured to transfer electric power from the heat spreader to the uppermost semiconductor chip.

Various chip stack power delivery circuits are disclosed. In one aspect, an apparatus is provided that includes a stack of semiconductor chips that has an uppermost semiconductor chip and a lowermost semiconductor chip. A heat spreader is positioned on the uppermost semiconductor chip. A power transfer circuit is configured to transfer electric power from the heat spreader to the uppermost semiconductor chip.

In an embodiment, a package includes a first package structure including a first integrated circuit die having an active side and a back-side, the active side including die connectors, a second integrated circuit die adjacent the first integrated circuit die, the second integrated circuit die having an active side and a back-side, the active side including die connectors, a routing die including die connectors bonded to the active sides of the first integrated circuit die and the second integrated circuit die, the routing die electrically coupling the first integrated circuit die to the second integrated circuit die, an encapsulant encapsulating the first integrated circuit die, the second integrated circuit die, and the routing die, and a first redistribution structure on and electrically connected to the die connectors of the first integrated circuit die and the second integrated circuit die.

A chip stack structure using conductive film bridge adhesive technology comprises a substrate, a first chip, at least one bridge element, a conductive film, and a second chip. The first chip is electrically connected to a first electrode of the substrate. The at least one bridge element has a first bridge surface and a second bridge surface at two ends, and the first bridge surface and the second bridge surface are electrically connected to the first chip and a second electrode of the substrate, respectively. The conductive film is electrically connected to the first bridge surface of the at least one bridge element. The second chip is stacked and electrically connected to the conductive film. Thus, the structure of the present invention not only facilitates the ease of stacking the chips but also increases the effectiveness of the chips heat dissipation and ability of withstanding electrical current.