Patent ID: 8385073
Filing Date: 2013-02-26
Classification: H01L,Y10T

Abstract:
1. A folded system-in-package assembly, comprising: a top circuit board module having a first side and a second side and including one or more active electrical components, wherein the top circuit board module includes a substrate having a plurality of thermal vias that extend therethrough from the first side to the second side of the top circuit board module; a bottom circuit board module having a first side and a second side and including one or more active electrical components, wherein the active electrical components of one or both of the top and bottom circuit board modules form one or more high density logic circuits, wherein a majority of the high density logic circuits are located on the first side of the top circuit board module, wherein the thermal vias make thermal contact with the one or more high density logic circuits of the top circuit board module, and wherein the top circuit board module is stacked relative to the bottom circuit board module such that the first side of the top circuit board module and the first side of the bottom circuit board module face each other in an opposing manner; a flex circuit electrically interconnecting the top and bottom circuit board modules; and a heat spreader thermally coupled to the second side of the top circuit board module, wherein the plurality of thermal vias are thermally coupled to the heat spreader, wherein the heat spreader comprises a folded metal layer that extends from the second side of the top circuit board module to the second side of the bottom circuit board module, and wherein the heat spreader covers at least a substantial majority of the second side of the top circuit board module and the second side of the bottom circuit board module.