Patent ID: 6812575
Filing Date: 2004-11-02
Classification: H01L

Abstract:
A semiconductor device comprising:a substrate; a first semiconductor chip on said substrate; a second semiconductor chip overlying said first semiconductor chip; a wiring layer between said first and second semiconductor chips, said wiring layer including a polyimide tape having a copper foil layer between layers of said polyimide tape; a plurality of bonding pads on said wiring layer, said substrate and said first and second semiconductor chips; and a plurality of bonding wires for connecting said plural bonding pads to each other, wherein said copper foil layer traverses said wiring layer from a first bonding pad on said wiring layer to a second bonding pad on said wiring layer, wherein said copper foil is connected to said substrate through a first bonding wire only at said first bonding pad, and wherein said copper foil is connected to said second semiconductor chip through a second bonding wire only at said second bonding pad.