Patent ID: 7518227

Claim:
An apparatus for forming an interposer located between a first semiconductor device and a second semiconductor device, the first semiconductor device having a plurality of bond pads on an active surface thereof and the second semiconductor device having a plurality of bond pads on an active surface thereof and a bottom surface, the apparatus comprising: a substrate having a first surface having a first length and a first width about the same as a second surface of the second semiconductor device and a second surface having a length and a width smaller than the first width of the first surface for attachment to the active surface of the first semiconductor device, the first surface comprising an overhang portion of the substrate for protecting the plurality of bond pads disposed on the first semiconductor device and the second surface being mountable to the active surface of the first semiconductor device, the substrate having one of either a coefficient of thermal expansion substantially the same as the first semiconductor device, or at least one conductive strip for connection to at least one bond pad of the plurality of bond pads of the first semiconductor device or formed of material providing electrical insulation between the first semiconductor device and the second semiconductor device.