Patent ID: 8575558

Claim:
A method for forming a sensor stack, comprising: providing a substrate having a first side and a second side; disposing an integrated circuit having a first side and a second side on the first side of the substrate, wherein the integrated circuit comprises a first plurality of contact pads disposed on the first side of the integrated circuit; providing a sensor array having a plurality of sensor elements, wherein each of the sensor elements has a first side and a second side, and wherein the sensor array comprises a second plurality of contact pads disposed on a second side of the sensor array; disposing an interposer having one or more interposer elements and one or more through vias disposed therethrough between the one or more sensor elements of the sensor array and the integrated circuit to raise the sensor array away from the first side of the integrated circuit such that a plane of the one or more sensor elements is locally normal to a sensor stack normal, wherein the interposer is configured to couple the second side of the sensor elements in the sensor array to the first side of the integrated circuit; and operationally coupling the first plurality of contact pads on the first side of the integrated circuit to the second plurality of contact pads on the second side of the sensor array to form a tileable sensor stack.