Patent ID: 7509881

Claim:
An interdigital electronic device comprising: (a) a conductor; (b) an interdigital electrode; and (c) a composite material disposed between the conductor and the interdigital electrode for electrically connecting the conductor and the interdigital electrode under application of sufficient pressure therebetween, the composite material comprising conductive particles at least partially embedded in an electrically insulating layer; the conductive particles having no relative orientation and being disposed so that substantially all electrical connections made between the conductor and the interdigital electrode are in the z direction, and the electrically insulating layer comprising an elastomeric material that has a substantially constant Gâ€² between about 0Â° C. and about 100Â° C. and being capable of returning to substantially its original dimensions on the release of pressure; wherein at least one of the conductor and the interdigital electrode is movable toward the other; and wherein the device is a force sensor.