An adhesive membrane comprises (a) a conductor; (b) a composite material comprising conductive particles at least partially embedded in an electrically insulating layer disposed on the conductor; and (c) a pressure sensitive adhesive layer disposed on the composite material, the conductive particles...http://www.google.de/patents/US7468199?utm_source=gb-gplus-sharePatent US7468199 - Adhesive membrane for force switches and sensors
