An X electrode layer having X electrodes and a Y electrode layer having Y electrodes are formed on one side of a film board through an insulating film so that the X electrodes and the Y electrodes are arranged into a matrix. Ends of the X electrodes are led to the edge of the film board. The Y electrodes...http://www.google.de/patents/US7202855?utm_source=gb-gplus-sharePatent US7202855 - Capacitive input device
