US Patent 9696223 Single layer force sensor

A sensor for sensing an application of pressure is disclosed. The sensor includes a substrate, conductive elements and an electroactive layer. First and second conductive elements are supported on the substrate and have elongate edges spaced apart from each other. The electroactive layer has a common surface adhered against the conductive elements. The electroactive layer defines at least one electrical property in a portion of the layer between the conductive elements. The electrical property is configured to vary in relation to a magnitude of the pressure.