Capacitive sensor for sensing tactile and proximity, and a sensing system using the same

摘要

Disclosed is a capacitive proximity sensor in dual implementation. The sensor comprises an upper electrode layer having a plurality of electrodes disposed in line with each other, a lower electrode layer having a plurality of electrodes disposed in line with each other and an insulating layer disposed between the upper electrode layer and the lower electrode layer. The sensor detects the proximity of approaching objects by the capacitance change between the electrodes disposed in the upper electrode layer, and detects the contact of any objects by the capacitance change between the electrodes of the upper electrode layer and the electrodes of the lower electrode layer.