<p>A capacitive touch sensor comprises a plurality of detection electrodes (41), one high-frequency power supply (100) which applies a high-frequency signal to a detection electrode (41) through a predetermined impedance element, a wiring means (32) for connecting the detection electrode (41) and the impedance element, a shield electrode (38) for joining the detection electrode (41) and the connection pattern (32), and one shield signal source (300) having the same phase and amplitude as the high-frequency power supply (100) and applying a shield signal to the shield electrode (38).</p>
