| 摘要 |
A transparent input operation plate at least an input operation area of which inside an opening is made of a transparent member is supported on an insulating support member so as to cover an aperture of the opening. A plurality of detection electrodes are arranged on the insulating support member so as to be in contact with the transparent input operation plate around the opening. Transmitting means transmits an alternating-current detection signal that changes relative potentials between an input operation member and the respective detection electrodes. Based on a relative ratio of the reception levels of the alternating-current detection signal appearing on a pair of detection electrodes opposed across the opening, an input operation position of the input operation member in the opposed direction is detected. |
