Patent ID: 8717329

Claim:
A touch panel comprising: n first line electrodes to which pulses are applied, n being an integer of 2 or greater; m second line electrodes for use in detection, m being an integer of 2 or greater, the second line electrodes being arranged to cross the first line electrodes; and a pulse generating circuit configured (i) to be able to apply pulses in a selected order to n 1 first line electrodes selected from among the n first line electrodes, n 1 being an integer of at least 1 and not greater than n, and (ii) to be able to apply pulses to all of the n first line electrodes; and a detecting circuit, wherein, the detecting circuit is configured to detect a touched position on the touch panel by detecting a change in capacitance between one of the first line electrodes and one of the second line electrodes, the touch panel is configured to be switched between a first mode in which the pulses are applied in the selected order to the selected n 1 first line electrodes, where 1≦n 1 <n, and a second mode in which the pulses are applied to all of the n first line electrodes, the touch panel operates in the first mode during standby, and the touch panel is switched from the first mode to the second mode at least when a touch is detected once within a predetermined time limit and a duration of the touch exceeds the predetermined time limit.