In relation to touch sensors, technique capable of shortening total touch drive time and a touch detection period or suppressing increase thereof are provided. In a panel unit of a touch-sensor device, a touch drive unit generates a first pulse to an M-th pulses which are pulses of a plurality of types having mutually different cycles in accordance with differences in time constants with respect to paths including wirings of a peripheral area, touch drive electrodes, units of touch detection, touch detection electrodes, and wirings of the peripheral area through which pulses of touch drive signals to the plurality of touch drive electrodes are transmitted in a touch detection area in which the plurality of units of touch detection formed by pairs of the plurality of touch drive electrodes and the plurality of touch detection electrodes are formed like a matrix, and the touch drive unit applies the pulses.