Patent ID: 9513749
Filing Date: 2016-12-06
CPC Classification: G02F,G06F

Claim Text:
1. A display device comprising: a display panel unit including: a first circuit unit generating pulses of a touch drive signal and a signal of common drive for the display and applying them to the plurality of first electrodes; a second circuit unit receiving pulses from the plurality of second electrodes based on the pulses of the touch drive signal and detecting the pulses as a touch detection signal; a third circuit unit applying a display drive signal to the pixels of the display area; a plurality of first wirings disposed in a peripheral area of the touch detection area and mutually connecting the plurality of first electrodes and the first circuit unit; a plurality of second wirings disposed in the peripheral area of the touch detection area and mutually connecting the plurality of second electrodes and the second circuit unit; and a plurality of paths transmitting the pulses of the touch drive signal and including the plurality of first wirings, the plurality of first electrodes, the plurality of units of touch detection, the plurality of second electrodes, and the plurality of second wirings, the first circuit unit generating a plurality of types of pulses having mutually different pulse cycles and applying the pulses to the plurality of first electrodes in accordance with differences in time constants with respect to the plurality of paths; the plurality of first wirings are disposed in a first wiring part disposed in a first region of the peripheral area and a second wiring part disposed in a second region of the peripheral area to have a symmetrical shape with respect to the first wiring part; the plurality of first wirings disposed in the first wiring part are respectively coupled to first ends of the corresponding first electrodes among the plurality of first electrodes; the plurality of first wirings disposed in the second wiring part are respectively coupled to second ends of the corresponding first electrodes among the plurality of first electrodes; and upon scanning drive of applying the pulses of the touch drive signal sequentially to the plurality of first electrodes of the touch detection area through the plurality of first wirings, the first circuit unit applies the pulses to both of the first end and the second end of each of the plurality of first electrodes through the first wiring part and the second wiring part.