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1. A display device with touch detection, comprising:
display elements; a plurality of common drive electrodes arranged in parallel to extend in one direction; a plurality of detection electrodes arranged in parallel to extend in a direction which intersects the common drive electrodes and allowing electrostatic capacitance to be formed at each intersection; a scan driving unit performing a first scan drive and a second scan drive, the first scan drive allowing a display drive signal for driving the display elements to be time-divisionally applied to each of the plurality of common drive electrodes in succession, the second scan drive allowing a touch detection drive signal for detecting an external proximity object to be time-divisionally applied to each of the plurality of common drive electrodes in succession; and a detection circuit detecting the external proximity object based on a touch detection signal which is outputted from the detection electrode in response to application of the touch detection drive signal or the display drive signal, wherein the scan driving unit is configured to,
when a common drive electrode selected to be driven in the first scan drive is coincident with a common drive electrode selected to be driven in the second scan drive, apply the display drive signal to the coincident common drive electrode and to not apply the touch detection drive signal to the coincident common drive electrode, andwhen a common drive electrode selected to be driven in the first scan drive is different from a common drive electrode selected to be driven in the second scan drive, drive the respective common drive electrodes so that waveform of the touch detection drive signal transits at a timing within a period accompanied by no waveform transition of the display drive signal, and the detection circuit is configured to,
when a common drive electrode selected to be driven in the first scan drive is coincident with a common drive electrode selected to be driven in the second scan drive, detect the external proximity object based on a change of the touch detection signal upon transition of the waveform of the display drive signal instead of a transition of the waveform of the touch detection drive signal, andwhen a common drive electrode selected to be driven in the first scan drive is different from a common drive electrode selected to be driven in the second scan drive, detect the external proximity object based on a change of the touch detection signal upon transition of the waveform of the touch detection drive signal. |
