Display system and control method

A display system, comprising:

• a display device comprising a plurality of gate lines, a plurality of source lines, a plurality of pixel electrodes provided respectively in regions defined by the plurality of gate lines and the plurality of source lines, and a plurality of common electrodes provided to face the plurality of pixel electrodes and used for both image display and touch detection;
• a drive circuit that supplies a touch drive signal to each of the plurality of common electrodes;
• and
• a touch detection circuit that performs detection of a touch by an object on the display device, based on a touch detection signal received from each of the plurality of common electrodes, wherein
• the display device includes a plurality of touch detection regions, and, among the plurality of common electrodes, a plurality of common electrodes are arranged in each of the touch detection regions,
• the drive circuit supplies the touch drive signal to each of the plurality of common electrodes when touch detection is performed in part of the plurality of touch detection regions, and
• the drive circuit does not supply the touch drive signal to each of the plurality of common electrodes when touch detection is not performed in rest of the plurality of touch detection regions.

A control method for controlling a display device comprising a plurality of gate lines, a plurality of source lines, a plurality of pixel electrodes provided respectively in regions defined by the plurality of gate lines and the plurality of source lines, and a plurality of common electrodes provided to face the plurality of pixel electrodes and used for both image display and touch detection, the control method comprising:

• supplying a touch drive signal to each of the plurality of common electrodes;
• and
• performing detection of a touch by an object on the display device, based on a touch detection signal received from each of the plurality of common electrodes, wherein
• the display device includes a plurality of touch detection regions, and, among the plurality of common electrodes, a plurality of common electrodes are arranged in each of the touch detection regions, and
• touch detection is performed in part of the plurality of touch detection regions, and touch detection is not performed in rest of the plurality of touch detection regions.