Abstract: In a display system, a display device includes multiple sensor electrodes divided into multiple groups. A second drive circuit supplies, to the multiple sensor electrodes, a touch drive signal having a phase different for each group. A touch detection circuit performs detection of a touch by an object on the display device, based on a detection signal received from the multiple sensor electrodes.

Abstract: In a display system, a display device includes multiple sensor electrodes divided into multiple groups. A second drive circuit supplies, to the multiple sensor electrodes, a touch drive signal having a phase different for each group. A touch detection circuit performs detection of a touch by an object on the display device, based on a detection signal received from the multiple sensor electrodes.

Abstract: A touch detection device includes a touch panel including a first electrode part arranged so as to extend in a first direction and a second electrode part arranged so as to extend in a second direction that is different from the first direction. The touch detection device also includes a pulse generating unit configured to output a pulse signal to the first electrode part, a resistance element arranged between an output terminal of the pulse generating unit and the first electrode part, and a touch detecting unit configured to detect whether the touch panel is touched or not based on a phase difference in a voltage signal of the second electrode part, which is generated in accordance with the pulse signal. The phase difference is based on whether the touch panel is touched or not.