Signal Control Circuit, Power Control Circuit, Drive Circuit, Timing Controller, Touch System, and Touch Display Device and Driving Method Thereof

摘要

Exemplary embodiments of the present invention relate to a touch technology, and more specifically, to a signal control circuit, a power control circuit, a drive circuit, a timing controller, a touch system, and a touch sensitive display device and a driving method thereof that can simply swing various voltages in a display device for a touch mode period by using a modulated ground voltage obtained by swinging a ground voltage, thereby effectively providing touch driving and preventing unnecessary parasitic capacitance from being generated not only in an active area but also in all other areas.

主权项

1. A touch sensitive display device comprising:
a display panel that comprises a plurality of common electrodes, the common electrodes driven for touch sensing and image display; a driving circuit to supply a touch driving signal to at least a first common electrode of the common electrodes; ground wiring; and a circuit to provide a modulated ground voltage to the ground wiring, the touch driving signal having a same phase as the modulated ground voltage and having a DC voltage offset relative to the modulated ground voltage.