The invention provides an array substrate, a display device and a driving method thereof. The array substrate includes a base substrate and also comprises a first thin film transistor, a second thin film transistor, a data line, a first electrode and a second electrode arranged on the base substrate. The first thin film transistor includes a first source electrode and a first drain electrode. Thesecond thin film transistor includes a second source electrode and a second drain electrode. The first source electrode and the second source electrode are connected to the data line, the first drainelectrode is connected to the first electrode, and the second source electrode is connected to the second electrode. A display function and a touch function can be simultaneously realized by the arraysubstrate. Moreover, the setting of external touch metal layer and touch signal line for the array substrate is not needed, therefore, thereby reducing the number of mask processes of the array substrate and reducing the cost of the array substrate.