An array substrate comprises a sub-pixel and a touch-sensitive pixel. The touch-sensitive pixel comprises a sensing TFT, a capacitor, a switching element and a signal line. The drain electrode of the sensing TFT is connected to a first terminal of the capacitor; a first terminal of the switching element is connected to the first terminal of the capacitor, and the second terminal thereof is connected to the signal line, and used to output a voltage at the first terminal to the signal line; the signal line is used to output a voltage at the first terminal to a touch processing unit so that it is analyzed by the touch processing unit to obtain a touch result.