An In-Plane Switching (IPS) array substrate, a method for manufacturing the IPS array substrate and a display device are provided. The common electrodes of the IPS array substrate further function as touch electrodes, thereby implementing a built-in touch display device. The IPS array substrate is further provided with signal lines that are electrically connected to the touch electrodes in a one-to-one correspondence. During a touch time period included in a time period for displaying one frame of image, it is detected, through the corresponding signal lines, whether self-capacitances of the touch electrodes are changed, so as to determine a touch position.