Array substrate, manufacturing method thereof, display panel and display device

The invention relates to the field of displaying, and provides an array substrate, a manufacturing method thereof, a display panel and a display device. The manufacturing method of the array substratecomprises the steps of supplying the array substrate which is provided with a pixel region and a fan-out region; forming a first wiring region, a second wiring region and a suspended region between the first wiring region and the second wiring region in the fan-out region, and connecting the fan-out region with the pixel region; forming a film virtual metal wire in the suspended region; and patterning the film virtual metal wire. Through patterning the film virtual metal wire, accumulated static charges are reduced for preventing static breakdown; and on the other hand, Rubbing Mura in friction orientation of an alignment film is prevented, thereby improving product performance. Furthermore simple operation is realized in removing the film virtual metal wire according to the method. The number of processing proce