An array substrate includes: a substrate; a first metal layer, disposed on the substrate, the first metal layer forming a gate electrode, a scan line and a first electrode, the scan line extending along a first direction in a plane of a surface of the substrate; a first insulation layer, disposed on the first metal layer; a second metal layer, disposed on the first insulation layer, the second metal layer forming a second electrode, projections of the first electrode and the second electrode on the substrate at least partly overlapping one another; a second insulation layer, disposed on the second metal layer; and a third metal layer, disposed on a side of the second insulation layer away from the second metal layer, the third metal layer forming an initialization signal line.