The invention provides an array substrate, a display panel and a display device. The array substrate comprises a substrate body and first and second thin film transistors (TFT) thereon, and the activelayer material of the first TFT is different from that of the second TFT; the first TFT comprises the first active layer, a first gate, a first source and a first drain, and the first active layer isa low-temperature polycrystalline silicon layer; the second TFT comprises a second active layer, a second gate, a second source and a second drain; the first source, the first drain, the second source and the second drain are positioned in the same layer; and there is a first gate insulating layer between the first active layer and the first gate, and the second active layer is positioned in theslide, close to or far from the substrate, of the first gate insulating layer and does not make direct contact with the first gate insulating layer. Thus, the film layer on the array substrate can bereduced, and the first gate in the first TFT is avoided from influencing influence of the second TFT.