Array substrate and display panel

The embodiment of the invention relates to the technical field of display, and discloses an array substrate and a display panel. The array substrate comprises a substrate, a bottom gate, a bottom gate insulating layer, an active layer, a top gate insulating layer and a top gate, wherein the bottom gate, the bottom gate insulating layer, the active layer, the top gate insulating layer and the top gate are sequentially stacked on the substrate. The array substrate further comprises a source electrode and a drain electrode, wherein the source electrode and the drain electrode are electrically connected with the active layer. The top gate comprises a first part located on the side, away from the substrate, of the top gate insulating layer and a second part extending from the edge of the first part and making contact with the bottom gate; the width of the second part is larger than or equal to that of the first part in the direction from the source electrode to the drain electrode. The invention further provides a