Array substrate, method for manufacturing the same, and display device

An array substrate, comprising a base substrate, wherein the array substrate comprises a plurality of pixel units,

• wherein, in each of the plurality of pixel units, the array substrate comprises a thin film transistor and a storage capacitor disposed above the base substrate,
• wherein the storage capacitor comprises a metal layer, an intermediate layer, and a reflective layer disposed in a stacked manner, the metal layer being adjacent to the base substrate, and
• wherein the array substrate further comprises a common electrode layer disposed on a side of the storage capacitor facing away from the base substrate, the reflective layer is electrically connected to the common electrode layer, and the metal layer is electrically connected to an active layer of the thin film transistor;
• wherein the thin film transistor comprises the active layer, a gate insulating layer, a gate electrode layer, an interlayer dielectric layer and a source-drain metal layer stacked sequentially on a side of the base substrate, and the active layer is adjacent to the base substrate;
• and
• wherein the source-drain metal layer and the metal layer are formed by using one and the same mask, and the metal layer is electrically connected to the active layer through a via hole provided in the interlayer dielectric layer and the gate insulating layer.