A display device includes: a substrate; a first gate electrode disposed on the substrate; a gate insulating layer disposed on the first gate electrode; a first active layer disposed on the gate insulating layer and including a polysilicon layer; a second gate electrode disposed on the gate insulating layer; a first insulating layer disposed on the second gate electrode; a second active layer disposed on the first insulating layer and including a metal oxide layer; a first source electrode, a first drain electrode, a second source electrode, and a second drain electrode, wherein the first source and drain electrodes are disposed on the first insulating layer and electrically connect to the first active layer, and the second source and drain electrodes are disposed on the second active layer and electrically connect to the second active layer; and a display medium layer disposed on the substrate.