A display device is provided. The display device includes a substrate, a driving transistor, a first electrode and an insulation layer. The driving transistor is disposed on the substrate, wherein the driving transistor comprises a gate electrode. The first electrode is disposed on the gate electrode. The insulation layer is disposed on the first electrode, wherein the insulation layer has an opening, and the opening exposes a portion of the first electrode. In view of a first direction perpendicular to the substrate, the first electrode partially overlaps the gate electrode to form a first portion, and the first portion is separated from the opening.