A display device includes: a substrate; a first conductive layer including gate electrodes respectively disposed in pixel circuit areas arranged in a first direction on the substrate; a second conductive layer disposed on the first conductive layer, the second conductive layer including first bridge patterns; a third conductive layer disposed on the second conductive layer, the third conductive layer including a voltage supply line for supplying a driving voltage and second bridge patterns; and a fourth conductive layer disposed on the third conductive layer, the fourth conductive layer including common electrode lines which are electrically connected to the gate electrodes through the first and second bridge patterns and are electrically disconnected from the voltage supply line. The common electrode lines are arranged in a second direction intersecting the first direction, and each of the common electrode lines extends in the first direction to overlap with the pixel circuit areas.