An display device is provided which including a stacked array substrate, a display medium layer and an opposite substrate. The array substrate includes a substrate, and plurality of arrayed thin film transistors and conductor layers disposed on the substrate, the conductor layers have a plurality of gate signal lines for transmitting gate signals, each of the gate signal lines extends along a first direction and connects to the plurality of the thin film transistors disposed along the first direction, resistances of the gate signal lines are decreased along a transmitting direction of the gate signals. It realizes that the actual driving voltages of the gate signal line in respective regions are consistent with the ideal driving voltage by designing a gate signal line with a uniform decrease of resistance in a transmitting direction of the gate signal.