Provided is a display device including a base substrate including a display area and a non-display area adjacent to the display area, a display element layer disposed on an upper portion of the base substrate, a sensor part disposed on a lower portion of the base substrate, and a sensing circuit board disposed on the lower portion of the base substrate and generating an electric field in response to an input from outside. The sensing circuit board includes a main board including a first opening part exposing the sensor part, and an auxiliary board overlapping the sensor part, disposed on the main board, and electrically connected to the main board.