An input sensing unit includes a first sensing electrode, a second sensing electrode crossing the first sensing electrode, a first pen-sensing electrode adjacent to the first sensing electrode and crossing the second sensing electrode, and a second pen-sensing electrode adjacent to the second sensing electrode and crossing the first sensing electrode. A first sensing line is electrically connected to the first sensing electrode. A second sensing line is electrically connected to the second sensing electrode via the active area. A first pen-sensing line is electrically connected to the first pen-sensing electrode. A second pen-sensing line is electrically connected to the second pen-sensing electrode via the active area and disposed between the first sensing electrode and the second sensing line in the active area.