A display device includes a display panel including a pixel coupled to a data line, a read-out line, a scan line, and a sensing line, a scan driver for generating scan and sensing signals to be supplied to the scan and sensing lines, a voltage controller for controlling a gate-on voltage of each of the scan and sensing signals to be supplied to the pixel during a mobility sensing period, a data driver for supplying a data signal to the data line, and a compensator for sensing current flowing from the pixel to the read-out line and compensate for the data signal, wherein the mobility sensing period includes a period during which each of the scan and sensing signals has a first voltage, a period during which the gate-on voltage of the scan and sensing signals changes, and a period during which the sensing signal has the first voltage.