A display apparatus includes a display panel including a plurality of pixels, a gate driver generating a plurality of gate signals using a gate-on voltage and a gate-off voltage and providing the gate signals to the pixels, a data driver providing data voltages to the pixels, a timing controller controlling an operation timing of the gate driver and the data driver, a voltage generator providing the gate-on voltage and the gate-off voltage to the gate driver, and a timer measuring an operation time and providing the measured operation time to the timing controller. The timing controller controls the voltage generator such that a level of the gate-on voltage is controlled depending on the operation time and the level of the gate-on voltage is controlled depending on a magnitude of the gate-on voltage in a different way from a way to control depending on the operation time and the temperature.