A display panel includes a light-providing unit, a display panel and a panel driving unit. The display panel selectively displays an image corresponding to a first driving mode and a second driving mode using light from the light-providing unit. The panel driving unit includes a power supply, a data driver and a gate controller. The power supply includes a first power supply and a second power supply selectively outputting a first power voltage and a second power voltage corresponding to the first driving mode and the second driving mode. The second power voltage is smaller than the first power voltage. The data driver and the gate controller respectively output a data voltage and a gate controlling signal to the display panel corresponding to the driving mode.