A display device having enhanced visibility and a mobile terminal including the same are provided. The display device includes a liquid crystal display panel for displaying a predetermined image by selectively transmitting incident light, a backlight unit for providing light for driving the liquid crystal display panel, a diffraction sheet disposed between the liquid crystal display panel and the backlight unit to diffract light from an external light source passing through the liquid crystal display panel and to reapply the light toward a front surface direction from a rear surface of the liquid crystal display panel.