A display device includes a display panel configured to display an image, a first backlight unit that is disposed under the display panel and outputs first light, and a second backlight unit that is positioned between the display panel and the first backlight unit and outputs second light, wherein the first backlight unit includes a first light guide plate having first patterns protruding or recessed from a rear surface of the first light guide plate, the second backlight unit includes a second light guide plate having second patterns protruding from a rear surface of the second light guide plate, and the second patterns have an asymmetric pyramid shape.