Field of the Invention
The present disclosure relates to a display device. More particularly, the present disclosure relates to a display device having improved light-use efficiency.
Description of the Related Art
A non-self-emissive display device, such as a liquid crystal display device, an electrophoretic display device, an electrowetting display device, etc., requires a separate backlight unit to generate light. The backlight unit is classified into an edge-illumination type backlight unit and a direct-illumination type backlight unit according to a position of a light source with respect to a display screen on which an image is displayed. The edge-illumination type backlight unit has a relatively thinner thickness than that of the direct-illumination type backlight unit. Accordingly, a mobile display device mainly employs the edge-illumination type backlight unit.