Backlight unit and display device having the same

A display device comprising:

• a display panel which controls a transmittance of light provided thereto to display an image;
• and
• a backlight unit disposed under the display panel, wherein the backlight unit provides the light to the display panel, and the backlight unit comprises:
• a light source which generates the light;
• a light guide plate which guides the light from the light source substantially to an upward direction;
• a first frame member which holds the light source and diffuses the light traveling substantially in the upward direction between the light source and the light guide plate;
• a second frame member which holds the light guide plate;
• a third frame member which holds the light guide plate;
• a reflective plate disposed under the light guide plate, wherein the reflective plate reflects the light leaked downwardly from the light guide plate substantially to the upward direction;
• and
• an optical sheet disposed on the light guide plate and the first to third frame members, wherein the optical sheet diffuses the light provided from the first frame member and the light guide plate and condenses the light substantially in the upward direction.