A BACKLIGHT UNIT AND A DISPLAY UNIT

摘要

PURPOSE: A backlight unit of a display device is provided to align films and a light guide plate in the same time. CONSTITUTION: A backlight unit(20) of a display device comprises a bottom cover(40) with protrusions(51) in which level differences are formed along a first and a second edge, a light guide plate and a optical sheet(70,80) placed on the bottom cover an connected in order, and a light emitting part(30) for projecting light to the side of the light guide plate.