FLAT LIGHT SOURCE DEVICE AND DISPLAY DEVICE HAVING THE SAME

摘要

A surface light source device and a backlight unit having the same are provided to increase a discharge current and spread electric discharge generated between electrodes to both ends of the surface light source device by using extension electrodes and a substrate of which the upper surface is inclined such that the thickness of both ends with the electrodes is thin and the thickness of the center part is thick, thereby improving brightness, brightness uniformity, and optical efficiency. A surface light source device comprises a first substrate(101), a second substrate(102), a partition(104), and electrodes(121,122). The second substrate is joined to the first substrate to form a discharge area. The partition divides the discharge area into plural discharge units. The electrodes are respectively installed to both ends of the discharge unit to apply a discharge voltage to the discharge area. The center area of at least one of the first and second substrates is thicker than the other area of the substrate.