Patent ID: 7686494

Claim:
A backlight assembly having a plurality of light emitting diodes (LEDs) and a light guide plate for uniformly guiding light emitted from the LEDs to a liquid crystal substrate, the backlight assembly comprising: a first reflective structure having at least one reflective surface facing a corresponding LED and tilted at a constant angle and a second reflective structure being independently disposed and spaced a distance from the first reflective structure, wherein each LED is disposed to emit light to a direction substantially perpendicular to a longitudinal bisector of the light guide plate toward each facing reflective surface and none of the LEDs are disposed to emit light to a direction substantially parallel to the longitudinal bisector of the light guide plate, wherein each LED corresponds to a single reflective surface so that the ratio of LEDs to reflective surfaces in the backlight assembly is 1 to 1, wherein the light emitted from each of the LEDs is reflected by the corresponding reflective surface to be incident on the light guide plate in a form of line-shaped light, wherein the backlight assembly includes at least four combinations of a LED and a corresponding reflective surface and the combinations are disposed substantially symmetrically about the longitudinal bisector of the light guide plate, and wherein all of the LEDs are arranged along a common line that extends along a side of the light guide plate, and that common line is substantially perpendicular to the longitudinal bisector of the light guide plate.