Patent ID: 7784989

Claim:
A light emitting diode backlight unit including light guide plate comprising: a light source having a substrate and a plurality of light emitting diodes disposed on the substrate, the substrate having a plurality of holes located between the plurality of light emitting diodes; a light guide plate, placed adjacent one side of the substrate, having a plurality of protrusions protruding from the light guide plate toward the light source; a chassis, disposed adjacent the opposite side of the substrate, for fixing the light source and the light guide plate therein, the chassis having a plurality of holes; wherein the protrusions of the light guide plate are inserted into the holes of the substrate and the chassis, respectively such that the substrate of the light source is fastened to the chassis and fixed in surface contact with the chassis, and a side of the light guide plate is engagingly fitted into the substrate of the light source and the chassis, wherein the light guide plate with its protrusions has a length greater than an inner length of the chassis for fixing the light source and the light guide plate.