Patent ID: 7202921

Claim:
A backlight unit for a liquid crystal display, comprising: a light guide plate having a light emitting surface, a light receiving lateral side, a first coupling lateral side, and a second coupling lateral side, the first coupling lateral side having a first coupling member and the second coupling lateral side having a second coupling member, wherein the first coupling lateral side and the second coupling lateral side are generally perpendicular to the light emitting surface; a diffusing means corresponding to the light emitting surface; a reflector disposed along the light receiving lateral side, said reflector having a reflective cover, an opening, a first holder, and a second holder, the opening positioned toward the light receiving lateral side, the first holder extending toward the first coupling lateral side and the second holder extending toward the second coupling lateral side, the first holder having a first linking member, and the second holder having a second linking member; and a light source installed inside the reflector, the light emitted from the light source being reflected by the reflective cover and transmitted into the light guide plate, wherein the first and second coupling members are respectively directly combined with the first and second linking members for assembling the reflector and the light guide plate, and a predetermined distance is formed between the light source and the light guide plate, wherein the reflector further includes a base cover, an angle is formed between the first holder and the base cover, the angle is less than 90 degrees; as the light guide plate expands when heated, the light guide plate pushes the first holder and the first angle is increased to form a space, and the expanding portion of the light guide plate is received in the space.