Patent ID: 7798694

Claim:
A backlight unit, comprising: a light source for emitting a light; a light source reflector surrounding the light source; a light guide plate for guiding the light emitted from the light source, the light source being located at least one lateral side of the light guide plate; a reflector disposed under the light guide plate for reflecting the light toward the light guide plate; and a thermal layer disposed on and in direct contact with one surface of the reflector for absorbing heat transmitted from the light guide plate, wherein the thermal layer comprises: a thermally conductive material; about 10 to 40 parts by weight of a binder based on 100 parts by weight of the thermally conductive material; about 5 to 30 parts by weight of a filler based on 100 parts by weight of the thermally conductive material; and about 5 to 40 parts by weight of a curing agent based on 100 parts by weight of the binder, and wherein the reflector and the thermal layer have a length larger than a length of the light guide plate and are disposed directly below the light source reflector.