Patent ID: 8724049

Claim:
A backlight unit configured to be part of a backlighted flat panel display device and to provide backlighting to the flat panel display device, the backlight unit comprising: one or more light-emitting diodes (LEDs) configured to emit backlighting source light in response to applied electrical power; a printed circuit board (PCB) on which the LEDs are mounted, the PCB having a first thermal transfer material arranged for transferring heat energy away from the LEDs; a PCB fixing member configured to fix the PCB into place, the PCB fixing member having a base portion and a support portion extending upward from a surface of the base portion; and a lower housing which houses the PCB and the PCB fixing member, wherein the PCB fixing member comprises a second thermal transfer material arranged to thermally couple with the first thermal transfer material and thereby maintain the transfer of heat energy away from the LEDs, wherein the PCB fixing member has defined therein an insertion receiving structure which is shaped and dimensioned for having at least part of the PCB inserted into the insertion receiving structure and for thereby providing thermal coupling between the first and second thermal transfer materials, wherein the insertion receiving structure comprises an insertion groove which is formed in the base portion, wherein the lower housing disposed under the PCB fixing member includes a hole which is connected to the insertion groove, and wherein the one end of the printed circuit board is inserted into the insertion groove and into the hole to a depth equal to that of a lower surface of the lower housing.