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US 7,284,874 B2Granted
LED backlight unit including cooling structure
AssigneeLG.Philips LCD Co., Ltd.
InventorsIn Suk Jeong, Gi Bin Kim
Life of this patent
Estimating the term…
Abstract
A backlight unit is provided with LEDs having a cooling structure. The backlight according to an embodiment includes a heat pipe, which is disposed below a PCB having the LEDs thereon, and a heat sink connected with the heat pipe. In operation, heat generated from the LEDs is conducted via the PCB and the heat pipe and is radiated by the heat sink.
Claims22
A backlight unit having at least two opposing sides, comprising:
- a plurality of light emitting diodes (LEDs);
- a printed circuit board (PCB) for mounting the LEDs;
- a cover;
- a heat pipe disposed between the PCB and the cover;
- and
- at least two heat sink each disposed adjacent a surface of the cover and located at one or another of the two opposing sides of the backlight unit, and connected to an end of the heat pipe.
3 more elements
A backlight unit having at least two opposing sides, comprising:
- a plurality of light emitting diodes (LEDs) arranged in lines;
- a plurality of printed circuit boards (PCBs) for mounting the LEDs;
- a cover;
- a plurality of heat pipes disposed between the PCBs and the cover;
- and
- at least two heat sinks each disposed adjacent a surface of the cover and located at one or another of the two opposing sides of the backlight unit, and connected to an end of the heat pipe.
3 more elements
Dependencies are inferred from the claim text.