Back to results
US 7,252,409 B2Granted
Backlight unit
AssigneeLG.Philips LCD Co., Ltd.
InventorIn Jue Kim
Life of this patent
Estimating the term…
Abstract
A backlight unit of a hybrid structure is disclosed, to improve heat-sink efficiency, that includes a plurality of fluorescent lamps oriented in one direction inside a cover bottom; a metal PCB attached to an inner surface of the cover bottom; a plurality of LED lamps each positioned between the fluorescent lamps and on the metal PCB; a hole in a portion of the cover bottom that exposes a rear surface of the metal PCB; and a heat-sink plate directly attached to the metal PCB through the hole in the cover bottom.
Claims12
A backlight unit comprising:
- a plurality of fluorescent lamps oriented in one direction inside a cover bottom;
- a metal PCB attached to an inner surface of the cover bottom;
- a plurality of LED lamps each positioned between the fluorescent lamps and on the metal PCB;
- a hole in a portion of the cover bottom that exposes a rear surface of the metal PCB;
- and
- a heat-sink plate directly attached to the metal PCB through the hole in the cover bottom.
3 more elements
A method cooling a backlight unit comprising:
- placing a plurality of fluorescent lamps inside a cover bottom;
- attaching a metal PCB to an inner surface of the cover bottom;
- placing a plurality of LED lamps each positioned between the fluorescent lamps and on the metal PCB;
- forming a hole in a portion of the cover bottom exposing a rear surface of the metal PCB;
- and
- attaching a heat-sink plate directly to the metal PCB through the hole in the cover bottom.
3 more elements
Dependencies are inferred from the claim text.