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US 2006/0187180 A1Published application
Back light unit and liquid crystal display device using the same
AssigneeLG Display Co., Ltd.
InventorsHee Park, Haang Chu
Life of this patent
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Abstract
A back light unit and an LCD device using the same in which current which flows in a plurality of light emitting diodes (LEDs) is uniformly controlled having a small PCB is provided. The back light unit includes a plurality of LED arrays having LEDs and a detector which detects a feedback signal which corresponds to a current that is input to the LEDs. The backlight unit also includes a driver which drives the LEDs in accordance with the feedback signal from the detector.
Claims15
A back light unit comprising:
- a plurality of light emitting diode (LED) arrays, the LED arrays having a plurality of light emitting diodes (LEDs);
- a detector which detects a feedback signal where the feedback signal corresponds to a current which is input to the LEDs;
- and
- a driver which drives the LEDs according to the feedback signal from the detector.
1 more element
An LCD device comprising:
- a liquid crystal injected between an upper substrate and a lower substrate;
- and
- a back light unit which irradiates light onto the liquid crystal panel, wherein the back light unit includes:
- a plurality of LED arrays having a plurality of light emitting diodes (LEDs);
- a detector which detects a feedback signal where the feedback signal corresponds to a current which is input to the LEDs;
- and
- a driver which drives the LEDs according to the feedback signal from the detector.
4 more elements
Dependencies are inferred from the claim text.