Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy control of an electric discharge device in...
Reexamination Certificate
2005-12-13
2008-10-07
Vu, David Hung (Department: 2821)
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Radiant energy control of an electric discharge device in...
C315S157000, C315S158000
Reexamination Certificate
active
07432659
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.
REFERENCES:
patent: 2004/0246722 (2004-12-01), Chang et al.
Chu Haang Rhym
Park Hee Jeong
LG Display Co. Ltd.
McKenna Long & Aldridge LLP
Vu David Hung
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