Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-01-11
2011-01-11
Pak, Sung H (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
Reexamination Certificate
active
07868972
ABSTRACT:
A light source unit which can minimize current differences between a plurality of light emitting diodes (“LEDs”) includes a printed circuit board (“PCB”) which includes an active region that emits light and an inactive region that accounts for a remainder of the PCB, an LED array which includes a plurality of LEDs that are arranged at regular intervals, and a current balancing circuit which is disposed in the inactive region, generates a plurality of current balancing voltages by uniformly adjusting current differences between the LEDs, and outputs the current balancing voltages. A liquid crystal display (“LCD”) including the light source unit, and a method of minimizing current differences between a plurality of LEDs are further provided.
REFERENCES:
patent: 6930737 (2005-08-01), Weindorf et al.
patent: 7239087 (2007-07-01), Ball
patent: 2006/0238466 (2006-10-01), Chen et al.
patent: 2008/0018830 (2008-01-01), Negley
patent: 2008/0143925 (2008-06-01), Kim et al.
patent: 2009/0015759 (2009-01-01), Honbo
patent: 2004039684 (2004-02-01), None
patent: 1020040028976 (2004-04-01), None
Choi Min-soo
Han Song-yi
Um Jae-eun
Cantor & Colburn LLP
Pak Sung H
Samsung Electronics Co,. Ltd.
LandOfFree
Light source unit, liquid crystal display having the same,... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light source unit, liquid crystal display having the same,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light source unit, liquid crystal display having the same,... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2662068