Apparatus for driving lamps and liquid crystal display...

Details Apparatus for driving lamps and liquid crystal display... Apparatus for driving lamps and liquid crystal display...

2006-07-12

2010-11-30

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S277000

Reexamination Certificate

active

07843143

ABSTRACT:
An apparatus for driving lamps and a liquid crystal display having the same, wherein the uniformity of luminance among lamps is improved, includes a main transformer unit for supplying a driving voltage to the lamps, and a balance transformer unit for making a lamp current of each of the lamps uniform. The balance transformer unit has a plurality of coils wound on a single body, and the coils have the same turns ratio and share magnetic flux so that a constant uniform current can flow through each of the coils. Accordingly, a lamp current of each of the lamps connected to the respective coils of the balance transformer unit can be maintained to be constant, and thus, the luminance of the lamp can be maintained uniformly.

REFERENCES:
patent: 6515427 (2003-02-01), Oura et al.
patent: 6534934 (2003-03-01), Lin et al.
patent: 6717372 (2004-04-01), Lin et al.
patent: 6781325 (2004-08-01), Lee
patent: 6947024 (2005-09-01), Lee et al.
patent: 7075244 (2006-07-01), Kang et al.
patent: 7282868 (2007-10-01), Ushijima et al.
patent: 7291987 (2007-11-01), Chang et al.
patent: 7294971 (2007-11-01), Jin
patent: 2005/0093482 (2005-05-01), Ball
patent: 2005/0093484 (2005-05-01), Ball

Affiliated with

Also associated with

Rating

Apparatus for driving lamps and liquid crystal display... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for driving lamps and liquid crystal display..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for driving lamps and liquid crystal display... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4221035