Power supply for an LCD panel

Details Power supply for an LCD panel Power supply for an LCD panel

2005-04-21

2008-09-16

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S102000, C315S224000

Reexamination Certificate

active

07425949

ABSTRACT:
A power supply system is provided for a multiple lamp LCD panel. In one aspect, the power supply includes a plurality of transformers for driving a plurality of respective CCFLs. The primary sides of each transformer are coupled in series to thereby reduce the stress on each transformer. For LCD panels that include longer CCFLs, a power supply is provided that includes a plurality of transformers for driving a plurality of respective CCFLs. The primary sides of each transformer are coupled in series and each lamp is coupled to two secondary sides of the transformers, thereby reducing the problems associated with longer CCFL tubes. In any of the embodiments, the power supply can be adapted to convert a high voltage DC signal to high voltage AC used to power the lamps.

REFERENCES:
patent: 6304137 (2001-10-01), Pullen et al.
patent: 6310444 (2001-10-01), Chang
patent: 6580229 (2003-06-01), Murakami et al.
patent: 6717372 (2004-04-01), Lin et al.
patent: 6750842 (2004-06-01), Yu
patent: 6812916 (2004-11-01), Hwang
patent: 2002/0130628 (2002-09-01), Shin
patent: 2003/0151601 (2003-08-01), Chung et al.
patent: 2004/0032223 (2004-02-01), Henry

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