Backlight module control circuit of multi-lamp display device

Details Backlight module control circuit of multi-lamp display device Backlight module control circuit of multi-lamp display device

2007-10-23

2007-10-23

Dinh, Trinh Vo (Department: 2821)

Electric lamp and discharge devices: systems

Plural load device systems

C315S291000, C315S307000, C315S300000, C315S308000

Reexamination Certificate

active

11326655

ABSTRACT:
A backlight module control circuit of a multi-lamp display device includes a control unit, multiple lamp driving circuits and a fault detection unit. The control unit includes multiple signal output terminals. Input terminals of the lamp driving circuits are respectively coupled to a signal output terminal of the control unit and output terminals of the lamp driving circuits are respectively coupled to a terminal of a lamp. A fault detection unit includes multiple signal detection input terminals, which are respectively coupled to multiple lamp driving circuits and lamps. The fault detection unit can detect whether any one of the lamps is out of order and then output a signal to the control unit, so as to make the control unit shut down the driving circuit of the failure lamp and continue to maintain an operation of other normal lamps.

REFERENCES:
patent: 6552501 (2003-04-01), Ito et al.
patent: 7002306 (2006-02-01), Cull et al.
patent: 2005/0225261 (2005-10-01), Jin
patent: 2007/0018593 (2007-01-01), Kuo
patent: 2007/0085488 (2007-04-01), Ribarich et al.

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