Driving apparatus for CCFL

Details Driving apparatus for CCFL Driving apparatus for CCFL

2007-10-16

2007-10-16

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S224000, C315S308000, C315S307000, C315S2090SC, C315S244000, C315SDIG002

Reexamination Certificate

active

11420944

ABSTRACT:
The invention relates to a driving apparatus for a CCFL capable of easily providing a high output required to start the lamp. In the apparatus, an oscillator provides a reference signal in accordance with a lamp-on condition or a lamp-out condition. According to the invention, a tuning capacitor current of an oscillator is increased so that a switching speed of an inverter becomes faster in the lamp-out condition than in the lamp-on condition, thereby satisfying the voltage required to start the lamp.

REFERENCES:
patent: 6114814 (2000-09-01), Shannon et al.
patent: 6259615 (2001-07-01), Lin
patent: 6281642 (2001-08-01), Konishi et al.
patent: 6919694 (2005-07-01), Moyer et al.
patent: 6927989 (2005-08-01), Fukumoto
patent: 2006/0279235 (2006-12-01), Gong et al.
patent: 6243976 (1994-09-01), None

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