Method and device for driving CCFL circuit

Details Method and device for driving CCFL circuit Method and device for driving CCFL circuit

2007-11-20

2007-11-20

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

With load device temperature modifier

Electric heater for the load device

C315S117000, C315S291000

Reexamination Certificate

active

11245517

ABSTRACT:
A driving device for a CCFL circuit comprising at least one CCFL is provided. The driving device comprising at least one heating device controlling the temperature of the at least one CCFL, a power supply outputting a first voltage, and a switching device having a first input terminal receiving the first voltage and a first and second output terminal; wherein the first output terminal is coupled to the CCFL circuit outputting a second voltage when the first voltage is higher than a first level, and the second output terminal is coupled to the at least one heating device outputting a third voltage when the first voltage is lower than the first level. The driving device further comprises a controller controlling the power supply to output the first voltage higher than the first level to lighting up the at least one CCFL, and lower than the first level to control the temperature of the at least one CCFL.

REFERENCES:
patent: 5336976 (1994-08-01), Webb et al.
patent: 5907742 (1999-05-01), Johnson et al.
patent: 6198234 (2001-03-01), Henry
patent: 2006/0071601 (2006-04-01), Yamada et al.
patent: 11-305196 (1999-11-01), None
patent: I226788 (2005-01-01), None
Taiwan Patent Office Action mailed Mar. 7, 2006.

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