Inverter circuit, backlight device and liquid crystal...

Details Inverter circuit, backlight device and liquid crystal... Inverter circuit, backlight device and liquid crystal...

2008-10-31

2011-10-04

Chang, Daniel D (Department: 2819)

Electric lamp and discharge devices: systems

Plural load device systems

C315S2090SC

Reexamination Certificate

active

08030858

ABSTRACT:
An inverter circuit for a backlight device includes an inverter transformer which supplies a high AC voltage to a plurality of discharge tubes, a filter circuit connected to an output terminal of the inverter transformer, and an abnormal discharge detection circuit. The filter circuit passes a current signal having a high frequency component of the high AC voltage to the abnormal discharge detection circuit, and the abnormal discharge detection circuit detects an abnormal discharge current based on the current signal.

REFERENCES:
patent: 7411355 (2008-08-01), Jang et al.
patent: 7800318 (2010-09-01), Hsu
patent: 2007/0108918 (2007-05-01), Sengoku et al.
patent: 2000092865 (2000-03-01), None
patent: 2006085962 (2006-03-01), None
patent: 2007141802 (2007-06-01), None
patent: 1020060034462 (2006-04-01), None
patent: 1020070052394 (2007-05-01), None

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