Inverter circuit, fluorescent tube lighting apparatus, backlight apparatus, and liquid crystal display
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United States of America Patent
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May 3, 2011
Grant Date -
Mar 20, 2008
app pub date -
Oct 30, 2007
filing date -
Aug 6, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A driving apparatus and a driving method are disclosed that are capable of uniformly lighting each entire fluorescent tube irrespective of the length or number of fluorescent tubes when simultaneously driving a plurality of fluorescent tubes in a fluorescent tube lighting apparatus. When two inverter circuits having respective transformers are provided at both ends of a fluorescent tube to light the fluorescent tube by push-pull driving, feedback windings of transformers not used in self-excited oscillation of each inverter circuit are connected together, with the transformer connection that connects together the feedback windings being either in-phase or in opposite phase, and the method of connection for fluorescent tubes connecting to secondary windings of each transformer can be changed in accordance with that connection method.
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