Backlight module driver circuit

Electric lamp and discharge devices: systems – Plural load device systems

Reexamination Certificate

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Details

C315S307000

Reexamination Certificate

active

11509500

ABSTRACT:
A backlight driver circuit has a transformer, a switching circuit and a plurality of switch devices. The switching circuit couples a DC voltage to a primary side of the transformer and alternates polarities thereof so that an AC voltage is generated on a secondary side of the transformer to turn on the backlight blocks. The switch devices are respectively connected between one of the backlight blocks and the transformer, and the AC voltage turns the backlight blocks on when the switch devices are turned on.

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patent: 6515427 (2003-02-01), Oura et al.
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patent: 7294971 (2007-11-01), Jin
patent: 7362059 (2008-04-01), Park
patent: 1670575 (2005-09-01), None
patent: 1683971 (2005-10-01), None

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