BACKLIGHT MODULE
PROBLEM TO BE SOLVED: To provide a backlight module for reducing cost, by protecting output voltage. SOLUTION: The backlight module arranged on a wiring board has a power supply control circuit to output a power supply signal, a transformer having a primary winding and at least one secondary winding...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a backlight module for reducing cost, by protecting output voltage. SOLUTION: The backlight module arranged on a wiring board has a power supply control circuit to output a power supply signal, a transformer having a primary winding and at least one secondary winding electrically connected to the power supply control circuit, and a voltage sensor arranged on the high voltage end of the secondary winding of the transformer, measuring a change in voltage on the high voltage end of the secondary winding by an electromagnetic induction method and transmitting information on a change in the measured voltage to the power supply control circuit. The power supply control circuit adjusts output of its own power supply signal based on the information on the change in the voltage. COPYRIGHT: (C)2010,JPO&INPIT |
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