BACKLIGHT MODULE WITH DYNAMIC OPEN-LAMP PROTECTION AND RELATED DRIVING METHOD

BACKLIGHT MODULE WITH DYNAMIC OPEN-LAMP PROTECTION AND RELATED DRIVING METHOD

In order to provide open-lamp protection to a backlight module, a pseudo open-lamp voltage is first generated according to the current flowing through a light source. If the backlight module receives a mode signal corresponding to a high contrast mode, a compensation voltage is added to the pseudo o...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHUEH CHIN-SHENG, WANG PO-WEN, LIN YUNGUN, TSENG JIUN-WEI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:In order to provide open-lamp protection to a backlight module, a pseudo open-lamp voltage is first generated according to the current flowing through a light source. If the backlight module receives a mode signal corresponding to a high contrast mode, a compensation voltage is added to the pseudo open-lamp voltage for generating a reference voltage. If the reference voltage is larger than a feedback voltage received from an input node of the light source, a driving voltage is outputted to the light source.