DRIVING CIRCUIT AND DRIVING METHOD OF BACKLIGHT MODULE OF DISPLAY APPARATUS

摘要

The present invention provides a driving circuit and a driving method of a backlight module of a display apparatus. The driving method comprises the following steps: utilizing a phase detector to detect voltage phases of an inductor and a capacitor of a resonant circuit; utilizing a frequency adjusting module to obtain an operation frequency according to a phase detection signal; and utilizing a driving chip to drive a DC-to-AC power stage circuit according to the operation frequency. The invention can improve the transformation efficiency of the driving circuit.