| 摘要 |
A driving circuit of an LCD device and a driving method thereof are provided to enable a backlight driving unit to receive a sync signal from a system driving unit and synchronize a PWM signal, thereby reducing noise without additional parts and widely selecting a signal by synchronizing a pulse width modulation signal. A driving circuit of an LCD(Liquid Crystal Display) device(100) comprises a display panel(110), a gate driver(120), a data driver(130), a panel driving unit(140), a system driving unit(150), a backlight driving unit(160), and a lamp(170). The panel driving unit provides a data signal and a sync signal for driving the gate driver and the data driver. The system driving unit receives and transmits the sync signal from the panel driving unit. The backlight driving unit receives the sync signal from the system driving unit to synchronize a PWM(Pulse Width Modulation) signal and drives backlight according to the synchronized PWM signal. |
