| 摘要 |
The present invention relates to a backlight driving device of a liquid crystal display device. To improve the accuracy of a low current region due to the effect of the off-set voltage of an operational amplifier in a current controller part when a pulse amplitude modulation dimming method is applied, circuit configuration in the current control part is formed with a digital-analog convertor (DAC) type. Thereby, the backlight driving device can maintain constant current accuracy regardless of dimming duty. The backlight driving device comprises LED arrays; and a current control part. |
