LCD BACKLIGHT DRIVING CIRCUIT AND LIQUID CRYSTAL DEVICE

摘要

A LED backlight driving circuit is disclosed. The LED backlight driving circuit includes a driving module, a detecting module, and an adjusting module. The driving module receives a control voltage generated by a voltage control module, receives a feedback voltage generated by a feedback voltage module, and generates driving signals to a LED unit. The detecting module generates adjusting signals for the adjusting module according to a detected value of the driving signals. The adjusting module controls the feedback voltage according to the adjusting signals generated by the detecting module so as to adjust the driving signals. In this way, not only the current precision within the LED unit is enhanced, but also the light source is kept stable. Also, the life cycle of the LED units is also increased. In addition, a LED backlight driving circuit includes the above LED backlight driving circuit is also disclosed.

主权项

1. A LED backlight driving circuit, comprising:
a driving module for receiving a control voltage generated by a voltage control module, receiving a feedback voltage generated by a feedback voltage module, and generating driving signals to a LED unit; a detecting module for generating adjusting signals for an adjusting module according to a detected value of the driving signals; and the adjusting module for controlling the feedback voltage according to the adjusting signals generated by the detecting module so as to adjust the driving signals.