| 摘要 |
PURPOSE: An apparatus for adjusting a feedback voltage for back light of a liquid crystal display and a driving system for having thereof are provided to suppress the shoot down of a back light unit by controlling a feedback voltage of a driving system. CONSTITUTION: In case a transmitted feedback voltage is bigger than a reference voltage, a feedback voltage controller(410) control a feedback voltage to be lower than the reference voltage. A voltage supply unit(420) applies voltage to the feedback voltage controller to activate the feedback voltage controller. The feedback voltage controller includes bipolar junction transistor or a MOS FET(Metal Oxide Semiconductor Field Effect Transistor). |
