Patent ID: 8704816

Claim:
A control circuit for a liquid crystal display, comprising: a power supply for supplying a power; a control integrated chip; a liquid crystal panel; a driving integrated chip arranged between the control integrated chip and the liquid crystal panel, the driving integrated chip comprising a plurality of output ports for outputting a plurality of driving voltages respectively; wherein the control circuit further comprises a plurality of voltage adjusting sub-circuits arranged between the corresponding output port of the driving integrated chip and the liquid crystal panel for adjusting an initial value of the driving voltage outputted from the corresponding output port before the driving voltage is transferred to the liquid crystal panel; each of the voltage adjusting sub-circuits comprises a first resistor, a second resistor, and a rheostat unit, one end of the first resistor is connected to the corresponding output port and the other end thereof is grounded via the second resistor, and the rheostat unit is connected between the control integrated chip, the first resistor, and the second resistor.