Displacement register and LCD using the same

The invention provides a shift register and a liquid crystal display adopting the shift register. The shift register comprises an input end used for receiving input signals, an output end used for providing output signals in response to the input signals, a pull-up device used for receiving a corresponding one between a first clock signal or a second clock signal and providing the output end with high-level output signals, a pull-up drive device for receiving the input signals of the input end and driving the pull-up device, a pull-down module comprising a first pull-down device and a second pull-down device and a pull-down drive device for receiving the output signals from a next stage and driving the pull-down module; and the first pull-down device and the second pull-down device alternately provide low-level output signals for the output end.