The invention provides a shift register, which delays and outputs a starting voltage received by the shift register and simultaneously outputs a reverse voltage of the delayed starting voltage. The shift register comprises a voltage shift module, a voltage reversing module, a supplement voltage module and a voltage shift control module, wherein the voltage shift module outputs the voltage with the same direction as the starting voltage from a second output port under the control of second starting voltage signals, and the voltage reversing module outputs the voltage reverse to the starting voltage from a first output port under the control of the voltage output by the voltage shift module, and outputs the voltage with the same direction as the starting voltage from the first output port under the control of first starting voltage signals or third starting voltage signals; and the supplement voltage module outputs the voltage reverse to the starting voltage from the second output port under the control of the voltage output by the voltage reversing module, and the voltage shift control module controls the cut-off of the voltage shift module under the control of the voltage output by the voltage reversing module. The invention also provides a display device using the shift register and a corresponding method.