| 摘要 |
A shift register includes a plurality of shift register stages cascade-connected with each other. Each shift register stage includes a pull up module for outputting an output pulse in response to a first clock signal, a pull-up driving module for turning on the pull up module in response to a driving pulse of a previous one stage of the shift register, a pre-pull-down module coupled to a previous two stage of the shift register and a first node for pulling down voltage level of the first node in response to a output pulse of the previous two stage of the shift register, a pull down module coupled to the first node for pulling down voltage level of the first node in response to a pulling-down triggering signal, and a pulling down driving module for providing the pulling-down triggering signal.
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