Patent ID: 8081731
Filing Date: 2011-12-20
Classification: G09G,G11C

Abstract:
1. A shift register, comprising a plurality of electrically connected shift units, wherein each shift unit comprises: a pull-up circuit, for outputting a first signal to an output node according to the first signal and a voltage level of a driving node; a pull-up driving circuit, electrically connected to the pull-up circuit, for driving the pull-up circuit according to an output voltage of the previous shift unit; a pull-down driving circuit, electrically connected to the pull-up driving circuit, for outputting a low voltage level to the driving node and the output node, according to the first signal and a second signal, comprising: a pull-down circuit, electrically connected to the pull-up circuit and the pull-up driving circuit, for resetting the pull-up driving circuit according to the voltage level of the output node, and outputting the low voltage level to the driving node and the output node according to a third signal and a fourth signal.