A shift register having an amorphous silicon thin film transistor for
decreasing a distortion of the output signal is disclosed. In the shift
register having a plurality of stages for shifting an input signal using
first and second driving voltages, first and second clock signals and a
start pulse, each of said plurality of stages includes an output buffer
for selectively applying any one of the first and second clock signals
and the second driving voltage to an output line under control of first
and second nodes; a pre-charger for pre-charging the first driving
voltage into the first node in response to said start pulse; a second
node controller for selectively supplying the first and second driving
voltages to the second node in such a manner to be opposite to the first
node using said start pulse and an output signal of the next stage; and a
first node controller for supplying the second driving voltage to the
first node in a time interval excluding the time interval for said
pre-charging.