Shift register and the driving method thereof, gate driving apparatus and display apparatus

A shift register, comprising a pull-up unit, a reset unit and a signal output, wherein,

• said pull-up unit is connected to said signal output and is configured to pull up an output signal, so that the output signal is at high level;
• said reset unit is connected to a control end of said pull-up unit and said signal output respectively, and is configured to reset the potential of the control end of said pull-up unit after said output signal is at high level, so that said output signal is at low level;
• and
• wherein said shift register further comprises a pull-down unit;
• said pull-down unit is connected to a control end of said pull-up unit and said signal output respectively and is configured to pull down the potential of the control end of said pull-up unit and said output signal after said reset unit has reset the potential of the control end of said pull-up unit, so that said pull-up unit switches off to control said output signal to maintain a low level.