Shift register unit, gate driving apparatus and display device

A shift register unit comprising a driving module and an output module;

• wherein the driving module is connected to the output module, and a connection point where the driving module is connected to the output module is a pull-up node;
• the driving module is configured to control a signal at the pull-up node to be at a first level when a forward selection signal is at the first level and a forward scan signal is at the first level;
• is configured to control the signal at the pull-up node to be at the first level when the forward selection signal is changed from the first level to a second level and the forward scan signal is at the first level;
• is configured to control the signal at the pull-up node to be at the second level when the forward scan signal is at the first level and a reverse selection signal is at a first level;
• is configured to control the signal at the pull-up node to be at the first level when the reverse selection signal is at the first level and the reverse scan signal is at the first level;
• is configured to control the signal at the pull-up node to be at the first level when the reverse selection signal is changed from the first level to the second level and the reverse scan signal is at the first level;
• and is configured to control the signal at the pull-up node to be at the second level when the reverse scan signal is at the first level and the forward selection signal is at the first level;
• the output module is configured to output a received clock signal from an output terminal of the shift register unit when the signal at the pull-up node is at the first level, and is configured to control the output terminal of the shift register unit to stop outputting the received clock signal when the signal at the pull-up node is at the second level;
• wherein the forward selection signal is a signal output from the output terminal of another shift register unit at a stage previous to that of the shift register unit, and the reverse selection signal is a signal output from the output terminal of another shift register unit subsequent to that of the shift register unit.