Shift register unit and method for driving the same, gate driving circuit, array substrate and display apparatus

A shift register unit, comprising an input signal terminal configured to receive an input signal, a first voltage signal terminal configured to receive a first voltage signal, a first clock signal terminal configured to receive a first clock signal, a second clock signal terminal configured to receive a second clock signal and an output signal terminal configured to output a gate driving signal, the shift register unit further comprising:

• an input sub-circuit configured to receive the input signal and output a pull-up signal according to the input signal;
• a first output sub-circuit configured to receive the first voltage signal and the first clock signal, and output a first output signal to the output signal terminal according to the first voltage signal and the first clock signal, so that the output signal terminal outputs a gate driving signal having a first valid level;
• and
• a second output sub-circuit configured to receive the pull-up signal and the second clock signal, and output a second output signal to the output signal terminal according to the pull-up signal and the second clock signal, so that the output signal terminal outputs a gate driving signal having a second valid level, wherein an absolute value of the second valid signal is greater than an absolute value of the first valid level.