Shift register circuitry, display and shift register

A display comprising:

• a plurality of pixels;
• a data driver coupled to the pixels configured to individually provide display signals to the pixels;
• a signal generating circuit comprising:
• a first clock output end configured to provide a first clock;
• a second clock output end configured to provide a second clock other than the first clock;
• a first enabling signal output end configured to provide a first enabling signal;
• a second enabling signal output end configured to provide a second enabling signal other than the first enabling signal;
• a power supply circuit comprising:
• a high reference voltage output end configured to provide a high reference voltage;
• and
• a low reference voltage output end configured to provide a low reference voltage;
• and
• a scan driver, coupled to the pixels configured to provide a plurality of scan signals to control the pixels individually receiving display signals, comprising:
• a shift register circuitry comprising a plurality of stages of shift registers, each of the plurality of stages of shift registers is used configured to provide an unmodified scan signal and a modified scan signal of the each of the plurality of stages of shift registers, an Nth stage shift register of the plurality of stages of shift registers comprising:
• an output unit, coupled to a register control end of the Nth stage shift register configured to receive a first clock, and outputting an unmodified Nth stage scan signal from a first output end of the Nth shift register according to the first clock and voltage level of the register control end;
• an input unit, coupled to the output unit through the register control end, configured to receive the second clock, receiving an unmodified (N−M) stage scan signal provided by an (N−M)th stage shift register of the plurality of stages of shift registers, and controlling the voltage level of the register control end according to the unmodified (N−M)th stage scan signal and the second clock;
• a first control unit, coupled to the register control end, configured to receive the low reference voltage, the high reference voltage and the voltage level of the register control end, and controlling voltage level of an output end of the first control unit according to the voltage level of the register control end;
• a first pull-up unit, coupled to the output end of the output end of the first control unit and the register control end, configured to receive the high reference voltage and the voltage level of the output end of the first control unit, and controlling the voltage level of the register control end according to the voltage level of the output end of the first control unit;
• a second pull-up unit, coupled to the output end of the first control unit and the output unit, configured to receive the high reference voltage, and controlling the voltage level of an output end of the Nth stage shift register;
• and
• a modification circuit, coupled to the output end of the first control unit and the first output end of the Nth stage shift register, configured to receive the unmodified Nth stage scan signal, the high reference voltage, the second clock, a first enabling signal and a second enabling signal, and generating a modified Nth stage scan signal at a second output end of the Nth stage shift register according to the unmodified Nth stage scan signal.

A shift register comprising:

• an output unit comprising a first switch having a first end configured to receive a first clock, a second end configured to output an unmodified Nth stage scan signal, and a control end coupled to a register control end of the shift register;
• an input unit comprising:
• a second switch having a first end, a control end configured to receive a second clock, and a second end configured to receive an unmodified (N−M)th stage scan signal;
• a third switch having a first end coupled to the second end of the second switch, a control end configured to receive the second clock, and a second end coupled to the register control end;
• and
• a fourth switch having a first end coupled to a first output end of the Nth stage shift register, a second end coupled to the first end of the second switch, and a control end coupled to the first end of the fourth switch;
• a first control unit comprising:
• a switch set having a first end and a control end configured to receive a low reference voltage;
• and
• a fifth switch having a first end coupled to a second end of the switch set, a control end coupled to the register control end, and a second end configured to receive a high reference voltage;
• a first pull-up unit, configured to pull up voltage level of the register control end, having a first end coupled to the first end of the register control end, a control end, and a second end configured to receive the high reference voltage;
• a second pull-up unit having a first end configured to output the unmodified Nth stage scan signal, a control end coupled to the first control unit, and a second end configured to receive the high reference voltage;
• and
• a modification circuit comprising:
• a sixth switch having a first end coupled to the control end of the first pull-up unit, a control end configured to receive a first enabling signal, and a second end coupled to the first output end of the Nth shift register;
• a seventh switch having a first end configured to output the modified Nth stage scan signal, a control end coupled to an output end of the first control unit, and a second end configured to receive the high reference voltage;
• an eighth switch having a first end coupled to the first end of the seventh switch, a second end configured to receive the second clock, and a control end configured to receive the high reference voltage;
• a ninth switch having a first end configured to receive a second enabling signal, a control end coupled to the first end of the sixth switch, and a second end coupled to the first end of the seventh switch;
• and
• a tenth switch having a first end coupled to the first end of the seventh switch, a control end configured to receive the first enabling signal, and a second end configured to receive the high reference voltage.