Shift register and display device

A display device, comprising:

• a display panel;
• and
• a shift register configured to drive the display panel, the shift register comprising:
• a pre-charge unit configured to receive a first input signal and a second input signal and output a pre-charge signal via a first node based on the first input signal and the second input signal;
• a pull-up unit that is coupled to the pre-charge unit, the pull-up unit configured to receive the pre-charge signal and a clock signal and output a scan signal via a second node based on the pre-charge signal and the clock signal;
• a first pull-down unit coupled to the pre-charge unit and the pull-up unit, the first pull-down unit configured to receive the pre-charge signal, a first pull-down control signal and a second pull-down control signal and control whether to pull down the scan signal to a reference voltage level based on the pre-charge signal, the first pull-down control signal and the second pull-down control signal;
• and
• a second pull-down unit coupled to the pre-charge unit and the pull-up unit, the second pull-down unit configured to receive the pre-charge signal, the first pull-down control signal and the second pull-down control signal and control whether to keep the scan signal at the reference voltage level based on the pre-charge signal, the first pull-down control signal and the second pull-down control signal;
• wherein a period of the first pull-down control signal and a period of the second pull-down control signal are in a range from 12 frames to 180 frames, and a time interval between a rising edge of the first pull-down control signal and a falling edge of the second pull-down control signal is in a range from 2 microseconds to 4 microseconds.

A display device, comprising:

• a display panel;
• and
• a gate driver configured to drive the display panel and having 1st-Nth stage shift registers, wherein the ith stage shift register of the 1st-Nth stage shift registers comprises:
• a pre-charge unit configured to receive a first input signal and a second input signal and output a pre-charge signal via a first node based on the first input signal and the second input signal;
• a pull-up unit that is coupled to the pre-charge unit, the pull-up unit configured to receive the pre-charge signal and a clock signal of a plurality of first clock signals and output an ith stage scan signal via a second node based on the pre-charge signal and the clock signal;
• a first pull-down unit coupled to the pre-charge unit and the pull-up unit, the first pull-down unit configured to receive the pre-charge signal, a first pull-down control signal and a second pull-down control signal and control whether to pull down the ith stage scan signal to a reference voltage level based on the pre-charge signal, the first pull-down control signal and the second pull-down control signal;
• and
• a second pull-down unit coupled to the pre-charge unit and the pull-up unit, the second pull-down unit configured to receive the pre-charge signal, the first pull-down control signal and the second pull-down control signal and control whether to keep the ith stage scan signal at the reference voltage level based on the pre-charge signal, the first pull-down control signal and the second pull-down control signal;
• wherein a period of the first pull-down control signal and a period of the second pull-down control signal are in a range from 12 frames to 180 frames, a time interval between a rising edge of the first pull-down control signal and a falling edge of the second pull-down control signal is in a range from 2 microseconds to 4 microseconds, N is an integer, and i is an integer from 1 to N.