SHIFT REGISTER UNIT, DISPLAY PANEL AND DISPLAY DEVICE

摘要

A shift register unit comprises a latch circuit (21) and a transmission circuit (22). The latch circuit (21) conducts a NOR operation on a clock signal received by a first clock signal end thereof and a low level signal and then outputs same when a selection signal is at a high level; in a first low level time period of the selection signal, conducts a NOR operation on a signal obtained after a NOT operation is conducted on the signal output by the latch circuit (21) when the selection signal is at a high level and a feedback signal, and then outputs same; and in a time period in which the selection signal is at a low level, outputs a low level signal in time periods except the first low level time period of the selection signal. The transmission circuit (22) outputs a signal related to a clock signal received at a first clock signal end thereof when the output of the latch circuit (21) is at a high level; and outputs a level signal when the output of the latch circuit (21) is at a low level.