SHIFT REGISTER UNIT, SHIFT REGISTER, DISPLAY PANEL AND DISPLAY DEVICE

摘要

A shift register unit includes: a discharging TFT, a source electrode and a drain electrode of which are connected to a first low level signal input end and a pull-up node respectively; and a first discharging control unit connected to a gate electrode of the discharging TFT and configured to output a first control signal to the gate electrode of the discharging TFT between a first and a second time points, so as to enable the discharging TFT to be in an on state and output a first low level signal to the pull-up node, thereby to discharge the pull-up node. The first time point is a time point when the processing of a first frame by the shift register is ended, and the second time point is a time point when the processing of a second frame adjacent to the first frame by the shift register is started.

主权项

1. A shift register unit, a plurality of which is cascaded to form a shift register, the shift register unit comprising a bootstrapping capacitor connected between a current-level driving output node and a pull-up node,
the shift register unit further comprising: a first low level signal input end configured to receive a first low level signal; a discharging thin film transistor (TFT), a source electrode and a drain electrode of which are connected to the first low level signal input end and the pull-up node respectively; and a first discharging control unit connected to a gate electrode of the discharging TFT and configured to output a first control signal to the gate electrode of the discharging TFT between a first time point and a second time point, so as to enable the discharging TFT to be in an on state, thereby to output the first low level signal to the pull-up node and discharge the pull-up node, wherein the first time point is a time point when processing of a first frame by the shift register is ended, and the second time point is a time point when processing of a second frame adjacent to the first frame by the shift register is started.