| 主权项 |
1. A scan driving circuit, comprising:
a pull-up assembly; a pull-up control assembly that drives the pull-up assembly; a pull-down maintaining assembly; and a reference low-level signal comprising a first reference low-level signal and a second reference low-level signal; wherein an output end of the pull-up assembly is coupled to a current scanning line, an output end of the pull-up control assembly is connected to a control end of the pull-up assembly, electric potential of the second reference low-level signal is less than electric potential of the first reference low-level signal; when the current scanning line is inactive, the second reference low-level signal is sent to the output end of the pull-up control assembly through the pull-down maintaining assembly, and the first reference low-level signal is also sent to the current scanning line through the pull-down maintaining assembly; wherein the pull-down maintaining assembly comprises a first pull-down maintaining assembly, the first pull-down maintaining assembly comprises a first pull-down maintaining unit and a first pull-down maintaining control unit that drives the first pull-down maintaining unit; the first pull-down maintaining unit comprises a first controllable switch and a second controllable switch, the pull-down maintaining signal comprises a first pull-down maintaining signal, wherein the first pull-down maintaining signal is sent to control ends of the first controllable switch and the second controllable switch through the first pull-down maintaining control unit; the second reference low-level signal is sent to the output end of the pull-up control assembly through the second controllable switch, and the first reference low-level signal is sent to the current scanning line through the first controllable switch; electric potential of the pull-down maintaining signal, that is at a low level, is less than electric potential of the second reference low-level signal; when the current scanning line is inactive, the first pull-down maintaining control unit controls the first controllable switch and the second controllable switch to turn on according to the first pull-down maintaining signal, the first controllable switch controls the second reference low-level signal to be sent to the output end of the pull-up control assembly, and the second controllable switch controls the first reference low-level signal to be sent to the current scanning line; when the current scanning line is active, the first controllable switch and the second controllable switch turn off, the first controllable switch controls the second reference low-level signal not to be sent to the output end of the pull-up control assembly, and the second controllable switch controls the first reference low-level signal not to be sent to the current scanning line. |
