GOA circuit

A GOA circuit, applied to a liquid crystal display panel and comprising m cascaded GOA units, wherein an n-th GOA unit includes an output control module, a forward and backward scanning control module, a node signal control module, a second pull-down circuit, a first pull-down circuit and a pull-up circuit, where m≥n≥1, and wherein

• the forward and backward scanning control module is configured to control the GOA circuit to perform a forward scanning or a backward scanning according to a forward scanning control signal or a backward scanning control signal;
• the output control module is connected to the forward and backward scanning control module and is configured to control an output of an n-th gate driving signal during the forward scanning or the backward scanning in the GOA circuit;
• the first pull-down circuit comprises a seventh thin film transistor, a first terminal of the seventh thin film transistor is connected with the output control module, and a second terminal of the seventh thin film transistor is connected with a low-level signal;
• the second pull-down circuit comprises a fifth thin film transistor, a first terminal of the fifth thin film transistor is connected to a second global control signal, and a second terminal of the fifth thin film transistor is connected to a third terminal of the seventh thin film transistor;
• the node signal control module is connected to a third terminal of the fifth thin film transistor and configured to output a clock signal to the fifth thin film transistor so as to control the ON-OFF of the fifth thin film transistor;
• the pull-up circuit includes an eighth thin film transistor having a first terminal connected to the third terminal of the seventh thin film transistor, a second terminal and a third terminal respectively connected to a low-level signal and a first global control signal;
• the pull-up circuit further comprises a thirteenth TFT;
• a first terminal and a third terminal of the thirteenth TFT are both connected to the third terminal of the eighth TFT, and a second terminal of the thirteenth TFT is connected to the first terminal of the seventh TFT;
• and wherein
• the first terminal is one of a source and a drain, the second terminal is the other of the source and the drain, and the third terminal is a gate, and after the liquid crystal display panel is powered off, the second global control signal is at a low level.