| 摘要 |
<p>A gate drive circuit on array, a shift register and a display screen. The gate drive circuit on array includes a first thin film transistor (TFT) (M1), a second TFT (M2), a third TFT (M3), a fourth TFT (M4), a capacitor (C1) and a pull-down module (11). The pull-down module (11) is connected between a first clock signal input end (X), a second clock signal input end (Y), a first node (PU) and an output end (OUTPUT) and connected to a low level signal end (VGL) for keeping the first node (PU) and the output end (OUTPUT) to be low level during the non-operating time of the gate drive circuit on array. The present invention relates to the technical field of liquid crystal display, and enables the gate drive circuit on array to realize bidirectional scanning by designing the functions of the input end (INPUT) and reset end (RESET) to be symmetric without changing the charging and discharging properties of the node, which ensures the reliability and stability of the circuit.</p> |
