Shift register circuit and drive method thereof, scan drive circuit and display device

A shift register circuit comprising an input terminal, a reset terminal and an output terminal, further comprising:

• an input circuit connected to the input terminal and a first node respectively, and configured to, when the input terminal is at an active level, set the first node to an active level;
• an output circuit connected to the first node and the output terminal respectively, and configured to, when the first node is at the active level, set the output terminal to an active level with use of a clock signal;
• a reset circuit connected to the reset terminal, the first node and the output terminal respectively, and configured to, when the reset terminal is at the active level, set the first node and the output terminal to an inactive level;
• a pull down control circuit connected to the reset terminal and a second node respectively, and configured to set the second node to an active level in a time period in which the first node is at the active level, and to cause a potential at the second node to change in a direction of getting away from the inactive level when the reset terminal is changed from the inactive level to the active level;
• a first pull down circuit connected to the second node and the output terminal respectively, and configured to, when a control signal which is connected thereto is at the active level and the second node is at the active level, set the output terminal to the inactive level at a rate which is corresponding to the potential at the second node,
• wherein the pull down control circuit includes a first transistor and a first capacitor,
• wherein the first transistor has a gate connected to the input terminal or the first node, a first pole connected to the first node, and a second pole connected to the second node so that a current flows between the first node and the second node when the gate is at an active level, and
• wherein the first capacitor has a first terminal connected to the second node and a second terminal connected to the reset terminal.