GOA unit and driving method thereof, GOA circuit, display device

A GOA unit of a light emitting control signal, comprising a potential control module, a pull-up module, a pull-down module and a writing module;

• the potential control module being connected to a first voltage terminal, a second voltage terminal, a first clock signal terminal, a second clock signal terminal, a signal input terminal and a first node, respectively;
• and being configured to output the signal from the second voltage terminal to the first node under control of the first clock signal terminal and the first voltage terminal;
• and/or to output the signal from the second clock signal terminal to the first node under control of the first clock signal terminal, the first voltage terminal and the signal input terminal;
• the pull-down module being connected to the first node, the first voltage terminal, the second voltage terminal, the first clock signal terminal, the second clock signal terminal and a signal output terminal, respectively;
• and being configured to output the signal from the first voltage terminal to the signal output terminal under control of the first node, the first voltage terminal, the second voltage terminal, the first clock terminal and the second clock signal terminal;
• the pull-up module being connected to the first node, the second voltage terminal and the signal output terminal, respectively;
• and being configured to output the signal from the second voltage terminal to the signal output terminal under control of the first node;
• the writing module being connected to the second voltage terminal, a signal control terminal and the signal output terminal, respectively;
• and being configured to output the voltage of the second voltage terminal to the signal output terminal under control of the signal control terminal;
• wherein, the potential control module comprises a pull-up control module and a pull-down control module;
• the pull-up control module is connected to the pull-down control module, the first clock signal terminal, the first voltage terminal, the second voltage terminal and the first node, respectively, and is configured to output the signal from the second voltage terminal to the first node under the control of the first clock signal terminal and the first voltage terminal;
• and
• the pull-down control module is connected to the signal input terminal, the first clock signal terminal, the second clock signal terminal, the first voltage terminal and the first node, respectively, and is configured to output the signal from the second clock signal terminal to the first node under the control of the signal input terminal, the first clock signal terminal and the first voltage terminal;
• wherein, the pull-down control module comprises a sixth transistor, a seventh transistor, an eighth transistor and a second capacitor;
• a gate of the sixth transistor is connected to the first clock signal terminal, a first electrode of the sixth transistor is connected to the signal input terminal, and a second electrode of the sixth transistor is connected to a first electrode of the seventh transistor;
• a gate of the seventh transistor is connected to the first voltage terminal, and a second electrode of the seventh transistor is connected to a gate of the eighth transistor;
• a first electrode of the eighth transistor is connected to the second clock signal terminal, and a second electrode of the eighth transistor is connected the first node;
• and
• a first end of the second capacitor is connected to the gate of the eighth transistor, and a second end of the second capacitor is connected to the second electrode of the eighth transistor.