Shift register unit and driving method thereof, gate driving circuit, and display device

A gate driving circuit, comprising a plurality of shift register units,

• wherein the plurality of shift register units are cascaded, and each shift register unit in the plurality of shift register units comprises:
• a first input circuit, a second input circuit, an output circuit, and a compensation circuit,
• the first input circuit is connected to a first node, and is configured to write a first input signal to the first node in response to a first control signal;
• the second input circuit is connected to the first node and a second node, and is configured to input a second input signal to the second node in response to a detection control signal and configured to transmit a level of the second node to the first node in response to a second control signal;
• the compensation circuit is connected to the second node, and is configured to compensate the level of the second node;
• and
• the output circuit is connected to the first node and an output terminal, and is configured to output a composite output signal to the output terminal under control of a level of the first node.

A driving method for driving a shift register unit, wherein one frame comprises a display period and a blanking period, the display period comprises a first input phase and a first output phase, the blanking period comprises a second input phase and a second output phase, the shift register unit comprises:

• a first input circuit, a second input circuit, an output circuit, and a compensation circuit,
• the first input circuit is connected to a first node, and is configured to write a first input signal to the first node in response to a first control signal;
• the second input circuit is connected to the first node and a second node, and is configured to input a second input signal to the second node in response to a detection control signal and configured to transmit a level of the second node to the first node in response to a second control signal;
• the compensation circuit is connected to the second node, and is configured to compensate the level of the second node;
• the output circuit is connected to the first node and an output terminal, and is configured to output a composite output signal to the output terminal under control of a level of the first node;
• and
• the driving method comprises:
• in the first input phase, in response to the first control signal, the first input circuit writing the first input signal to the first node;
• in the first output phase, under control of the level of the first node, the output circuit outputting the composite output signal to the output terminal;
• in the second input phase, the compensation circuit compensating the level of the second node, and in respond to the second control signal, the second input circuit transmitting the level of the second node to the first node;
• and
• in the second output phase, the output circuit outputting the composite output signal to the output terminal under control of the level of the first node.