Gate drive unit, gate drive circuit, drive method and display apparatus

A display apparatus, comprising a gate drive circuit which comprises cascaded gate drive units, wherein each of the gate drive units comprise an input control module, an input module, a potential pull-down module, a first output module, a second output module, an isolation module, a first node and a second node;

• wherein,
• the input control module is configured to control operation of the input module under action of a second input signal and a first clock signal;
• the input module is configured to transmit a second clock signal to the second node under control of the input control module;
• the potential pull-down module is configured to pull down a potential of the second node under action of a potential of the first node;
• the first output module is configured to output a first output signal under action of the potential of the first node, the potential of the second node and the first clock signal;
• the second output module is configured to output a second output signal under action of a first input signal and the potential of the first node;
• the isolation module is configured to isolate influence of the first node on the first output signal under action of a feedback signal of the first output module;
• a first output node of each level of gate drive unit is respectively connected to a gate lines which is in one-to-one correspondence with the first output node;
• the first output signal and the second output signal of each of the other gate drive units except a first level of gate drive unit and a last level of gate drive unit respectively serve as a first input signal and a second input signal of a subsequent level of gate drive unit;
• the gate drive circuit further comprises a first clock signal line and a second clock signal line which are connected to each gate drive unit, wherein the first clock signal line is configured to provide the first clock signal and the second clock signal line is configured to provide the second clock signal.

A drive method for a gate drive unit, wherein,

• the gate drive unit comprises an input control module, an input module, a potential pull-down module, a first output module, a second output module, an isolation module, a first node and a second node;
• wherein,
• the input control module is configured to control operation of the input module under action of a second input signal and a first clock signal;
• the input module is configured to transmit a second clock signal to the second node under control of the input control module;
• the potential pull-down module is configured to pull down a potential of the second node under action of a potential of the first node;
• the first output module is configured to output a first output signal under action of the potential of the first node, the potential of the second node and the first clock signal;
• the second output module is configured to output a second output signal under action of a first input signal and the potential of the first node;
• the isolation module is configured to isolate influence of the first node on the first output signal under action of a feedback signal of the first output module;
• the drive method comprises:
• the input control module prohibiting the input module from operating under the action of the second input signal;
• the potential pull-down module pulling down the potential of the second node under the action of the first node potential;
• the first output module outputting the first clock signal and prohibiting the isolation module from operating under the action of the potential of the first node;
• the second output module outputting a high-level signal under the action of the first input signal;
• the input control module prohibiting the input module from operating under the action of the first clock signal;
• the potential pull-down module pulling down the potential of the second node under the action of the potential of the first node;
• the first output module outputting the first clock signal and enabling the isolation module to operate under the action of the potential of the first node, and the isolation module isolating the influence of the potential of the first node on the first output signal;
• the second output module outputting a high-level signal under the action of the potential of the first node;
• the input control module enabling the input module to operate under the action of the first clock signal and the second input signal;
• the input module pulling up the potential of the second node, pulling down the potential of the first node and prohibiting the potential pull-down module from operating under the action of the second clock signal;
• the first output module outputting a low-level signal and prohibiting the isolation module from operating under the action of the potential of the second node;
• the second output module outputting a low-level signal under the action of the potential of the first node;
• and
• the input control module prohibiting the input module from transmitting the second clock signal under the action of the first clock signal and the second input signal;
• the input module pulling down the potential of the first node and prohibiting the potential pulling-down module from operating under the action of the potential of the second node;
• the first output module outputting a low-level signal and prohibiting the isolation module from operating under the action of the potential of the second node;
• the second output module outputting a low-level signal under the action of the potential of the first node.