Pixel circuit with separated threshold voltage compensation and data write phases and driving method therefor, and display panel

A pixel circuit, comprising:

• a drive module;
• a storage module electrically connected to a control terminal of the drive module and a first terminal of the drive module and configured to store a potential difference between the control terminal of the drive module and the first terminal of the drive module;
• a coupling module, a first terminal of the coupling module electrically connected to the first terminal of the drive module, and the coupling module configured to couple a potential variation at a second terminal of the coupling module to the first terminal of the coupling module;
• a first reset module electrically connected to the second terminal of the coupling module and configured to transmit a first reset signal to the second terminal of the coupling module to reset the second terminal of the coupling module before a data write phase;
• a second reset module electrically connected to the control terminal of the drive module and configured to transmit a second reset signal to the control terminal of the drive module in at least a threshold compensation phase and the data write phase;
• a discharge module electrically connected to a second terminal of the drive module is configured to be turned on in the threshold compensation phase, the first terminal of the drive module discharges through the drive module and the discharge module to store a threshold voltage of the drive module in the storage module;
• a data write module electrically connected to the second terminal of the coupling module and configured to receive a data voltage;
• and
• a light emission control module connected to the drive module and a light-emitting element between a first power supply and a second power supply, wherein a control terminal of the first reset module is configured to receive a first control signal, and the first reset module is configured to, in response to the first control signal, be turned on in a reset phase and the threshold compensation phase to transmit the first reset signal to the second terminal of the coupling module;
• a control terminal of the discharge module is configured to receive the first control signal, and the discharge module is configured to, in response to the first control signal, be turned on in the reset phase to transmit the second reset signal to the second terminal of the drive module and be turned on in the threshold compensation phase to make the first terminal of the drive module discharge through the drive module and the discharge module;
• a control terminal of the data write module is configured to receive a second control signal, and the data write module is configured to, in response to the second control signal, be turned on in the data write phase to write the data voltage to the second terminal of the coupling module;
• and
• a control terminal of the light emission control module is configured to receive a light emission control signal, and the light emission control module is configured to, in response to the light emission control signal, be turned on in the reset phase and a light emission phase, wherein the second reset module comprises:
• a second reset unit electrically connected to the control terminal of the drive module and configured to, in response to the first control signal, be turned on in the reset phase and the threshold compensation phase to transmit the second reset signal to the control terminal of the drive module;
• and
• a data write auxiliary unit electrically connected to the control terminal of the drive module and configured to, in response to the second control signal, be turned on in the data write phase to transmit the second reset signal to the control terminal of the drive module.