Pixel circuit, driving method, organic light emitting display panel, and display device

A pixel circuit, including:

• a threshold compensation sub-circuit, a capacitor sub-circuit, a light emitting control sub-circuit, a data writing sub-circuit, a driving sub-circuit, and a light emitting sub-circuit;
• wherein:
• the capacitor sub-circuit has a first terminal connected to a first reference signal terminal, a second terminal connected to a first node, and a third terminal connected to a second node;
• the threshold compensation sub-circuit has a first terminal connected to a reset signal terminal, a second terminal connected to a data signal terminal, a third terminal connected to the first node, a fourth terminal connected to a first terminal of the light emitting control sub-circuit and a first terminal of the driving sub-circuit respectively, a fifth terminal connected to the second node, a sixth terminal connected to an initialization signal terminal, and a seventh terminal connected to a first terminal of the light emitting sub-circuit and a second terminal of the light emitting control sub-circuit respectively;
• a second terminal of the light emitting sub-circuit is connected to a second reference signal terminal;
• the threshold compensation sub-circuit is configured to transmit a reference signal provided by the data signal terminal to the first node, and transmit an initialization signal provided by the initialization signal terminal to the second terminal of the light emitting control sub-circuit, connect the first terminal of the light emitting control sub-circuit and the first terminal of the driving sub-circuit to the second node respectively to store a threshold voltage of the driving sub-circuit through the capacitor sub-circuit under the control of the reset signal terminal;
• the data writing sub-circuit has a first terminal connected to a scan signal terminal, a second terminal connected to the data signal terminal, and a third terminal connected to the first node;
• the data writing sub-circuit is configured to transmit a data signal provided by the data signal terminal to the first node, and store a voltage of the data signal through the capacitor sub-circuit under the control of the scan signal terminal;
• and
• a third terminal of the light emitting control sub-circuit is connected to a light emitting control signal terminal;
• a second terminal of the driving sub-circuit is connected to the second node, and a third terminal of the driving sub-circuit is connected to the first reference signal terminal;
• the light emitting control sub-circuit is configured to connect the first terminal of the driving sub-circuit and the first terminal of the light emitting sub-circuit under the control of the light emitting control signal terminal to cause the light emitting sub-circuit to emit light.