Pixel circuit and display device

1. A pixel circuit, comprising: a data writing circuit, a storage capacitor circuit, a driving circuit, a light-emitting duration control circuit, and a light-emitting device, wherein

the data writing circuit is configured to, in response to a gate driving signal provided by a gate line, write a display data voltage on a display data line to a control end of the driving circuit;

a first end of the storage capacitor circuit is electrically connected to a control end of the driving circuit, and a second end of the storage capacitor circuit is electrically connected to a first voltage end;

a first end of the driving circuit is electrically connected to a power supply voltage line, a second end of the driving circuit is electrically connected to the light-emitting device via the light emitting duration control circuit, and the driving circuit is configured to, in response to a potential of a control end of the driving circuit, enable the first end of the driving circuit to electrically connect to the second end of the driving circuit;

the light-emitting duration control circuit is configured to, in response to a duration data voltage provided by a duration data line, turn on or turn off an electrical connection between the second end of the driving circuit and the light-emitting device, to control a light-emitting duration of the light-emitting device,

wherein the light-emitting duration control circuit comprises a switch control circuit, a duration data voltage writing circuit and a holding capacitor circuit, wherein

the duration data voltage writing circuit is configured to, in response to a duration control signal provided by a duration control line, write the duration data voltage provided by the duration data line to a first end of the holding capacitor circuit;

the first end of the holding capacitor circuit is electrically connected to a control end of the switch control circuit, and a second end of the holding capacitor circuit is electrically connected to a second voltage end;

the switch control circuit is configured to, in response to a potential of the first end of the holding capacitor circuit, turn on or turn off the electrical connection between the second end of the driving circuit and the light-emitting device.

2. The pixel circuit according to claim 1 , wherein the duration data voltage writing circuit comprises a duration data voltage writing transistor;

a control electrode of the duration data voltage writing transistor is electrically connected to the duration control line, a first electrode of the duration data voltage writing transistor is electrically connected to the duration data line, and a second electrode of the duration data voltage writing transistor is electrically connected to the first end of the holding capacitor circuit.

3. The pixel circuit according to claim 2 , wherein the holding capacitor circuit is configured to hold the potential of the first end of the holding capacitor circuit to be equal to a potential of the duration data voltage in a case that the duration data voltage writing circuit writes the duration data voltage to the first end of the holding capacitor circuit.

4. The pixel circuit according to claim 2 , wherein the duration data voltage writing transistor is an NMOS transistor.

5. The pixel circuit according to claim 1 , wherein the holding capacitor circuit includes a capacitor, a first end of the capacitor is electrically connected to the control end of the switch control circuit, and a second end of the capacitor is electrically connected to the second voltage end.

6. The pixel circuit according to claim 1 , wherein the switch control circuit comprises a switch transistor;

a control electrode of the switch transistor is electrically connected to the first end of the holding capacitor circuit, a first electrode of the switch transistor is electrically connected to the second end of the driving circuit, and a second electrode of the switch transistor is electrically connected to the light-emitting device.

7. The pixel circuit according to claim 6 , wherein the switch transistor is an NMOS transistor.

8. The pixel circuit according to claim 1 , further comprising a light-emitting control circuit, wherein

the first end of the driving circuit is electrically connected to the power supply voltage line via the light-emitting control circuit, and the light-emitting control circuit is configured to, in response to a light-emitting control signal provided by a light-emitting control line, enable the first end of the driving circuit to electrically connect to the power supply voltage line.

9. The pixel circuit according to claim 8 , wherein the driving circuit comprises a driving transistor, a control electrode of the driving transistor is connected to the first end of the storage capacitor circuit, a first electrode of the driving transistor is connected to a second end of the light-emitting control circuit, and a second electrode of the driving transistor is connected to a first end of the light-emitting duration control circuit.

10. The pixel circuit according to claim 9 , wherein the light-emitting control circuit comprises a light-emitting control transistor, wherein a control electrode of the light-emitting control transistor is electrically connected to the light-emitting control line, a first electrode of the light-emitting control transistor is connected to the power supply voltage line, and a second electrode of the light-emitting control transistor is connected to the first electrode of the driving transistor.

11. The pixel circuit according to claim 10 , wherein the light-emitting control transistor is a PMOS transistor.

12. The pixel circuit according to claim 1 , wherein the gate line comprises a first gate line and a second gate line;

the data writing circuit comprises a first data writing transistor and a second data writing transistor;

a gate of the first data writing transistor is connected to the first gate line, a source of the first data writing transistor is connected to the data line, and a drain of the first data writing transistor is connected to the first end of the storage capacitor circuit;

a gate of the second data writing transistor is connected to the second gate line, a drain of the second data writing transistor is connected to the data line, and a source of the second data writing transistor is connected to the first end of the storage capacitor circuit;

the first data writing transistor is a type-P transistor, and the second data writing transistor is a type-N transistor.

13. The pixel circuit according to claim 1 , wherein the light-emitting device is an organic light-emitting device.

14. A display device comprising the pixel circuit according to claim 1 .

15. A pixel circuit, comprising: a data writing circuit, a storage capacitor circuit, a driving circuit, a light-emitting duration control circuit, a light-emitting device, and a light-emitting control circuit, wherein

the data writing circuit is configured to, in response to a gate driving signal provided by a gate line, write a display data voltage on a display data line to a control end of the driving circuit;

a first end of the storage capacitor circuit is electrically connected to a control end of the driving circuit, and a second end of the storage capacitor circuit is electrically connected to a first voltage end;

a first end of the driving circuit is electrically connected to a power supply voltage line, a second end of the driving circuit is electrically connected to the light-emitting device via the light emitting duration control circuit, and the driving circuit is configured to, in response to a potential of a control end of the driving circuit, enable the first end of the driving circuit to electrically connect to the second end of the driving circuit;

the light-emitting duration control circuit is configured to, in response to a duration data voltage provided by a duration data line, turn on or turn off an electrical connection between the second end of the driving circuit and the light-emitting device, to control a light-emitting duration of the light-emitting device,

the first end of the driving circuit is electrically connected to the power supply voltage line via the light-emitting control circuit, and the light-emitting control circuit is configured to, in response to a light-emitting control signal provided by a light-emitting control line, enable the first end of the driving circuit to electrically connect to the power supply voltage line.