Pixel circuit

1. A pixel circuit, comprising a first sub-pixel circuit and a second sub-pixel circuit; the first sub-pixel circuit comprising a first light-emitting element and the second sub-pixel circuit comprising a second light-emitting element, wherein the first light-emitting element emits light in a first half of a frame period, and the second light-emitting element emits light in the second half of the frame period;

wherein the first sub-pixel circuit comprises:

a storage capacitor, connected between a first node and a first voltage input end;

a first transistor, connected between the first node and a second voltage input end, wherein a reference voltage is input to the second voltage input end;

a third transistor, connected between a second node and a data line input end;

a fourth transistor and a sixth transistor, connected in series between an anode of the first light-emitting element and the second node; wherein a control terminal of the sixth transistor is connected to the first node;

a second transistor connected between the first node and a third node positioned at the interconnection point of the fourth transistor and the sixth transistor; and

a fifth transistor connected between the second node and the first voltage input end; wherein the second sub-pixel circuit comprises:

a seventh transistor, connected between the third node and an anode of the second light-emitting element; and

an eighth transistor, connected in parallel with the fifth transistor;

a first supply voltage is input to the first voltage input end, and a second supply voltage is input to the cathodes of the first light-emitting element and the second light-emitting element;

a first scanning signal is coupled to the control terminal of the first transistor, a second scanning signal is coupled to both the control terminals of the second transistor and the third transistor;

said reference voltage is not said first scanning signal or said second scanning signal;

a first enable signal is coupled to both the control terminals of the fourth transistor and the fifth transistor, and a second enable signal is coupled to both the control terminals of the seventh transistor and the eighth transistor; and

a data voltage signal is input to a first end of the third transistor, a second end of the third transistor is connected to the second node, and a reference voltage is input to a first end of the first transistor, a second end of the first transistor is connected to the first node.

2. The pixel circuit according to claim 1 , wherein during the first half of the frame period, the second enable signal having a first logic state keeps the seventh transistor and the eight transistor being switched off, so as to switch off the second light-emitting element; during the second half of the frame period, the first enable signal having the first logic state keeps the fourth transistor and the fifth transistor being switched off, so as to switch off the first light-emitting element.

3. The pixel circuit according to claim 2 , wherein during the first half of the frame period, in an initialization phase of the storage capacitor, the first scanning signal has a second logic state to switch on the first transistor, and initialize the electric potential of the first node into the reference voltage level; and then

in a writing phase of the data voltage signal, the second scanning signal has the second logic state to switch on the second transistor, the third transistor and the sixth transistor, so as to write the data voltage signal to the first node; and then

in a light-emitting phase, the first enable signal has the second logic state to switch on the fourth transistor, the fifth transistor and the sixth transistor, so as to make the first light-emitting element emit light.

4. The pixel circuit according to claim 3 , wherein the first transistor to the eighth transistor are all PMOS transistors, and the first logic state is a high level logic state, and the second logic state is a low level logic state.

5. The pixel circuit according to claim 2 , wherein during the second half of the frame period, in an initialization phase of the storage capacitor, the first scanning signal has a second logic state to switch on the first transistor, and initialize the electric potential of the first node to the reference voltage level; and then

in a writing phase of the data voltage signal, the second scanning signal has the second logic state to switch on the second transistor, the third transistor and the sixth transistor, to write the data voltage signal into the first node; and then

in a light-emitting phase, the second enable signal has the second logic state to switch on the sixth transistor, the seventh transistor and the eighth transistor, so as to make the second light-emitting element emit light.

6. The pixel circuit according to claim 5 , wherein the first transistor to the eighth transistor are all PMOS transistors, and the first logic state is a high level logic state, and the second logic state is a low level logic state.

7. A pixel circuit comprising a first sub-pixel circuit and a second sub-pixel circuit; wherein

the first sub-pixel circuit comprises a first light-emitting element, and the first light-emitting element emits light in a first frame period, and

the second sub-pixel circuit comprises a second light-emitting element, and the second light-emitting element emits light in a second frame period; the second frame period and the first frame period do not overlap;

wherein the first sub-pixel circuit comprises:

a storage capacitor, connected between a first node and a first voltage input end;

a first transistor, connected between the first node and a second voltage input end, wherein a reference voltage is input to the second voltage input end;

a third transistor, connected between a second node and a data line input end;

a fourth transistor and a sixth transistor, connected in series between the anode of the first light-emitting element and the second node; wherein a control terminal of the sixth transistor is connected to the first node;

a second transistor, connected between the first node and a third node positioned at the interconnection point of the fourth transistor and the sixth transistor; and

a fifth transistor, connected between the second node and the first voltage input end; wherein the second sub-pixel circuit comprises:

a seventh transistor, connected between the third node and an anode of the second light-emitting element; and

an eighth transistor, connected in parallel with the fifth transistor;

a first supply voltage is input to the first voltage input end, and a second supply voltage is input to the cathodes of the first light-emitting element and the second light-emitting element;

a first scanning signal is coupled to the control terminal of the first transistor, a second scanning signal is coupled to both the control terminals of the second transistor and the third transistor;

said reference voltage is not said first scanning signal or said second scanning signal;

a first enable signal is coupled to both the control terminals of the fourth transistor and the fifth transistor, and a second enable signal is coupled to both the control terminals of the seventh transistor and the eighth transistor; and

a data voltage signal is input to a first end of the third transistor, a second end of the third transistor is connected to the second node, and a reference voltage is input to a first end of the first transistor, a second end of the first transistor is connected to the first node.

8. The pixel circuit according to claim 7 , wherein the second frame period follows the first frame period sequentially.

9. The pixel circuit according to claim 7 , wherein during the first half of the frame period, the second enable signal having a first logic state keeps the seventh transistor and the eight transistor being switched off, so as to switch off the second light-emitting element; during the second half of the frame period, the first enable signal having the first logic state keeps the fourth transistor and the fifth transistor being switched off, so as to switch off that the first light-emitting element.

10. The pixel circuit according to claim 9 , wherein during the first half of the frame period, in an initialization phase of the storage capacitor, the first scanning signal has a second logic state to switch on the first transistor, and initialize the electric potential of the first node into the reference voltage level; and then

in a writing phase of the data voltage signal, the second scanning signal has the second logic state to switch on the second transistor, the third transistor and the sixth transistor, so as to write the data voltage signal to the first node; and then

in a light-emitting phase, the first enable signal has the second logic state to switch on the fourth transistor, the fifth transistor and the sixth transistor, so as to make the first light-emitting element emit light.

11. The pixel circuit according to claim 10 , wherein the first transistor to the eighth transistor are all PMOS transistors, and the first logic state is a high level logic state, and the second logic state is a low level logic state.

12. The pixel circuit according to claim 9 , wherein during the second half of the frame period, in an initialization phase of the storage capacitor, the first scanning signal has a second logic state to switch on the first transistor, and initialize the electric potential of the first node into the reference voltage level; and then

in a writing phase of the data voltage signal, the second scanning signal has the second logic state to switch on the second transistor, the third transistor and the sixth transistor, to write the data voltage signal into the first node; and then

in a light-emitting phase, the second enable signal has the second logic state to switch on the sixth transistor, the seventh transistor and the eighth transistor, so as to make the second light-emitting element emit light.

13. The pixel circuit according to claim 12 , wherein the first transistor to the eighth transistor are all PMOS transistors, and the first logic state is a high level logic state, and the second logic state is a low level logic state.