Shift register circuit, driving method thereof, gate driving circuit, and display apparatus

1. A shift register circuit comprising:

a shift output circuit; and

N driving output circuits;

wherein N is an integer larger than 1;

among the N driving output circuits, an i-th driving output circuit is respectively coupled to an i-th driving clock signal terminal of N driving clock signal terminals, a pull-up node of the shift output circuit, and an i-th driving output terminal of N driving output terminals;

the i-th driving output circuit is configured to input an i-th driving clock signal from the i-th driving clock signal terminal to the i-th driving output terminal under a control of the pull-up node, wherein i is a positive integer not greater than N;

the shift output circuit is respectively coupled to an input signal terminal, a reset signal terminal, a control clock signal terminal, and a shift output terminal; and

the shift output circuit is configured to control a potential of the shift output terminal under a control of the input signal from the input signal terminal, a reset signal from the reset signal terminal, and a control clock signal from the control clock signal terminal;

the shift register circuit further includes a pull-down circuit, the pull down circuit is respectively coupled to a pull-down power supply terminal, each of the driving output terminals, a pull-down node of the shift output circuit, and the input signal terminal; and

the pull-down circuit is configured to input the pull-down power supply signal from the pull-down power supply terminal to each of the driving output terminals under a control of the pull-down node and the input signal.

2. The shift register circuit according to claim 1 , wherein the i-th driving output circuit comprises a first transistor;

a gate electrode of the first transistor is coupled to the pull-up node, a first electrode of the first transistor is coupled to the i-th driving clock signal terminal, and a second electrode of the first transistor is coupled to the i-th driving output terminal.

3. The shift register circuit according to claim 1 , wherein the pull-down circuit comprises N pull-down sub-circuits;

an i-th pull-down sub-circuit of the N pull-down sub-circuits is respectively coupled to the pull-down power supply terminal, the i-th driving output terminal, the pull-down node and the input signal terminal, and

the i-th pull-down sub-circuit is configured to input the pull-down power supply signal to the i-th driving output terminal under a control of the pull-down node and the input signal.

4. The shift register circuit according to claim 3 , wherein the i-th pull-down sub-circuit comprises a second transistor and a third transistor;

a gate electrode of the second transistor is coupled to the pull-down node, a first electrode of the second transistor is coupled to the pull-down power supply terminal, and a second electrode of the second transistor is coupled to the i-th driving output terminal; and

a gate electrode of the third transistor is coupled to the input signal terminal, a first electrode of the third transistor is coupled to the pull-down power supply terminal, and a second electrode of the third transistor is coupled to the i-th driving output terminal.

5. The shift register circuit according to claim 1 , wherein the shift register circuit comprises two driving output circuits, each of the driving output circuits is coupled to one of two driving clock signal terminals;

a period of the driving clock signal from each of the driving clock signal terminals is half of a period of the control clock signal, and a duty ratio of each of the driving clock signals and that of the control clock signal are one half respectively.

6. The shift register circuit according to claim 1 , wherein the shift output circuit comprises an input sub-circuit, an output sub-circuit, a reset sub-circuit, a pull-down control sub-circuit, and a noise reduction sub-circuit;

the input sub-circuit is respectively coupled to the input signal terminal, the first direct-current power source terminal, and the pull-up node; the input sub-circuit is configured to input a first direct-current power source signal from the first direct-current power source terminal to the pull-up node under a control of the input signal;

the output sub-circuit is respectively coupled to the pull-up node, the control clock signal terminal, and the shift output terminal; the output sub-circuit is configured to input the control clock signal to the shift output terminal under a control of the pull-up node;

the reset sub-circuit is respectively coupled to the reset signal terminal, the second direct-current power supply terminal and the pull-up node; the reset sub-circuit is configured to input a second direct-current power source signal from the second direct-current power source terminal to the pull-up node under a control of the reset signal;

the pull-down control sub-circuit is respectively coupled to the pull-up node, the pull-down power supply terminal, the pull-up power supply terminal, and the pull-down node; the pull-down control sub-circuit is configured to input the pull-down power supply signal from the pull-down power supply terminal or the pull-up power supply signal from the pull-up power supply signal terminal to the pull-down node under a control of the pull-up node; and

the noise reduction sub-circuit is respectively coupled to the pull-down node, the pull-down power supply terminal, the pull-up node, and the shift output terminal; the noise reduction sub-circuit is configured to input the pull-down power supply signal to the pull-up node and the shift output terminal respectively under a control of the pull-down node.

7. A driving method of a shift register circuit, the driving method comprising a charging stage, an output stage, a reset stage, and a noise reduction stage,

wherein the output stage comprises N sub-output stages; the shift register circuit comprises a shift output circuit, N driving output circuits, a pull-down circuit, wherein N is an integer larger than 1;

during the charging stage, a potential of an input signal from an input signal terminal is an effective potential, the shift output circuit charges a pull-up node under a control of the input signal, the pull-down circuit transmits a pull-down power supply signal from a pull-down power supply terminal to each of N driving output terminals respectively under a control of the input signal, a potential of the pull-down power supply signal is an ineffective potential;

during the output stage, the pull-up node is kept at an effective potential, a potential of a control clock signal from a clock signal terminal is an effective potential, the shift output circuit transmits the control clock signal to the shift output terminal under a control of the pull-up node, in an i-th sub-output stage of N sub-output stages, a potential of an i-th driving clock signal from an i-th driving clock signal terminal of N driving clock signal terminals is an effective potential, the i-th driving output circuit transmits the i-th clock signal to the i-th driving output terminal under a control of the pull-up node;

during the reset stage, a potential of a reset signal from a reset signal terminal is an effective potential, the shift output circuit controls the potential of the pull-up node to be an ineffective potential, each of the driving output circuits stops outputting signals; and

during the noise reduction stage, the potential of the input signal and the potential of the pull-up node are ineffective potentials; the shift output circuit controls the potential of the pull-down node to be an effective potential, the pull-down circuit transmits the pull-down power supply signal to each of the driving output terminals respectively under a control of the pull-down node .

8. The driving method according to claim 7 , wherein, during the output stage, the N driving clock signal terminals sequentially output driving clock signals of an effective potential.

9. The driving method according to claim 7 , wherein the i-th driving output circuit includes a first transistor;

during the i-th sub-output stage, the first transistor in the i-th driving output circuit is turned on under a control of the pull-up node, and the i-th driving clock signal terminal transmits the i-th driving clock signal to the i-th driving output terminal.

10. The driving method according to claim 9 , wherein a duration of an effective potential of each of the driving clock signals from each of the driving clock signal terminals within each period is not larger than 1/N of a duration of an effective potential of the control clock signal within each period, and a duration of each of the sub-output stages is not larger than 1/N of a duration of the output stage.

11. The driving method according to claim 10 , wherein a potential of a driving clock signal from one of the N driving clock signal terminals is an effective potential, and potentials of driving clock signals from the other N−1 driving clock signal terminals are ineffective potentials.

12. The driving method according to claim 11 , wherein the shift register circuit comprises two driving output circuits, the output stage comprises two sub-output stages, and a duration of each of the sub-output stages is one half of a duration of the output stage.

13. The driving method according to claim 12 , wherein the two driving output circuits are coupled to a first driving clock signal terminal and a second driving clock signal terminal respectively, and time sequences of the driving clock signals from the two driving clock signal terminals are complementary to each other.

14. A gate driving circuit, comprising at least two cascaded shift register circuits, each of the at least two cascaded shift register circuits being the shift register circuit according to claim 1 ,

wherein a shift output terminal of a shift register circuit of each stage is respectively coupled to an input signal terminal of a shift register circuit of a next stage and a reset signal terminal of a shift register circuit of a previous stage.

15. A display apparatus, comprising a display panel and the gate driving circuit according to claim 14 ,

wherein the display panel comprises a plurality of gate lines;

each stage of shift register circuit in the gate drive circuit includes N driving output terminals, and each of the driving output terminal is coupled to one of the plurality of the gate lines in the display panel respectively, wherein N is an integer greater than 1.