OLED display panel, method for driving the same and display device

1. An organic light emitting diode (OLED) display panel, comprising a display area and a non-display area, wherein pixel circuits arranged in a matrix of rows and columns are disposed in the display area; a scan driving circuit and a power supply are disposed in the non-display area;

wherein the scan driving circuit comprises a plurality of first and second shift register units correspondingly connected with each row of the pixel circuits, and the shift register units are configured to supply a scan signal to corresponding rows of the pixel circuits;

wherein the display area comprises a first display area and a second display area, wherein the plurality of first shift register units each is connected with a pixel circuit in the second display area; the plurality of second shift register units each is connected with a pixel circuit in the first display area; a quantity of pixel circuits in a row of pixel circuits in the second display area is fewer than a quantity of pixel circuits in a row of pixel circuits in the first display area; and

wherein the power supply is configured to supply a high-potential voltage and a low-potential voltage to each shift register unit; wherein a first voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of first shift register units by the power supply, and a second voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of second shift register units by the power supply; wherein the first voltage difference differs from the second voltage difference.

2. The OLED display panel according to claim 1 , wherein a value of the high-potential voltage supplied to the first shift register unit by the power supply is the same as a value of the high-potential voltage supplied to the second shift register unit by the power supply; and

a value of the low-potential voltage supplied to the first shift register unit by the power supply is different from a value of the low-potential voltage supplied to the second shift register unit by the power supply.

3. The OLED display panel according to claim 2 , wherein the power supply supplies the high-potential voltage to each of the plurality of first shift register units and to each of the plurality of second shift register units through a first power supply line;

wherein the power supply supplies the low-potential voltage to each of the plurality of first shift register units through a second power supply line; and

wherein the power supply supplies the low-potential voltage to each of the plurality of second shift register units through a third power supply line.

4. The OLED display panel according to claim 3 , wherein the first power supply line, the second power supply line and the third power supply line are disposed in a same layer.

5. The OLED display panel according to claim 4 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and

each of the power supply lines and the data lines are disposed in a same layer.

6. The OLED display panel according to claim 1 , wherein a value of the low-potential voltage supplied to the first shift register unit by the power supply is the same as a value of the low-potential voltage supplied to the second shift register unit by the power supply; and

a value of the high-potential voltage supplied to the first shift register unit by the power supply is different from a value of the high-potential voltage supplied to the second shift register unit by the power supply.

7. The OLED display panel according to claim 6 , wherein the power supply supplies the low-potential voltage to each of the plurality of first shift register units and to each of the plurality of second shift register units through a first power supply line;

the power supply supplies the high-potential voltage to each of the plurality of first shift register units through a second power supply line; and

the power supply supplies the high-potential voltage to each of the plurality of second shift register units through a third power supply line.

8. The OLED display panel according to claim 7 , wherein the first power supply line, the second power supply line and the third power supply line are disposed in a same layer.

9. The OLED display panel according to claim 8 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and

each of the power supply lines and the data lines are disposed in a same layer.

10. The OLED display panel according to claim 1 , wherein a value of the low-potential voltage supplied to the first shift register unit by the power supply is different from a value of the low-potential voltage supplied to the second shift register unit by the power supply; and

a value of the high-potential voltage supplied to the first shift register unit by the power supply is different from a value of the high-potential voltage supplied to the second shift register unit by the power supply.

11. The OLED display panel according to claim 10 , wherein the power supply supplies the low-potential voltage to each of the plurality of first shift register units through a first power supply line;

the power supply supplies the low-potential voltage to each of the plurality of second shift register units through a second power supply line;

the power supply supplies the high-potential voltage to each of the plurality of first shift register units through a third power supply line; and

the power supply supplies the high-potential voltage to each of the plurality of second shift register units through a fourth power supply line.

12. The OLED display panel according to claim 11 , wherein the first power supply line, the second power supply line, the third power supply line and the fourth power supply line are disposed in a same layer.

13. The OLED display panel according to claim 12 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and

each of the power supply lines and the data lines are disposed in a same layer.

14. The OLED display panel according to claim 1 , wherein the second display area is located on top or bottom of the first display area, and the second display area is divided into a first subarea and a second subarea, wherein part of the pixel circuits in each row of the pixel circuits in the second display area are located in the first subarea, and the remaining part of pixel circuits are located in the second subarea; and

the display panel further comprises a special-shaped area; and the first subarea and the second subarea are separated by the special-shaped area.

15. The OLED display panel according to claim 14 , wherein the first subarea and the second subarea are symmetrically disposed.

16. A display device, comprising an organic light emitting diode (OLED) display panel, wherein the OLED display panel comprises a display area and a non-display area, pixel circuits arranged in a matrix of rows and columns are disposed in the display area; a scan driving circuit and a power supply are disposed in the non-display area;

wherein the scan driving circuit comprises a plurality of first and second shift register units correspondingly connected with each row of the pixel circuits, and the shift register units are configured to supply a scan signal to corresponding rows of the pixel circuits;

wherein the display area comprises a first display area and a second display area, wherein the plurality of first shift register units each is connected with a pixel circuit in the second display area; the plurality of second shift register units each is connected with a pixel circuit in the first display area; a quantity of pixel circuits in a row of pixel circuits in the second display area is fewer than a quantity of pixel circuits in a row of pixel circuits in the first display area; and

wherein the power supply is configured to supply a high-potential voltage and a low-potential voltage to each shift register unit; wherein a first voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of first shift register units by the power supply, and a second voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of second shift register unit by the power supply; wherein the first voltage difference differs from the second voltage difference.

17. A method for driving an organic light emitting diode (OLED) display panel, wherein the OLED display panel comprises a display area and a non-display area, pixel circuits arranged in a matrix of rows and columns are disposed in the display area; wherein a scan driving circuit and a power supply are disposed in the non-display area; the scan driving circuit comprises a plurality of first and second shift register units correspondingly connected with each row of the pixel circuits; wherein the display area comprises a first display area and a second display area; wherein the plurality of first shift register units each is connected with a pixel circuit in the second display area; the plurality of second shift register units each is connected with a pixel circuit in the first display area; wherein a quantity of pixel circuits in a row of pixel circuits in the second display area is fewer than a quantity of pixel circuits in a row of pixel circuits in the first display area;

wherein the method comprises:

supplying a high-potential voltage and a low-potential voltage respectively to each of the shift register units, wherein a first voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of first shift register units by the power supply, and a second voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of second shift register units by the power supply, wherein the first voltage difference differs from the second voltage difference; and

supplying a scan signal to a corresponding row of the pixel circuits by each of the shift register units in the scan driving circuit supplies according to the received high-potential voltage and the received low-potential voltage, so that a light emitting current of the pixel circuit in the first display area is consistent with a light emitting current of the pixel circuit in the second display area when data voltages are identical.