Curved display screen and electronic device

1. A curved display screen, comprising:

a flat display area;

a transition display area; and

a curved display area, wherein the curved display area is arranged around the flat display area, the transition display area is arranged between the flat display area and the curved display area, and a pixel density in at least one part of the curved display area is lower than a pixel density in the flat display area; and

wherein a pixel density in the transition display area is gradually decreased in a direction away from the flat display area, a maximum value of the pixel density in the transition display area is less than or equal to the pixel density in the flat display area, a minimum value of the pixel density in the transition display area is greater than or equal to the pixel density in the curved display area.

2. The curved display screen of claim 1 , wherein the pixel density in the curved display area is gradually decreased in the direction away from the flat display area.

3. The curved display screen of claim 2 , wherein the pixel density in the curved display area is gradually decreased in a linear manner.

4. The curved display screen of claim 1 , wherein the curved display area comprises a straight edge area and a corner area connected to each other, and a pixel density in the corner area is lower than a pixel density of the flat display area.

5. The curved display screen of claim 4 , wherein the pixel density in the corner area is gradually decreased in a direction from a connecting line of the straight edge area and the corner area to a center line of the corner area.

6. The curved display screen of claim 1 , wherein:

a driving current of pixels in the curved display area is greater than a driving current of pixels in the flat display area, and a brightness of the pixels in the curved display area is greater than a brightness of the pixels in the flat display area.

7. The curved display screen of claim 6 , wherein:

the driving current of the pixels in the curved display area is gradually increased in a direction away from the flat display area, and the brightness of the pixels in the curved display area is gradually increased in the direction away from the flat display area.

8. The curved display screen of claim 1 , wherein:

the curved display screen further comprises a transition display area, and the transition display area is arranged between the flat display area and the curved display area;

a pixel density in the transition display area is gradually decreased in a direction away from the flat display area, a maximum value of the pixel density in the transition display area is less than or equal to a minimum value of the pixel density in the pixel density in the flat display area, and a minimum value of the pixel density in transition display area is greater than or equal to the pixel density in the curved display area; and

the driving current of the pixels in the transition display area and the curved display area is gradually increased in a direction away from the flat display area, and the brightness of the pixels in the transition display area and the curved display area are gradually increased in the direction away from the flat display area.

9. The curved display screen of claim 4 , wherein:

a driving current of the pixels in the corner area is greater than the driving current of the pixels in the flat display area, and a brightness of the pixels in the corner area is greater than the brightness of the pixels in the flat display area.

10. The curved display screen of claim 4 , wherein:

the driving current of the pixels in the corner area is gradually increased in the direction from the connecting line to a center line, and the brightness of the pixels in the corner area is gradually increased in the direction from the connecting line to the midline.

11. The curved display screen of claim 1 , further comprising:

a first display signal is input to the flat display area to display a first image in the flat display area; and

a second display signal is input to the curved display area to display a second image in the curved display area,

wherein the second image is gradually and transitionally connected with the first image.

12. An electronic device, comprising:

a curved display screen, comprising:

a flat display area;

a transition display area; and

a curved display area, wherein the curved display area is arranged around the flat display area, the transition display area is arranged between the flat display area and the curved display area, and a pixel density in at least one part of the curved display area is lower than a pixel density in the flat display area; and

wherein a pixel density in the transition display area is gradually decreased in a direction away from the flat display area, a maximum value of the pixel density in the transition display area is less than or equal to the pixel density in the flat display area, a minimum value of the pixel density in the transition display area is greater than or equal to the pixel density in the curved display area,

a housing, wherein the housing is connected to the curved display screen, and an installation space is defined between the curved display screen and the housing;

a motherboard, wherein the motherboard is arranged in the installation space, a display drive device is arranged on the motherboard, and the display drive device is electrically connected to the curved display screen; and

a curved transparent cover plate arranged on a surface of the curved display screen away from the housing.

13. The electronic device of claim 12 , wherein the display drive device is configured to control a driving current of the pixels so that the driving current of the pixels in the area with a low pixel density is greater than the driving current of the pixels in the area with a high pixel density.

14. The electronic device of claim 13 , wherein the display drive is configured to control the driving current of the pixels in the curved display area to be greater than the driving current of the pixels in the flat display area.

15. The electronic device of claim 14 , wherein the display drive device is configured to control the driving current of the pixels in the curved display area to be gradually increased in a direction away from the flat display area.

16. The electronic device of claim 14 , wherein, the display drive device is configured to control the driving current of the pixels in the transition display area and the curved display area to be gradually increased in a direction away from the flat display area.

17. The electronic device of claim 14 , wherein the display drive device is configured to control the driving current of the pixels in the corner area to be greater than the driving current of the pixels in the flat display area.

18. The electronic device of claim 17 , wherein the display drive device is configured to control the driving current of the corner area to be gradually increased in the direction from the connecting line of the straight edge area and the corner area to the center line of the corner area.

19. The electronic device of claim 13 , wherein:

the display drive device is configured to control to input a first display signal to the flat display area so that the flat display area displays the first image; and

the display drive device is configured to control to input a second display signal to the curved display area so that the curved display area displays a second image, wherein the second image is gradually and transitionally connected to the first image.