Display panel and display device with improved shrinkage performance of curved regions

1. A display panel, comprising a planar region, a first curved region, two second curved regions and a transition region, wherein the planar region comprises a first side and a second side adjacent to the first side, the two second curved regions are respectively coupled to the first side and the second side, and the first curved region is located between the two curved regions and corresponding to a corner area of the planar region; the transition region located between the first curved region and the second curved regions; the display panel further comprises:

a supporting layer, comprising a first portion being bent and within the first curved region, a second portion being bent and within the second curved region, and a third portion being bent and within the transition region; and

a panel main body, disposed on the first portion, the second portion, and the third portion and bent along with the first portion, the second portion, and the third portion;

wherein the first portion has a first structure, the third portion has a second structure, the first structure comprises a plurality of first pores, and the second structure comprises a plurality of second pores, a porosity of the first portion per unit volume is greater than a porosity of the third portion, and a shrinkage rate of the third portion is less than the shrinkage rate of the first portion and is greater than the shrinkage rate of the second portion.

2. The display panel as claimed in claim 1 , wherein in the transition region, the pore diameter of a plurality of the second pores gradually decreases in the direction from the first curved region to the second curved region.

3. The display panel as claimed in claim 2 , wherein the pore diameter of the first pores is less than or equal to 0.1 time of the thickness of the supporting layer.

4. The display panel as claimed in claim 1 , wherein the pore diameter of each of the second pores is less than the pore diameter of each of the first pores.

5. The display panel as claimed in claim 4 , wherein the first pores have the same pore diameter, and a center distance of two adjacent first pores is 2 to 5 times of the pore diameter of the first pores.

6. The display panel as claimed in claim 4 , wherein the first pores have different pore diameter, and the first pores comprise a first sub-pore having a minimum pore diameter and a second sub-pore having a maximum pore diameter; wherein the minimum pore diameter is 10% to 50% of the maximum pore diameter, and a center distance of two adjacent second sub-pores is 2 to 5 times of the pore diameter of the maximum pore diameter.

7. The display panel as claimed in claim 1 , wherein in the transition region, the shrinkage rate of the third portion gradually decreases in the direction from the first curved region to the second curved region.

8. The display panel as claimed in claim 1 , wherein the first structure and the second structure are regular skeletal structures.

9. The display panel as claimed in claim 8 , wherein the first structure comprises a first skeletal structure, and the second structure comprises a second skeletal structure; wherein the variation amplitude of a distance between two adjacent skeletons in the second skeletal structure before and after shrink is less than that of in the first skeletal structure.

10. The display panel as claimed in claim 9 , wherein the distance between two adjacent skeletons in the second skeletal structure gradually decreases in the direction from the first curve region to the second curved region.

11. The display panel as claimed in claim 9 , wherein the variation amplitude of the distance between two adjacent skeletons in the first skeletal structure before and after shrink is less than or equal to 50%.

12. The display panel as claimed in claim 1 , wherein the panel main body comprises:

a substrate, located on the supporting layer;

a driving array layer, located on the substrate; and

a light emitting device, located on the driving array layer.

13. The display panel as claimed in claim 12 , wherein the light emitting device comprises organic light emitting diode (OLED), Mini LED, or Micro LED.

14. A display device, comprising a display panel, wherein the display panel comprises a planar region, a first curved region, two second curved regions and a transition region, the planar region comprises a first side and a second side adjacent to the first side, the two second curved regions are respectively coupled to the first side and the second side, and the first curved region is located between the two curved regions and corresponding to a corner area of the planar region; the transition region located between the first curved region and the second curved regions; the display panel further comprises:

a supporting layer, comprising a first portion being bent and within the first curved region, a second portion being bent and within the second curved region, and a third portion being bent and within the transition region; and

a panel main body, disposed on the first portion, the second portion, and the third portion and bent along with the first portion, the second portion, and the third portion;

wherein the first portion has a first structure, the third portion has a second structure, the first structure comprises a plurality of first pores, and the second structure comprises a plurality of second pores, a porosity of the first portion per unit volume is greater than a porosity of the third portion, and a shrinkage rate of the third portion is less than the shrinkage rate of the first portion and is greater than the shrinkage rate of the second portion.

15. The display device as claimed in claim 14 , wherein in the transition region, the pore diameter of a plurality of the second pores gradually decreases in the direction from the first curved region to the second curved region.

16. The display device as claimed in claim 14 , wherein the pore diameter of each of the second pores is less than the pore diameter of each of the first pores.