Flexible display panel, fabrication method, display apparatus, and portable terminal

1. A flexible display panel, comprising:

a display panel having a first surface and a second surface and capable of being bent towards the second surface; and

at least two supporters disposed on the second surface of the display panel and configured to support the second surface of the display panel when bending the display panel, such that a local minimum radius of curvature in a bending portion of the display panel is greater than or equal to a predetermined value, wherein:

the local minimum radius of curvature is the smallest radius of curvature anywhere in the bending portion of the flexible display panel,

a space between two adjacent supporters of the at least two supporters corresponds to the bending portion of the display panel, and

W>2R, and T≥2R,

where W denotes a distance between the two adjacent supporters of the at least two supporters of the flexible display panel, T denotes a thickness of each of the two adjacent supporters of the at least two supporters, and R denotes a maximum bending radius of the display panel.

2. The flexible display panel according to claim 1 , wherein: the at least two supporters are made of elastic material.

3. The flexible display panel according to claim 1 , wherein:

each of the two adjacent supporters of the at least two supporters has an end in an arcuate shape;

one end point of the arcuate shape contacts with the second surface of the display panel; and

at a position where the arcuate shape and the second surface of the display panel intersect with each other, an angle formed between a tangent line of the arcuate shape and the second surface of the display panel is greater than or equal to 0° and smaller than 90°.

4. The flexible display panel according to claim 3 , wherein:

the angle formed between the tangent line of the arcuate shape and the second surface of the display panel is 0°.

5. The flexible display panel according to claim 1 , wherein:

in a direction perpendicular to the display panel, a supporter of the at least two supporters has a striped shape, and the at least two supporters are arranged in parallel.

6. The flexible display panel according to claim 1 , wherein:

in a direction perpendicular to the display panel, a supporter of the at least two supporters has a rectangular shape, and the at least two supporters are arranged in an array.

7. The flexible display panel according to claim 1 , further comprising a protective layer, wherein:

the at least two supporters have a first surface facing the display panel and an opposing side;

the protective layer is disposed on the opposing side of the at least two supporters;

the protective layer is flexible; and

the protective layer covers the at least two supporters.

8. The flexible display panel according to claim 1 , wherein:

the first surface of the display panel is configured to display images; and

the second surface of the display panel is not configured to display images.

9. The flexible display panel according to claim 1 , wherein:

the first surface of the display panel is configured to either display images or not display images, and the second surface of the display panel is configured to display images; and

the at least two supporters are formed of a transparent material.

10. The flexible display panel according to claim 1 , wherein:

the at least two supporters have an elastic modulus smaller than a substrate located on the second surface of the display panel.

11. A display apparatus, comprising the flexible display panel according to claim 1 .

12. A portable terminal, comprising the display apparatus according to claim 11 .

13. The flexible display panel according to claim 1 , wherein:

each of the two adjacent supporters of the at least two supporters has an end in arcuate shape, and arcuate-shaped ends of the two adjacent supporters face each other.

14. A fabrication method for a flexible display panel, comprising:

forming a display panel having a first surface and a second surface, and capable of being bent towards the second surface; and

forming at least two supporters on the second surface of the display panel and configured to support the second surface of the display panel when bending the display panel, such that a local minimum radius of curvature in a bending portion of the display panel is greater than or equal to a predetermined value, wherein:

the local minimum radius of curvature is the smallest radius of curvature anywhere in the bending portion of the flexible display panel,

a space between two adjacent supporters of the at least two supporters corresponds to the bending portion of the display panel, and

W>2R, and T≥2R, where W denotes a distance between the two adjacent supporters of the at least two supporters of the flexible display panel, T denotes a thickness of each of the two adjacent supporters of the at least two supporters, and R denotes a maximum bending radius of the display panel.

15. The fabrication method according to claim 14 , wherein forming the at least two supporters on the second surface of the display panel further comprises:

forming a first layer on the second surface of the display panel; and

performing a graphic patterning process to form the at least two supporters.

16. The fabrication method according to claim 15 , wherein:

each of the two adjacent supporters of the at least two supporters has an end in an arcuate shape;

one end point of the arcuate shape contacts with the second surface of the display panel; and

at a position where the arcuate shape and the second surface of the display panel intersect with each other, an angle formed between a tangent line of the arcuate shape and the second surface of the display panel is greater than or equal to 0° and smaller than 90°.

17. The fabrication method according to claim 16 , wherein:

the angle formed between the tangent line of the arcuate shape and the second surface of the display panel is 0°.