Flexible display panel, manufacturing method thereof and flexible display apparatus

1. A flexible display panel, comprising:

a flexible substrate;

a flexible display screen on the flexible substrate;

a protection film disposed at a side of the flexible display screen away from the flexible substrate; and

a connection layer sandwiched between the flexible display screen and the protection film, wherein the connection layer comprises at least a hyperelasticity film,

wherein the flexible display panel further comprises a circular polarizer, and the circular polarizer is disposed on a side of the flexible display screen, away from the flexible substrate,

the flexible display panel is a flexible organic light-emitting display panel,

the circular polarizer is between the flexible display screen and the connection layer, and

a stress neutral layer of the flexible display panel is between the flexible display screen and the circular polarizer.

2. The flexible display panel according to claim 1 , wherein the connection layer is in direct contact with both of the flexible display screen and the protection film.

3. The flexible display panel according to claim 1 , wherein a material of the hyperelasticity film comprises at least one of ethylene-propylene rubber, ethylene-butadiene-styrene block copolymer, and styrene-butadiene-styrene block copolymer.

4. The flexible display panel according to claim 1 , wherein the connection layer further comprises a first adhesive layer and a second adhesive layer, and the hyperelasticity film is sandwiched between the first adhesive layer and the second adhesive layer.

5. The flexible display panel according to claim 4 , wherein a material of the first adhesive layer and a material of the second adhesive layer comprise an optical clear adhesive.

6. The flexible display panel according to claim 1 , wherein a material of the protection film comprises polyimide, silicon nitride, silicon oxide or silicon oxynitride.

7. The flexible display panel according to claim 1 , further comprising a flexible supporting layer, wherein the flexible supporting layer is disposed on a side of the flexible substrate away from the flexible display screen.

8. The flexible display panel according to claim 7 , wherein a material of the flexible supporting layer comprises polyethylene terephthalate or polyvinyl fluoride.

9. The flexible display panel according to claim 1 , wherein the circular polarizer comprises a linear polarizer and a quarter-wavelength optical retardation film which are stacked arranged.

10. The flexible display panel according to claim 1 , further comprising a touch screen, wherein the touch screen is disposed on a side of the flexible display screen closer to the protection film.

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

12. A method for manufacturing a flexible display panel, comprising:

providing a flexible substrate;

forming a flexible display screen on the flexible substrate;

forming a connection layer on a side of the flexible display screen away from the flexible substrate; and

forming a protection film on a side of the connection layer away from the flexible display screen; wherein the connection layer comprises a hyperelasticity film,

wherein the flexible display panel further comprises a circular polarizer, and the circular polarizer is disposed on a side of the flexible display screen away from the flexible substrate,

the flexible display panel is a flexible organic light-emitting display panel,

the circular polarizer is between the flexible display screen and the connection layer, and

a stress neutral layer of the flexible display panel is between the flexible display screen and the circular polarizer.

13. The manufacturing method according to claim 12 , wherein a material of the hyperelasticity film comprises at least one of ethylene-propylene rubber, ethylene-butadiene-styrene block copolymer, and styrene-butadiene-styrene block copolymer.

14. The manufacturing method according to claim 12 , wherein before forming the hyperelasticity film, the method further comprises forming a first adhesive layer, and

after the hyperelasticity film is formed, the method further comprises forming a second adhesive layer.

15. The flexible display panel according to claim 2 , wherein the connection layer further comprises a first adhesive layer and a second adhesive layer, and the hyperelasticity film is sandwiched between the first adhesive layer and the second adhesive layer.

16. The flexible display panel according to claim 2 , wherein a material of the protection film comprises polyimide, silicon nitride, silicon oxide or silicon oxynitride.

17. The flexible display panel according to claim 2 , further comprising a flexible supporting layer, wherein the flexible supporting layer is disposed on a side of the flexible substrate away from the flexible display screen.