Display panel and display apparatus

1. A display panel, comprising:

a substrate;

a light-emitting component layer provided at a side of the substrate facing towards a light-emitting surface of the display panel and comprising light-emitting components; and

a light-extraction layer provided at a side of the light-emitting component layer facing towards the light-emitting surface of the display panel and comprising light-extraction structures and a peripheral structure, wherein a film in which the light-extraction structures are located is at a side away from the light-emitting component layer, of a film in which the peripheral structure is located, and the peripheral structure surrounds the light-extraction structures and has a refractive index smaller than a refractive index of each of the light-extraction structures,

wherein the light-emitting components comprise first-color light-emitting components, and an orthographic projection of one of the first-color light-emitting components on the substrate overlaps with an orthographic projection of one of the light-extraction structures on the substrate;

wherein the light-extraction structures comprise first light-extraction structures, and an orthographic projection of one of the first light-extraction structures on the substrate overlaps with an orthographic projection of one of the first-color light-emitting components on the substrate; and

wherein the first light-extraction structures comprise first sidewalls, wherein the first sidewalls comprise first sub-sidewalls and second sub-sidewalls, wherein a maximum angle formed between a tangent plane of one of the first sub-sidewalls and a plane of the substrate is a first angle α1, and a maximum angle formed between a tangent plane of one of the second sub-sidewalls and the plane of the substrate is a second angle α2, where α1≥α2.

2. The display panel according to claim 1 , wherein 75°>α1≥65°, and 55°≥α2≥45°.

3. The display panel according to claim 1 , wherein each of the first sidewalls is a first curved structure, and wherein a third angle formed between a tangent plane of the first curved structure and the plane of the substrate firstly increases and then decreases in a direction from one of the first-color light-emitting components to a corresponding one of the first light-extraction structures.

4. The display panel according to claim 1 , wherein each of the first sidewalls is a second curved structure, and wherein a fourth angle formed between a tangent plane of the second curved structure and the plane of the substrate gradually decreases in a direction from one of the first-color light-emitting components to a corresponding one of the first light-extraction structures.

5. The display panel according to claim 1 , wherein each of the first sidewalls is a planar structure.

6. The display panel according to claim 1 , wherein the first light-extraction structures comprise at least one first light-extraction sub-structure and at least one second light-extraction sub-structure, wherein a first light-extraction sub-structure of the at least one first light-extraction sub-structure and a second light-extraction sub-structure of the at least one second light-extraction sub-structure overlap with different first-color light-emitting components of the first-color light-emitting components, respectively; and

wherein sidewalls of the at least one first light-extraction sub-structure are the first sub-sidewalls, and sidewalls of the at least one second light-extraction sub-structure are the second sub-sidewalls.

7. The display panel according to claim 1 , wherein the first light-extraction structures comprise at least one first light-extraction sub-structure, and the first sidewalls of one of the at least one first light-extraction sub-structure comprises one of the first sub-sidewalls and one of the second sub-sidewalls.

8. The display panel according to claim 7 , wherein the first light-extraction structures further comprise at least one second light-extraction sub-structure, and each of the first sidewalls of each of the at least one second light-extraction sub-structure is one of the second sub-sidewalls.

9. The display panel according to claim 7 , wherein a length of an edge of one of the first-color light-emitting components corresponding to one of the first sub-sidewalls is smaller than a length of an edge of another one of the first-color light-emitting components corresponding to one of the second sub-sidewalls; or

wherein the one of the first sub-sidewalls and the one of the second sub-sidewall are adjacent to each other.

10. The display panel according to claim 6 , wherein a number n1 of the at least one first light-extraction sub-structure and a number n2 of the at least one second light-extraction sub-structure satisfy |(n1−n2)/(n1+n2)|≤20%.

11. The display panel according to claim 10 , wherein the at least one first light-extraction sub-structure comprises a plurality of first light-extraction sub-structures, the at least one second light-extraction sub-structure comprises a plurality of second light extraction sub-structures, and m second light-extraction sub-structures of the plurality of second light-extraction sub-structures are disposed between two adjacent first light-extraction sub-structures of the plurality of first light-extraction sub-structures, where 1≤m≤5, and m is a positive integer.

12. The display panel according to claim 10 , wherein the at least one first light-extraction sub-structure comprises a plurality of first light-extraction sub-structures, the at least one second light-extraction sub-structure comprises a plurality of second light-extraction sub-structures, and a second light-extraction sub-structure of the plurality of second light-extraction sub-structures is disposed between two adjacent first light-extraction sub-structures of the plurality of first light-extraction sub-structures, and one of the plurality of first light-extraction sub-structures is disposed between two adjacent second light-extraction sub-structures of the plurality of second light extraction sub-structures.

13. The display panel according to claim 1 , wherein the first-color light-emitting components are blue light-emitting components;

wherein the light-emitting components further comprise red light-emitting components and green light-emitting components; and

wherein the light-extraction structures further comprise second light-extraction structures and third light-extraction structures, an orthographic projection of one of the second light-extraction structures on the substrate overlaps with an orthographic projection of one of the red light-emitting components on the substrate, and an orthographic projection of one of the third light-extraction structures on the substrate overlaps with an orthographic projection of one of the green light-emitting components on the substrate.

14. The display panel according to claim 13 , wherein the second light-extraction structures comprise second sidewalls, and a maximum angle between a tangent plane of each of the second sidewalls of the second light-extraction structures and the plane of the substrate is a third angle β, where β≥α1; and

wherein the third light-extraction structures comprise third sidewalls, and a maximum angle formed between a tangent plane of each of the fourth sidewalls of the third light-extraction structures and the plane of the substrate is a fourth angle γ, where γ≥α1.

15. The display panel according to claim 13 , wherein the second light-extraction structures comprise second sidewalls comprising one of the third sub-sidewalls and one of fourth sub-sidewalls, a maximum angle formed between a tangent plane of the one of the third sub-sidewalls and the plane of the substrate is a third angle β, and a maximum angle formed between a tangent plane of the one of the fourth sub-sidewalls and the plane of the substrate is a fifth angle β′, where β<β′≤α1; and

wherein the third light-extraction structures comprise third sidewalls comprising one of fifth sub-sidewalls and one of sixth sub-sidewalls, a maximum angle formed between a tangent plane of the one of the fifth sub-sidewalls and the plane of the substrate is a fourth angle γ, and a maximum angle formed between a tangent plane of the one of the sixth sub-sidewalls and the plane of the substrate is a sixth angle γ′, where γ>γ′≥α1.

16. The display panel according to claim 14 , wherein 75°≥β≥65° and 75°≥γ≥65°; or β>γ.

17. The display panel according to claim 15 , wherein a number C1 of the second sub-sidewalls, a number C2 of the fourth sub-sidewalls, and a number C3 of the sixth sub-sidewalls satisfy C1>C3≥C2.

18. The display panel according to claim 15 , wherein the light-emitting components are repeatedly arranged with first repeating units, and each of the first repeating units comprises at least one blue light-emitting component, at least one red light-emitting component, and at least one green light-emitting component;

wherein the light-extraction structures are repeatedly arranged with second repeating units, and one of the second repeating units covers at least two of the first repeating units;

wherein one of the second repeating units comprises a first light-extraction structure group and a second light-extraction structure group, the first light-extraction structure group comprises a first light-extraction sub-structure, and the second light-extraction structure group comprises a second light-extraction sub-structure; and

wherein the first light-extraction sub-structure and the second light-extraction sub-structure overlap with different blue light-emitting components located in two repeating units of the first repeating units, respectively, sidewalls of the first light-extraction sub-structure comprise one of the first sub-sidewalls, and sidewalls of the second light-extraction sub-structure comprise one of the second sub-sidewalls.

19. The display panel according to claim 15 , wherein the light-emitting components are repeatedly arranged with first repeating units, and each of the first repeating units comprises at least one blue light-emitting component, at least one red light-emitting component, and at least one green light-emitting component;

wherein the light-extraction structures are repeatedly arranged with second repeating units, one of the second repeating units covers at least two of the first repeating units;

wherein one of the second repeating units comprises a first light-extraction structure group and a second light-extraction structure group; the first light-extraction structure group comprises a first light-extraction sub-structure, a third light-extraction sub-structure, and a fifth light-extraction sub-structure; and the second light-extraction structure group comprises a second light-extraction sub-structure, a fourth light-extraction sub-structure, and a sixth light-extraction sub-structure;

wherein the first light-extraction sub-structure and the second light-extraction sub-structure overlap with different blue light-emitting components located in two of the first repeating units, respectively; the third light-extraction sub-structure and the fourth light-extraction sub-structure overlap with different red light-emitting components located in two of the first repeating units, respectively; and the fifth light-extraction sub-structure and the sixth light-extraction sub-structure overlap with different blue light-emitting components located in two of the first repeating units, respectively; and

wherein sidewalls of the first light-extraction sub-structure comprise one of the first sub-sidewalls, and sidewalls of the second light-extraction sub-structure are the second sub-sidewalls; sidewalls of the third light-extraction sub-structure comprises one of the third sub-sidewalls, sidewalls of the fourth light-extraction sub-structure are the fourth sub-sidewalls; sidewalls of the fifth light-extraction sub-structure comprise one of the fifth sub-sidewalls, and sidewalls of the sixth light-extraction sub-structure are the sixth sub-sidewalls.

20. A display apparatus comprising a display panel,

wherein the display panel comprises:

a substrate;

a light-emitting component layer provided at a side of the substrate facing towards a light-emitting surface of the display panel and comprising light-emitting components; and

a light-extraction layer disposed at a side of the light-emitting component layer facing towards the light-emitting surface of the display panel and comprising light-extraction structures and a peripheral structure, a film in which the light-extraction structures are located is at a side away from the light-emitting component layer, of a film in which the peripheral structure is located, the peripheral structure surrounding the light-extraction structures and having a refractive index smaller than a refractive index of each of the light-extraction structures,

wherein the light-emitting components comprise first-color light-emitting components, and an orthographic projection of one of the first-color light-emitting components on the substrate overlaps with an orthographic projection of one of the light-extraction structures on the substrate;

wherein the light-extraction structures comprise first light-extraction structures, and an orthographic projection of one of the first light-extraction structures on the substrate overlaps with an orthographic projection of one of the first-color light-emitting components on the substrate; and

wherein the first light-extraction structures comprise first sidewalls, wherein the first sidewalls comprise first sub-sidewalls and second sub-sidewalls, a maximum angle formed between a tangent plane of one of the first sub-sidewalls and a plane of the substrate is a first angle α 1 , and a maximum angle formed between a tangent plane of one of the second sub-sidewalls and the plane of the substrate is a second angle α2, where α1>α2.

21. A display panel, comprising:

a substrate;

a light-emitting component layer provided at a side of the substrate facing towards a light-emitting surface of the display panel and comprising light-emitting components; and

a light-extraction layer provided at a side of the light-emitting component layer facing towards the light-emitting surface of the display panel and comprising light-extraction structures and a peripheral structure, the peripheral structure surrounding the light-extraction structures and having a refractive index smaller than a refractive index of each of the light-extraction structures,

wherein the light-emitting components comprise first-color light-emitting components, and an orthographic projection of one of the first-color light-emitting components on the substrate overlaps with an orthographic projection of one of the light-extraction structures on the substrate;

wherein the light-extraction structures comprise first light-extraction structures, and an orthographic projection of one of the first light-extraction structures on the substrate overlaps with an orthographic projection of one of the first-color light-emitting components on the substrate;

wherein the first light-extraction structures comprise first sidewalls, wherein the first sidewalls comprise first sub-sidewalls and second sub-sidewalls, wherein a maximum angle formed between a tangent plane of one of the first sub-sidewalls and a plane of the substrate is a first angle α 1 , and a maximum angle formed between a tangent plane of one of the second sub-sidewalls and the plane of the substrate is a second angle α2, where α1>α2;

wherein the first-color light-emitting components are blue light-emitting components;

wherein the light-emitting components further comprise red light-emitting components and green light-emitting components; and

wherein the light-extraction structures further comprise second light-extraction structures and third light-extraction structures, an orthographic projection of one of the second light-extraction structures on the substrate overlaps with an orthographic projection of one of the red light-emitting components on the substrate, and an orthographic projection of one of the third light-extraction structures on the substrate overlaps with an orthographic projection of one of the green light-emitting components on the substrate.