Display panel and preparation method thereof, and display apparatus

1. A display panel, comprising a display area and a frame area located at a side of the display area, wherein

the frame area comprises a transition area close to the display area and an outer edge area remote from the display area,

the transition area of the display panel is of a structure comprising a base structure layer, an insulating layer disposed on the base structure layer, a construction structure disposed on the insulating layer, and a first inorganic encapsulation layer and an organic encapsulation layer sequentially disposed on the construction structure, and

the first inorganic encapsulation layer has a concave-convex structure in the transition area; wherein

the outer edge area comprises a hollow structure disposed at a location of the insulating layer close to an outer edge of the display panel, and an anti-crack dam which covers the hollow structure and is disposed at a location of the hollow structure; wherein the hollow structure comprises multiple columns sequentially disposed at intervals;

the construction structure of the transition area comprises multiple columnar bodies which are sequentially disposed at intervals, and the first inorganic encapsulation layer covers the multiple columnar bodies to form the concave-convex structure in the transition area; the outer edge area comprises multiple banks which are sequentially disposed at intervals; the multiple columnar bodies and the multiple banks are arranged on a same layer;

the multiple banks comprises a first bank which is disposed on the insulating layer and closest to the organic encapsulation layer;

the display panel further comprises a second inorganic encapsulation layer, a horizontal straight line segment of the second inorganic encapsulation layer is located between the organic encapsulation layer and the first bank, closest to the organic encapsulation layer, of the multiple banks, the horizontal straight line segment is located at a side of all banks of the multiple banks, and a height of the horizontal straight line segment is less than all heights of all banks of the multiple banks, and the horizontal straight line segment separates the organic encapsulation layer from the first inorganic encapsulation layer covering all of the banks of the multiple banks.

2. The display panel according to claim 1 , wherein

the construction structure comprises a first structure layer disposed on the insulating layer,

the first structure layer is provided with a groove on a side facing the first inorganic encapsulation layer, and

the first inorganic encapsulation layer has a concave-convex structure.

3. The display panel according to claim 2 , wherein the groove is one of multiple grooves, and the multiple grooves are sequentially disposed in parallel in a direction from the display area towards the outer edge area.

4. The display panel according to claim 3 , wherein

the construction structure further comprises a second structure layer superposed on a side of the first structure layer away from the insulating layer,

the second structure layer comprises a columnar body, and

the columnar body is disposed between two adjacent grooves.

5. The display panel according to claim 4 , wherein the columnar body has a width smaller than a distance between two grooves adjacent to the columnar body, a concave part and a convex part of the concave-convex structure are connected through a stepped connecting wall, and the width is a size of the columnar body in a direction along which the multiple grooves are arranged.

6. The display panel according to claim 3 , wherein

the display area of the display panel is of a structure comprising a base structure layer, a driving structure layer disposed on the base structure layer, a planarization layer disposed on the driving structure layer, and a pixel definition layer disposed on the planarization layer,

the first structure layer is disposed on a same layer as the planarization layer, and

the columnar body is disposed on a same layer as the pixel definition layer.

7. The display panel according to claim 1 , wherein the construction structure comprises a first structure layer disposed on the insulating layer and a second structure layer disposed on a side of the first structure layer away from the insulating layer, a side of the first structure layer facing the first inorganic encapsulation layer has a planarized surface, the second structure layer comprises a columnar body, and the first inorganic encapsulation layer has a concave-convex structure.

8. The display panel according to claim 7 , wherein

the display area of the display panel is of a structure comprising a base structure layer, a driving structure layer disposed on the base structure layer, a planarization layer disposed on the driving structure layer, and a pixel definition layer disposed on the planarization layer,

the first structure layer is disposed on a same layer as the planarization layer, and

the columnar body is disposed on a same layer as the pixel definition layer.

9. The display panel according to claim 1 , wherein

the construction structure comprises a second structure layer disposed on the insulating layer,

the second structure layer comprises the multiple columnar bodies,

the display area of the display panel is of a structure comprising a base structure layer, a driving structure layer disposed on the base structure layer, a planarization layer disposed on the driving structure layer, and a pixel definition layer disposed on the planarization layer, and

the second structure layer is disposed on a same layer as the pixel definition layer.

10. A preparation method of a display panel, the display panel comprising a display area and a frame area located at a side of the display area, the frame area comprising a transition area close to the display area and an outer edge area remote from the display area, and the method comprising:

forming a base structure layer;

forming an insulating layer located in the transition area on the base structure layer;

sequentially forming a construction structure and a first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having a concave-convex structure; and

forming an organic encapsulation layer located on the first inorganic encapsulation layer by using an ink jet printing process; wherein

the outer edge area comprises a hollow structure disposed at a location of the insulating layer close to an outer edge of the display panel, and an anti-crack dam which covers the hollow structure and is disposed at a location of the hollow structure; wherein the hollow structure comprises multiple columns sequentially disposed at intervals;

the construction structure of the transition area comprises multiple columnar bodies which are sequentially disposed at intervals, and the first inorganic encapsulation layer covers the multiple columnar bodies to form the concave-convex structure in the transition area; the outer edge area comprises multiple banks which are sequentially disposed at intervals; the multiple columnar bodies and the multiple banks are arranged on a same layer;

the multiple banks comprises a first bank which is disposed on the insulating layer and closest to the organic encapsulation layer;

the display panel further comprises a second inorganic encapsulation layer, a horizontal straight line segment of the second inorganic encapsulation layer is located between the organic encapsulation layer and the first bank, closest to the organic encapsulation layer, of the multiple banks, the horizontal straight line segment is located at a side of all banks of the multiple banks, and a height of the horizontal straight line segment is less than all heights of all banks of the multiple banks, and the horizontal straight line segment separates the organic encapsulation layer from the first inorganic encapsulation layer covering all of the banks of the multiple banks.

11. The preparation method according to claim 10 , wherein sequentially forming the construction structure and the first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having the concave-convex structure, comprises:

forming a planarization film on the insulating layer, performing patterning processing on the planarization film, and forming a planarization layer located in the display area and a first structure layer located in the transition area, wherein the first structure layer is provided with a groove on a side facing the first inorganic encapsulation layer; and

forming the first inorganic encapsulation layer on the first structure layer, the first inorganic encapsulation layer having a concave-convex structure in the transition area.

12. The preparation method according to claim 11 , wherein forming the first inorganic encapsulation layer on the first structure layer, the first inorganic encapsulation layer having the concave-convex structure in the transition area, comprises:

forming a pixel definition film on the planarization layer and the first structure layer, performing patterning processing on the pixel definition film, forming a pixel definition layer in the display area, and forming a second structure layer superposed on the first structure layer in the transition area, wherein the second structure layer comprises a columnar body, and the columnar body is located between two adjacent grooves, and

forming the first inorganic encapsulation layer on the pixel definition layer and the second structure layer, wherein the first inorganic encapsulation layer has a concave-convex structure in the transition area.

13. The preparation method according to claim 10 , wherein sequentially forming the construction structure and the first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having the concave-convex structure, comprise:

forming a planarization film on the insulating layer, performing patterning processing on the planarization film by using a halftone mask, removing part of the planarization film located in the display area to form a planarization layer, and removing part of the planarization film located in the transition area to form a first structure layer and a second structure layer located on a side of the first structure layer away from the insulating layer, wherein the first structure layer is provided with multiple grooves on a side facing the first inorganic encapsulation layer, the second structure layer comprises a columnar body, and the columnar body is located between two adjacent grooves;

forming a pixel definition film on the planarization layer and the second structure layer, performing patterning processing on the pixel definition film, forming a pixel definition layer located in the display area, and removing the pixel definition film in the transition area; and

forming a first inorganic encapsulation layer on the pixel definition layer, wherein the first inorganic encapsulation layer has a concave-convex structure in the transition area.

14. The preparation method according to claim 10 , wherein sequentially forming the construction structure and the first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having the concave-convex structure, comprises:

sequentially forming a planarization film and a pixel definition film located on the insulating layer in the transition area;

performing patterning processing on the pixel definition film and the planarization film by using a halftone mask, and removing part of the pixel definition film and part of the planarization film in the transition area to form a first structure layer and a second structure layer located on a side of the first structure layer away from the insulating layer, wherein the first structure layer is provided with multiple grooves on a side facing the first inorganic encapsulation layer, the second structure layer comprises a columnar body, and the columnar body is located between two adjacent grooves; and

forming the first inorganic encapsulation layer on the second structure layer, wherein the first inorganic encapsulation layer has a concave-convex structure in the transition area.

15. The preparation method according to claim 10 , wherein sequentially forming the construction structure and the first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having the concave-convex structure, comprises:

forming a planarization film on the insulating layer, performing patterning processing on the planarization film, reserving the planarization film in the display area to form a planarization layer, reserving the planarization film at a location of the construction structure to form a first structure layer, wherein a side of the first structure layer facing the first inorganic encapsulation layer has a planarized surface; and

forming a pixel definition film on the planarization layer and the first structure layer, performing patterning processing on the pixel definition film, forming a pixel definition layer in the display area, and forming a second structure layer superposed on the first structure layer in the transition area, wherein the second structure layer comprises a columnar body, and the first inorganic encapsulation layer has a concave-convex structure.

16. The preparation method according to claim 10 , wherein sequentially forming the construction structure and the first inorganic encapsulation layer located on the insulating layer in the transition area, the first inorganic encapsulation layer having the concave-convex structure, comprises:

forming a planarization film on the insulating layer, performing patterning processing on the planarization film, forming a planarization layer located in the display area, and removing a planarization film in the transition area; and

forming a pixel definition film on the planarization layer, performing patterning processing on the pixel definition film, forming a pixel definition layer in the display area, and forming a second structure layer located on the insulating layer in the transition area, wherein the second structure layer comprises a columnar body, and the first inorganic encapsulation layer has a concave-convex structure.

17. A display apparatus, comprising a display panel, wherein

the display panel comprises a display area and a frame area located at a side of the display area,

the frame area comprises a transition area close to the display area and an outer edge area remote from the display area,

the transition area of the display panel is of a structure comprising a base structure layer, an insulating layer disposed on the base structure layer, a construction structure disposed on the insulating layer, and a first inorganic encapsulation layer and an organic encapsulation layer sequentially disposed on the construction structure, and

the first inorganic encapsulation layer has a concave-convex structure in the transition area; wherein

the outer edge area comprises a hollow structure disposed at a location of the insulating layer close to an outer edge of the display panel, and an anti-crack dam which covers the hollow structure and is disposed at a location of the hollow structure; wherein the hollow structure comprises multiple columns sequentially disposed at intervals;

the construction structure of the transition area comprises multiple columnar bodies which are sequentially disposed at intervals, and the first inorganic encapsulation layer covers the multiple columnar bodies to form the concave-convex structure in the transition area; the outer edge area comprises multiple banks which are sequentially disposed at intervals; the multiple columnar bodies and the multiple banks are arranged on a same layer;

the multiple banks comprises a first bank which is disposed on the insulating layer and closest to the organic encapsulation layer;

the display panel further comprises a second inorganic encapsulation layer, a horizontal straight line segment of the second inorganic encapsulation layer is located between the organic encapsulation layer and the first bank, closest to the organic encapsulation layer, of the multiple banks, the horizontal straight line segment is located at a side of all banks of the multiple banks, and a height of the horizontal straight line segment is less than all heights of all banks of the multiple banks, and the horizontal straight line segment separates the organic encapsulation layer from the first inorganic encapsulation layer covering all of the banks of the multiple banks.

18. The display apparatus according to claim 17 , wherein the construction structure comprises a first structure layer disposed on the insulating layer, the first structure layer is provided with a groove on a side facing the first inorganic encapsulation layer, and the first inorganic encapsulation layer has a concave-convex structure.

19. The display apparatus according to claim 17 , wherein the construction structure comprises a first structure layer disposed on the insulating layer and a second structure layer disposed on a side of the first structure layer away from the insulating layer, a side of the first structure layer facing the first inorganic encapsulation layer has a planarized surface, the second structure layer comprises a columnar body, and the first inorganic encapsulation layer has a concave-convex structure.

20. The display apparatus according to claim 17 , wherein

the construction structure comprises a second structure layer disposed on the insulating layer,

the second structure layer comprises the multiple columnar bodies which are sequentially disposed at intervals,

the first inorganic encapsulation layer has a concave-convex structure,

the display area of the display panel is of a structure comprising a base structure layer, a driving structure layer disposed on the base structure layer, a planarization layer disposed on the driving structure layer, and a pixel definition layer disposed on the planarization layer, and

the second structure layer is disposed on a same layer as the pixel definition layer.