Display device

1. A display device, comprising:

a display panel, provided with a through hole extending through the display panel in a thickness direction thereof, the display panel comprising:

a frame area surrounding the through hole; and

an active area surrounding the frame area; and

a cover plate covering the display panel, the cover plate comprising:

a first region covering the active area;

a second region covering the frame area, a surface of the second region adjacent to the display panel being provided with a light-shielding portion thereon; and

a third region covering the through hole;

wherein a substrate in the frame area is provided with a plurality of grooves, and a protrusion is provided between adjacent grooves; and

a light-emitting layer is disposed on the grooves and on the protrusion, and the light-emitting layer is discontinuous between the grooves and the protrusion.

2. The display device of claim 1 , wherein a roughness of a surface of the light-shielding portion adjacent to the display panel is larger than a roughness of a surface of the first region adjacent to the display panel and larger than a roughness of a surface of the third region adjacent to the display panel.

3. The display device of claim 2 , wherein the light-shielding portion comprises the surface of the second region adjacent to the display panel.

4. The display device of claim 1 , wherein the light-shielding portion covers an entire surface of the second region adjacent to the display panel.

5. The display device of claim 1 , wherein the light-shielding portion comprises a metal layer.

6. The display device of claim 1 , wherein a light-interfering layer is formed on the cover plate, and the light-interfering layer together with the cover plate, is attached to the display panel.

7. The display device of claim 1 , wherein:

the frame area comprises a substrate and an optically clear adhesive layer disposed on the substrate;

the display device further comprises a light-interfering layer, and the light-interfering layer is arranged on and surrounding an inner surface of a wall of the through hole.

8. A display device, comprising:

a display panel, provided with a through hole extending through the display panel in a thickness direction thereof, the display panel comprising:

a frame area surrounding the through hole; and

an active area surrounding the frame area; and

a cover plate covering the display panel, the cover plate comprising:

a first region covering the active area;

a second region covering the frame area, a surface of the second region adjacent to the display panel being provided with a light-shielding portion thereon; and

a third region covering the through hole;

wherein:

the frame area comprises a substrate and an optically clear adhesive layer disposed on the substrate; and

the display device further comprises a light-interfering layer, and the light-interfering layer is disposed in the frame area and is in contact with the optically clear adhesive layer.

9. The display device of claim 8 , wherein the light-interfering layer is disposed on a surface of the optically clear adhesive layer adjacent to the cover plate.

10. The display device of claim 9 , wherein the light-interfering layer covers an entire surface of the optically clear adhesive layer adjacent to the cover plate.

11. The display device of claim 8 , wherein the light-interfering layer comprises any one of an organic material having a high surface roughness, a black coating, and a prism.

12. The display device of claim 8 , wherein the light-interfering layer is disposed at a side in the optically clear adhesive layer adjacent to the active area and is in contact with the cover plate.

13. The display device of claim 12 , wherein the light-interfering layer comprises a black coating.

14. The display device of claim 12 , wherein a relationship between a height of the light-interfering layer and a height of the optically clear adhesive layer in a direction perpendicular to the display panel satisfies:

0.5 ×h 2 ≤h 1≤0.8 ×h 2;

wherein h 1 denotes the height of the light-interfering layer, and h 2 denotes the height of the optically clear adhesive layer.

15. The display device of claim 12 , wherein the substrate in the frame area is provided with a plurality of grooves thereon, a protrusion is provided between adjacent grooves, and the light-interfering layer is located above the protrusion.

16. A display device, comprising:

a display panel, provided with a through hole extending through the display panel in a thickness direction thereof, the display panel comprising:

a frame area surrounding the through hole; and

an active area surrounding the frame area; and

a cover plate covering the display panel, the cover plate comprising:

a first region covering the active area;

a second region covering the frame area, a surface of the second region adjacent to the display panel being provided with a light-shielding portion thereon; and

a third region covering the through hole;

wherein the frame area comprises a substrate and an optically clear adhesive layer disposed on the substrate; and

the display device further comprises a light-interfering layer, and the light-interfering layer extends circumferentially along a periphery of the third region of the cover plate.

17. The display device of claim 16 , wherein a height of the light-interfering layer in a direction perpendicular to the display panel is equal to a height of the optically clear adhesive layer in the direction perpendicular to the display panel.

18. The display device of claim 16 , wherein the light-interfering layer is in a shape of a hollow cylinder.