Display device

1. A display device comprising:

a light provider;

a wavelength conversion layer above the light provider and including a first surface and sides; and

a capping layer on the wavelength conversion layer and including a first area provided on the sides of the wavelength conversion layer and a second area provided on the first surface of the wavelength conversion layer,

wherein the first area of the capping layer includes cracks.

2. The display device of claim 1 , wherein the cracks penetrate the capping layer in a thickness direction.

3. The display device of claim 2 , wherein the sides of the wavelength conversion layer where the cracks are formed are not covered by the capping layer.

4. The display device of claim 3 , further comprising:

a third filter on the capping layer,

wherein the third filter at least partially fills the cracks.

5. The display device of claim 4 , wherein

in a plan view, the sides of the wavelength conversion layer extend in a first direction, and

the display device further comprises a first filter extending in a same direction as the sides of the wavelength conversion layer.

6. The display device of claim 1 , wherein

in a plan view, the wavelength conversion layer includes a first side and a second side opposite to the first side, and

the first side comprises first uneven patterns including a plurality of protruding parts and a plurality of recessed parts.

7. The display device of claim 6 , wherein the second side comprises second uneven patterns including a plurality of protruding parts and a plurality of recessed parts.

8. The display device of claim 7 , wherein the first uneven patterns and the second uneven patterns are symmetrical with respect to a central line equidistant from both the first and second sides.

9. The display device of claim 7 , wherein the first uneven patterns and the second uneven patterns are staggered with respect to a central line equidistant from both the first and second sides.

10. The display device of claim 7 , wherein

the wavelength conversion layer further includes a third side perpendicular to the first and second sides and a fourth side opposite to the third side,

the third side comprises third uneven patterns, and

the fourth side comprises fourth uneven patterns.

11. The display device of claim 6 , wherein, in a plan view, the second side is linear.

12. The display device of claim 1 , further comprising:

a black matrix on or below the wavelength conversion layer to at least partially overlap with the wavelength conversion layer, the black matrix surrounding the wavelength conversion layer in a plan view.

13. The display device of claim 12 , wherein, in a plan view, the sides of the wavelength conversion layer include protruding parts that are outwardly projected and recessed parts that are recessed relative to the protruding parts.

14. The display device of claim 13 , wherein the sides of the wavelength conversion layer overlap with the black matrix.

15. The display device of claim 14 , wherein the cracks are provided in the protruding parts.

16. The display device of claim 14 , wherein the cracks are provided in the recessed parts.

17. The display device of claim 14 , wherein the cracks extend across multiple protruding parts and multiple recessed parts.

18. The display device of claim 14 , wherein the cracks are provided in the second area and overlap with the black matrix.

19. A display device comprising:

a light provider comprising a first pixel electrode unit and a second pixel electrode unit adjacent to the first pixel electrode unit in a first direction; and

a light converter above the light provider, the light converter comprising a first wavelength conversion layer above the first pixel electrode unit, a second wavelength conversion layer above the second pixel electrode unit, and a capping layer between the first and second wavelength conversion layers,

wherein

in a plan view, the first wavelength conversion layer includes first and second sides extending in a second direction, which is perpendicular to the first direction,

in a plan view, the second wavelength conversion layer includes third and fourth sides extending in the second direction,

the second and third sides are adjacent to each other, and

in a plan view, each of the first, second, third, and fourth sides includes a reference line and a plurality of uneven patterns that are outwardly projected or recessed from the reference line,

wherein each of the first wavelength conversion layer and the second wavelength conversion layer comprises a lower surface facing the light provider, and

wherein the capping layer is further disposed on the respective lower surface.

20. A display device comprising:

a light provider comprising a first pixel electrode unit and a second pixel electrode unit adjacent to the first pixel electrode unit in a first direction; and

a light converter above the light provider, the light converter comprising a first wavelength conversion layer above the first pixel electrode unit, a second wavelength conversion layer above the second pixel electrode unit, and a capping layer between the first and second wavelength conversion layers,

wherein

in a plan view, the first wavelength conversion layer includes first and second sides extending in a second direction, which is perpendicular to the first direction,

in a plan view, the second wavelength conversion layer includes third and fourth sides extending in the second direction,

the second and third sides are adjacent to each other,

in a plan view, each of the second and third sides includes a reference line and a plurality of uneven patterns that are outwardly projected or recessed from the reference line, and

the uneven patterns of the second side and the uneven patterns of the third side are staggered with respect to a central line equidistant from both the second and third sides.