Display device
A display device includes a light emitting element, and a sealing member on the light emitting element and sealing the light emitting element, wherein the sealing member includes a first inorganic layer on the light emitting element, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer.
1. A display device comprising:
a light emitting element; and
a sealing member on the light emitting element and sealing the light emitting element,
wherein the sealing member comprises:
a first inorganic layer on the light emitting element and having a refractive index of 1.58 to 1.64;
an organic layer on the first inorganic layer; and
a second inorganic layer on the organic layer and having a refractive index of 1.58 to 2.00.
2. The display device of claim 1 , wherein a thickness of the first inorganic layer is 0.5 μm to 1.5 μm.
3. The display device of claim 1 , wherein the first inorganic layer comprises at least one of silicon oxynitride, silicon nitride, and silicon oxide.
4. The display device of claim 1 , wherein a thickness of the second inorganic layer is 0.5 μm to 1.5 μm.
5. The display device of claim 1 , wherein the second inorganic layer comprises two or more sub inorganic layers having refractive indices different from each other.
6. The display device of claim 1 , wherein the second inorganic layer comprises a first sub inorganic layer having a refractive index of 1.58 to 1.64, and a second sub inorganic layer having a refractive index of 1.80 to 2.00.
7. The display device of claim 6 , wherein a ratio of a thickness of the first sub inorganic layer to a thickness of the second sub inorganic layer is 3:1 to 5:1.
8. The display device of claim 7 , wherein the thickness of the first sub inorganic layer is 0.5 μm to 0.6 μm.
9. The display device of claim 7 , wherein the thickness of the second sub inorganic layer is 0.1 μm to 0.2 μm.
10. The display device of claim 6 , wherein the first sub inorganic layer comprises silicon oxynitride or silicon oxide.
11. The display device of claim 6 , wherein the second sub inorganic layer comprises at least one of silicon nitride, aluminum oxide, and titanium oxide.
12. The display device of claim 6 , wherein the second sub inorganic layer is at a top of the sealing member.
13. The display device of claim 1 , wherein the second inorganic layer comprises silicon nitride that does not comprise a Si—O bond, and has a thickness of 0.15 μm to 0.25 μm.
14. The display device of claim 13 , wherein a hydrogen content of the second inorganic layer is less than or equal to 2.8×10 22 atom/cm 3 .
15. The display device of claim 13 , wherein a molar ratio of nitrogen to silicon is 1 to 1.3 for an entirety of the second inorganic layer.
16. The display device of claim 13 , wherein the second inorganic layer has a density of 2.3 g/cm 3 to 2.6 g/cm 3 .
17. The display device of claim 1 , wherein the light emitting element comprises:
a first electrode;
a second electrode on the first electrode; and
an intermediate layer between the first electrode and the second electrode, and comprises a light emitting layer having at least one of an organic light emitting material and a quantum dot light emitting material.
18. The display device of claim 1 , further comprising a capping layer between the light emitting element and the sealing member.
19. The display device of claim 18 , further comprising a cover layer between the capping layer and the sealing member and has a refractive index of 1.3 to 1.4.
20. The display device of claim 1 , further comprising a color control layer on the sealing member and comprises a quantum dot.
21. A display device comprising:
a light emitting element;
a first inorganic layer on the light emitting element and has a first thickness;
an organic layer on the first inorganic layer; and
a second inorganic layer on the organic layer,
wherein the second inorganic layer comprises a first sub inorganic layer having a second thickness less than the first thickness, and a second sub inorganic layer on the first sub inorganic layer and has a third thickness less than the second thickness.
22. The display device of claim 21 , wherein a ratio of the second thickness to the third thickness is 3:1 to 5:1.
23. The display device of claim 21 ,
wherein the first inorganic layer has a first refractive index,
wherein the first sub inorganic layer has a second refractive index, and
wherein the second sub inorganic layer has a third refractive index greater than the first refractive index and the second refractive index.
24. The display device of claim 23 , wherein the first refractive index is 1.58 to 1.64.
25. The display device of claim 23 , wherein the second refractive index is 1.58 to 1.64, and the third refractive index is 1.80 to 2.00.
26. A display device comprising:
a light emitting element; and
a sealing member on the light emitting element and sealing the light emitting element,
wherein the sealing member comprises:
a first inorganic layer;
an organic layer on the first inorganic layer; and
a second inorganic layer on the organic layer, and
wherein the second inorganic layer
comprises silicon nitride that does not comprise a Si—O bond,
has a thickness of 0.15 μm to 0.25 μm,
has a molar ratio of nitrogen to silicon of 1 to 1.3 for an entirety of the second inorganic layer, and
has a hydrogen content less than or equal to 2.8×10 22 atom/cm 3 .
27. The display device of claim 26 , wherein the second inorganic layer has a density of 2.3 g/cm 3 to 2.6 g/cm 3 .
28. The display device of claim 26 , wherein a refractive index of the first inorganic layer is 1.58 to 1.64, and a refractive index of the second inorganic layer is 1.58 to 2.00.