Display apparatus and method of manufacturing the same

1 . A display apparatus comprising:

a substrate;

a light-emitting element layer on the substrate, the light-emitting element layer comprising light-emitting elements;

an interference layer on the light-emitting element layer and including a metal and/or a metal oxide;

an encapsulation layer including a first inorganic encapsulation layer on and in contact with the interference layer, an organic encapsulation layer on the first inorganic layer and having reverse wavelength dispersion characteristics;, and a second inorganic encapsulation layer directly on and in contact with the organic encapsulation layer; and

a linear polarization layer on and in contact with the second inorganic encapsulation layer,

wherein each of the light-emitting elements comprises a first electrode, a second electrode, and an intermediate layer between the first electrode and the second electrode, and

wherein, when light incident to the upper surface of the interference layer from a same side as the upper surface is referred to as incident light and light of the incident light reflected from the upper surface of the interference layer in a direction away from the upper surface of the interference layer is referred to as reflected light, an intensity of the incident light is reduced when the incident light is reflected from the upper surface of the interference layer in the direction away from the upper surface of the interference to form the reflected light.

2 . The display apparatus of claim 1 , wherein the linear polarization layer comprises a smectic liquid crystal compound and a dichroic dye compound.

3 . The display apparatus of claim 2 , wherein the smectic liquid crystal compound comprises a smectic A phase.

4 . The display apparatus of claim 3 , wherein the smectic liquid crystal compound comprises a material having functional groups at both ends of a molecular structure thereof.

5 . The display apparatus of claim 4 , wherein the smectic liquid crystal compound comprises a material represented by Formula A below:

(functional group)−( X 1) n 1−(functional group)  Formula A

wherein, in Formula A, the functional group is an alkylate group or an acrylate group, X1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted benzene, O, or C(═O), and n1 is an integer from 1 to 50.

6 . The display apparatus of claim 2 , wherein the dichroic dye compound comprises a compound having at least one azo group.

7 . The display apparatus of claim 1 , wherein a phase of light passing through the organic encapsulation layer is delayed by λ/4.

8 . The display apparatus of claim 7 , wherein the organic encapsulation layer comprises a reactive mesogen.

9 . A method of manufacturing a display apparatus, the method comprising:

forming, on a substrate, light-emitting elements each comprising a first electrode, an intermediate layer and a second electrode;

forming an interference layer on the light-emitting elements, the interference layer including a metal and/or a metal oxide;

forming a first inorganic encapsulation layer on and in contact with the interference layer,

forming, on the first inorganic encapsulation layer, an organic encapsulation layer having reverse wavelength dispersion characteristics;

forming a second inorganic encapsulation layer directly on and in contact with the organic encapsulation layer; and

forming a linear polarization layer on and in contact with the second inorganic encapsulation layer,

wherein, when light incident to an upper surface of the interference layer from a same side as the upper surface is referred to as incident light and light of the incident light reflected from the upper surface of the interference layer in a direction away from the upper surface of the interference layer is referred to as reflected light, an intensity of the incident light is reduced when the incident light is reflected from the upper surface of the interference layer in the direction away from the upper surface of the interference to form the reflected light.

10 . The method of claim 9 , wherein the linear polarization layer comprises a smectic liquid crystal compound and a dichroic dye compound.

11 . The method of claim 10 , wherein the forming of the linear polarization layer comprises:

coating, on the organic encapsulation layer, a coating material comprising the smectic liquid crystal compound and the dichroic dye compound; and

curing the coating material.

12 . The method of claim 11 , wherein the smectic liquid crystal compound comprises a material having functional groups at both ends of a molecular structure thereof, and

the functional groups are crosslinked to each other in the curing of the coating material.

13 . The method of claim 12 , wherein the smectic liquid crystal compound comprises a material represented by Formula A below:

(functional group)−( X 1) n 1−(functional group)  Formula A

wherein, in Formula A, the functional group is an alkylate group or an acrylate group, X1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted benzene, O, or C(═O), and n1 is an integer from 1 to 50.

14 . The method of claim 10 , wherein the smectic liquid crystal compound comprises a smectic A phase.

15 . The method of claim 10 , wherein the dichroic dye compound comprises a compound having at least one azo group.

16 . The method of claim 9 , wherein a phase of light passing through the organic encapsulation layer is delayed by λ/4.