Organic light-emitting display device and method of manufacturing the same

1. An organic light-emitting display device, comprising:

a substrate;

a pixel-defining layer on the substrate and defining a light-emitting region; and

an organic light-emitting element over the light-emitting region,

wherein the pixel-defining layer comprises:

a first pixel-defining layer on the substrate; and

a second pixel-defining layer on the first pixel-defining layer,

wherein the organic light-emitting element comprises:

a first organic layer contacting the first pixel-defining layer at either end thereof;

a second organic layer on the first organic layer and contacting the second pixel-defining layer at either end thereof; and

an organic light-emitting layer on the second organic layer,

wherein the first pixel-defining layer is lyophilic, and

wherein a concentration of fluorine ions bonded onto a surface of the first pixel-defining layer differs from a concentration of fluorine ions bonded onto a surface of the second pixel-defining layer.

2. The organic light-emitting display device of claim 1 ,

wherein the second pixel-defining layer is lyophobic.

3. The organic light-emitting display device of claim 1 ,

wherein the first organic layer is formed by using a solvent that evaporates at a temperature in a range from a first temperature to a second temperature and the first pixel-defining layer is lyophobic at a temperature lower than the first temperature.

4. An organic light-emitting display device, comprising:

a substrate;

a pixel-defining layer on the substrate and defining a light-emitting region; and

an organic light-emitting element over the light-emitting region,

wherein the pixel-defining layer comprises:

a first pixel-defining layer on the substrate; and

a second pixel-defining layer on the first pixel-defining layer,

wherein the organic light-emitting element comprises:

a first organic layer contacting the first pixel-defining layer at either end thereof;

a second organic layer on the first organic layer and contacting the second pixel-defining layer at either end thereof; and

an organic light-emitting layer on the second organic layer,

wherein the first pixel-defining layer is lyophilic, and

wherein the second pixel-defining layer is lyophilic.

5. An organic light-emitting display device, comprising:

a substrate;

a pixel-defining layer on the substrate and defining a light-emitting region; and

an organic light-emitting element over the light-emitting region,

wherein the pixel-defining layer comprises:

a first pixel-defining layer on the substrate; and

a second pixel-defining layer on the first pixel-defining layer,

wherein the organic light-emitting element comprises:

a first organic layer contacting the first pixel-defining layer at either end thereof;

a second organic layer on the first organic layer and contacting the second pixel-defining layer at either end thereof; and

an organic light-emitting layer on the second organic layer,

wherein the first pixel-defining layer is lyophilic, and

wherein the first organic layer is a hole injection layer and the second organic layer is a hole transporting layer.

6. An organic light-emitting display device, comprising:

a substrate;

a pixel-defining layer on the substrate and defining a light-emitting region; and

an organic light-emitting element over the light-emitting region,

wherein the pixel-defining layer comprises:

a first pixel-defining layer on the substrate; and

a second pixel-defining layer on the first pixel-defining layer,

wherein the organic light-emitting element comprises:

a first organic layer contacting the first pixel-defining layer at either end thereof;

a second organic layer on the first organic layer and contacting the second pixel-defining layer at either end thereof; and

an organic light-emitting layer on the second organic layer,

wherein the first pixel-defining layer is lyophilic, and

wherein the organic light-emitting layer further comprises a third organic layer on the second organic layer and ends of the third organic layer and ends of the first organic layer do not contact each other.

7. A method of manufacturing an organic light-emitting display device, comprising:

forming a first electrode on a substrate;

forming a pixel-defining layer, which comprises:

an opening that exposes a part of the first electrode therethrough;

a first pixel-defining layer that is on the first electrode and the substrate; and

a second pixel-defining layer that is on the first pixel-defining layer;

lyophobizing a surface of the pixel-defining layer and lyophilizing a surface of the first electrode;

forming a first organic layer in the opening at a temperature in a range from a first temperature to a second temperature where the first pixel-defining layer is lyophilized; and

forming a second organic layer on the first organic layer.

8. The method of claim 7 , wherein the forming the first organic layer, comprises:

applying a solution composition, which is obtained by mixing a solvent and a first organic material, into the opening, and

evaporating the solvent at the temperature in the range from the first temperature to the second temperature.

9. The method of claim 7 , wherein the forming the second organic layer, comprises:

applying a solution composition, which is obtained by mixing a solvent and a second organic material, into the opening, and

evaporating the solvent at the temperature in the range from the first temperature to the second temperature.

10. The method of claim 9 , wherein the second pixel-defining layer is not lyophilized at the temperature in the range from the first temperature to the second temperature.

11. The method of claim 7 , wherein the forming the second organic layer, comprises:

applying a solution composition, which is obtained by mixing a solvent and a second organic material, into the opening, and

evaporating the solvent at a third temperature, which is higher than the second temperature.

12. The method of claim 11 , wherein the second pixel-defining layer is lyophilized at the third temperature.

13. The method of claim 7 , wherein the first organic layer is a hole injection layer and the second organic layer is a hole transporting layer.

14. The method of claim 7 , further comprising:

forming a third organic layer on the second organic layer.

15. A method of manufacturing an organic light-emitting display device, comprising:

forming a first electrode on a substrate;

forming a pixel-defining layer, which comprises:

an opening that exposes a part of the first electrode therethrough;

a first pixel-defining layer on the first electrode and the substrate; and

a second pixel-defining layer on the first pixel-defining layer;

lyophobizing a surface of the pixel-defining layer and lyophilizing a surface of the first electrode;

forming a first organic layer in the opening;

lyophilizing only a surface of the first pixel-defining layer by lowering a concentration of fluorine ions at the surface of the first pixel-defining layer below a concentration of fluorine ions at a surface of the second pixel-defining layer; and

forming a second organic layer on the first organic layer.

16. The method of claim 15 , wherein the lyophilizing the surface of the first pixel-defining layer, comprises:

heating the first pixel-defining layer to a temperature such that a bonding between the surface of the first pixel-defining layer and fluorine ions can be severed.

17. The method of claim 15 , wherein the lyophilizing the surface of the first pixel-defining layer, comprises:

applying light only to the surface of the first pixel-defining layer.

18. A method of manufacturing an organic light-emitting display device, comprising:

forming a first electrode on a substrate;

forming a pixel-defining layer, which comprises:

an opening that exposes a part of the first electrode therethrough;

a first pixel-defining layer on the first electrode and the substrate; and

a second pixel-defining layer on the first pixel-defining layer;

lyophobizing a surface of the pixel-defining layer and lyophilizing a surface of the first electrode;

forming a first organic layer in the opening;

lyophilizing only a surface of the first pixel-defining layer; and

forming a second organic layer on the first organic layer,

wherein the first organic layer is a hole injection layer and the second organic layer is a hole transporting layer.