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

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

a substrate;

a first pixel electrode for first color emission, a second pixel electrode for second color emission, and a third pixel electrode for third color emission, the first pixel electrode, the second pixel electrode, and the third pixel electrode being spaced apart from each other on the substrate;

a first color emission layer on the first pixel electrode, a second color emission layer on the second pixel electrode, and a third color emission layer on the third pixel electrode;

a metal opposite electrode on the first color emission layer, the second color emission layer, and the third color emission layer; and

a capping layer, the capping layer being porous and including a same material as the opposite electrode and being integral therewith.

2. The organic light-emitting display apparatus as claimed in claim 1 , wherein a thickness of the capping layer varies on the first pixel electrode, the second pixel electrode, and the third pixel electrode.

3. The organic light-emitting display apparatus as claimed in claim 2 , wherein:

the capping layer includes a first capping layer corresponding to the first pixel electrode, a second capping layer corresponding to the second pixel electrode, and a third capping layer corresponding to the third pixel electrode, and

a thickness of the first capping layer is in a range of about 100 Å to about 700 Å, a thickness of the second capping layer is in a range of about 100 Å to about 800 Å, and a thickness of the third capping layer is in a range of about 100 Å to about 1000 Å.

4. The organic light-emitting display apparatus as claimed in claim 1 , wherein the capping layer is formed by laser ablation.

5. A method of manufacturing an organic light-emitting display apparatus, the method comprising:

preparing a substrate;

forming a first pixel electrode for first color emission, a second pixel electrode for second color emission, and a third pixel electrode for third color emission , the first pixel electrode, the second pixel electrode, and the third pixel electrode being spaced apart from each other on the substrate;

forming a first color emission layer corresponding to the first pixel electrode, a second color emission layer corresponding to the second pixel electrode, and a third color emission layer corresponding to the third pixel electrode;

forming a metal layer on the first color emission layer, the second color emission layer, and the third color emission layer; and

forming a capping layer by irradiating a laser to at least a portion of an upper portion of the metal layer, the capping layer being integrally formed at the upper portion of the metal layer, a lower portion of the metal layer forming an opposite electrode to the pixel electrodes.

6. The method as claimed in claim 5 , wherein forming the capping layer includes changing structural characteristics and optical characteristics of at least a portion of the surface of the metal layer.

7. The method as claimed in claim 5 , wherein forming the capping layer includes changing at least a portion of the surface of the metal layer to be porous.

8. The method as claimed in claim 7 , wherein:

the capping layer includes a first porous portion having a first thickness on the first pixel electrode, a second porous portion having a second thickness on the second pixel electrode, and a third porous portion having a third thickness on the third pixel electrode, and

the first thickness, the second thickness, and the third thickness are different.

9. The method as claimed in claim 5 , wherein the metal layer is formed to have a thickness of about 200 Å to about 2000 Å.

10. The method as claimed in claim 5 , wherein forming the capping layer includes:

forming a first capping layer on the first pixel electrode;

forming a second capping layer on the second pixel electrode; and

forming a third capping layer on the third pixel electrode.

11. The method as claimed in claim 10 , wherein the first capping layer is formed to have at a thickness of about 100 Å to about 700 Å, the second capping layer is formed to have at a thickness of about 100 Å to about 800 Å, and the third capping layer is formed to have at a thickness of about 100 Å to about 1000 Å.

12. The method as claimed in claim 5 , wherein the metal layer includes Li, Ca, LiF/Ca, LiF/Al, Al, Ag, Mg, or a mixture thereof, indium tin oxide, indium zinc oxide, ZnO, or In 2 O 3 .

13. An organic light-emitting display apparatus manufactured according to the method as claimed in claim 5 .

14. A method of manufacturing an organic light-emitting display apparatus, the method comprising:

preparing a substrate;

forming a first pixel electrode for first color emission, a second pixel electrode for second color emission, and a third pixel electrode for third color emission , the first pixel electrode, the second pixel electrode, and the third pixel electrode being spaced apart from each other on the substrate;

forming a first color emission layer corresponding to the first pixel electrode, a second color emission layer corresponding to the second pixel electrode, and a third color emission layer corresponding to the third pixel electrode;

forming a metal layer on the first color emission layer, the second color emission layer, and the third color emission layer; and

forming a capping layer by irradiating laser to at least a portion of a surface of the metal layer,

wherein:

the metal layer is formed to have a thickness of about 200 Å to about 2000 Å, and

forming the capping layer includes not irradiating a lower portion of the metal layer having a thickness of about 50 Å to about 150 Å.