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

1. An organic light-emitting display apparatus comprising:

a first light-emitting unit comprising a first color light-emitting layer on an area of a substrate, the first color light-emitting layer to emit light of a first color;

a second light-emitting unit comprising a second color light-emitting layer on the substrate and spaced apart from the first color light-emitting layer, the second color light-emitting layer to emit light of a second color; and

a third light-emitting unit comprising a third color light-emitting layer arranged on the substrate as a common layer corresponding to both areas of the first color light-emitting layer and the second color light-emitting layer, the third color light-emitting layer to emit light of a third color different from the first and second colors,

wherein the first color light-emitting layer comprises a lower light-emitting layer and an upper light-emitting layer that are stacked to have a multilayered structure and are stacked with the third light-emitting unit arranged as the common layer.

2. The organic light-emitting display apparatus of claim 1 , wherein the first color comprises blue, the second color comprises red, and the third color comprises green.

3. The organic light-emitting display apparatus of claim 2 , wherein the first color light-emitting layer, the second color light-emitting layer, and the third color light-emitting layer are each arranged between two electrodes, and

a distance between two electrodes between which the first color light-emitting layer is arranged is from about 1750 Å to about 1950 Å,

a distance between two electrodes between which the second color light-emitting layer is arranged is from about 1000 Å to about 1200 Å, and

a distance between two electrodes between which the third color light-emitting layer is arranged is from about 800 Å to about 1000 Å.

4. The organic light-emitting display apparatus of claim 2 , wherein the first color light-emitting layer, the second color light-emitting layer, and the third color light-emitting layer are each arranged between two electrodes, and

a distance between two electrodes between which the first color light-emitting layer is arranged is from about 2900 Å to about 3100 Å,

a distance between two electrodes between which the second color light-emitting layer is arranged is from about 2750 Å to about 2950 Å, and

a distance between two electrodes between which the third color light-emitting layer is arranged is from about 2250 Å to about 2450 Å.

5. The organic light-emitting display apparatus of claim 2 , further comprising a first charge-providing layer configured to provide holes to the second color light-emitting layer, the third color light-emitting layer, and the lower light-emitting layer, and a fourth charge-providing layer arranged between the lower light-emitting layer and the upper light-emitting layer and spaced apart from the second color light-emitting layer and the third color light-emitting layer.

6. The organic light-emitting display apparatus of claim 5 , wherein the fourth charge-providing layer comprises an electron transport layer, an electron-generating layer, a hole-generating layer, and a hole transport layer that are sequentially stacked in a direction from the lower light-emitting layer to the upper light-emitting layer.

7. The organic light-emitting display apparatus of claim 2 , further comprising a first charge-providing layer configured to provide holes to a surface of the third color light-emitting layer, and

a second charge-providing layer configured to provide electrons to another surface of the third color light-emitting layer.

8. The organic light-emitting display apparatus of claim 7 , further comprising an optical resonance layer between the third color light-emitting layer and the first charge-providing layer.

9. The organic light-emitting display apparatus of claim 7 , wherein the second charge-providing layer is a composite layer configured to generate and transport electrons.

10. The organic light-emitting display apparatus of claim 7 , wherein the second charge-providing layer comprises an electron-generating layer and an electron transport layer spaced apart from each other.

11. The organic light-emitting display apparatus of claim 7 , wherein the second color light-emitting layer shares the first charge-providing layer and the second charge-providing layer with the third color light-emitting layer.

12. The organic light-emitting display apparatus of claim 11 , further comprising an optical resonance layer between the second color light-emitting layer and the first charge-providing layer.

13. An organic light-emitting display apparatus comprising:

a first light-emitting unit comprising a first color light-emitting layer on an area of a substrate, the first color light-emitting layer to emit light of a first color;

a second light-emitting unit comprising a second color light-emitting layer on the substrate and spaced apart from the first color light-emitting layer, the second color light-emitting layer to emit light of a second color; and

a third light-emitting unit comprising a third color light-emitting layer arranged on the substrate as a common layer corresponding to both areas of the first color light-emitting layer and the second color light-emitting layer, the third color light-emitting layer to emit light of a third color;

a first charge-providing layer configured to provide holes to a surface of the third color light-emitting layer, and

a second charge-providing layer configured to provide electrons to another surface of the third color light-emitting layer,

wherein the first color light-emitting layer comprises a lower light-emitting layer and an upper light-emitting layer that are stacked to have a multilayered structure,

wherein the first color comprises blue, the second color comprises red, and the third color comprises green, and

wherein the lower light-emitting layer of the first color light-emitting layer shares the first charge-providing layer and the second charge-providing layer with the third color light-emitting layer, and the organic light-emitting display apparatus further comprises a third charge-providing layer between the second charge-providing layer and the upper light-emitting layer.

14. The organic light-emitting display apparatus of claim 13 , wherein the third charge-providing layer is a composite layer configured to generate and transport holes.

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

forming a first light-emitting unit comprising a first color light-emitting layer on an area of a substrate, the first color light-emitting layer to emit light of a first color;

forming a second light-emitting unit comprising a second color light-emitting layer on the substrate and spaced apart from the first color light-emitting layer, the second color light-emitting layer to emit light of a second color; and

forming a third light-emitting unit comprising a third color light-emitting layer that is a common layer arranged on the substrate and corresponding to both areas of the first color light-emitting layer and the second color light-emitting layer, the third color light-emitting layer to emit light of a third color different from the first and second colors,

wherein the first color light-emitting layer comprises a lower light-emitting layer and an upper light-emitting layer that are stacked to have a multilayered structure and are stacked with the third light-emitting unit arranged as the common layer.

16. The method of claim 15 , wherein the first color comprises blue, the second color comprises red, and the third comprises green.

17. The method of claim 16 , further comprising forming a first charge-providing layer configured to provide holes to the second color light-emitting layer, the third color light-emitting layer, and the lower light-emitting layer, and

forming a fourth charge-providing layer between the lower light-emitting layer and the upper light-emitting layer and spaced apart from the second color light-emitting layer and the third color light-emitting layer.

18. The method of claim 16 , further comprising forming a first charge-providing layer configured to provide holes to a surface of the third color light-emitting layer, and

forming a second charge-providing layer configured to provide electrons to another surface of the third color light-emitting layer.

19. The method of claim 18 , wherein the second color light-emitting layer shares the first charge-providing layer and the second charge-providing layer with the third color light-emitting layer.

20. The method of claim 18 , wherein the lower light-emitting layer of the first color light-emitting layer shares the first charge-providing layer and the second charge-providing layer with the third color light-emitting layer, and

the method further comprises forming a third charge-providing layer between the second charge-providing layer and the upper light-emitting layer.