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

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

a substrate;

a plurality of pixel electrodes arranged in a matrix on the substrate; and

an organic common layer covering the pixel electrodes,

the pixel electrodes comprise a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes,

an n-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column comprises the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number,

one of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)-th pixel column in the same row, and

in regions of the organic common layer which overlap the third pixel electrodes, the organic common layer emits light, and

in regions of the organic common layer which overlap the first pixel electrodes and the second pixel electrodes, the organic common layer does not emit light.

2. The display device of claim 1 , further comprising a plurality of pixel regions arranged in a matrix,

the pixel regions comprise a plurality of first pixel regions which display a first color, a plurality of second pixel regions which display a second color different from the first color, and a plurality of third pixel regions which display a third color different from the second color, and

the first pixel electrodes are respectively disposed in the first pixel regions, the second pixel electrodes are respectively disposed in the second pixel regions, and the third pixel electrodes are respectively disposed in the third pixel regions.

3. The display device of claim 1 , wherein regions of the organic common layer which overlap the third pixel electrodes emit blue light.

4. The display device of claim 1 , further comprising a first organic layer between each of the first pixel electrodes and the organic common layer and a second organic layer between each of the second pixel electrodes and the organic common layer.

5. The display device of claim 4 , wherein the first organic layer emits green light, and the second organic layer emits red light.

6. The display device of claim 4 , wherein the first organic layer emits red light, and the second organic layer emits green light.

7. The display device of claim 1 , wherein a distance between each of the second pixel electrodes and one of the third pixel electrodes which neighbors the second pixel electrode is larger than a distance between each of the third pixel electrodes and one of the first pixel electrodes which neighbors the third pixel electrode in a row direction.

8. The display device of claim 1 , further comprising spacers formed on regions of the substrate between the second pixel electrodes and the third pixel electrodes.

9. The display device of claim 1 , further comprising spacers formed on regions of the substrate between the second pixel electrodes and the first pixel electrodes.

10. The display device of claim 1 , further comprising spacers formed on regions of the substrate between the third pixel electrodes and the first pixel electrodes.

11. The display device of claim 1 , further comprising first spacers formed on the regions of the substrate between the second pixel electrodes and the third pixel electrodes, second spacers formed on the regions of the substrate between the second pixel electrodes and the first pixel electrodes, and third spacers formed on the regions of the substrate between the third pixel electrodes and the first pixel electrodes.

12. The display device of claim 1 , wherein the first organic layer emits green light, and the second organic layer emits red light.

13. The display device of claim 1 , further comprising a pixel defined layer disposed on the substrate and comprising a plurality of apertures arranged in a matrix, wherein the pixel electrodes are formed in the apertures on the substrate.

14. An organic light-emitting display device comprising:

a substrate;

a plurality of pixel electrodes arranged in a matrix on the substrate; and

an organic common layer disposed on the substrate and covering the pixel electrodes,

the pixel electrodes comprise a plurality of first pixel electrodes, a plurality of second pixel electrodes, and a plurality of third pixel electrodes,

an n-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column comprises the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number,

one of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)-th pixel column in the same row,

in regions of the organic common layer which overlap the third pixel electrodes, the organic common layer emits light.

in regions of the organic common layer which overlap the first pixel electrodes and the second pixel electrodes, the organic common layer does not emit light, and

the organic common layer comprises a plurality of protruding patterns which protrude toward the substrate, and the protruding patterns comprise a first protruding pattern and second through fifth protruding patterns which are located an equal distance from the first protruding pattern.

15. The display device of claim 14 , wherein the second through fifth protruding patterns are sequentially arranged in a clockwise direction with respect to the first protruding pattern, the second protruding pattern, the first protruding pattern and the fourth protruding pattern are located in a straight line, and the third protruding pattern, the first protruding pattern and the fifth protruding pattern are located in another straight line.

16. The display device of claim 14 , wherein the protruding patterns emit light.

17. The display device of claim 14 , wherein the protruding patterns emit blue light.

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

preparing a substrate;

forming a pixel defined layer, which comprises a plurality of apertures arranged in a matrix, on the substrate;

placing first through third pixel electrodes in the apertures on the substrate;

forming a first organic layer on each of the first pixel electrodes;

forming a second organic layer on each of the second pixel electrodes;

forming an organic common layer on the first organic layer, the second organic layer and each of the third pixel electrodes as a common layer; and

forming a common electrode on the organic common layer,

an n-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, an (n+1)-th pixel column which is adjacent to the n-th pixel column comprises the first pixel electrodes, and an (n+2)-th pixel column which is adjacent to the (n+1)-th pixel column comprises the second pixel electrodes and the third pixel electrodes arranged alternately, wherein n is a natural number,

any one of the second and third pixel electrodes is disposed in the n-th pixel column in a row and the other one of the second and third pixel electrodes is disposed in the (n+2)-th pixel column in the same row, and

in regions of the organic common layer which overlap the third pixel electrodes, the organic common layer emits light, and

in regions of the organic common layer which overlap the first pixel electrodes and the second pixel electrodes, the organic common layer does not emit light.

19. The method of claim 18 , wherein the forming of the pixel defined layer, which comprises the apertures arranged in the matrix, on the substrate comprises forming one or more spacers which protrude from a top surface of the pixel defined layer.