Organic light-emitting display device

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

a substrate;

a plurality of pixel electrodes over the substrate, the plurality of pixel electrodes are separated from each other;

a pixel-defining layer having a plurality of openings respectively corresponding to the plurality of pixel electrodes;

a first intermediate layer over a first pixel electrode of the plurality of pixel electrodes, the first intermediate layer including a first light-emitting layer;

a second intermediate layer over a second pixel electrode of the plurality of pixel electrodes, the second intermediate layer including a second light-emitting layer;

a first counter electrode over the first intermediate layer, and

a second counter electrode over the second intermediate layer,

wherein a portion of the first intermediate layer and a portion of the second intermediate layer overlap each other over an upper surface of the pixel-defining layer, wherein:

the first intermediate layer includes a first sub-intermediate layer between the first pixel electrode and the first light-emitting layer, and

the second intermediate layer includes a second sub-intermediate layer between the second pixel electrode and the second light-emitting layer, and

wherein portions of the first sub-intermediate layer and the second sub-intermediate layer overlap each other in a region between neighboring pixel electrodes.

2. The organic light-emitting display device as claimed in claim 1 , further comprising an insulating layer between the substrate and the pixel-defining layer, wherein a portion of the pixel-defining layer directly contacts an upper surface of the insulating layer.

3. The organic light-emitting display device as claimed in claim 2 , wherein an overlapping region between the portions of the first and second intermediate layers corresponds to a contact region between the portion of the pixel-defining layer and the upper surface of the insulating layer.

4. The organic light-emitting display device as claimed in claim 3 , wherein each of the first and second intermediate layers further includes at least one of a hole transport layer, a hole injection layer, an electron transport layer, or an electron injection layer.

5. The organic light-emitting display device as claimed in claim 1 , wherein:

the first intermediate layer includes a third sub-intermediate layer between the first light-emitting layer and the first counter electrode, and

the second intermediate layer includes a fourth sub-intermediate layer between the second light-emitting layer and the second counter electrode, and

wherein portions of the third sub-intermediate layer and the fourth sub-intermediate layer overlap each other in a region between neighboring pixel electrodes.

6. The organic light-emitting display device as claimed in claim 1 , further comprising a protection film over the first and second counter electrodes.

7. The organic light-emitting display device as claimed in claim 6 , wherein the protection film includes a transparent material.

8. The organic light-emitting display device as claimed in claim 6 , wherein the protection film includes a conductive material.

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

a substrate; and

a plurality of organic light-emitting diodes (OLEDs) over the substrate, the plurality of OLEDs including a first OLED emitting light of a first color and a second OLED emitting light of a second color,

wherein a plurality of pixel electrodes of the plurality of OLEDs are separated each other on the substrate, edges of the plurality of pixel electrodes are covered by a pixel-defining layer, and the pixel-defining layer has a plurality of openings respectively corresponding to the plurality of pixel electrodes,

wherein a first intermediate layer of the first OLED includes a first portion overlapping a first pixel electrode of the plurality of pixel electrodes and a second portion extending from the first portion,

wherein a second intermediate layer of the first OLED includes a third portion overlapping a second pixel electrode of the plurality of pixel electrodes and a fourth portion extending from the third portion,

wherein the second portion and the fourth portion overlap each other over an upper surface of the pixel-defining layer,

wherein each of the first and second intermediate layers includes a sub-intermediate layer, the sub-intermediate layer includes at least one of a hole transport layer, a hole injection layer, an electron transport layer, or an electron injection layer, and

wherein the sub-intermediate layer of the first intermediate layer overlaps the sub-intermediate layer of the second intermediate layer in a region over the upper surface of the pixel-defining layer.

10. The organic light-emitting display device as claimed in claim 9 , wherein an overlapping region between the second portion and the fourth portion corresponds to a region between neighboring pixel electrodes.

11. The organic light-emitting display device as claimed in claim 10 , further comprising an insulating layer between the substrate and the pixel-defining layer, wherein the pixel-defining layer contacts an upper surface of the insulating layer in the overlapping region.

12. The organic light-emitting display device as claimed in claim 9 , wherein:

the first and second OLEDs respectively includes a first and second light-emitting layers, and

in the region, at least one of the first and second light-emitting layers is between the sub-intermediate layer of the first intermediate layer overlaps the sub-intermediate layer.

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

a substrate;

a plurality of pixel electrodes over the substrate, the plurality of pixel electrodes are separated from each other;

a pixel-defining layer having a plurality of openings respectively corresponding to the plurality of pixel electrodes;

a first intermediate stack over a first pixel electrode of the plurality of pixel electrodes, the first intermediate stack including a first light-emitting layer; and

a second intermediate stack over a second pixel electrode of the plurality of pixel electrodes, the second intermediate stack including a second light-emitting layer;

wherein the first light-emitting layer and the second light-emitting layer partially overlap each other in a region between neighboring pixel electrodes.

14. The organic light-emitting display device as claimed in claim 13 , wherein an overlapping region between the first intermediate stack and the second intermediate stack does not overlap the pixel electrodes.

15. The organic light-emitting display device as claimed in claim 13 , wherein an overlapping region between the first intermediate stack and the second intermediate stack is located over an upper surface of the pixel-defining layer.

16. The organic light-emitting display device as claimed in claim 13 , further comprises a first counter electrode over the first intermediate stack, and a second counter electrode over the second intermediate stack.

17. The organic light-emitting display device as claimed in claim 13 , wherein the first intermediate stack further comprises a first sub-intermediate layer, and the second intermediate stack further comprises a second sub-intermediate layer.

18. The organic light-emitting display device as claimed in claim 17 , wherein each of the first sub-intermediate layer and the second sub-intermediate layer comprises at least one of a hole transport layer, a hole injection layer, an electron transport layer, or an electron injection layer.