Organic electroluminescence display device and method of fabricating the same

1. An organic electroluminescence display device, comprising:

a substrate where a plurality of red (R), green (G) and blue (B) pixel regions are defined;

a plurality of transparent electrodes on the substrate, each transparent electrode disposed in each pixel region;

a buffer layer on the substrate in intervals among the transparent electrodes, the buffer layer overlapping side portions of the transparent electrodes;

a separator on the buffer layer and extending in one direction, the separator disposed between adjacent pixel regions;

a hole injection/transporting layer over the substrate and continuously covering the plurality of transparent electrodes, the buffer layer and the separator;

a luminous layer on the hole injection/transporting layer and divided into each R, G or B pixel region; and

a cathode electrode on the hole injection/transporting layer covering the divided luminous layer, the cathode electrode disposed all over the substrate to connect the R, G and B pixel regions.

2. The device according to claim 1 , wherein the separator is a liquefied high molecular substance.

3. The device according to claim 1 , wherein the separator has a height ranging from about 5 to 15 micrometers (μm).

4. The device according to claim 1 , wherein the buffer layer is an insulating material.

5. The device of claim 4 , wherein the insulating material is one of silicon oxide (SiO 2 ) and silicon nitride (SiN X ).

6. The device according to claim 1 , wherein the buffer layer overlaps the side portions of the transparent electrode by a distance of about 3 to 10 micrometers (μm).

7. The device according to claim 1 , wherein the hole injection/transporting layer includes a high molecular substance.

8. An organic electroluminescence display device, comprising:

a substrate where a plurality of red (R), green (G) and blue (B) pixel regions are defined;

a plurality of transparent electrodes on the substrate, each transparent electrode disposed in each pixel region;

a buffer layer on the substrate in intervals among the transparent electrodes, the buffer layer overlapping side portions of the transparent electrodes;

a separator on the buffer layer and extending in one direction, wherein the separator is a line type that is patterned along the pixel regions;

a hole injection/transporting layer over the substrate and continuously covering the plurality of transparent electrodes, the buffer layer and the separator;

a luminous layer on the hole injection/transporting layer and divided into each R, G or B pixel region; and

a cathode electrode on the hole injection/transporting layer covering the divided luminous layer, the cathode electrode disposed all over the substrate to connect the R, G and B pixel regions.

9. A method of fabricating an organic electroluminescence display device, comprising:

providing a substrate defining a plurality of red (R), green (G) and blue (B) pixel regions on the substrate;

forming a plurality of transparent electrodes on the substrate, each transparent electrode disposed in each pixel region;

forming a buffer layer on the substrate in intervals among the transparent electrodes, the buffer layer overlapping side portions of the transparent electrodes;

forming a separator on the buffer layer, the separator arranged on one direction and disposed between adjacent pixel regions;

forming a hole injection/transporting layer over the substrate to continuously cover the plurality of transparent electrodes, the buffer layer and the separator; forming a luminous layer on the hole injection/transporting layer, the luminous layer divided into each R, G or B pixel region; and

forming a cathode electrode on the hole injection/transporting layer to cover the divided luminous layer, the cathode electrode disposed all over the substrate to connect the R, G and B pixel regions.

10. The method according to claim 9 , wherein forming the hole injection/transporting layer uses a roll coating apparatus.

11. The method according to claim 9 , wherein the separator is a liquefied high molecular substance.

12. The method according to claim 9 , wherein the separator has a height ranging from about 5 to 15 micrometers (μm).

13. The method according to claim 9 , wherein the buffer layer is an insulating material.

14. The method according to claim 13 , wherein the insulating material is one of silicon oxide (SiO 2 ) and silicon nitride (SiN X ).

15. The method according to claim 9 , wherein the buffer layer overlaps the side portions of the transparent electrode by a distance of about 3 to 10 micrometers (μm).

16. The method according to claim 9 , wherein the hole injection/transporting layer includes a high molecular substance.

17. A method of fabricating an organic electroluminescence display device, comprising:

providing a substrate defining a plurality of red (R), green (G) and blue (B) pixel regions on the substrate;

forming a plurality of transparent electrodes on the substrate, each transparent electrode disposed in each pixel region;

forming a buffer layer on the substrate in intervals among the transparent electrodes, the buffer layer overlapping side portions of the transparent electrodes;

forming a separator on the buffer layer, wherein the separator is a line type that is patterned along the pixel regions;

forming a hole injection/transporting layer over the substrate to continuously cover the plurality of transparent electrodes, the buffer layer and the separator;

forming a luminous layer on the hole injection/transporting layer, the luminous layer divided into each R, G or B pixel region; and

forming a cathode electrode on the hole injection/transporting layer to cover the divided luminous layer, the cathode electrode disposed all over the substrate to connect the R, G and B pixel regions.