Organic electroluminescence display device having organic passivation layer

1. A pixel in an organic EL display device, comprising:

a substrate;

an emission region for emitting light; and

a wiring region including a switching thin film transistor and a driving thin film transistor, the switching thin film transistor and the driving thin film transistor being arranged between the substrate and an organic light emitting layer,

wherein light emitted from the organic light emitting layer is emitted to the substrate through the wiring region and the emission region.

2. The pixel of claim 1 , wherein the planarized passivation layer is formed of benzocyclobutene (BCB) or acryl resin.

3. The pixel of claim 1 , further comprising:

a planarized passivation layer formed over the switching and driving thin film transistors and having a via hole coupling a first pixel electrode to a source or drain electrode of the driving thin film transistor.

4. The pixel of claim 3 , further comprising:

a pixel defining layer having an opening in the wiring region and the emitting region and exposing a portion of the first pixel electrode,

wherein the first pixel electrode is formed in the wiring region and the emitting region,

wherein the organic layer is formed on the pixel defining layer and the portion of the first pixel electrode exposed by the opening.

5. The pixel of claim 3 , wherein the planarized passivation layer is directly on the switching thin film transistor and the driving thin film transistor.

6. The pixel of claim 5 , wherein the first pixel electrode is directly on the planarized passivation layer.

7. An organic electroluminescence (EL) display device, comprising:

an insulating substrate including:

a wiring region having a switching thin film transistor and a driving thin film transistor; and

an emission region for emitting light;

a passivation layer formed on an upper part of the insulating substrate;

a lower electrode formed on the passivation layer and in the wiring region and the emission region;

a pixel defining layer comprising an opening part exposing a part of the wiring region and the emission region;

an organic thin film layer formed on the pixel defining layer and a portion of the lower electrode exposed by the opening part; and

an upper electrode formed on the organic thin film layer,

wherein light emitted from the organic thin film layer is emitted to the insulating substrate through the wiring region and the emission region.

8. The organic EL display device of claim 7 , wherein the passivation layer is formed of an insulating organic material capable of planarization.

9. The organic EL display device of claim 8 , wherein the passivation layer is directly on the switching thin film transistor and the driving thin film transistor.

10. The organic EL display device of claim 9 , wherein the lower electrode is directly on the passivation layer.

11. The organic EL display device of claim 8 , wherein the passivation layer is formed of benzocyclobutene (BCB) or acryl resin.

12. The organic EL display device of claim 8 , wherein the organic thin film layer is formed in a stripe shape.