Display device

1. A display device, comprising:

a substrate including a first plastic layer, a second plastic layer on the first plastic layer, and a black organic layer between the first and second plastic layers;

a buffer layer on the substrate;

a thin film transistor on the buffer layer, wherein the thin film transistor includes a semiconductor layer and a gate electrode overlapping a channel region of the semiconductor layer; and

a plurality of display elements, at least one of the display elements being electrically connected to the thin film transistor, the display elements respectively being arranged in a plurality of pixels.

2. The display device as claimed in claim 1 , wherein the first and second plastic layers are flexible.

3. The display device as claimed in claim 1 , wherein the substrate further includes an inorganic layer between the first and second plastic layers.

4. The display device as claimed in claim 3 , wherein the inorganic layer includes at least one of amorphous silicon, silicon oxide, and silicon nitride.

5. The display device as claimed in claim 1 , wherein the black organic layer contacts at least one of the first and second plastic layers.

6. The display device as claimed in claim 1 , wherein a thickness of the black organic layer is smaller than those of the first and second plastic layers.

7. The display device as claimed in claim 1 , wherein the black organic layer has a thickness of about 5 μm or less.

8. The display device as claimed in claim 1 , further comprising a light shield on the plurality of display elements.

9. The display device as claimed in claim 8 , wherein the light shield is arranged between adjacent pixels from among the plurality of pixels.

10. The display device as claimed in claim 8 , further comprising an encapsulation layer including at least one organic layer and at least one inorganic layer, the encapsulation layer being between the plurality of display elements and the light shield.

11. The display device as claimed in claim 8 , further comprising a color filter between light shields.

12. The display device as claimed in claim 1 , wherein the black organic layer is one body and corresponds to the plurality of pixels.

13. The display device as claimed in claim 1 , wherein the buffer layer includes an inorganic material.

14. The display device as claimed in claim 1 , wherein one of the semiconductor layer and the gate electrode is directly on the buffer layer.

15. The display device as claimed in claim 1 , wherein each of the plurality of display elements includes:

a pixel electrode electrically connected to the thin film transistor;

an intermediate layer on the pixel electrode and including an emission layer; and

an opposite electrode, which is a semi-transmissive layer, the opposite electrode being on the intermediate layer.

16. The display device as claimed in claim 15 , wherein:

the plurality of display elements include a first display element of a first color and a second display element of a second color, and

a distance between a pixel electrode of the first display element and an opposite electrode is different from a distance between a pixel electrode of the second display element and an opposite electrode.

17. The display device as claimed in claim 15 , further comprising:

a capping layer on the opposite electrode; and

a reflection prevention auxiliary layer on the opposite electrode with the capping layer provided therebetween.

18. The display device as claimed in claim 17 , wherein the reflection prevention auxiliary layer includes at least one of Ti, Mo, and Mn.

19. The display device as claimed in claim 17 , wherein light reflected by the opposite electrode destructively interferes with light reflected by the reflection prevention auxiliary layer.