Display device

1. A display device comprising: a plurality of light emitting elements;

a pixel definition layer having a plurality of openings defining positions of the light emitting elements;

an encapsulation layer on the light emitting elements and the pixel definition layer;

an insulation layer on the encapsulation layer and having a smaller width than a portion of the pixel definition layer between two adjacent openings therein; and

a plurality of touch sensing cells on the insulation layer,

wherein each of the light emitting elements comprises a first electrode exposed through one of the openings in the pixel definition layer, an emission layer on the first electrode, and a second electrode on the emission layer.

2. The display device of claim 1 , wherein the insulation layer overlaps the pixel definition layer.

3. The display device of claim 1 , further comprising a black matrix having a greater width than the insulation layer and covering the insulation layer and the touch sensing cells.

4. The display device of claim 3 , wherein the black matrix overlaps the pixel definition layer.

5. The display device of claim 3 , further comprising a plurality of color filters on the encapsulation layer and the black matrix.

6. The display device of claim 5 , wherein adjacent ones of the color filters contact each other on the black matrix.

7. The display device of claim 1 , wherein the insulation layer does not overlap the first electrode of the light emitting elements.

8. The display device of claim 1 , wherein the touch sensing cells comprise a plurality of first touch sensing cells connected to each other by first connection patterns along a first direction and a plurality of second touch sensing cells connected to each other by second connection patterns along a second direction.

9. The display device of claim 8 , wherein the first and second touch sensing cells and the first and second connection patterns overlap the insulation layer.

10. The display device of claim 8 , wherein the first and second touch sensing cells and the first and second connection patterns overlap the insulation layer when viewed from the top and have substantially the same shape as the insulation layer.

11. The display device of claim 8 , wherein the second connection patterns are below the insulation layer and are connected to the second touch sensing cells through contact openings in the insulation layer.

12. The display device of claim 1 , wherein the insulation layer comprises an organic insulating layer.

13. The display device of claim 1 , further comprising a buffer layer between the encapsulation layer and the insulation layer.

14. The display device of claim 1 , wherein the touch sensing cells comprise conductive lines having a mesh shape.

15. The display device of claim 14 , wherein the conductive lines of the touch sensing cells have a smaller width than the insulation layer.

16. The display device of claim 1 , wherein the insulation layer has a mesh shape.