Organic light-emitting display device having touch sensor

1. An organic light-emitting display device comprising:

a light-emitting element disposed on a substrate;

an encapsulation unit disposed on the light-emitting element, the encapsulation unit including a first inorganic encapsulation film on the light-emitting element, a second inorganic encapsulation film on the first inorganic film, and an organic encapsulation film between the first inorganic encapsulation film and the second inorganic encapsulation film;

a touch insulating film disposed on the second inorganic encapsulation film of the encapsulation unit;

a touch sensor disposed on the touch insulating film;

a routing line connected to the touch sensor;

a touch pad connected to the routing line;

a plurality of connection electrodes disposed between the routing line and the substrate to connect the routing line and the touch pad to each other;

a crack prevention layer disposed on the plurality of connection electrodes, the crack prevention layer overlapping the plurality of connection electrodes; and

a trench penetrating the second inorganic encapsulation film and the touch insulating film to expose the crack prevention layer,

wherein the touch sensor comprises:

first touch electrodes arranged on the touch insulating film in a first direction, the first touch electrodes being connected to each other via first bridges; and

second touch electrodes arranged on the touch insulating film in a second direction, the second touch electrodes being connected to each other via second bridges,

wherein the first and second bridges and the first and second touch electrodes are formed of a same material as each other in a same plane, and the first and second bridges and the first and second touch electrodes are disposed on the touch insulating film, and

wherein the touch insulating film is disposed on the second inorganic encapsulation film in a non-active area where the touch pad is disposed.

2. The organic light-emitting display device according to claim 1 , wherein the first bridges extend in a convoluted form along the second bridges and the second touch electrodes, and are connected to first bridges and first touch electrodes disposed adjacent thereto in the first direction, and

wherein the second bridges are disposed between the first bridges, and are connected to second bridges and second touch electrodes disposed adjacent thereto in the second direction.

3. The organic light-emitting display device according to claim 1 , wherein the first bridges are disposed between the second bridges, and are connected to first bridges and first touch electrodes disposed adjacent thereto in the first direction, and

wherein the second bridges extend in a convoluted form along the first bridges and the first touch electrodes, and are connected to second bridges and second touch electrodes disposed adjacent thereto in the second direction.

4. The organic light-emitting display device according to claim 1 , further comprising:

color filters disposed on or under the touch sensor; and

black matrixes disposed between the color filters.

5. The organic light-emitting display device according to claim 1 , wherein at least one of the first bridges or the second bridges has therein a plurality of slits.

6. The organic light-emitting display device according to claim 1 , wherein the first and second directions are substantially perpendicular to each other.

7. The organic light-emitting display device according to claim 1 ,

wherein the routing line is disposed on a lateral surface of the encapsulation unit; and

wherein the touch pad is disposed on the touch insulating film.

8. The organic light-emitting display device according to claim 7 , wherein the first and second bridges, the first and second touch electrodes, the routing line and the touch pad are formed of a material selected from among ITO, IZO, IGZO, and silver nanowire (AgNW).

9. The organic light-emitting display device according to claim 7 , wherein each of the first and second touch electrodes comprises:

an opaque conductive film formed in a mesh structure; and

a transparent conductive film disposed on or under the opaque conductive film,

wherein each of the first and second bridges, the routing line and the touch pad comprises:

an opaque conductive film; and

a transparent conductive film disposed on or under the opaque conductive film in a same pattern as the opaque conductive film,

wherein the transparent conductive film is formed of a material selected from among ITO, IZO, IGZO, and silver nanowire (AgNW), and

wherein the opaque conductive film is formed of at least one material of Al, Ti, Cu, or Mo, and has a single-layer or multi-layer structure.

10. The organic light-emitting display device according to claim 9 , wherein the opaque conductive film of each of the first and second touch electrodes and the first and second bridges is disposed at a position corresponding to a bank forming a light-emitting area of the light-emitting element.

11. The organic light-emitting display device according to claim 7 , further comprising:

a lateral protective film covering a lateral surface of the touch pad.

12. The organic light-emitting display device according to claim 11 , further comprising:

a touch protective film exposing the routing line and the touch pad, the touch protective film overlapping the touch sensor,

wherein the lateral protective film and the touch protective film are formed of a same material.

13. The organic light-emitting display device according to claim 7 , wherein the substrate comprises a bending area and is formed of a flexible material, and

wherein the plurality of connection electrodes are disposed in the bending area.

14. The organic light-emitting display device according to claim 13 , wherein the crack prevention layer is formed of an organic insulating material.

15. The organic light-emitting display device according to claim 14 , wherein the touch pad is connected to the plurality of connection electrodes exposed through a pad contact hole penetrating the second inorganic encapsulation film and the touch insulating film.