Organic light-emitting display device and method of manufacturing the same

1. An organic light-emitting display device, comprising:

a substrate;

a pixel array layer on the substrate, the pixel array layer comprising a plurality of pixels, each of the plurality of pixels comprising an organic light-emitting device;

an encapsulation layer covering the pixel array layer; and

a touch sensing layer on the encapsulation layer, the touch sensing layer comprising:

a plurality of first touch electrodes; and

a plurality of second touch electrodes,

wherein the plurality of first and second touch electrodes each comprise:

a transparent conductive layer on an upper surface of the encapsulation layer, and

a mesh metal layer on the transparent conductive layer, the mesh metal layer comprising at least three metal layers, and

wherein the mesh metal layer comprises:

as a first metal layer among the at least three metal layers, a reflective layer on the transparent conductive layer,

as a second metal layer among the at least three metal layers, a light path change layer on the reflective layer, and

as a third metal layer among the at least three metal layers, a semi-transmissive layer on the light path change layer.

2. The organic light-emitting display device of claim 1 , wherein each of the plurality of first and second touch electrodes has a reflectance of 10% or less of external light incident thereon.

3. The organic light-emitting display device of claim 1 , wherein the semi-transmissive layer is thinner than the reflective layer.

4. The organic light-emitting display device of claim 3 , wherein a material of the reflective layer is the same as a material of the semi-transmissive layer.

5. The organic light-emitting display device of claim 1 , wherein the reflective layer comprises one or more of: molybdenum titanium (MoTi) and molybdenum (Mo).

6. The organic light-emitting display device of claim 1 , wherein the light path change layer comprises one or more of: indium tin oxide (ITO) and indium zinc oxide (IZO).

7. The organic light-emitting display device of claim 1 , further comprising:

a bridge configured to connect adjacent second touch electrodes, the bridge being directly on the upper surface of the encapsulation layer and comprising a metal layer comprising at least three layers of metal.

8. The organic light-emitting display device of claim 7 , further comprising:

a touch insulation layer on the encapsulation layer, the touch insulation layer being configured to cover the bridge,

wherein the plurality of first touch electrodes and the plurality of second touch electrodes are directly on an upper surface of the touch insulation layer.

9. The organic light-emitting display device of claim 7 , wherein the bridge has a thickness in a range of 500 Ř2,000 Å.

10. A method of manufacturing an organic light-emitting display device, the method comprising:

providing a substrate;

providing a pixel array layer on the substrate, the providing the pixel array layer comprising providing a plurality of pixels, each of the plurality of pixels comprising an organic light-emitting device;

covering the pixel array layer with an encapsulation layer; and

providing a touch sensing layer on the encapsulation layer, the providing the touch sensing layer comprising:

providing a plurality of first touch electrodes; and

providing a plurality of second touch electrodes,

wherein the providing the plurality of first and second touch electrodes each comprise:

providing a transparent conductive layer on an upper surface of the encapsulation layer, and

providing a mesh metal layer on the transparent conductive layer, the mesh metal layer comprising at least three metal layers, and

wherein the providing the mesh metal layer comprises:

providing, as a first metal layer among the three metal layers, a reflective layer on the transparent conductive layer,

providing, as a second metal layer among the three metal layers, a light path change layer on the reflective layer, and

providing, as a third metal layer among the three metal layers, a semi-transmissive layer on the light path change layer.

11. The method of claim 10 , wherein each of the plurality of first and second touch electrodes has a reflectance of 10% or less of external light incident thereon.

12. The method of claim 10 , wherein the semi-transmissive layer is thinner than the reflective layer.

13. The method of claim 12 , wherein a material of the reflective layer is the same as a material of the semi-transmissive layer.

14. The method of claim 10 , wherein the reflective layer comprises one or more of: molybdenum titanium (MoTi) and molybdenum (Mo).

15. The method of claim 10 , wherein the light path change layer comprises one or more of: indium tin oxide (ITO) and indium zinc oxide (IZO).

16. The method of claim 10 , further comprising:

providing a bridge connecting adjacent second touch electrodes, the bridge being directly on the upper surface of the encapsulation layer and comprising a metal layer comprising at least three layers of metal.

17. The method of claim 16 , further comprising:

providing a touch insulation layer on the encapsulation layer, the touch insulation layer covering the bridge,

wherein the plurality of first touch electrodes and the plurality of second touch electrodes are provided directly on an upper surface of the touch insulation layer.

18. The method of claim 16 , wherein the bridge has a thickness in a range of 500 Ř2,000 Å.