Transparent touch display apparatus

1. A transparent touch display apparatus comprising:

a device substrate including an emission area and a transmission area, external light passing through the transmission area;

a light-emitting device on the emission area of the device substrate, the transmission area being disposed outside the light-emitting device;

an encapsulating element on the device substrate, the encapsulating element covering the light-emitting device;

a routing line on the encapsulating element, the routing line disposed outside the emission area and the transmission area;

a touch electrode connected to the routing line, the touch electrode extending on the transmission area; and

a touch line extending between the emission area and the transmission area,

wherein the touch electrode includes a touch pattern of a mesh shape on the transmission area, which extends in a first direction and a second direction different from the first direction,

wherein a transmittance of the touch electrode is higher than a transmittance of the routing line,

wherein the routing line includes a first conductive layer and a second conductive layer, which are sequentially stacked on the encapsulating element,

wherein a transmittance of the first conductive layer is higher than a transmittance of the second conductive layer, and

wherein the touch line is connected to the routing line, overlaps with the routing line, and extends in parallel with the routing line.

2. The transparent touch display apparatus according to claim 1 , wherein the touch electrode is disposed on the encapsulating element.

3. The transparent touch display apparatus according to claim 2 , further comprising: a touch insulating layer between the touch electrode and the routing line,

wherein the touch electrode is electrically connected to the routing line through a touch contact hole in the touch insulating layer.

4. The transparent touch display apparatus according to claim 1 , further comprising:

a color filter on the encapsulating element, the color filter overlapping with the emission area; and

a black matrix disposed side by side with the color filter, the black matrix covering the routing line,

wherein the black matrix is disposed outside the emission area and the transmission area.

5. The transparent touch display apparatus according to claim 1 , wherein the touch electrode includes one of ITO and IZO.

6. The transparent touch display apparatus according to claim 1 , further comprising a touch pad on the device substrate, the touch pad being spaced away from the encapsulating element,

wherein the touch pad includes the same material as the routing line.

7. The transparent touch display apparatus according to claim 1 , wherein the second conductive layer has an electrical conductivity higher than the first conductive layer.

8. The transparent touch display apparatus according to claim 1 , wherein the touch electrode includes the same material as the first conductive layer.

9. The transparent touch display apparatus according to claim 8 , wherein the touch electrode is disposed on the same layer as the routing line.

10. A transparent touch display apparatus comprising:

a device substrate including an emission area and a transmission area, external light passing through the transmission area;

a light-emitting device on the emission area of the device substrate, the transmission area being disposed outside the light-emitting device;

touch electrodes disposed side by side on the transmission area of the device substrate;

routing lines respectively connected to the touch electrodes, the routing lines disposed outside the emission area and the transmission area; and

a touch line extending between the emission area and the transmission area,

wherein each of the touch electrodes includes a touch pattern of a mesh shape on the transmission area, which extends in a first direction and a second direction different from the first direction,

wherein each of the touch electrodes includes a transparent conductive material,

wherein each of the routing line includes a first conductive layer and a second conductive layer, which are sequentially stacked on the encapsulating element,

wherein a transmittance of the first conductive layer is higher than a transmittance of the second conductive layer, and

wherein the touch line is connected to one of the routing lines, overlaps with the corresponding routing line, and extends in parallel with the corresponding routing line.

11. The transparent touch display apparatus according to claim 10 , wherein the second conductive layer of each of the routing lines has a resistance lower than the touch electrodes.

12. The transparent touch display apparatus according to claim 10 , wherein the second conductive layer of each of the routing lines includes a metal.

13. The transparent touch display apparatus according to claim 10 , wherein the second direction is perpendicular to the first direction.

14. The transparent touch display apparatus according to claim 10 , wherein each of the touch electrodes is connected to a corresponding one of the routing lines at the outside of the emission area and the transmission area.

15. The transparent touch display apparatus according to claim 10 , further comprising a touch insulating layer covering the routing lines, wherein the touch electrodes are disposed on the touch insulating layer.

16. The transparent touch display apparatus according to claim 15 , further comprising:

a cover substrate on the light-emitting device, the touch electrodes, and the routing lines;

a color filter on a lower surface of the cover substrate toward the device substrate, the color filter overlapping with the light-emitting device;

a black matrix disposed side by side with the color filter, the black matrix overlapping with the routing lines; and

a cover planarization layer on the lower surface of the cover substrate, the cover planarization layer covering the color filter and the black matrix.

17. The transparent touch display apparatus according to claim 16 , further comprising:

an upper passivation layer covering the light-emitting device;

a cover passivation layer on the upper passivation layer; and

an adhesive layer between the upper passivation layer and the cover passivation layer,

wherein the routing lines and the touch electrodes are disposed between the cover passivation layer and the cover planarization layer.