Touch window

1. A touch window comprising:

an upper substrate including an active area and an inactive area;

a first intermediate layer on the upper substrate;

a printing layer having a structure of a plurality of layers and comprising an upper surface, a bottom surface, and a curved lateral surface connecting the upper surface and the bottom surface;

an electrode layer on the first intermediate layer;

a second intermediate layer on the electrode layer, and

a third intermediate layer provided on at least one of one surface and an opposite surface of the first intermediate layer,

wherein the first intermediate layer has a refractive index different from a refractive index of the second intermediate layer,

wherein the first intermediate layer includes a layer of an organic substance comprising resin,

wherein the first intermediate layer has a thickness in a range of 1 μm to 15 μm,

wherein the electrode layer comprises a sensing electrode and a wire electrode connected with the sensing electrode,

wherein the second intermediate layer covers a top surface and a lateral side of the sensing electrode,

wherein the second intermediate layer includes a layer of an organic substance comprising resin,

wherein a thickness of the second intermediate layer is in a range of 1 μm to 10 μm,

wherein the third intermediate layer is in direct contact with the first intermediate layer,

wherein the printing layer is only provided on the inactive area; and

wherein the first intermediate layer is only provided on the active area.

2. The touch window of claim 1 , wherein the refractive index of the second intermediate layer is greater than the refractive index of the first intermediate layer.

3. The touch window of claim 1 , wherein a difference between the refractive index of the first intermediate layer and the refractive index of the second intermediate layer is 0.2 or more.

4. The touch window of claim 1 , wherein at least one of the sensing electrode and the wire electrode has a shape of a mesh.

5. The touch window of claim 1 , wherein the third intermediate layer comprises an inorganic substance.

6. The touch window of claim 1 , wherein the third intermediate layer comprises at least one of SiO 2 , TiO 2 , Fe 2 O 3 , ZrO 2 , Al 2 O 3 , Y 2 O 3 , MgO, and Cr 2 O 3 .

7. The touch window of claim 1 , wherein the first to third intermediate layers have mutually different thicknesses.

8. The touch window of claim 1 , wherein at least one of the first and second intermediate layers has a thickness greater than a thickness of the third intermediate layer.

9. The touch window of claim 1 , wherein the third intermediate layer has a thickness in a range of 5 nm to 30 nm.

10. The touch window of claim 1 , wherein the electrode layer comprises a first electrode layer and a second electrode layer, wherein the electrode layer senses a touch position, and wherein the first electrode layer is provided on the first intermediate layer, the second electrode layer is provided on the second intermediate layer, and the first electrode layer crosses the second electrode layer.

11. The touch window of claim 1 , wherein the electrode layer comprises a first sensing electrode and a second sensing electrode extending in mutually different directions, and the first and second sensing electrodes are provided on a same surface of the first intermediate layer.

12. The touch window of claim 1 , further comprising a lower substrate on the second intermediate layer, wherein the electrode layer comprises a first sensing electrode and a second sensing electrode extending in mutually different directions, the first sensing electrode is provided on the first intermediate layer, and the second sensing electrode is provided on the lower substrate.

13. The touch window of claim 1 , wherein the upper substrate comprises an active area and an inactive area, the sensing electrode is on the active area and the wire electrode is disposed on the inactive area, and the first intermediate layer is interposed between the printing layer and a wire electrode layer.

14. The touch window of claim 1 , wherein the second intermediate layer covers the sensing electrode and the wire electrode.

15. The touch window of claim 14 , wherein the second intermediate layer covers at least one of a top surface and a lateral side of the wire electrode.

16. The touch window of claim 1 , wherein the sensing electrode comprises a first sensing electrode and a second sensing electrode, the first sensing electrode is provided on the first intermediate layer, the second sensing electrode is provided on the second intermediate layer, and the first sensing electrode crosses the second sensing electrode.