Transparent display device
A transparent display device according to example embodiments includes a substrate having a pixel area and a transmission area, a pixel circuit on the pixel area of the substrate, an insulation structure on the substrate to cover the pixel circuit, a first electrode on the pixel area of the substrate, the first electrode being at least partially penetrated the insulation structure and electrically connected to the pixel circuit, a display layer on the first electrode, a second electrode facing the first electrode and covering the display layer, and an anti-diffraction layer on the substrate, the anti-diffraction layer at least partially overlapping the transmission area and including a plurality of nano wires.
1. A transparent display device, comprising:
a substrate having a pixel area and a transmission area;
a pixel circuit on the pixel area of the substrate;
an insulation structure on the substrate to cover the pixel circuit;
a first electrode on the pixel area of the substrate, the first electrode at least partially penetrating the insulation structure and electrically connected to the pixel circuit;
a display layer on the first electrode;
a second electrode facing the first electrode and covering the display layer; and
an anti-diffraction layer on the substrate, the anti-diffraction layer at least partially overlapping the transmission area and including a plurality of nano wires.
2. The device as claimed in claim 1 , wherein the nano wires are randomly arranged in a network structure.
3. The device as claimed in claim 2 , wherein the nano wires includes a metal.
4. The device as claimed in claim 2 , wherein a maximum spacing between adjacent nano wires is within a range of about 100 nm to about 500 nm.
5. The device as claimed in claim 1 , wherein a first portion of the anti-diffraction layer is in the same layer as the first electrode.
6. The device as claimed in claim 5 , wherein a second portion of the anti-diffraction layer covers the first electrode.
7. The device as claimed in claim 1 , further including:
a pixel defining layer on the insulation structure, the pixel defining layer exposing the first electrode,
wherein a first portion of the anti-diffraction layer is disposed on the pixel defining layer.
8. The device as claimed in claim 7 , wherein a second portion of the anti-diffraction layer overlaps the pixel area, and is disposed below the display layer.
9. The device as claimed in claim 7 , wherein a second portion of the anti-diffraction layer overlaps the pixel area, and wherein the second portion of the anti-diffraction layer is on the display layer.
10. The device as claimed in claim 1 , wherein the second electrode overlaps the pixel area and the transmission area, a portion of the anti-diffraction layer is disposed on the second electrode.
11. The device as claimed in claim 10 , further including:
a pixel defining layer that defines a transmitting window exposing the insulation structure of the transmission area,
wherein the second electrode and the anti-diffraction layer are sequentially stacked on the transmission area along a surface of the transmitting window.
12. The device as claimed in claim 1 , wherein:
the pixel circuit includes
an active pattern,
a gate electrode,
a source electrode, and
a drain electrode,
the insulation structure includes:
a gate insulation layer on the substrate to cover the active pattern;
an insulating interlayer on the gate insulation layer to cover the gate electrode; and
a via insulation layer on the insulating interlayer to cover the source electrode and the drain electrode,
the source electrode and the drain electrode penetrate the insulation interlayer and the gate insulation layer, and contact the active pattern, and
the first electrode is on the via insulation layer, penetrates the via insulation layer, and contacts the drain electrode.
13. The device as claimed in claim 12 , wherein:
the via insulation layer is individually disposed on the pixel area,
a transmitting window is defined on the transmission area by sidewalls of the via insulation layer and a upper surface of the insulating interlayer, and
the second electrode and the anti-diffraction layer are sequentially stacked on the transmission area along a surface of the transmitting window.
14. The device as claimed in claim 12 , wherein:
the via insulation layer and the insulating interlayer are on the pixel area,
a transmitting window is defined on the transmission area by sidewalls of the via insulation layer and a upper surface of the gate insulation layer, and
the second electrode and the anti-diffraction layer are sequentially stacked on the transmission area along a surface of the transmitting window.
15. The device as claimed in claim 1 , further including:
a capping layer continuously disposed on the pixel area and the transmission area of the second electrode,
wherein a portion of the anti-diffraction layer is on the capping layer.
16. The device as claimed in claim 15 , wherein the anti-diffraction layer is along a upper surface of the capping layer.
17. The device as claimed in claim 15 , further including a packed layer and an encapsulation substrate that are sequentially stacked on the capping layer.
18. The device as claimed in claim 17 , wherein the portion of the anti-diffraction layer is interposed between the packed layer and the encapsulation substrate.
19. The device as claimed in claim 17 , wherein the portion of the anti-diffraction layer is on the encapsulation substrate.
20. The device as claimed in claim 19 , wherein the anti-diffraction layer is along an upper surface of the encapsulation substrate.