Antenna structure and display device including the same
In an antenna structure according to exemplary embodiments of the present invention, a metal layer provided as a rear metal case of the display panel, a protecting layer and an antenna electrode layer are laminated in this order. The rear metal case may be used as a ground layer so that an additional space for the antenna is secured, and signal efficiency and reliability may be improved.
1. An antenna structure comprising:
a metal layer provided as a rear metal case of a display panel;
a protecting layer disposed on a bottom surface of the metal layer;
an antenna electrode layer disposed on a bottom surface of the protecting layer; and
a transparent resin film disposed between the protecting layer and the antenna electrode layer.
2. The antenna structure according to claim 1 , wherein the metal layer is provided as a ground layer for the antenna electrode layer.
3. The antenna structure according to claim 1 , wherein the protecting layer is provided as a dielectric layer.
4. The antenna structure according to claim 1 , further comprising a transparent adhesive layer disposed between the protecting layer and the transparent resin film.
5. The antenna structure according to claim 1 , wherein the antenna electrode layer comprises:
a radiating pattern;
a signal pad electrically connected with the radiating pattern; and
ground pads disposed to face each other with the signal pad interposed therebetween.
6. The antenna structure according to claim 5 , wherein the radiating pattern and the signal pad include at least one selected from the group consisting of silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), chromium (Cr), titanium (Ti), tungsten (W), niobium (Nb), tantalum (Ta), vanadium (V), iron (Fe), manganese (Mn), cobalt (Co), nickel (Ni), zinc (Zn), tin (Sn) and alloys thereof.
7. The antenna structure according to claim 5 , wherein the ground pad is electrically connected with the metal layer.
8. The antenna structure according to claim 7 , further comprising a ground contact penetrating the protecting layer to electrically connect the ground pad and the metal layer.
9. The antenna structure according to claim 7 , further comprising a ground wiring extending along a side face of the protecting layer to electrically connect the ground pad and the metal layer.
10. The antenna structure according to claim 5 , wherein the radiating pattern, the signal pad and the ground pad include a mesh structure.
11. The antenna structure according to claim 10 , wherein the mesh structure has a line width of 2 μm to 10 μm, and a thickness of 10 nm to 500 nm.
12. The antenna structure according to claim 10 , further comprising a dummy mesh layer disposed around the antenna electrode layer.
13. The antenna structure according to claim 1 , further comprising an antenna protecting layer disposed on the antenna electrode layer.
14. A display device comprising:
a display panel;
a metal layer provided as a rear metal case of the display panel;
a protecting layer disposed on a bottom surface of the metal layer;
an antenna electrode layer disposed on a bottom surface of the protecting layer; and
a transparent resin film disposed between the protecting layer and the antenna electrode layer.
15. The display device according to claim 14 , further comprising a window cover disposed on a visible surface of the display panel,
wherein the metal layer is disposed on a surface opposite to the visible surface of the display panel.