Antenna device and display device including the same
An antenna device according to an embodiment of the present invention includes a dielectric layer, an antenna unit disposed on a top surface of the dielectric layer, the antenna unit including a radiator and a transmission line connected to the radiator, a dummy electrode separated from the antenna unit on the top surface of the dielectric layer, the dummy electrode at least partially surrounding the antenna unit, and a blocking pattern arranged around the antenna unit in the dummy electrode. Radiation interruption from the dummy electrode is prevented by the blocking pattern to improve radiation reliability.
1. An antenna device, comprising:
a dielectric layer;
an antenna unit disposed on a top surface of the dielectric layer, the antenna unit comprising a radiator and a transmission line connected to the radiator;
a dummy electrode separated from the antenna unit on the top surface of the dielectric layer, the dummy electrode at least partially surrounding the antenna unit; and
a blocking pattern arranged around the antenna unit in the dummy electrode, wherein the blocking pattern has an island shape separated in the dummy electrode.
2. The antenna device of claim 1 , wherein each of the antenna unit and the dummy electrode includes a mesh structure.
3. The antenna device of claim 2 , wherein the blocking pattern includes a mesh structure the same as the mesh structure included in the dummy electrode.
4. The antenna device of claim 1 , wherein the blocking pattern comprises a plurality of blocking patterns arranged along a perimeter of the antenna unit.
5. The antenna device of claim 1 , wherein the radiator comprises a plurality of radiators arranged on the top surface of the dielectric layer.
6. The antenna device of claim 5 , further comprising a pad electrode independently provided for each of the plurality of radiators.
7. The antenna device of claim 5 , wherein the plurality of radiators comprise a first radiator and a second radiator adjacent to each other; and
the first radiator and the second radiator are coupled by the transmission line to form a radiator group.
8. The antenna device of claim 7 , wherein the blocking pattern is disposed between the first radiator and the second radiator.
9. The antenna device of claim 7 , wherein the radiator group comprises a plurality of radiator groups arranged on the top surface of the dielectric layer.
10. The antenna device of claim 9 , further comprising a pad electrode independently provided for each of the plurality of radiator groups.
11. The antenna device of claim 1 , further comprising a ground layer disposed on a bottom surface of the dielectric layer.
12. The antenna device of claim 1 , wherein a ratio of an area of the blocking pattern relative to an area of the radiator is from 0.4 to 0.85.
13. The antenna device of claim 1 , wherein a spacing distance between the radiator and the dummy electrode is from 2 to 10 μm.
14. The antenna device of claim 1 , wherein the antenna unit, the dummy electrode and the blocking pattern 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), molybdenum (Mo), calcium (Ca) and an alloy thereof.
15. A display device comprising the antenna device of claim 1 .