Antenna device and display device including the same

Patent metadata

Field	Value
Publication number	US-11955704-B2
Application number	US-202117492903-A
Country	US
Kind code	B2
Filing date	Oct 4, 2021
Priority date	Apr 4, 2019
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

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.

First claim

What is claimed is:

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 .

Assignees

• Dongwoo Fine Chem Co Ltd
• Postech Res & Business Dev Found

Inventors

• Huh Yoon Ho
• Kim Jong Min
• Ryu Han Sub
• Hong Won Bin

Classifications

• H01Q1/38 Primary

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title

• H01Q1/364 Primary

  using a particular conducting material, e.g. superconductor · CPC title

• H01Q19/005

  Patch antenna using one or more coplanar parasitic elements · CPC title

• H01Q1/523

  between antennas of an array · CPC title