Antenna device and display device including the same

Patent metadata

Field	Value
Publication number	US-12095174-B2
Application number	US-202217751917-A
Country	US
Kind code	B2
Filing date	May 24, 2022
Priority date	Nov 25, 2019
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

An antenna device according to an embodiment of the present invention includes a dielectric layer, a radiator disposed on a top surface of the dielectric layer, a transmission line connected to a side of the radiator on the dielectric layer, a signal pad connected to an end portion of the transmission line, a ground pad disposed around the signal pad, and an auxiliary radiator extending from the ground pad to be parallel to the transmission line.

First claim

What is claimed is:

1. An antenna device, comprising:
a dielectric layer;
a radiator disposed on a top surface of the dielectric layer;
a transmission line connected to a side of the radiator on the dielectric layer;
a signal pad connected to an end portion of the transmission line;
a ground pad disposed around the signal pad; and
an auxiliary radiator extending from the ground pad to be parallel to the transmission line,
wherein the auxiliary radiator has an area larger than that of the ground pad, and the auxiliary radiator has a width smaller than that of the ground pad.

2. The antenna device according to claim 1 , wherein the antenna device satisfies Equation 1:
0.3< D 2 /D 1 <0.99  [Equation 1]

wherein D 1 is a length of the transmission line, and D 2 is a length of the auxiliary radiator.

3. The antenna device according to claim 1 , wherein the auxiliary radiator is electrically and physically separated from the radiator and the transmission line.

4. The antenna device according to claim 1 , wherein the ground pad includes a pair of ground pads facing each other with the signal pad interposed therebetween.

5. The antenna device according to claim 4 , wherein the auxiliary radiator extends from each of the pair of ground pads.

6. The antenna device according to claim 1 , wherein the auxiliary radiator is a single member integrally connected to the ground pad.

7. The antenna device according to claim 6 , wherein the auxiliary radiator has the same shape as that of the ground pad, and has an internal structure different from that of the ground pad.

8. The antenna device according to claim 7 , wherein the auxiliary radiator has a mesh structure, and the ground pad has a solid pattern structure.

9. The antenna device according to claim 8 , further comprising a dummy mesh pattern on the dielectric layer to be disposed around the radiator and the auxiliary radiator.

10. The antenna device according to claim 1 , wherein the radiator and the auxiliary radiator are disposed at the same layer.

11. The antenna device according to claim 1 , further comprising a ground layer formed on a bottom surface of the dielectric layer.

12. The antenna device according to claim 11 , wherein the ground layer covers the auxiliary radiator and the radiator in a planar view with the dielectric layer interposed therebetween.

13. The antenna device element of claim 1 , wherein a resonance frequency of the auxiliary radiator is greater than a resonance frequency of the radiator.

14. A display device comprising the antenna device according to claim 1 .

Assignees

• Dongwoo Fine Chem Co Ltd

Inventors

• Lee Young Jun
• Kim Jong Min
• Huh Yoon Ho

Classifications

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• 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

• H01Q1/243

  with built-in antennas · CPC title

• H01Q1/364

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

• H01Q9/0407

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title