Antenna device and display device including the same

Patent metadata

Field	Value
Publication number	US-11710889-B2
Application number	US-202017019527-A
Country	US
Kind code	B2
Filing date	Sep 14, 2020
Priority date	Mar 14, 2018
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

An antenna device according to an embodiment of the present invention includes a dielectric layer, a radiation pattern disposed on a top surface of the dielectric layer, a signal pad electrically connected to the radiation pattern, and a ground pad spaced apart from the signal pad and having an isolation space. A length of the isolation space is greater than a length of the signal pad.

First claim

What is claimed is:

1. An antenna device, comprising:
a dielectric layer;
a radiation pattern disposed on a top surface of the dielectric layer;
a signal pad electrically connected to the radiation pattern; and
a ground pad spaced apart from the signal pad and having an isolation space, wherein a length of the isolation space is greater than a length of the signal pad,
wherein the length of the isolation space is 2 to 300 times the length of the signal pad,
wherein the ground pad comprises:
a pair of protruding bars extending in a length direction of the antenna device and facing each other in a width direction of the antenna device; and
a connection bar extending in the width direction and connecting the protruding bars.

2. The antenna device according to claim 1 , wherein the connection bar is connected to end portions of the protruding bars to define a recess, and the signal pad is disposed at an inlet of the recess.

3. The antenna device according to claim 2 , wherein the isolation space is defined by an area of the recess except for the inlet at which the signal pad is disposed.

4. The antenna device according to claim 3 , wherein a width of the isolation space is the same as a distance between the pair of protruding bars.

5. The antenna device according to claim 2 , further comprising a transmission line connecting the radiation pattern and the signal pad.

6. The antenna device according to claim 5 , wherein the signal pad is only inserted into the inlet of the recess, and the transmission line is disposed at an outside of the recess.

7. The antenna device according to claim 5 , wherein the radiation pattern, the transmission line, the signal pad and the ground pad are disposed at the same level on the top surface of the dielectric layer.

8. The antenna device according to claim 7 , further comprising a ground layer disposed on a bottom surface of the dielectric layer.

9. The antenna device according to claim 1 , wherein the radiation pattern has a mesh structure.

10. The antenna device according to claim 9 , further comprising a dummy pattern arranged around the radiation pattern and including a mesh structure having the same shape as that of the radiation pattern.

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

Assignees

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

Inventors

• Ryu Han Sub
• Oh Yun Seok
• Huh Yoon Ho
• Hong Won Bin

Classifications

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q9/0407 Primary

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

• H01Q1/38

  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