Antenna and method of manufacturing the same, display panel

Patent metadata

Field	Value
Publication number	US-10826192-B2
Application number	US-201916422321-A
Country	US
Kind code	B2
Filing date	May 24, 2019
Priority date	May 28, 2018
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An antenna includes: a first substrate and a second substrate; a first antenna electrode is disposed on a side of the first substrate away from the second substrate; a second antenna electrode is disposed on a side of the second substrate away from the first substrate and a microstrip line is disposed on a side of the second substrate close to the first substrate; a liquid crystal layer is disposed between the first substrate and the second substrate; at least one drive electrode assembly is disposed between the first substrate and the second substrate. The at least one drive electrode assembly is configured to achieve impedance matching of the antenna by controlling liquid crystal molecules of the liquid crystal layer to deflect.

First claim

What is claimed is:

1. An antenna, comprising:
a first substrate and a second substrate that are opposite to each other;
a first antenna electrode disposed on a side of the first substrate away from the second substrate;
a second antenna electrode disposed on a side of the second substrate away from the first substrate;
a microstrip line disposed on a side of the second substrate close to the first substrate, an orthographic projection of the microstrip line on the second substrate and an orthographic projection of the first antenna electrode on the second substrate at least partially overlapping with each other;
a liquid crystal layer disposed between the first substrate and the second substrate, and an orthographic projection of the liquid crystal layer on the second substrate does not completely overlap with an orthographic projection of the microstrip line on the second substrate; and
at least one drive electrode assembly disposed between the first substrate and the second substrate, wherein
the at least one drive electrode assembly is configured to achieve impedance matching of the antenna by controlling liquid crystal molecules of the liquid crystal layer to deflect.

2. The antenna according to claim 1 , wherein an orthographic projection of the liquid crystal layer on the second substrate does not overlap with an orthographic projection of the microstrip line on the second substrate.

3. The antenna according to claim 1 , wherein each of the at least one drive electrode assembly includes a first drive electrode and a second drive electrode.

4. The antenna according to claim 3 , wherein the antenna comprises two drive electrode assemblies; an orthographic projection of one of the two drive electrode assemblies on the first substrate is located on a side of an orthographic projection of the microstrip line on the first substrate, and an orthographic projection of another of the two drive electrode assemblies is located on an opposite side of the orthographic projection of the microstrip line on the first substrate.

5. The antenna according to claim 4 , wherein the first drive electrode and the second drive electrode of each of the two drive electrode assemblies are both located on one of opposite surfaces of the first substrate and the second substrate.

6. The antenna according to claim 4 , wherein the first drive electrode and the second drive electrode of each of the two drive electrode assemblies are respectively located on the first substrate and the second substrate, and are disposed opposite to each other.

7. The antenna according to claim 4 , wherein each of the two drive electrode assemblies further includes a third drive electrode and a fourth drive electrode;
the first drive electrode and the second drive electrode of each drive electrode assembly are both located on one of the first substrate and the second substrate; the third drive electrode and the fourth drive electrode of each drive electrode assembly are both located on an other of the first substrate and the second substrate;
the first drive electrode and the third drive electrode of each drive electrode assembly are disposed opposite to each other, and the second drive electrode and the fourth drive electrode of each drive electrode assembly are disposed opposite to each other.

8. The antenna according to claim 7 , wherein the first drive electrode, the second drive electrode, the third drive electrode and the fourth drive electrode are all strip electrodes.

9. The antenna according to claim 7 , wherein the first drive electrode, the second drive electrode, the third drive electrode and the fourth drive electrode are all indium tin oxide thin film electrodes, and a thickness of the indium tin oxide film electrodes is less than 0.1 μm.

10. The antenna according to claim 1 , wherein the liquid crystal layer includes positive liquid crystals.

11. The antenna according to claim 5 , wherein initial alignments of the liquid crystal molecules in the liquid crystal layer include vertical alignment.

12. The antenna according to claim 6 , wherein initial alignments of the liquid crystal molecules in the liquid crystal layer include horizontal alignment, and an initial alignment direction of liquid crystal molecules on one side of a region between the first substrate and the second substrate that is opposite to the microstrip line is opposite to an initial alignment direction of liquid crystal molecules on another side of the same region.

13. The antenna according to claim 7 , wherein initial alignments of the liquid crystal molecules in the liquid crystal layer include vertical alignment.

14. The antenna according to claim 1 , wherein the at least one drive electrode assembly is configured to adjust a characteristic impedance of the microstrip line to achieve impedance matching to an input impedance of a feeder line of the antenna by controlling liquid crystal molecules of the liquid crystal layer to deflect.

15. A display panel provided with the antenna according to claim 1 .

16. A method of manufacturing an antenna, comprising:
forming a first antenna electrode on a side of a first substrate;
forming a microstrip line on a side of a second substrate and a second antenna electrode on an opposite side of the second substrate, an orthographic projection of the first antenna electrode on the second substrate and an orthographic projection of the microstrip line on the second substrate at least partially overlapping with each other;
forming at least one drive electrode assembly between the first substrate and the second substrate;
forming a liquid crystal layer on an opposite side of the first substrate on which the first antenna electrode is not formed, or on a side of the second substrate provided with the microstrip line; and
celling the first substrate and the second substrate face to face; wherein
the at least one drive electrode assembly is configured to achieve impedance matching of the antenna by controlling liquid crystal molecules of the liquid crystal layer to deflect.

17. The method of manufacturing an antenna according to claim 16 , wherein the at least one drive electrode assembly is configured to adjust an characteristic impedance of the microstrip line to achieve impedance matching to an input impedance of a feeder line of the antenna by controlling liquid crystal molecules of the liquid crystal layer to deflect.

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Ting Tienlun
• Kong Xiangzhong
• Wang Lei
• Wen Ken
• Qin Guangkui

Classifications

• H01Q5/335

  at the feed, e.g. for impedance matching · CPC title

• G02F1/1343

  Electrodes {(reflective electrodes G02F1/133553)} · 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

• H01Q1/2283

  mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package · CPC title

• G02F1/1313 Primary

  specially adapted for a particular application · CPC title