IP Library Granted Patent US 12,580,304
Granted Patent B2
US 12,580,304 · App. 17/923,757 · Granted Mar 17, 2026

Liquid crystal antenna

Inventors: Guoqiang Tang (Beijing, CN); Jia Fang (Beijing, CN); Yang Zheng (Beijing, CN); Yali Wang (Beijing, CN); Zongmin Liu (Beijing, CN); Feng Qu (Beijing, CN); Biqi Li (Beijing, CN)
Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
H01Q1/364H01P1/10
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Quick Facts
Patent No.
US 12,580,304
App. No.
17/923,757
Granted
Mar 17, 2026
Kind
B2
Abstract

Provided is a liquid crystal antenna, which includes a first substrate and a second substrate which are oppositely arranged; a liquid crystal layer located between the first substrate and the second substrate; a first electrode located on one side of the first substrate close to the liquid crystal layer; a second electrode located on one side of the second substrate close to the liquid crystal layer; a feeder line located on one side of the second substrate far away from the second electrode and electrically connected with the second electrode; an encapsulation layer located between the first substrate and the second substrate and surrounding the liquid crystal layer; and a side electrode assembly including a plurality of side electrodes.

Claims (21)

1 . A liquid crystal antenna, comprising:

a first substrate and a second substrate which are oppositely arranged;

a liquid crystal layer located between the first substrate and the second substrate;

a first electrode located on one side of the first substrate adjacent to the liquid crystal layer;

a second electrode located on one side of the second substrate adjacent to the liquid crystal layer;

a feeder line located on one side of the second substrate distal to the second electrode and electrically connected with the second electrode;

an encapsulation layer located between the first substrate and the second substrate and surrounding the liquid crystal layer; and

a side electrode assembly comprising a plurality of side electrodes,

wherein a direction of an electric field formed by the side electrodes in the side electrode assembly intersects with a direction of an electric field formed by the first electrode and the second electrode,

wherein the side electrode assembly comprises a first side electrode, a second side electrode, a third side electrode and a fourth side electrode, and

the first side electrode and the second side electrode are both located on the first electrode and both insulated from the first electrode; and the third side electrode and the fourth side electrode are both located on one side of the encapsulation layer distal to the first substrate.

2 . The liquid crystal antenna according to claim 1 , wherein the side electrode assembly comprises a first side electrode and a second side electrode; and

the first side electrode and the second side electrode are oppositely arranged and are both located on one side of the encapsulation layer distal to the liquid crystal layer.

3 . The liquid crystal antenna according to claim 2 , wherein the encapsulation layer comprises two first encapsulation parts which are oppositely arranged and two second encapsulation parts which are oppositely arranged, and the first encapsulation parts are connected with the second encapsulation parts; and

the first encapsulation part is made of a conducting material, the second encapsulation part is made of an insulating material, the first side electrode is in direct contact with one first encapsulation part, and the second side electrode is in direct contact with the other first encapsulation part.

4 . The liquid crystal antenna according to claim 1 , wherein the third side electrode and the fourth side electrode are both located on one side of the second substrate distal to the feeder line;

or, the third side electrode and the fourth side electrode are both located on one side of the second electrode distal to the second substrate and insulated from the second electrode.

5 . The liquid crystal antenna according to claim 1 , wherein an orthographic projection of the first side electrode on the first substrate overlaps with an orthographic projection of the third side electrode on the first substrate, and an orthographic projection of the second side electrode on the first substrate overlaps with an orthographic projection of the fourth side electrode on the first substrate.

6 . The liquid crystal antenna according to claim 5 , wherein the encapsulation layer comprises two first encapsulation parts which are oppositely arranged and two second encapsulation parts which are oppositely arranged, and the first encapsulation parts are connected with the second encapsulation parts; and the first encapsulation part is made of a conducting material, and the second encapsulation part is made of an insulating material; and

the first side electrode and the third side electrode are in direct contact with one first encapsulation part, and the second side electrode and the fourth side electrode are in direct contact with the other first encapsulation part.

7 . The liquid crystal antenna according to claim 6 , wherein the side electrode assembly further comprises a fifth side electrode and a sixth side electrode, the fifth side electrode and the sixth side electrode are oppositely arranged, and the fifth side electrode is located on one side of one first encapsulation part distal to the liquid crystal layer, and the sixth side electrode is located on one side of the other first encapsulation part distal to the liquid crystal layer.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME AND ADDRESS PREVIOUSLY RECORDED ON REEL 72881 FRAME 828. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 9, 2025
From: BOE TECHNOLOGY GROUP., LTD.
To: BEIJING BOE TECHNOLOGY DEVELOPEMENT CO., LTD.
Reel/Frame 073916/0761 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2025
From: BOE TECHNOLOGY GROUP CO., LTD.
To: BEIJING BOETECHNOLOGY DEVELOPMENT CO., LTD .
Reel/Frame 072881/0828 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2022
From: TANG, GUOQIANG; FANG, JIA; ZHENG, YANG; WANG, YALI; LIU, ZONGMIN; QU, FENG; LI, BIQI
To: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.; BOE TECHNOLOGY GROUP CO., LTD.
Reel/Frame 061676/0737 →
Continuity (1)
Related Publication 20240222856A1 · Jul 4, 2024
References Cited (5)
US 20180217456A1 · Vilenskiy · 2018 [cited by examiner]
US 20230006340A1 · Yang · 2023 [cited by examiner]
CN 105706304A · 2016 [cited by applicant]
CN 107528121A · 2017 [cited by applicant]
Office Action dated Sep. 28, 2025, issued in counterpart Chinese patent application No. 202180004155.0 with English translation (17 pages). [cited by applicant]