Liquid crystal antenna substrate and manufacturing method thereof, and liquid crystal antenna and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11768393-B2
Application number	US-201916755644-A
Country	US
Kind code	B2
Filing date	Oct 16, 2019
Priority date	Nov 8, 2018
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A liquid crystal antenna substrate and a manufacturing method thereof, and a liquid crystal antenna and a manufacturing method thereof are provided. The manufacturing method of the liquid crystal antenna substrate includes: forming a conductive pattern on a base substrate; coating a liquid photo-curable material at a side of the conductive pattern away from the base substrate; and using the conductive pattern as a mask to perform an exposure process from a side of the base substrate away from the conductive pattern, a portion of the liquid photo-curable material corresponding to the conductive pattern is cured to form spacers.

First claim

What is claimed is:

1. A manufacturing method of a liquid crystal antenna substrate, comprising:
forming a conductive pattern on a base substrate;
coating a liquid photo-curable material at a side of the conductive pattern away from the base substrate;
providing a liquid crystal material at a position corresponding to the conductive pattern; and
performing an exposure process on the liquid photo-curable material from a side of the base substrate away from the conductive pattern by using the conductive pattern as a mask,
wherein a portion of the liquid photo-curable material not corresponding to the conductive pattern is cured to form spacers;
the manufacturing method further comprises: removing all of a portion of the liquid photo-curable material that is uncured after performing the exposure process from the side of the base substrate away from the conductive pattern by using the conductive pattern as a mask;
wherein the forming the conductive pattern on the base substrate comprises forming bent conductive lines on the base substrate, and an orthographic projection of the bent conductive lines on the base substrate is not overlapped with the orthographic projection of the spacers on the base substrate, and the orthographic projection of the bent conductive lines on the base substrate abuts against the orthographic projection of the spacers on the base substrate to occupy a complete area.

2. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , wherein removing the portion of the liquid photo-curable material that is uncured comprises:
using a solvent to dissolve and remove the portion of the liquid photo-curable material that is uncured.

3. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , wherein the liquid photo-curable material comprises an epoxy resin, a diluent, and a photoinitiator.

4. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , wherein a material of the conductive pattern is an opaque material.

5. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , wherein the spacers are configured to be in contact with an opposing substrate to maintain a gap between the liquid crystal antenna and the opposite substrate, a size of the spacers in a direction perpendicular to the base substrate is greater than 50 microns.

6. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , further comprising:
forming an alignment film at the side of the conductive pattern away from the base substrate before coating the liquid photo-curable material at the side of the conductive pattern away from the base substrate.

7. A manufacturing method of a liquid crystal antenna, comprising:
manufacturing a liquid crystal antenna substrate by using the manufacturing method of the liquid crystal antenna substrate according to claim 1 ;
providing a liquid crystal molecular material between adjacent ones of the spacers; and
providing an opposing substrate at a side of the spacers away from the base substrate,
wherein the opposing substrate includes a substrate, a common electrode located at a side of the substrate close to the liquid crystal antenna substrate and a radiation patch located at a side of the substrate away from the liquid crystal antenna substrate, and the common electrode has an opening in an overlapping region of the radiation patch and the conductive pattern.

8. The manufacturing method of the liquid crystal antenna substrate according to claim 1 , wherein the spacers are configured to be in contact with an opposing substrate to maintain a gap between the liquid crystal antenna and the opposite substrate, a size of the spacers in a direction perpendicular to the base substrate is greater than 50 microns.

9. A liquid crystal antenna substrate, comprising:
a base substrate;
a conductive pattern located on the base substrate;
a liquid crystal material provided at a position corresponding to the conductive pattern; and
spacers located at a side of the conductive pattern away from the base substrate,
wherein a shape of an orthographic projection of the conductive pattern on the base substrate is complementary to a shape of an orthographic projection of the spacers on the base substrate; and
the conductive pattern on the base substrate comprises bent conductive lines, and an orthographic projection of the bent conductive lines on the base substrate is not overlapped with the orthographic projection of the spacers on the base substrate, and the orthographic projection of the bent conductive lines on the base substrate abuts against the orthographic projection of the spacers on the base substrate to occupy a complete area.

10. The liquid crystal antenna substrate according to claim 9 , wherein a material of the conductive pattern is an opaque material.

11. The liquid crystal antenna substrate according to claim 9 , wherein the spacers are configured to be in contact with an opposing substrate to maintain a gap between the liquid crystal antenna and the opposite substrate, a size of the spacers in a direction perpendicular to the base substrate is greater than 50 microns.

12. The liquid crystal antenna substrate according to claim 9 , further comprising: an alignment film between the conductive pattern and the spacers.

13. A liquid crystal antenna, comprising:
the liquid crystal antenna substrate according to claim 9 ;
an opposing substrate located at a side of the spacers away from the base substrate; and
a liquid crystal layer located between the base substrate and the opposing substrate and located between adjacent ones of the spacers,
wherein the opposing substrate includes a substrate, a common electrode located at a side of the substrate close to the liquid crystal antenna substrate, and a radiation patch located at a side of the substrate away from the liquid crystal antenna substrate, and the common electrode has an opening in an overlapping region of the radiation patch and the conductive pattern.

Assignees

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

Inventors

• Bi Yao
• Yuan Hongliang
• Ma Li
• Wu Xiaojuan
• Chen Huishun
• Zheng Qi
• Zhao Zhiqiang
• Cheng Zhangxiang
• Wang Jiaxing
• Zhong Xuan

Classifications

• G02F1/1313 Primary

  specially adapted for a particular application · CPC title

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• H01Q1/364

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

• H01Q3/34

  by electrical means (active lenses or reflecting arrays H01Q3/46) · CPC title

• H01Q1/12 Primary

  Supports; Mounting means · CPC title