Liquid Crystal Antenna Ground Layer Layout for Easier Fabrication
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Solution Overview
Problem
The low yield and high production cost of liquid crystal antennas hinder their commercial mass production due to complex manufacturing processes and the need for customized products, restricting their development and application in fields like satellite receiving and 5G base stations.
Innovation Solution
A liquid crystal antenna design featuring a first substrate with a conductive layer and a second substrate with radiation electrodes, where an external metal layer connected to a fixed potential is used, allowing for simplified manufacturing by eliminating the need for double-sided copper plating and patterning, thus reducing process complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional liquid crystal antenna manufacturing processes are used, then the antenna function is achieved, but the manufacturing complexity and production cost increase significantly
Solution Approach 1:
The patent extracts and eliminates the complex double-sided copper plating and patterning processes from the manufacturing flow. By using a simplified single-sided structure with the external metal layer serving multiple functions, the invention removes unnecessary manufacturing steps while maintaining antenna functionality.
Solution Approach 2:
The external metal layer is designed to serve multiple functions simultaneously: as the ground layer, as the radiation element, and as the external connection layer. This multi-functionality reduces the number of separate components and simplifies the overall manufacturing process.
2Adaptability or versatility
If customized liquid crystal antenna products are manufactured, then the specific performance requirements are met, but the production cost and manufacturing difficulty increase
Solution Approach 1:
The antenna structure is segmented into modular components (first substrate, second substrate, liquid crystal layer, external metal layer) that can be independently manufactured and then assembled. This modularity allows for easier customization while maintaining efficient production through standardized manufacturing of individual modules.
3Reliability
If conventional manufacturing methods are used, then the antenna structure is formed, but the production efficiency and product yield remain low
Solution Approach 1:
The external metal layer is formed on the first substrate before assembling the liquid crystal cell. This preliminary action allows for better process control and higher yield by completing critical structure formation early in the manufacturing sequence, before the cell is sealed and harder to access.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances production efficiency, increases product yield, and reduces manufacturing difficulty, making it feasible for commercial production and broader application of liquid crystal antennas.
Implementation Method 1
The liquid crystal phaser and the ground layer form an electric field to control the deflection of liquid crystal molecules to realize the control of the liquid crystal equivalent dielectric constant, and then to realize the adjustment the phase of the electromagnetic wave.
Data Source
AI summary
A liquid crystal antenna and a method for forming a liquid crystal antenna are provided. The liquid crystal antenna includes a first substrate; a second substrate opposite to the first substrate; and a liquid crystal layer disposed between the first substrate and the second substrate. A first conductive layer is disposed on a side of the first substrate facing toward the second substrate; a second conductive layer is disposed on a side of the second substrate facing toward the first substrate; the second conductive layer at least includes a plurality of radiation electrodes; an external metal layer is disposed on a side of the first substrate facing away from the liquid crystal layer; and the external metal layer is connected to a fixed potential.