Liquid Crystal Antenna Plating Structure for Low-Cost Beam Steering
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Solution Overview
Problem
The high production cost and power consumption of phased array antennas make them unaffordable for consumer markets, hindering the popularization of consumer products in the field of wireless communication.
Innovation Solution
A low-cost liquid crystal antenna is developed, featuring a structure with oppositely arranged substrates, a liquid crystal layer, and metal film layers composed of chemically deposited and electroplated layers on seed layers, which are plated on glass substrates using a chemical deposition method to achieve thick, efficient, and adherent metal film layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phased array antenna is used, then communication performance is improved, but production cost and power consumption increase
Solution Approach 1:
The patent changes the material parameters by using liquid crystal materials with adjustable dielectric constants instead of traditional phased array components. By controlling the dielectric constant of the liquid crystal layer through voltage application, the antenna achieves beam steering capability without requiring complex phased array structures, thereby reducing production cost while maintaining communication performance
Solution Approach 2:
The patent replaces the mechanical/phased array system with a liquid crystal-based electromagnetic control system. Instead of using multiple antenna elements with complex feeding networks, the invention uses a single antenna structure where the liquid crystal layer's dielectric properties are electronically controlled to achieve beam direction adjustment, simplifying the overall system and reducing manufacturing complexity
2Strength
If vacuum magnetron sputtering is used to deposit metal film, then metal film adhesion is improved, but thermal deformation occurs and manufacturing efficiency decreases
Solution Approach 1:
The patent replaces the vacuum magnetron sputtering process with a chemical deposition process. Instead of using physical sputtering that requires vacuum equipment and generates thermal effects, the invention uses chemical reactions to deposit metal films at lower temperatures, eliminating thermal deformation and enabling faster, more efficient manufacturing while maintaining good adhesion through proper surface preparation and chemical bonding mechanisms
Solution Approach 2:
The patent changes the deposition process parameters by transitioning from high-energy physical sputtering to low-energy chemical deposition. This parameter change allows metal films to be deposited at lower temperatures without vacuum requirements, preventing thermal deformation of substrates and enabling higher manufacturing throughput while achieving sufficient adhesion through chemical bonding
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 solution enables the production of a low-cost, high-performance liquid crystal antenna suitable for large-scale manufacturing, avoiding the inefficiencies and thermal deformations associated with vacuum magnetron sputtering processes while ensuring strong adhesion and efficient signal transmission.
Implementation Method 1
The first metal film layer and the second metal film layer are each composed of a chemically deposited layer and an electroplated metal layer which are sequentially laminated on the seed layer of the corresponding substrate
Implementation Method 2
The first metal film layer and the second metal film layer are each composed of a chemically deposited layer and an electroplated metal layer
Implementation Method 3
a liquid crystal layer positioned between the first substrate and the second substrate
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The disclosure discloses a liquid crystal antenna, including a first substrate and a second substrate which are oppositely arranged and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a first metal film layer is arranged on one side, facing the second substrate, of the first substrate, a second metal film layer is arranged on one side, facing the first substrate, of the second substrate, the first substrate and the second substrate are rigid substrates, a seed layer is arranged between the first substrate and the first metal film layer, and a seed layer is arranged between the second substrate and the second metal film layer. The disclosure also provides a method for manufacturing a liquid crystal antenna, the seed layers are firstly manufactured on the surfaces of the substrates, and then the corresponding metal film layers are formed on the seed layers through plating, so that the thicknesses of the metal film layers can reach the µm grade, and the performance of the liquid crystal antenna is ensured. The problems of repeated plating, low efficiency, serious thermal deformation and the like in the vacuum magnetron sputtering process are avoided, the adhesion between the metal film layers and the substrates is strong, and the liquid crystal antenna which can be manufactured on a large scale at low cost is provided.