Variable-Thickness Insulating Layer for Stable Antenna Capacitance
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Solution Overview
Problem
Existing antenna devices face challenges in maintaining capacitance modulation stability and operational reliability, with current designs not adequately addressing these issues.
Innovation Solution
The electronic device incorporates a substrate with a conductive layer and an insulating layer of varying thickness, where the insulating layer has a smaller thickness in the capacitance adjustable region to maintain stability and a greater thickness elsewhere to reduce corrosion and metal ion diffusion, enhancing the device's reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the insulating layer has uniform thickness throughout the device, then manufacturing is simple, but capacitance modulation stability deteriorates
Solution Approach 1:
The insulating layer is designed with non-uniform thickness, having a first thickness in the first region and a second thickness in the second region. This local variation in thickness allows different regions to serve different functions: one region optimizes for capacitance modulation stability while another region provides enhanced protection against corrosion and metal ion diffusion, thereby resolving the contradiction between manufacturing simplicity and reliability.
2Volume of moving object
If the insulating layer thickness is reduced, then device miniaturization is achieved, but protection against metal ion diffusion deteriorates
Solution Approach 1:
The insulating layer is designed with region-specific thicknesses where certain regions have sufficient thickness to provide robust protection against metal ion diffusion, while other regions have reduced thickness to enable device miniaturization. This localized differentiation allows the device to achieve compact dimensions overall while maintaining adequate protection in critical areas.
Data Source
AI summary
An electronic device is provided. The electronic device includes a substrate, a conductive layer, an insulating layer, and a modulating material. The conductive layer is disposed on the substrate and has a first opening penetrating through the conductive layer. The insulating layer is disposed on the conductive layer and includes a second opening penetrating through the insulating layer. The first opening of the conductive layer and the second opening of the insulating layer are at least partially overlapped. The modulating material is disposed on the insulating layer.