Stretchable Electrode Dual-Layer Substrate Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible electronic devices face challenges with poor stretching performance and low electrical stability due to the limitations in manufacturing processes, particularly when integrating non-deformable functional devices that require stretching without damaging electronic units.
Innovation Solution
A stretchable electrode is designed with a substrate comprising two elastic layers of differing elastic moduli, where the second elastic layer has a higher modulus than the first, and an electric conductive area with a curved shape to enhance stretching capabilities while protecting electronic devices. This configuration ensures that electronic units are not easily damaged during deformation, maintaining high electrical stability and allowing for over 20% stretching with minimal impedance variation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible electronic device is designed to be stretchable, then the stretching performance is improved, but the electrical stability deteriorates due to deformation of conductive paths and damage to electronic units
Solution Approach 1:
The substrate is divided into two functional layers: a first elastic layer for providing stretchability and a second elastic layer with higher modulus for protecting electronic components. This segmentation allows each layer to perform its specialized function, resolving the contradiction between stretchability and electrical stability.
Solution Approach 2:
Different regions of the substrate are given different elastic moduli - the first elastic layer has lower modulus for stretching, while the second elastic layer has higher modulus for maintaining structural integrity during stretching. This local differentiation enables simultaneous achievement of stretchability and electrical stability.
2Stability of the object's composition
If the elastic modulus of the substrate is increased to maintain structural integrity, then the electrical stability is improved, but the stretching performance deteriorates
Solution Approach 1:
The substrate is segmented into two layers with different elastic moduli, allowing the lower-modulus first layer to provide stretching performance while the higher-modulus second layer maintains structural integrity. This resolves the contradiction by distributing different mechanical properties to different layers.
Solution Approach 2:
The substrate uses a composite structure of two elastic layers with different elastic moduli. This composite design enables the overall substrate to exhibit both high stretchability (from the first layer) and high structural integrity (from the second layer), resolving the contradiction between these two properties.
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
The solution provides a stretchable electrode with improved stretching performance and high electrical stability, ensuring that electronic devices can be stretched without damage and maintaining low impedance variation, thus addressing the limitations of existing flexible electronic devices.
Implementation Method 1
a substrate, having a first elastic layer, and a second elastic layer positioned on the first elastic layer and having an elastic modulus greater than that of the first elastic layer
Data Source
AI summary
The present application discloses a stretchable electrode, an electronic device and a manufacturing method thereof. The stretchable electrode includes a substrate, an electric conductive area and an electronic device integration area; the substrate has a first elastic layer and a second elastic layer with different elastic moduli. The electronic device produced by using the afore-mentioned stretchable electrode can be stretched entirely, and when it is stretched, the electronic device would not be damaged and the variation of its impedance is small. Tests have shown that the electric conductive layer can be stretched by more than 20%, with the variation ratio of its impedance being less than 1.5%, and no damage is caused to the electronic device.