Stretchable Sensor Electrode Spacing for Curved Surface Wiring
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Solution Overview
Problem
Manufacturing wirings on curved surfaces of three-dimensional electronic products is challenging due to the complexity of their non-circular or non-spherical shapes and varying curvature, which limits their design flexibility and applicability.
Innovation Solution
A stretchable sensing device comprising a first unit structure with slits and sensing electrodes, a second unit structure, and a stretchable material layer that allows for adjustable spacing between electrodes, enabling the device to conform to different shapes and deform under external forces while maintaining sensing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rigid substrate is used for wiring, then manufacturing precision is improved, but adaptability to curved surfaces deteriorates
Solution Approach 1:
The patent employs flexible substrates including thin film structures that can conform to curved and three-dimensional surfaces while maintaining wiring functionality. The flexible substrate replaces rigid substrates, enabling the sensing device to adapt to various surface geometries without compromising manufacturing precision through established thin-film fabrication techniques
Solution Approach 2:
The patent introduces stretchable material layers and deformable substrate structures that dynamically adjust to surface curvatures. The substrate and associated layers are designed to be mechanically compliant, allowing the device to stretch, bend, and conform to different shapes while maintaining electrical connectivity and sensing functionality
2Adaptability or versatility
If the sensing device structure is made complex to fit various shapes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The sensing device is divided into modular unit structures, each comprising substrate portions, sensing electrode layers, and stretchable material layers. These standardized modules can be independently fabricated and then assembled or connected to form complex three-dimensional configurations, reducing overall device complexity while maintaining shape adaptability
Solution Approach 2:
The patent designs universal unit structures with standardized interfaces and configurations that can be repeatedly used to create various sensing device geometries. The same basic module design can adapt to different surface shapes through arrangement variations rather than requiring unique complex designs for each application
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 device can effectively sense deformations and adapt to various shapes, enhancing its applicability and usability in diverse environments by maintaining sensing capabilities even under external forces, without damaging the substrate or structures.
Implementation Method 1
The stretchable material layer is located between the first unit structure and the second unit structure to provide a changeable spacing between at least two of the first sensing electrodes located on adjacent first distribution regions
Data Source
AI summary
A stretchable sensing device includes at least one first unit structure, at least one second unit structure and a stretchable material layer. The first unit structure includes a first substrate and a first sensing element layer, wherein the first substrate includes multiple first slits and multiple first distribution regions defined by the first slits. The first sensing element layer includes multiple first sensing electrodes being electrically isolated to each other and located on the first substrate. The second unit structure is located on the first unit structure and includes a second substrate and a second sensing element layer located on the second substrate. The stretchable material layer is located between the first unit structure and the second unit structure, and provides a changeable spacing between at least two of the first sensing electrodes located on adjacent first distribution regions. A sensing method of the stretchable sensing device is also provided.