Extensible Electroconductive Wiring With Vent Holes
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Solution Overview
Problem
Existing flexible electronic devices face challenges with electroconductive materials that lose elasticity and conductivity when stretched, leading to increased resistance and mechanical stress, making them unsuitable for repeated extension and contraction without permanent deformation.
Innovation Solution
An extensible electroconductive wiring material with vent peripheral edge portions and insulating elastic bodies that include penetration slits and holes, allowing for three-dimensional deformation without exposing the conductive layer, maintaining conductivity and elasticity through the use of silicone resin or rubber for insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electroconductive rubber layer is stretched to achieve flexibility and extensibility, then the device can follow body movement, but the cross-sectional area decreases and resistance value increases
Solution Approach 1:
The electroconductive material is divided into multiple segments by forming vent holes and vent slits that create isolated conductive islands. These segments are connected through elastic bodies that can deform independently, allowing the overall structure to extend without significantly changing the resistance of individual conductive paths.
Solution Approach 2:
The patent transitions from a two-dimensional flat conductive layer to a three-dimensional structure with vent holes and slits that can deform in multiple directions. The insulating elastic bodies provide vertical deformation capacity, enabling the conductive material to accommodate stretching without planar thinning that would increase resistance.
2Adaptability or versatility
If the electroconductive material is extended repeatedly, then flexibility is achieved, but cracks are generated inside the material or on interfacial surfaces, increasing resistance
Solution Approach 1:
The patent pre-forms vent holes and vent slits in the electroconductive material before use, creating built-in stress relief zones that prevent crack propagation during repeated extension. The insulating elastic bodies are selected with appropriate hardness (50-90 durometer) to cushion mechanical stresses before they reach the conductive layer, preventing interfacial delamination and cracking.
Solution Approach 2:
The electroconductive material incorporates a porous structure with vent holes and slits that allow controlled deformation and stress distribution. This porous architecture prevents stress concentration that would otherwise lead to crack formation during repeated stretching and contraction cycles.
3Adaptability or versatility
If insulating film substance with slits is used to achieve extensibility, then three-dimensional deformation is possible, but the elasticity cannot be expected so much and considerable force is needed to keep extending
Solution Approach 1:
The patent optimizes the physical parameters of the insulating elastic bodies, specifically selecting durometer values between 50-90 and controlling thickness (0.1-5.0 mm) to achieve the right balance of softness and structural support. This parameter optimization allows the material to deform easily without requiring excessive force, while still maintaining sufficient elasticity for repeated use.
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 material exhibits excellent durability and resistance stability during repeated stretching and contraction, minimizing stress and maintaining low resistance values, making it suitable for flexible devices like wearable technology.
Implementation Method 1
insulating elastic bodies which have penetration slits and/or penetration holes that penetrate therethrough while matching the vent peripheral edge portions and are smaller than the vent holes and the vent slits
Data Source
AI summary
An extensible electroconductive wiring material includes a flexible electroconductive material and insulating elastic bodies and, wherein the flexible electroconductive material having an electroconductive layer has vent peripheral edge portions in which vent holes and/or vent slits are penetrated and aligned in series and/or in parallel along an energization direction of the electroconductive layer while the vent peripheral edge portions are energizably linked, and the vent peripheral edge portions is sealed and covered by the insulating elastic bodies, so as not to be exposed; and the insulating elastic bodies, have penetration slits, and/or penetration holes which penetrate therethrough while matching the vent peripheral edge portions and are smaller than the vent holes and the vent slits. The extensible electroconductive wiring module has a plurality of these extensible electroconductive wiring materials.