Conductive Warp Strands for Flexible Circuit Integration
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Solution Overview
Problem
Incorporating electrical components into fabric items is challenging due to the flexibility of fabric, which can damage signal paths or dislodge components when bent or stretched.
Innovation Solution
Interlacing equipment with individually adjustable components allows for the insertion and embedding of electrical components during fabric formation, using conductive warp strands and isolated electrical connections to form circuits within the fabric.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrical components are mounted on flexible fabric, then functionality is enhanced, but signal paths may be damaged or components dislodged when fabric is bent or stretched
Solution Approach 1:
The conductive path is divided into discrete conductive elements (conductive threads, conductive particles, or conductive regions) that are distributed throughout the fabric rather than forming a continuous rigid trace. This segmentation allows the signal path to flex and stretch with the fabric while maintaining electrical connectivity, preventing damage to the signal paths.
Solution Approach 2:
The fabric integrates multiple material types including conductive materials (metal threads, conductive polymers, or conductive particles) combined with insulating and structural materials. This composite construction creates a flexible fabric that can accommodate bending and stretching while maintaining both mechanical integrity and electrical signal transmission.
2Adaptability or versatility
If electrical components are integrated into fabric, then enhanced functionality is achieved, but manufacturing complexity increases
Solution Approach 1:
The electrical components and conductive pathways are integrated directly into the fabric structure during the weaving or knitting process itself, rather than being added as separate post-processing steps. Conductive threads are incorporated into the warp or weft, and components are embedded within the fabric matrix, merging the electrical system with the structural fabric to reduce manufacturing complexity.
Solution Approach 2:
Conductive elements are pre-positioned and pre-configured within the fabric during the textile manufacturing process before final assembly. Conductive threads are arranged in the warp or weft during weaving, and component mounting locations are predetermined in the fabric structure, allowing electrical integration to be completed in advance and simplifying subsequent assembly operations.
3Ease of manufacture
If conductive strands are used in fabric, then electrical connections are formed, but isolation between connections becomes difficult
Solution Approach 1:
Insulating materials such as insulating coatings, insulating fabrics, or insulating layers are introduced as intermediary elements between adjacent conductive strands or conductive regions. These insulating intermediaries prevent electrical coupling between neighboring conductive elements while allowing the conductive paths to remain integrated into the fabric structure, achieving both connection formation and isolation.
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
Enables the creation of fabric items with integrated electrical components that maintain functionality and robustness, allowing for the formation of conductive paths and secure connections within the fabric.
Implementation Method 1
The conductive warp strand may form part of a circuit and/or may be connected to an electrical component
Implementation Method 2
the outer insulating layer of the core strand may have a different melting temperature and/or may be formed from a different material than the outer insulating layer of the covering strand
Implementation Method 3
Arrangements in which different techniques are used to form the two electrical connections such as ultra-violet light curing material in the first electrical connection
Implementation Method 4
soldering material via induction in the second electrical connection
Data Source
AI summary
Interlacing equipment may be used to form fabric such as woven fabric. The woven fabric may include warp strands and weft strands. In a Leno weave, a warp strand may include one or more covering strands twisted around a core strand. The covering strands and/or the core strand may be conductive to form a conductive warp strand. An electrical component may be mounted to the conductive warp strand. A first electrical connection may couple the electrical component to the core strand and a second electrical connection may couple the electrical component to the covering strand. The two electrical connections may be isolated from one another. A warp strand may have a first region in which the core includes a conductive strand and a second region in which the conductive strand forms part of the covering or is located on an outer surface of the covering.