Woven Conductive Thread Textile for Flexible Capacitive Touch Sensing
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Solution Overview
Problem
Producing touch sensors that are light, flexible, and adaptive to various uses is complicated and expensive, as conventional touch sensors are non-flexible and costly to integrate into objects.
Innovation Solution
Interactive textiles with a grid of conductive thread woven into them to form a capacitive touch sensor, allowing for the detection of touch-input and generation of touch data to control remote devices, which can be easily integrated into flexible or hard objects through methods like injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional touch sensors are used, then touch detection function is achieved, but the sensor becomes non-flexible and expensive to integrate
Solution Approach 1:
The patent replaces rigid touch sensor components with flexible conductive threads woven into textile fabric. The conductive threads form capacitive touch sensor elements that maintain flexibility while enabling touch detection functionality. This allows the touch sensor to be integrated into flexible objects like clothing, bags, and soft surfaces without compromising either flexibility or manufacturing ease.
Solution Approach 2:
The invention combines conductive threads with textile fabric to create a composite material that integrates sensing functionality with mechanical flexibility. The woven structure of conductive threads within the fabric creates a capacitive touch sensor that inherits the flexibility of the textile while adding electronic sensing capabilities, resolving the contradiction between functionality and adaptability.
2Adaptability or versatility
If conventional touch pads are used, then touch input detection is achieved, but the device becomes heavy and rigid
Solution Approach 1:
The patent uses thin, flexible conductive threads woven into textile fabric instead of rigid touch pad layers. This textile-based capacitive touch sensor maintains the flexibility and lightness of fabric while enabling touch detection, eliminating the weight and rigidity issues of conventional touch pads.
3Ease of manufacture
If textile-based capacitive touch sensor is used, then flexibility and ease of integration are improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the structural support function of textile fabric with the sensing function of conductive threads into a single integrated component. The conductive threads are woven directly into the fabric during manufacturing, combining what would traditionally be separate structural and sensing elements into one unified textile-based touch sensor, thereby simplifying overall device complexity.
Solution Approach 2:
The textile-based capacitive touch sensor can be integrated into multiple types of objects (clothing, bags, hard surfaces via molding) using the same fundamental structure. The universal woven conductive thread design provides multi-functionality across different application contexts without requiring complex customization, easing manufacturing across diverse products.
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 flexible and cost-effective integration of touch sensors into various objects, allowing users to control devices such as smartphones, televisions, and home appliances through intuitive gestures, enhancing usability and reducing production costs.
Implementation Method 1
a grid of conductive thread woven into the interactive textile to form a capacitive touch sensor that is configured to detect touch-input
Data Source
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AI summary
This document describes interactive textiles. An interactive textile includes a grid of conductive thread woven into the interactive textile to form a capacitive touch sensor that is configured to detect touch-input. The interactive textile can process the touch- input to generate touch data that is useable to control various remote devices. For example, the interactive textiles may aid users in controlling volume on a stereo, pausing a movie playing on a television, or selecting a webpage on a desktop computer. Due to the flexibility of textiles, the interactive textile may be easily integrated within flexible objects, such as clothing, handbags, fabric casings, hats, and so forth. In one or more implementations, the interactive textiles may be integrated within various hard objects, such as by injection molding the interactive textile into a plastic cup, a hard casing of a smart phone, and so forth.