Interactive Textile Capacitive Sensors for Hard Object Integration
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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 capacitive touch sensors, allowing for the detection of touch-input and generation of touch data to control remote devices, which can be integrated into both flexible and hard objects through methods like injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional touch pads are used, then touch sensing function is achieved, but the device becomes non-flexible and costly to produce and integrate
Solution Approach 1:
The patent uses a simplified capacitive sensing mechanism that replicates the essential function of conventional touch pads without requiring complex rigid structures. The conductive thread grid creates a capacitive field that detects touch through changes in capacitance, copying the core functionality of expensive touch pads using inexpensive textile materials.
Solution Approach 2:
The patent replaces rigid touch pad structures with flexible textile substrates containing woven conductive threads. This allows the touch sensor to be integrated into flexible objects like clothing, bags, and soft surfaces, achieving adaptability while maintaining manufacturability through standard textile production methods.
2Reliability
If conventional touch sensors are produced, then touch detection capability is achieved, but the production process becomes complicated and expensive
Solution Approach 1:
The patent extracts the essential capacitive sensing function from complex conventional touch sensor assemblies and implements it using simple conductive threads woven into textile. This removes unnecessary complexity while preserving reliable touch detection through the fundamental capacitive effect.
Solution Approach 2:
The patent changes the physical state and arrangement of conductive materials from rigid deposited layers to flexible woven threads. This parameter change enables the same capacitive sensing function to be achieved with simpler, more adaptable materials that are easier to manufacture and integrate into various objects.
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 affordable and flexible touch sensors that can be easily integrated into various objects, allowing users to control devices with 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
AI summary
This document describes interactive textiles within hard objects. 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.