Color-changing fabric having printed pattern
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Solution Overview
Problem
Current fabric products with appearance and color-changing capabilities are passively controlled by environmental stimuli, lacking the ability for active and dynamic color adjustment.
Innovation Solution
A fabric system featuring fibers with an electrically conductive core and a thermochromic coating, where an electrical current can be applied to change the color of the fabric, allowing for on-demand color transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive thermochromic dyes are used for color-changing fabric, then the fabric can change color in response to environmental stimuli, but the fabric lacks active and dynamic color control capability
Solution Approach 1:
The patent replaces passive thermal response with active electrical control by substituting the mechanical/thermal system (heat transfer from environment) with an electrical system (conductive fibers delivering current). The conductive fibers electrically heat specific regions on-demand, enabling active control of thermochromic pigment color changes without relying on passive environmental heat transfer.
Solution Approach 2:
The patent transforms the static, passive color-changing property into a dynamic, controllable system. By integrating conductive fibers that can be selectively activated, the fabric achieves real-time, on-demand color adjustment. The system transitions from equilibrium-based passive response to a dynamically controllable state where color changes occur only when and where electrical current is applied.
2Adaptability or versatility
If conductive fibers with thermochromic coating are used, then active color control is achieved, but the fabric structure becomes more complex
Solution Approach 1:
The patent merges multiple functions into a single integrated fiber structure. The conductive fiber core and thermochromic coating are combined into one composite element, eliminating the need for separate heating elements, control systems, and color-changing materials. This integration reduces overall system complexity while maintaining advanced color control capabilities.
Solution Approach 2:
The conductive fiber serves multiple functions simultaneously: it provides structural support as a fiber, conducts electricity for heating, and acts as a thermal transfer medium to the thermochromic coating. This multi-functionality reduces the number of separate components needed, thereby simplifying the overall fabric structure despite the advanced capabilities achieved.
3Adaptability or versatility
If electrical current is applied to change color, then on-demand color transitions are achieved, but energy consumption increases
Solution Approach 1:
The patent employs periodic or pulsed electrical action rather than continuous power application. Color changes are triggered by intermittent electrical current pulses to the conductive fibers, allowing the thermochromic material to change state only when needed. This periodic activation significantly reduces energy consumption compared to continuous heating, while maintaining on-demand color control capability.
Solution Approach 2:
The patent applies electrical energy locally to specific regions of the fabric rather than heating the entire material uniformly. By directing current through specific conductive fibers at specific locations, only the targeted areas undergo color change. This localized energy application minimizes overall energy consumption while achieving the desired visual effect in specific zones.
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 dynamic and selective control over the color of the fabric, enabling adaptive camouflage and various visual effects based on environmental conditions or user input.
Implementation Method 1
The second layer includes a foreground thermochromic pigment that is selectively activatable by providing an electrical current to the electrically conductive core of the at least one fiber to change at least one of a foreground color or a pattern of the second layer
Implementation Method 2
providing an electrical current to the electrically conductive core of the at least one fiber to change at least one of a foreground color or a pattern of the second layer
Data Source
AI summary
A color-changing product includes a fabric. The fabric includes a first layer and a second layer. The first layer is arranged using at least one fiber. The at least one fiber includes (a) an electrically conductive core and (b) a coating disposed around and along the electrically conductive core. The second layer is printed onto the first layer. The second layer includes a foreground thermochromic pigment that is selectively activatable by providing an electrical current to the electrically conductive core of the at least one fiber to change at least one of a foreground color or a pattern of the second layer.