Electrophoretic Color-Changing Fiber for Multi-Axial Flexibility
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Solution Overview
Problem
Current flat display technologies are limited in their flexibility, unable to achieve multi-axial bending and are thus not suitable for wearable applications.
Innovation Solution
A color changeable fiber comprising a core wire, display layer, transparent conductive layer, and protective layer, with electrophoretic particles in microcapsules, allowing for voltage-controlled color changes and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flat display technology is used, then display function is achieved, but flexibility is limited to sheet-like uniaxial bending
Solution Approach 1:
The display device is segmented into multiple independent color changeable fibers, each capable of independent color control and bending. This segmentation allows the overall structure to achieve multi-axial flexibility while maintaining display functionality through the collective arrangement of individual fibers.
Solution Approach 2:
Each color changeable fiber is constructed with flexible layers including a display layer with microcapsules, transparent conductive layers, and protective layers. These thin film structures enable the fibers to bend in multiple directions while maintaining structural integrity and electrical connectivity for color control.
2Adaptability or versatility
If multiple layers are added to achieve color changes, then color versatility is improved, but structural complexity increases
Solution Approach 1:
The transparent conductive layers serve multiple functions: they act as electrodes for controlling electrophoretic particle movement to achieve color changes, provide structural support for the thin film layers, and maintain flexibility of the overall fiber structure. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The fiber structure combines multiple materials with different properties: electrophoretic particles for color display, transparent conductive materials for electrical control and structural support, and flexible polymer layers for mechanical durability. This composite structure achieves color versatility while managing overall complexity through material integration.
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 fiber achieves versatile color changes and adaptive deformations, enabling applications in various fields including wearables and flexible display devices.
Implementation Method 1
The display layer includes multiple microcapsules, and the multiple microcapsules individually include multiple electrophoretic particles
Data Source
AI summary
Provided are a color changeable fiber, a color changeable device, and a manufacturing method thereof. The color changeable fiber includes a core wire, a display layer, a transparent conductive layer, and a protective layer. The display layer is disposed on a surface of the core wire and is in direct contact with the core wire or in contact with the core wire through an adhesion promoter. The display layer includes multiple microcapsules. The multiple microcapsules individually include multiple electrophoretic particles. The transparent conductive layer is disposed over a surface of the display layer. The protective layer is disposed over a surface of the transparent layer.