Light-Emitting Electrochromic Device with Multifunctional Color-Switching
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Solution Overview
Problem
Current electrochromic devices lack multifunctional color-switching properties, which limits their applications in display, information storage, and other fields.
Innovation Solution
A light-emitting electrochromic device with a transparent electrode, electrochromic layer, electrolyte layer, and ion storage layer, incorporating electrochromic materials that switch between colored and bleached states, and light-emissive materials that emit fluorescent or phosphorescent colors, enabling multiple light switching mechanisms for noticeable color changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrochromic devices use traditional single-function design, then device complexity is low, but color-switching functionality is limited
Solution Approach 1:
The patent combines electrochromic materials with light-emissive materials in a single device structure, merging coloration/bleaching functionality with light emission capabilities. This integration enables multiple color-switching mechanisms (electrochromic switching, fluorescent emission, phosphorescent emission) within one device, thereby enhancing versatility without proportionally increasing complexity
Solution Approach 2:
The device is designed to perform multiple functions: electrochromic color switching, fluorescent light emission, phosphorescent light emission, and color mixing. By incorporating materials that exhibit different optical responses to electrical stimuli and light excitation, the device achieves multi-functionality that expands its application scope in displays, information storage, and security features
2Adaptability or versatility
If electrochromic devices incorporate multiple light-emissive materials, then color-switching versatility improves, but manufacturing complexity increases
Solution Approach 1:
The device structure is segmented into distinct functional layers: electrochromic layer, light-emissive layer, ion transport layer, and electrode layers. Each layer contains specific materials optimized for its function, allowing for modular manufacturing where layers can be deposited or assembled separately before integration, thereby managing manufacturing complexity while maintaining multifunctionality
Solution Approach 2:
The patent employs composite material structures where electrochromic polymers are combined with fluorescent and phosphorescent compounds. These composite materials enable multiple optical responses within unified layers, reducing the number of separate components needed and simplifying the manufacturing process while achieving versatile color-switching properties
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 device achieves multifunctional color-switching capabilities, allowing for various display effects and applications, including wearable medical devices, sensors, and anti-counterfeiting technology, with adjustable emissive color intensities detectable by both naked eyes and fluorometers.
Implementation Method 1
an electrochromic layer including at least one electrochromic material that generates a subtractive color and switches from a colored state to a transmissive bleached state
Implementation Method 2
The emissive colors from light-emissive material are fluorescent or phosphorescent
Implementation Method 3
The emissive colors from light-emissive material are fluorescent or phosphorescent
Data Source
AI summary
A light-emitting electrochromic device with both electrochromic properties and light-emitting properties is disclosed. The light-emitting electrochromic device also shows multiple color-switching properties.