Upconversion Multicolor Light-Emitting Polymer Composite for Volumetric Displays
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Solution Overview
Problem
Current technologies for volumetric displays face challenges in synthesizing nanoparticles that emit red, green, and blue colors, requiring complex nanostructures and complex manufacturing processes, which lead to weakened luminescence intensity and increased complexity.
Innovation Solution
A transparent upconversion multicolor light-emitting polymer composite is developed by mixing upconversion nanophosphors that emit red and blue colors with those that emit green and blue colors, using a core-shell-shell structure and a PDMS polymer, allowing for simple manufacturing and enhanced color reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple layers of multishells are formed around a core to achieve R/G/B full-color light emission, then color emission capability is improved, but manufacturing complexity increases and luminescence intensity weakens
Solution Approach 1:
The patent divides the single nanoparticle into multiple discrete nanoparticles, each with a simpler core-shell structure emitting specific colors. These segmented nanoparticles are then mixed into the polymer composite to achieve full-color emission, avoiding the complexity of multi-shell structures while maintaining color versatility.
Solution Approach 2:
The patent combines multiple types of upconversion nanoparticles with different emission colors (red, green, blue) into a single polymer composite material. This merging approach achieves full-color emission at the composite level rather than requiring each nanoparticle to have complex multi-shell structures.
2Adaptability or versatility
If multiple layers of multishells are formed around a core to achieve R/G/B full-color light emission, then color emission capability is improved, but luminescence intensity decreases
Solution Approach 1:
By segmenting the color emission function across multiple simple nanoparticles rather than stacking multiple shells within a single nanoparticle, the patent preserves the luminescence intensity of each individual nanoparticle while achieving full-color emission through their collective emission in the composite.
Solution Approach 2:
The patent creates a composite material system where multiple types of upconversion nanoparticles are embedded in a polymer matrix. This composite approach allows each nanoparticle type to maintain its optimal luminescence intensity while the combination provides full-color emission capability.
3Adaptability or versatility
If conventional volumetric display technology with stacked layers is used, then three-dimensional image capability is achieved, but element design becomes very complex
Solution Approach 1:
The patent merges the color emission functionality of multiple stacked layers into a single polymer composite containing mixed upconversion nanoparticles. This eliminates the need for complex multi-layer element design while maintaining the ability to generate three-dimensional volumetric images through color differentiation.
Solution Approach 2:
The patent changes the fundamental parameter of color generation from spatial separation (stacked layers) to compositional mixing (nanoparticle distribution in polymer). This parameter change simplifies the element design from complex multi-layer structures to a single-phase composite material with controlled nanoparticle composition.
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 composite achieves strong multicolor light emission in red, green, and blue colors when irradiated with specific infrared wavelengths, simplifying the manufacturing process and improving color reproducibility in volumetric displays.
Implementation Method 1
an upconversion nanophosphor emitting light in red and blue colors at wavelengths in each specific region by absorbing the infrared light
Implementation Method 2
an upconversion nanophosphor emitting light in green and blue colors at wavelengths in each specific region by absorbing the infrared light
Implementation Method 3
a polydimethylsiloxane (PDMS) polymer
Data Source
AI summary
An upconversion multicolor light-emitting polymer composite implements red, green, and blue colors at wavelengths in each specific region by mixing: an upconversion nanophosphor emitting light in red and blue colors at wavelengths in each specific region by absorbing the infrared light; an upconversion nanophosphor emitting light in green and blue colors at wavelengths in each specific region by absorbing the infrared light; and a polydimethylsiloxane (PDMS) polymer. Accordingly, a volumetric display with excellent color reproducibility may be realized with a simple manufacturing process.