Quantum Dot Light Guide Plate for Simplified White Light Emission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light guide plates for displays require complex mechanical structures and high manufacturing costs to achieve white light emission, particularly when using multiple LEDs for different color spectrums.
Innovation Solution
Incorporating quantum dots of varying sizes on the surface and inside the light guide plate, which convert incident light into white light by emitting different wavelengths, allowing for a simplified light source structure and improved light transmission properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs emitting different color spectrums are used to realize white light, then white light emission is achieved, but the mechanical structure becomes complicated and manufacturing cost increases
Solution Approach 1:
The patent combines multiple quantum dot layers with different emission wavelengths (red, green, blue) into a single integrated light guide plate structure. This merging approach allows white light to be generated by a single light source passing through multiple quantum dot layers, eliminating the need for separate LED modules for each color and thus simplifying the mechanical structure while achieving white light emission.
Solution Approach 2:
The patent utilizes the size-dependent emission wavelength property of quantum dots to generate different colors. By controlling the size parameters of quantum dots in different layers, the system achieves multi-wavelength emission from a single light source, replacing the need for multiple LEDs with different spectral characteristics and simplifying the overall device structure.
2Illumination intensity
If multiple LEDs emitting different color spectrums are used to realize white light, then white light emission is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple quantum dot layers with different emission wavelengths (red, green, blue) into a single integrated light guide plate structure. This merging approach allows white light to be generated by a single light source passing through multiple quantum dot layers, eliminating the need for separate LED modules for each color and thus simplifying the mechanical structure while achieving white light emission.
Solution Approach 2:
The patent utilizes the size-dependent emission wavelength property of quantum dots to generate different colors. By controlling the size parameters of quantum dots in different layers, the system achieves multi-wavelength emission from a single light source, replacing the need for multiple LEDs with different spectral characteristics and simplifying the overall device structure.
3Illumination intensity
If quantum dots are dispersed on the surface and inside the light guide plate, then light transmission and color purity are improved, but the structure becomes more complex
Solution Approach 1:
The patent applies quantum dots with specific properties (size, emission wavelength) to specific locations within the light guide plate structure. Different quantum dot layers are positioned at different depths and locations to optimize light transmission and color purity at each stage, allowing the structure to achieve high performance without unnecessary complexity through targeted, localized optimization.
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 use of quantum dots enables the realization of white light emission with improved light transmission and color purity, reducing the complexity and cost of the light source structure while maintaining uniform light distribution.
Implementation Method 1
a plurality of quantum dots dispersed on at least one of a surface of the light guide plate and inside the light guide plate, wherein the plurality of quantum dots emit light having a different wavelength than a light incident thereto
Data Source
AI summary
A light guide plate includes a plurality of quantum dots on at least one of a surface of the light guide plate and inside the light guide plate, wherein the plurality of quantum dots emit light having a different wavelength than a light incident thereto.