Quantum Dot Light Control Layer for Low-Reflectance Displays
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Solution Overview
Problem
Existing display devices face challenges in improving display quality, particularly in reducing reflectance and enhancing color accuracy through effective light control mechanisms.
Innovation Solution
Incorporating a display element layer with a light control layer that includes first and second quantum dots and a metal nanomaterial, where the first quantum dots emit light in the wavelength range of 630 nm to 750 nm, the second quantum dots emit light in 495 nm to 570 nm, and the metal nanomaterial absorbs light in 550 nm to 590 nm, with specific weight percentages and scattering elements to optimize light conversion and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quantum dot light control parts are used to improve color accuracy, then color purity is improved, but reflectance increases
Solution Approach 1:
The patent combines quantum dots with metal nanomaterials (silver, aluminum, or magnesium nanoparticles) in the light control layer. This composite structure allows the quantum dots to provide color conversion while the metal nanomaterials suppress reflectance through their optical properties, achieving both color accuracy and reduced glare simultaneously
Solution Approach 2:
The patent applies different materials with specific functions to different regions or aspects of the light control system. Quantum dots are used for color conversion in specific wavelength ranges, while metal nanomaterials are incorporated to target specific reflectance issues, creating localized functional zones that address multiple requirements
2Measurement precision
If multiple light control parts with different quantum dots are added to improve color quality, then color purity is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated light control layer. Both color conversion (through quantum dots) and reflectance suppression (through metal nanomaterials) are combined in one layer, eliminating the need for separate components and simplifying the overall device structure while maintaining color purity
Solution Approach 2:
The light control layer is designed to perform multiple functions simultaneously: color conversion across different wavelength ranges, reflectance suppression, and potential scattering control. This multi-functional approach reduces the number of separate components needed, thereby reducing device complexity while improving color quality
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 solution enhances display quality by reducing reflectance and improving color accuracy, resulting in improved image clarity and reduced glare.
Implementation Method 1
a first light control part including first quantum dots, and a second light control part that is separated from the first light control part in a direction that is perpendicular to a thickness direction and including second quantum dots
Implementation Method 2
the first quantum dots may emit light in a wavelength range of about 630 nm to about 750 nm, the second quantum dots may emit light in a wavelength range of about 495 nm to about 570 nm
Implementation Method 3
the metal nanomaterial may absorb light in a wavelength range of about 550 nm to about 590 nm
Implementation Method 4
each of the first light control part and the second light control part may further include a scatterer
Data Source
AI summary
A display device includes a display element layer including a light emitting element, and a light control layer disposed on the display element layer and including a first control part including first quantum dots and a second light control part separated from the first light control part in a direction perpendicular to a thickness direction and including second quantum dots and a metal nanomaterial. The first quantum dots emit light in a wavelength range of about 630 nm to about 750 nm, the second quantum dots emit light in a wavelength range of about 495 nm to about 570 nm, and the metal nanomaterial absorbs light in a wavelength range of about 550 nm to about 590 nm.