Quantum Dot Display Panel Color Reproducibility
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Solution Overview
Problem
Display devices face challenges with color reproducibility and display accuracy, particularly with blue colors, due to limitations in existing technologies such as photoluminescent panels.
Innovation Solution
A display panel utilizing a quantum dot converter and light transmitter, where quantum dots convert blue light into red and green light, enhancing color gamut and accuracy by dispersing and emitting light in various directions, and a light transmitter that includes dispersion particles and light converting units to improve blue light dispersion and conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional photoluminescent panel is used, then the device structure is simple, but the color reproducibility and display accuracy are poor
Solution Approach 1:
The patent segments the color conversion function into multiple quantum dot layers, with each layer containing quantum dots of specific sizes that convert blue light to different wavelengths. This segmentation enables precise control over color output while maintaining a relatively compact overall structure, resolving the contradiction between color accuracy and device simplicity.
Solution Approach 2:
The patent employs composite quantum dot materials with different size distributions within a single converter structure. By combining quantum dots of various sizes in controlled proportions, the system achieves broad spectrum coverage and accurate color reproduction without requiring multiple separate converter modules, thus improving color fidelity while limiting structural complexity.
2Manufacturing precision
If quantum dots with narrow size distribution are used, then the color purity is high, but the color gamut coverage is limited
Solution Approach 1:
The patent applies local quality by creating regions with different quantum dot size distributions within the converter. Each local region contains quantum dots optimized for specific wavelength conversions, and by spatially arranging these regions, the system achieves both high color purity in individual channels and comprehensive color gamut coverage when all regions work together.
Solution Approach 2:
The patent utilizes parameter changes by varying the size distribution parameters of quantum dots across different layers or regions. By systematically adjusting the average size and size spread of quantum dots, the system optimizes the balance between color purity (narrow distribution) and gamut coverage (broad range of sizes), enabling adaptation to different color standards.
3Illumination intensity
If blue light is directly transmitted without conversion, then the blue color display is bright, but the color accuracy is poor
Solution Approach 1:
The patent applies partial action by converting only a portion of the blue light spectrum while allowing other wavelengths to pass through. The quantum dot converter is designed to convert specific blue light wavelengths to red and green, while maintaining adequate blue light transmission, thus achieving color accuracy without completely sacrificing blue brightness.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the quantum dot concentration, size distribution, and layer thickness to optimize the balance between blue light conversion and transmission. By carefully controlling these parameters, the system achieves accurate blue color reproduction while maintaining sufficient brightness for display requirements.
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 significantly improves color reproducibility and accuracy, especially for blue colors, by increasing the range of colors that can be displayed, covering a broader spectrum and matching standard color coordinates like sRGB and DCI-P3.
Implementation Method 1
a quantum dot converter including a plurality of quantum dot units, each having a predetermined size and emitting light of a predetermined color according to a quantum isolation effect
Implementation Method 2
The light transmitter may include a plurality of dispersion particles which disperse incident blue-based light
Data Source
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AI summary
Disclosed are a display panel and a display device. The display panel (10) includes a quantum dot converter (16) configured to convert light of a predetermined color emitted from a light source (L) into light of a different color using a quantum dot unit (16b,16c) and emit the converted light; and a light transmitter (16a) configured to transmit a part of the light of the predetermined color emitted from the light source and convert a remaining part of the light of the predetermined color into light of a different color and emit the converted light.