Monochromatic Quantum Dot Layer for Liquid Crystal Display Color Gamut
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Solution Overview
Problem
Current liquid crystal display panels lack the ability to effectively utilize quantum dots to enhance color gamut and graphic quality, as they are not integrated within the display panel.
Innovation Solution
A liquid crystal display panel is designed with a monochromatic quantum dot layer integrated between substrates, where the quantum dots are dispersed within a macromolecular polymer network generated by polymerizing a phenolic resin derivative and a diazonaphthol derivative under UV light, allowing for efficient conversion of background light into monochromatic light for each sub-pixel unit, thereby expanding the color gamut and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dots are integrated within the liquid crystal display panel, then the color gamut and graphic quality are improved, but the device complexity increases
Solution Approach 1:
The quantum dots are integrated within the liquid crystal display panel structure, nesting the quantum dot layer between the backlight module and the liquid crystal layer. This nesting approach incorporates the quantum dot functionality without requiring a completely separate display system, thereby improving color gamut while controlling device complexity.
Solution Approach 2:
The patent employs a composite structure combining quantum dots with the liquid crystal display panel components. The quantum dot layer is integrated with the backlight module and liquid crystal layer, creating a composite system that leverages the optical properties of quantum dots to enhance color gamut while maintaining the structural integrity of the display panel.
2Illumination intensity
If monochromatic quantum dot layer is disposed at sub-pixel unit positions, then the color saturation and light gamut are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The monochromatic quantum dot layer is disposed at specific sub-pixel unit positions within the pixel units, applying different quantum dot layers to different sub-pixel locations. This local quality approach ensures that each sub-pixel receives the appropriate monochromatic light for its color function, improving color saturation while managing manufacturing precision through targeted placement rather than uniform distribution.
3Use of energy by moving object
If quantum dots are used to convert background light into monochromatic light, then the optical efficiency is improved, but the reliability concerns regarding quantum dot stability increase
Solution Approach 1:
The patent addresses quantum dot stability concerns by implementing protective measures in advance, such as encapsulating the quantum dots within the display structure and using appropriate encapsulation materials that prevent degradation. This beforehand cushioning approach ensures quantum dot reliability while maintaining their optical efficiency for converting background light into monochromatic light.
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 integration of quantum dots within a macromolecular polymer network enhances the color gamut and saturation of the display panel, preventing aggregation and increasing the quantum yield, while the polymer network shields the quantum dots from oxygen, extending their lifespan and improving optical efficiency.
Implementation Method 1
allowing UV light to illuminate on the substrate through the unit of the mask plate which polymerizes the phenolic resin derivative and the diazonaphthol derivative under action of the photoinitiator to generate a macromolecular polymer network
Implementation Method 2
the monochromatic quantum dot layer, upon being excited by background light, emits monochromatic light corresponding to the color of the sub-pixel unit
Data Source
AI summary
A liquid crystal display panel, in which pixel units are provided on the liquid crystal display panel, each pixel unit includes sub-pixel units displaying different colors, at a position of the apposed substrate or the array substrate corresponding to the sub-pixel unit of at least one color in each pixel unit, a monochromatic quantum dot layer is disposed. This liquid crystal display panel has increased color gamut of the liquid crystal display panel, enhanced color saturation, increased display quality, and increased life of quantum dots. A display device and a process for patterning the monochromatic quantum dot layer are also provided.