Color conversion structure, display apparatus, and method of manufacturing the color conversion structure
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Solution Overview
Problem
Current display technologies using micro-semiconductor chips face challenges in achieving high-resolution color conversion with efficient light-emitting efficiency and cost-effectiveness, particularly in converting blue light to green or red light for color images, due to the poor performance of green and red micro-semiconductor chips.
Innovation Solution
A color conversion structure is developed, comprising a base with a photonic crystal structure and quantum dots, where the photonic crystal structure is designed to enhance light conversion efficiency by amplifying specific wavelengths and including a protection layer and reflection layer to reduce light leakage and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If green and red micro-semiconductor chips are used for color conversion, then color images can be displayed, but light-emitting efficiency is poor and manufacturing costs are high
Solution Approach 1:
The patent introduces quantum dots as an intermediary material that converts blue light from micro-semiconductor chips to green and red light. This mediator enables color conversion using only blue chips, avoiding the need for expensive and inefficient green/red chips while maintaining high light-emitting efficiency
Solution Approach 2:
The patent changes the material parameter by using quantum dots with specific size ranges (2-50 nm) to control the wavelength conversion. By adjusting quantum dot size and composition, blue light is converted to green/red light with high efficiency, resolving the contradiction between manufacturing cost and light-emitting efficiency
2Manufacturing precision
If conventional color conversion methods are used, then color images can be produced, but color reproducibility and light conversion efficiency are insufficient
Solution Approach 1:
The patent applies local quality by using quantum dots with precisely controlled sizes (2-50 nm) at specific locations to convert blue light to different wavelengths. The local quantum dot properties enable precise color reproduction while maintaining high conversion efficiency through size-dependent optical properties
Solution Approach 2:
The patent uses composite materials combining quantum dots with specific matrices or encapsulation structures. This composite approach enhances both color reproducibility through controlled quantum dot distribution and light conversion efficiency through optimized material interfaces
3Measurement precision
If high-resolution display is achieved using micro-semiconductor chips, then pixel density increases, but color conversion performance deteriorates
Solution Approach 1:
The patent segments the color conversion function into discrete quantum dot structures that can be precisely positioned on micro-semiconductor chips. This segmentation allows high-resolution color conversion by independently controlling quantum dot placement and size at each pixel location
Solution Approach 2:
The patent uses parameter changes in quantum dot size (2-50 nm) and composition to maintain color conversion performance at high resolutions. The scalable quantum dot parameters enable consistent color conversion across different display resolutions without performance deterioration
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 increases light-emitting efficiency and reduces manufacturing costs by effectively converting blue light to green or red light, improving color reproducibility and light conversion efficiency while being transferable to micro-semiconductor chip substrates.
Implementation Method 1
a photonic crystal structure on the base
Implementation Method 2
a plurality of quantum dots provided in the photonic crystal structure
Implementation Method 3
a distributed Bragg reflection layer on the photonic crystal structure
Data Source
AI summary
Disclosed are a color conversion structure, a display apparatus, and a method for manufacturing the color conversion structure. The color conversion structure includes a base, a photonic crystal structure provided on the base, and quantum dots included in the photonic crystal structure. The color conversion structure has a transferable structure.