Quantum Dot Complex with Halogen Ligands for Display Efficiency
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Solution Overview
Problem
Existing display devices face challenges in improving color reproducibility and luminous efficiency, particularly in self-luminous type display elements using organic compounds.
Innovation Solution
A quantum dot complex is developed, comprising a quantum dot with ligands bound to its surface, specifically including a first and second coupling part with corresponding ligands, and containing a halogen element in amounts ranging from 1 at % to 12 at % relative to the total content, enhancing luminous efficiency and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional quantum dot structures are used, then manufacturing process is simple, but luminous efficiency is insufficient
Solution Approach 1:
The patent applies composite materials by combining quantum dots with specific ligands (first and second ligands) to form a quantum dot complex. The first ligand binds to first coupling parts on the quantum dot surface, while the second ligand binds to second coupling parts, creating a composite structure that improves luminous efficiency through enhanced electronic properties and reduced energy loss.
Solution Approach 2:
The patent applies local quality by introducing different types of ligands to different coupling parts on the quantum dot surface. The first ligand is bound to first coupling parts while the second ligand is bound to second coupling parts, creating localized functional regions that optimize specific properties such as luminous efficiency and charge transport at different locations on the quantum dot surface.
2Loss of energy
If complex ligand structures are used, then luminous efficiency improves, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the ligand system into distinct first and second ligands, each bound to specific coupling parts on the quantum dot surface. This segmentation allows for independent optimization and synthesis of each ligand type, simplifying the overall manufacturing process while maintaining the beneficial effects of the complete ligand system.
Solution Approach 2:
The patent applies parameter changes by controlling the binding of ligands to specific coupling parts on the quantum dot surface. By adjusting parameters such as ligand type, binding position, and concentration, the patent optimizes luminous efficiency while maintaining manufacturability through systematic parameter optimization rather than complex process requirements.
3Manufacturing precision
If halogen elements are added, then color reproducibility improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by controlling the amount of halogen elements (fluorine, chlorine, bromine, or iodine) within specific ranges (1 at% to 12 at%) in the quantum dot complex. This parameter control optimizes color reproducibility by adjusting the electronic structure and optical properties of the quantum dot complex while maintaining manufacturability through defined concentration ranges.
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 quantum dot complex achieves improved luminous efficiency and reduced manufacturing costs and time, leading to enhanced performance in display devices with improved color reproducibility.
Implementation Method 1
a ligand bound to a surface of the quantum dot, wherein the surface of the quantum dot is provided with a plurality of coupling parts to which the ligand is bound
Implementation Method 2
self-luminous type display element that may realize a display by emitting light from a light emitting material
Data Source
AI summary
A quantum dot complex according to an embodiment comprises a quantum dot; and a ligand bound to a surface of the quantum dot, wherein the surface of the quantum dot is provided with a plurality of coupling parts to which the ligand is bound; wherein the plurality of coupling parts include a first coupling part and a second coupling part. The ligand includes a first ligand bound to the first coupling part and a second ligand bound to the second coupling part, wherein the second ligand includes a halogen element. The halogen element is contained in an amount of 1 at % to 12 at % to the total content of the quantum dot complex.