Solvent-Free Thermosetting Quantum Dot Resin for Heat Stability
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Solution Overview
Problem
LED package displays face challenges with large thermal resistance, leading to deterioration in lifespan and reliability, especially when using quantum dots that are vulnerable to heat and moisture.
Innovation Solution
A solvent-free thermosetting quantum dot resin composition is developed, comprising quantum dots, a Dicyclopentadiene type epoxy resin, an acid anhydride curing agent, and a curing accelerator, which enhances light stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If quantum dots are used in LED package displays, then color purity and photo-stability are improved, but thermal resistance deteriorates leading to lifespan and reliability issues
Solution Approach 1:
The patent uses a composite resin system comprising alicyclic epoxy resin, polysiloxane, and inorganic fillers (nano-silica, isocyanurate) to create an encapsulation material that provides both thermal stability and protection for quantum dots. This composite structure allows the material to resist thermal degradation while maintaining the optical properties of quantum dots.
Solution Approach 2:
The patent modifies the chemical composition and molecular structure of the resin system by incorporating specific ratios of alicyclic epoxy resin to polysiloxane and adjusting the content of inorganic fillers. These parameter changes result in a resin composition with optimized thermal stability and mechanical properties that protect quantum dots from heat and moisture.
2Temperature
If alicyclic epoxy resin is used as thermosetting resin, then heat resistance is improved, but optical properties deteriorate after long-term use
Solution Approach 1:
The patent combines alicyclic epoxy resin with polysiloxane and inorganic fillers to create a synergistic resin system. The alicyclic epoxy provides heat resistance, while polysiloxane contributes to optical stability and flexibility, and inorganic fillers enhance both thermal and optical properties. This merging of materials allows the system to achieve both heat resistance and optical stability.
Solution Approach 2:
The patent introduces inorganic fillers (nano-silica, isocyanurate) specifically to enhance the thermal and optical properties of the resin system at the molecular level. These fillers are distributed throughout the resin matrix to provide localized reinforcement against thermal degradation and optical deterioration, allowing the resin to maintain its properties under harsh conditions.
3Quantity of substance
If quantum dots are applied in film form to LED package, then quantity of quantum dots and thickness are reduced, but thermal resistance increases
Solution Approach 1:
The patent uses a specially formulated thermosetting resin composition as an intermediary encapsulation layer between the quantum dot film and the external environment. This resin composition acts as a protective mediator that isolates the quantum dots from thermal and moisture stress while allowing the thin film structure to maintain its space-saving advantages.
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 composition achieves good retention of optical properties, with an optical property retention rate of 80% or more, even after long-term use in LED packages and display devices.
Implementation Method 1
a solvent-free thermosetting quantum dot resin composition comprising: quantum dots; an epoxy resin; an acid anhydride curing agent; and a curing accelerator
Implementation Method 2
an acid anhydride curing agent; and a curing accelerator
Data Source
AI summary
The present invention relates to a solvent-free thermosetting quantum dot resin composition, a quantum dot resin composite prepared therefrom, an LED package and a display device employing the same and, specifically, to a solvent-free thermosetting quantum dot resin composition having excellent ability to maintain optical characteristics even after long-term driving of a display, a quantum dot resin composite prepared therefrom, an LED package and a display device employing same.