Methacrylate Nanoparticle Ink Composition for Low-Viscosity Printing
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Solution Overview
Problem
Existing compositions face challenges in achieving homogeneous dispersion of semiconducting light emitting nanoparticles and scattering particles, high viscosity, solvent usage, high vapor pressure, and poor thermal stability, which hinder efficient inkjet printing and device performance.
Innovation Solution
A composition comprising specific (meth)acrylate monomers with controlled viscosity and boiling point, combined with semiconducting light emitting nanoparticles and optional shell layers, along with a polymer dispersant, to achieve low viscosity, low vapor pressure, and improved thermal stability, enabling smooth inkjet printing and enhanced quantum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high loading of semiconducting light emitting nanoparticles is used, then quantum yield and external quantum efficiency are improved, but viscosity increases making inkjet printing difficult
Solution Approach 1:
The patent changes the chemical composition parameters of the matrix material by using a specific mixture of (meth)acrylate monomers with controlled viscosity and reactivity. This allows the composition to maintain low viscosity even at high nanoparticle loadings (30-80 wt%), enabling inkjet printing while preserving high quantum yield and external quantum efficiency of the semiconducting light emitting nanoparticles
Solution Approach 2:
The patent creates a composite material system combining semiconducting light emitting nanoparticles with a specifically designed (meth)acrylate monomer matrix. This composite structure allows the nanoparticles to maintain their high quantum yield properties while the matrix provides low viscosity and good inkjet printability, resolving the contradiction between high loading efficiency and ease of printing
2Ease of operation
If solvent is added to reduce viscosity, then inkjet printing becomes easier, but vapor pressure increases causing printing uniformity issues
Solution Approach 1:
The patent extracts and eliminates the solvent component from the composition entirely, using only (meth)acrylate monomers as the matrix material. This removal of solvent achieves low viscosity for easy inkjet printing while simultaneously eliminating the high vapor pressure that causes uniformity problems, resolving the contradiction between ease of printing and printing quality
Solution Approach 2:
The patent changes the physical state parameters by using low molecular weight (meth)acrylate monomers instead of solvents. These monomers provide liquid流动性 for printing without the high vapor pressure characteristic of traditional solvents, thus achieving both low viscosity and low vapor pressure simultaneously
3Reliability
If high loading of scattering particles is used, then light scattering performance is improved, but homogeneous dispersion becomes difficult
Solution Approach 1:
The patent modifies the matrix material parameters by selecting (meth)acrylate monomers with specific viscosity and reactivity characteristics. This enables the matrix to effectively wet and disperse scattering particles even at high loadings, maintaining homogeneous distribution while preserving light scattering performance
Solution Approach 2:
The patent develops a composite system where semiconducting light emitting nanoparticles and scattering particles are co-dispersed in a (meth)acrylate monomer matrix. This composite approach allows both particle types to be uniformly distributed throughout the composition, achieving both homogeneous dispersion and optimal light scattering performance
4Ease of manufacture
If conventional matrix materials are used, then fabrication is simple, but thermal stability is insufficient
Solution Approach 1:
The patent uses (meth)acrylate monomers as the matrix material, which upon photopolymerization form a crosslinked network structure. This composite structure provides enhanced thermal stability compared to conventional linear polymer matrices, while the photopolymerization process remains simple and compatible with standard inkjet printing fabrication methods
Data Source
AI summary
The present invention relates to a composition comprising a (meth)acrylate monomer.