Quantum Dot Film Composition for Display Patterning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing curable resin compositions for forming wavelength conversion films in display devices do not adequately address the need for films with favorable patterning characteristics and light-emitting characteristics.
Innovation Solution
A composition comprising quantum dots and a specific vinyl copolymer, which includes structural units derived from (meth)acrylic acid, (meth)acrylate with a carboxy group, and (meth)acrylate without a carboxy group, along with a tellurium compound, is used to form a film with improved patterning and light-emitting properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional curable resin compositions are used, then the film formation process is simple, but the patterning characteristics and light-emitting characteristics are insufficient
Solution Approach 1:
The patent applies parameter changes by precisely controlling the molecular weight distribution (PDI ≤ 2.0) and acid value (100-150 mg KOH/g) of the vinyl copolymer, along with specifying the content range of tellurium compound (0.01-5 wt%), to achieve favorable patterning characteristics and high quantum yield in the resulting film
Solution Approach 2:
The patent uses composite materials by combining quantum dots with a specifically designed vinyl copolymer system that includes multiple structural units ((meth)acrylic acid, (meth)acrylate with carboxy group, and (meth)acrylate without carboxy group) and tellurium compound, creating a composition that achieves both good patterning characteristics and light-emitting properties
2Illumination intensity
If quantum dot content is increased to improve light-emitting characteristics, then quantum yield increases, but aggregate formation increases
Solution Approach 1:
The patent controls the acid value of the vinyl copolymer within 100-150 mg KOH/g and the tellurium compound content within 0.01-5 wt%, which prevents quantum dot aggregation while maintaining high quantum yield. The specific acid value range ensures proper surface interaction with quantum dots without excessive aggregation
Solution Approach 2:
The vinyl copolymer acts as an intermediary material between the quantum dots and the film matrix. Its specific molecular structure with multiple functional groups and controlled molecular weight distribution serves as a mediator that disperses quantum dots uniformly while maintaining their optical properties
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 enables the formation of films with enhanced patterning characteristics, such as clear line-and-space patterns, and improved light-emitting characteristics, including high quantum yield and external quantum efficiency, while minimizing aggregate formation.
Implementation Method 1
a vinyl copolymer (B), which has: a structural unit derived from (meth)acrylic acid, a structural unit derived from (meth)acrylate having a carboxy group, and a structural unit derived from (meth)acrylate having no carboxy group
Data Source
AI summary
Provided is a composition containing a quantum dot (A) and a vinyl copolymer (B), wherein the vinyl copolymer (B) has a structural unit derived from (meth)acrylic acid, a structural unit derived from (meth)acrylate having a carboxy group, and a structural unit derived from (meth)acrylate having no carboxy group; contains a tellurium compound; has a molecular weight distribution of 2.0 or less; and has an acid value of 100 mgKOH/g to 150 mgKOH/g.