Color Conversion Device Banks Resistant to Quantum Dot Ink
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Solution Overview
Problem
Existing technologies face challenges with the degradation of bank structures when in contact with quantum dot ink, leading to integrity loss, delamination, and poor dispersion of light-emitting nanoparticles, which affects optical properties and printing quality.
Innovation Solution
A color conversion device comprising a matrix material with light-emitting moieties and a bank made of a polymer material, using a low-viscosity acrylate monomer composition for inkjet printing, with a surfactant and saccharide to enhance dispersion and chemical stability, and a bank composition that withstands low-concentration developers for improved resolution and light shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a bank structure is used to define pixel areas, then light shielding properties and resolution are improved, but the bank structure degrades upon contact with quantum dot ink, leading to dissolution, delamination, and intermixing
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of the bank material. Specifically, it uses a polymer material with controlled molecular weight (1,000-100,000) and specific functional groups (carboxyl, hydroxyl, or amine groups with 1-50% content) to achieve both structural integrity and chemical resistance against quantum dot ink
Solution Approach 2:
The patent employs composite materials by combining polymer materials with specific functional groups in defined proportions. The composite nature of the bank material (polymer base with functional group additives) provides both mechanical strength for structural integrity and chemical functionality for resistance against ink dissolution
2Illumination intensity
If quantum dot ink is applied to achieve light emission, then optical properties are improved, but the ink causes degradation of the bank structure through dissolution and delamination
Solution Approach 1:
The patent introduces the polymer material with specific functional groups as an intermediary between the quantum dot ink and the bank structure. This intermediary layer provides chemical compatibility that prevents direct harmful interactions, allowing the ink to maintain its light-emitting properties while the bank structure remains intact
Solution Approach 2:
The patent modifies the chemical parameters of the bank material by incorporating polymers with specific functional groups (carboxyl, hydroxyl, or amine) at controlled concentrations (1-50%). These parameter changes create chemical compatibility with the quantum dot ink, preventing dissolution and delamination while preserving optical properties
3Ease of manufacture
If conventional bank materials are used, then fabrication is simplified, but chemical resistance against quantum dot ink is insufficient, leading to intermixing and loss of bank integrity
Solution Approach 1:
The patent achieves improved chemical resistance through parameter changes in the polymer material selection. By controlling molecular weight (1,000-100,000) and functional group content (1-50%), the material gains enhanced chemical resistance while remaining compatible with existing fabrication processes
Solution Approach 2:
The patent applies homogeneity by using polymer materials that provide uniform chemical properties throughout the bank structure. This homogeneous composition ensures consistent chemical resistance across the entire bank, preventing localized degradation and intermixing with quantum dot ink
4Illumination intensity
If light-emitting nanoparticles are dispersed in composition, then optical properties are enhanced, but homogeneous dispersion is difficult to achieve, affecting printing quality
Solution Approach 1:
The patent improves dispersion uniformity through parameter changes in the composition formulation. By adjusting the molecular weight and functional group content of the polymer material (1,000-100,000 and 1-50% respectively), the composition achieves optimal solubility and compatibility, enabling homogeneous dispersion of light-emitting nanoparticles
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 provides enhanced chemical resistance, homogeneous dispersion, and improved optical properties, allowing for high-resolution printing without clogging and maintaining pixel integrity.
Implementation Method 1
a bank made of a polymer material... improved homogeneous dispersion of semiconducting light emitting nanoparticles in the composition... composition having lower viscosity suitable for inkjet printing
Implementation Method 2
using a low-viscosity acrylate monomer composition for inkjet printing, with a surfactant and saccharide to enhance dispersion and chemical stability
Implementation Method 3
with a surfactant and saccharide to enhance dispersion and chemical stability... improved homogeneous dispersion of semiconducting light emitting nanoparticles in the composition
Implementation Method 4
A color conversion device comprising a matrix material with light-emitting moieties and a bank made of a polymer material, using a low-viscosity acrylate monomer composition
Data Source
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AI summary
The present invention relates to a color conversion device (100).