Inorganic Nanoparticle Ligand for Pattern Collapse Prevention
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Solution Overview
Problem
Existing liquid crystal display technologies face issues with pattern collapse after solution coating during pattern formation, due to the lack of sufficient curability in inorganic nanoparticles-based structures.
Innovation Solution
Incorporating a specific ligand with a double bond onto the surface of inorganic nanoparticles, allowing the structure to be cured using only photo-initiators or thermal-initiators, thereby enhancing curability and compatibility for applications such as thin films, light-emitting devices, and quantum dot displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic nanoparticles are used without surface modification, then the structure maintains simple composition, but curability is insufficient causing pattern collapse
Solution Approach 1:
The patent modifies the surface chemistry parameters of inorganic nanoparticles by introducing organic ligands containing double bonds. This chemical parameter change enables the nanoparticles to participate in polymerization reactions with photo-initiators, fundamentally improving curability from insufficient to excellent while maintaining relatively simple application processes.
Solution Approach 2:
The patent creates a composite structure by combining inorganic nanoparticles with organic ligands on their surfaces. This composite approach integrates the optical properties of inorganic materials with the reactive capabilities of organic molecules, achieving both curability and pattern stability without significantly complicating the overall device structure.
2Manufacturing precision
If solution is coated for pattern formation, then pattern definition is achieved, but pattern collapse occurs due to insufficient curability
Solution Approach 1:
The patent applies preliminary surface modification to nanoparticles before pattern formation. By pre-equipping nanoparticles with reactive ligands containing double bonds, the system ensures that curability is already established before solution coating, preventing pattern collapse during subsequent processing steps.
Solution Approach 2:
The patent changes the chemical reactivity parameters of the nanoparticle surface through ligand functionalization. This parameter change transforms the nanoparticles from non-reactive to highly reactive with photo-initiators, ensuring rapid curing and pattern stabilization after solution coating, thereby maintaining pattern definition without collapse.
3Reliability
If conventional ligands are used on inorganic nanoparticles, then basic stability is maintained, but curability remains insufficient
Solution Approach 1:
The patent changes the functional group parameters of surface ligands from conventional stable groups to reactive groups containing double bonds. This parameter change enables the nanoparticles to undergo polymerization reactions with standard photo-initiators, dramatically improving curability while maintaining ease of manufacture through compatibility with existing photolithography processes.
Solution Approach 2:
The patent introduces ligands that provide multiple functions: maintaining colloidal stability of nanoparticles and enabling polymerization reactions. This multi-functionality achieves excellent curability without requiring separate stabilization steps, thereby maintaining ease of manufacture and process simplicity.
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 modified inorganic nanoparticles-based structure exhibits excellent curability, preventing pattern collapse and improving compatibility, enabling smooth film formation and stable light emission with enhanced electric charge flow.
Implementation Method 1
the structure may be cured using only photo-initiators or thermal-initiators
Implementation Method 2
inorganic nano-particles receive the blue light and emit red light and green light to mixing them to output white light
Data Source
AI summary
An inorganic nanoparticles-based structure in accordance with the present disclosure includes inorganic nano-particles; and a novel ligand coordinated to a surface of each of the inorganic nano-particles, wherein the ligand has a urethane bond resulting from reaction with an isocyanate compound having a double bond, and, thus, has a double bond at terminals thereof. Further, the present disclosure provides an optical member, a light-emitting device, and a quantum dot display device including the inorganic nanoparticles-based structure.