Self-Repairing Spacer via Metal-Ligand Coordination for LCD Reliability
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Solution Overview
Problem
Existing spacers in liquid crystal displays (LCDs) fail to accommodate the contradictory requirements of high temperature Mura performance, low temperature bubble, high altitude low pressure, and surface pressure tests due to inadequate elastic recovery rates, affecting display performance and quality.
Innovation Solution
A method for manufacturing a spacer that incorporates a self-repairing and scalable ligand coordination structure, which can change shape in different electric fields, allowing for self-repair and improved mechanical properties to meet the opposing needs of elastic recovery rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spacers have good elasticity to improve high temperature Mura performance, then the Mura performance is improved, but the spacers cannot resist pressure in surface pressure tests
Solution Approach 1:
The patent changes the chemical composition parameters of the spacer material by incorporating coordination structures with metal ions (Fe3+, Zn2+, Cu2+) and organic ligands. This chemical parameter change enables the material to exhibit both elasticity and pressure resistance simultaneously, resolving the contradiction between Mura performance and surface pressure resistance.
Solution Approach 2:
The patent creates a composite material system consisting of coordination structures formed by the interaction between metal ions and organic ligands (such as pyridine derivatives). This composite structure combines the elasticity provided by the organic ligand framework with the strength provided by the metal coordination bonds, allowing the spacer to satisfy both Mura performance and surface pressure resistance requirements.
2Reliability
If the spacers have less elasticity to improve high altitude low pressure performance, then the low pressure performance is improved, but the spacers cannot maintain uniformity in high temperature Mura tests
Solution Approach 1:
The patent modifies the elastic modulus and compressibility parameters of the spacer material through the coordination structure design. The metal-ligand coordination bonds provide controlled elasticity that allows the spacer to compress under low pressure conditions while maintaining thickness uniformity through the structural stability of the coordination network.
Solution Approach 2:
The coordination structure composite material combines the compressibility needed for low pressure performance with the structural stability required for thickness uniformity. The metal ions act as structural nodes that maintain geometric stability while the organic ligands provide the necessary elasticity for pressure accommodation.
3Reliability
If the spacers have good elasticity to improve low temperature bubble performance, then the bubble performance is improved, but the spacers cannot resist pressure in surface pressure tests
Solution Approach 1:
The patent adjusts the glass transition temperature and elastic recovery parameters of the spacer material by selecting appropriate metal ions and organic ligands. This enables the material to exhibit enhanced elasticity at low temperatures for bubble performance while maintaining sufficient strength through the coordination bonds to resist surface pressure.
Solution Approach 2:
The coordination structure composite provides temperature-dependent mechanical properties where the organic ligand framework ensures elasticity for bubble prevention at low temperatures, while the metal coordination bonds provide the strength needed for surface pressure resistance.
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 spacer can self-repair and adapt to various electric field conditions, enhancing display performance and product quality by accommodating the contradictory requirements of high temperature Mura, low temperature bubble, high altitude low pressure, and surface pressure tests.
Implementation Method 1
a self-repairing and scalable ligand coordination structure in the electric field is added into a spacer of the present application, so that the spacer can be self-repaired after being damaged and can change shape in different electric fields
Data Source
AI summary
A spacer, a method for manufacturing the spacer, and a display device are provided. The method includes: a step S10 of reacting a resin compound and a pyridine compound to generate an intermediate, a step S20 of reacting the intermediate and a metal ligand by a coordination reaction to obtain a coordination structure, and a step S30 of mixing the coordination structure, a monomer, a solvent, a starting agent, and an additive to prepare the spacer.