Anti-Reflection Hard Coating for Scratch-Resistant Display Surfaces
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Solution Overview
Problem
Conventional anti-reflection coatings for displays suffer from insufficient mechanical performance, low hardness, and poor scratch resistance, failing to meet the requirements for durability and image clarity.
Innovation Solution
An anti-scratch anti-reflection module comprising a substrate, a reflective index control layer, and a hardening layer, where the reflective index control layer is made of metal oxide particles and the hardening layer includes a specific composition of photocurable resin, photoinitiator, cross-linking agent, and photopolymerizable monomer, enhancing mechanical properties and scratch resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional anti-reflection coating is deposited on a display substrate, then the reflection of external light sources is reduced and image clarity is enhanced, but the mechanical performance is insufficient with hardness less than 2H and abrasion resistance less than 10 cycles
Solution Approach 1:
The patent uses a composite material system consisting of photocurable resin, photopolymerizable monomer, cross-linking agent, and photoinitiator. This composite formulation creates a coating that simultaneously achieves optical performance (anti-reflection) and mechanical durability (hardness 3H-5H, abrasion resistance greater than 50 cycles) by combining the optical properties of the resin with the hardening effects of the cross-linking network formed during UV curing.
Solution Approach 2:
The patent adjusts key parameters including the functionality of photocurable resin (≥5), functionality of cross-linking agent (≥2), glass transition temperature of photopolymerizable monomer (≥80°C), and specific weight ratios of components. These parameter changes transform the coating from a soft, scratch-prone layer to a hard, durable protective layer while maintaining anti-reflection properties through controlled refraction and interference effects.
2Ease of manufacture
If simple resin coating is used for anti-reflection, then the manufacturing process is simple, but the reflective index cannot be sufficiently reduced and mechanical performance is under-qualified
Solution Approach 1:
The patent changes multiple parameters simultaneously: resin functionality (≥5), monomer glass transition temperature (≥80°C), cross-linking agent functionality (≥2), and component ratios. These parameter adjustments enable the simple coating process to produce a high-performance layer with hardness 3H-5H and abrasion resistance greater than 50 cycles, meeting display industry standards without complex manufacturing steps.
Solution Approach 2:
The patent creates a multi-component composite system where photocurable resin provides the base matrix, photopolymerizable monomer enhances flexibility and cross-linking, cross-linking agent forms the rigid network for hardness, and photoinitiator enables UV-curing. This composite approach achieves both manufacturing simplicity and performance qualification.
3Illumination intensity
If nanoparticles are introduced to reduce reflective index, then anti-reflection performance is improved, but the nanoparticles preferentially deposit on surfaces preventing effective cross-linking and reducing mechanical performance
Solution Approach 1:
The patent adjusts the glass transition temperature of photopolymerizable monomer to ≥80°C and resin functionality to ≥5, which maintains adequate viscosity and reactivity during coating and curing. This prevents nanoparticle aggregation and ensures uniform distribution throughout the coating thickness, allowing effective UV penetration and cross-linking throughout the layer while maintaining low reflective index for anti-reflection performance.
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 module significantly improves surface hardness and abrasion resistance, preventing scratches and maintaining image clarity by adjusting the reflective index and film thickness, thereby extending the display module's service life and enhancing user experience.
Implementation Method 1
Material of the hardening layer includes 100 parts by weight of photocurable resin; 1 to 10 parts by weight of photoinitiator; 0.1 to 1 part by weight of cross-linking agent; to 40 parts by weight of photopolymerizable monomer
Implementation Method 2
The reflective index control layer is disposed on a surface of the substrate. Material of the reflective index control layer includes metal oxide
Data Source
AI summary
An anti-scratch anti-reflection module, a manufacturing method for the same, and a display panel are provided. The anti-scratch anti-reflection module includes a substrate, a reflective index control layer, and a hardening layer. The reflective index control layer is disposed on a surface of the substrate. The hardening layer is disposed on a surface of the reflective index control layer away from the substrate. Material of the reflective index control layer includes metal oxide.