Norbornene Hard Coating for Window Durability and Anti-Fingerprint
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Solution Overview
Problem
Existing window members in display devices face challenges in providing effective durability and anti-fingerprint functionality, particularly in maintaining a clean surface while protecting the display panel.
Innovation Solution
A hard coating composition is developed, incorporating a norbornene-based compound and polymers like epoxy-based, polyurethane-based, or acrylic resins, which form a multi-layered hard coating layer on the window member, enhancing durability and incorporating fluoroalkyl groups for improved surface properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional single-layer coating is used, then the manufacturing process is simple, but the durability and anti-fingerprint functionality are insufficient
Solution Approach 1:
The coating system is divided into multiple functional layers: a first coating layer containing a norbornene-based compound with fluoroalkyl groups for anti-fingerprint properties, and a second coating layer containing a polymer with crosslinkable functional groups for enhanced durability. This segmentation allows each layer to perform its specific function optimally while together they provide both anti-fingerprint and durability requirements.
Solution Approach 2:
The invention uses composite coating materials combining norbornene-based compounds with fluoroalkyl groups and polymers with crosslinkable functional groups. This composite approach creates a multi-functional coating system that simultaneously achieves anti-fingerprint functionality from the fluoroalkyl groups and enhanced durability from the crosslinked polymer structure.
2Object-affected harmful factors
If fluoroalkyl groups are incorporated to improve anti-fingerprint properties, then surface cleanliness is improved, but the coating formulation becomes more complex
Solution Approach 1:
The fluoroalkyl groups are strategically incorporated into the norbornene-based compound specifically in the first coating layer where anti-fingerprint properties are most needed. This localized placement of fluoroalkyl groups provides surface cleanliness and anti-fingerprint functionality where it matters most, while the second layer provides structural durability.
3Strength
If a multi-layered hard coating is applied to enhance durability, then the protective function is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The coating formulation is designed with the first norbornene-based coating layer applied first as a preliminary layer that provides anti-fingerprint properties and serves as a foundation. The second polymer-based coating layer is then applied over it to provide additional durability and crosslinked structure. This sequential preliminary action allows each layer to be optimized for its specific function while maintaining manufacturability through a straightforward sequential application process.
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 hard coating composition significantly improves the durability and anti-fingerprint functionality of window members, maintaining a clean surface and protecting the display panel effectively.
Implementation Method 1
the norbornene-based compound may be a product of a ring opening metathesis polymerization (ROMP) of a first monomer having a crosslinkable functional group and a second monomer having a fluoroalkyl group
Implementation Method 2
Ry may represent an alkyl group having a crosslinkable functional group... The first layer may include a cross-linked structure formed by curing a polymer... The second layer may include a cross-linked structure formed by curing a norbornene-based compound
Data Source
AI summary
A hard coating composition includes a norbornene-based compound represented by a Chemical Formula 1 and a polymer including at least one of an epoxy-based resin, a polyurethane-based resin, or an acrylic resin.