Antifouling Layer Adhesion via Cohesive Silicon Oxide Carbon Composite
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Solution Overview
Problem
Conventional glass substrates with antifouling layers for touch panels and display devices face challenges with abrasion resistance, leading to reduced durability and increased fouling visibility due to scattering and reflection differences.
Innovation Solution
A glass substrate with an antifouling layer featuring a cohesive layer containing silicon oxide and carbon atoms, combined with a fluorine-containing hydrolyzable silicon compound, providing enhanced water and oil repellency and improved adhesion to the glass substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antifouling layer is formed on a glass substrate to suppress adhesion of fouling, then water repellency and oil repellency are improved, but abrasion resistance deteriorates
Solution Approach 1:
The patent applies composite materials by creating a multi-layer structure consisting of a glass substrate, a cohesive layer, and an antifouling layer. The cohesive layer contains silicon oxide and carbon atoms, forming a composite structure that bonds the antifouling layer to the glass substrate while maintaining both antifouling properties and abrasion resistance through the synergistic combination of different materials.
Solution Approach 2:
The cohesive layer acts as an intermediary between the glass substrate and the antifouling layer. This intermediate layer contains silicon oxide and carbon atoms, providing a bonding interface that ensures strong adhesion while protecting the antifouling layer from mechanical damage, thus improving both durability and abrasion resistance.
2Duration of action of stationary object
If the antifouling layer is made more durable through repeated wiping, then abrasion resistance is improved, but the structure becomes more complex
Solution Approach 1:
The patent segments the coating structure into distinct functional layers: a glass substrate, a cohesive layer with specific composition (silicon oxide and carbon atoms), and an antifouling layer. This segmentation allows each layer to perform its specific function while simplifying the overall design and manufacturing process through clear functional division.
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 significantly enhances the abrasion resistance and durability of the antifouling layer, maintaining excellent antifouling properties even after repeated cleaning, thereby improving the visibility and longevity of the glass substrate.
Implementation Method 1
an antifouling layer provided on a surface of the cohesive layer, wherein the cohesive layer has a layer, the layer is in contact with the antifouling layer, contains mainly a silicon oxide, and contains carbon atoms at a concentration of 5 × 10 18 to 5 × 10 20 atoms/cm 3
Data Source
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AI summary
The present invention relates to a method for manufacturing a glass substrate with an antifouling layer, the method comprising: adhering an adhesive made of a carbon-containing material on one principle surface of the glass substrate having a pair of principal surfaces facing to each other, while the adhesive is exposed outward from at least a part of an outer periphery of the glass substrate; performing a film-formation of a material containing a silicon oxide on the other principle surface of the glass substrate to form a cohesive layer under a state where the adhesive is adhered on the glass substrate; and forming the antifouling layer on a surface of the cohesive layer, wherein a method of the film-formation is at least one method selected from the group consisting of a vacuum deposition method, an ion beam assisted deposition method, an ion plating method, a sputtering method, and a plasma CVD method.