Fluorine-Silicon Coating for Touch Screen Durability
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Solution Overview
Problem
Functional layers on touch screen panels in portable devices, such as smartphones and tablets, have weak durability and are prone to damage from frequent contact, leading to rapid loss of function.
Innovation Solution
A surface coating material comprising fluorine-containing silicon compounds with a fluorine-containing (poly)ether moiety, a hydrolysable silane moiety, and a linking group that forms non-covalent interactions, such as hydrogen bonds or ionic bonds, to enhance durability and prevent damage from friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a functional layer is applied on the surface of a display panel to improve surface slipping property and sense of touch, then the user experience is improved, but the durability is weak and the function is rapidly lost due to frequent contact
Solution Approach 1:
The patent uses fluorine-containing silicon compounds that combine fluorine atoms (for low surface energy and slipping property) with silicon atoms (for durability and adhesion). This composite molecular structure allows the coating to simultaneously achieve both ease of operation and reliability, resolving the contradiction between surface slipping property and durability
Solution Approach 2:
The patent modifies the chemical composition parameters of the coating material by incorporating fluorine-containing groups and silicon-based crosslinking structures. This changes the surface energy parameters and molecular bonding strength, enabling the coating to maintain both low friction characteristics and high durability under frequent contact
2Illumination intensity
If the functional layer is made thinner to maintain transparency, then the optical properties are improved, but the durability and resistance to wear is reduced
Solution Approach 1:
The patent creates a thin film coating using fluorine-containing silicon compounds that forms a transparent protective layer on the display panel. The molecular structure of the compound allows it to form a sufficiently thin yet durable film that maintains optical transparency while providing wear resistance
Solution Approach 2:
The fluorine-containing silicon compound acts as a composite material at molecular level, where fluorine provides low surface energy and transparency, while silicon provides structural strength and wear resistance. This composite structure enables the thin coating to simultaneously achieve transparency and durability
Data Source
AI summary
Disclosed are a surface coating material, a film formed from the surface coating material, a stacked structure the film, and a display device including the film and/or stacked structure. The surface coating material may include a plurality of fluorine-containing silicon compounds, wherein each of fluorine-containing silicon compounds may include a fluorine-containing (poly)ether moiety, a hydrolysable silane moiety, and a linking group between the fluorine-containing (poly)ether moiety and the hydrolysable silane moiety. The linking group may be configured to form a non-covalent interaction between adjacent molecules.