Siloxane Photodegradable Coupling Agent for Fluorine-Free Pattern Formation
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Solution Overview
Problem
Current methods for forming patterns on substrates for fine devices, such as semiconductor elements and organic EL displays, rely on fluorine-containing compounds for creating hydrophilic and water-repellent regions, which raises environmental concerns due to fluorine residue, and lack effective alternatives.
Innovation Solution
A siloxane-based compound that changes its surface properties from water-repellent to hydrophilic upon light irradiation, allowing for the formation of hydrophilic and water-repellent regions without fluorine, enabling pattern formation and electroless plating processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fluorine-containing compounds are used to form hydrophilic and water-repellent regions, then pattern formation capability is improved, but environmental harm increases due to fluorine residue
Solution Approach 1:
The invention changes the chemical composition parameter of the coupling agent from fluorine-containing to siloxane-based compounds. The siloxane compound contains a photodegradable group that undergoes structural change upon light irradiation, transforming the surface from water-repellent to hydrophilic. This parameter change eliminates fluorine residue while maintaining the ability to form patterns through controlled hydrophilic region creation.
Solution Approach 2:
The invention applies local quality by creating spatially differentiated regions on the substrate surface. Through selective light irradiation, only specific regions undergo photodegradation of the siloxane coupling agent, forming localized hydrophilic regions while other areas remain water-repellent. This local differentiation enables precise pattern formation without requiring fluorine-containing materials throughout the entire surface.
2Object-generated harmful factors
If siloxane-based photodegradable coupling agents are used instead of fluorine-containing compounds, then environmental compatibility is improved, but the ability to form distinct hydrophilic regions may be compromised
Solution Approach 1:
The invention introduces dynamic responsiveness through the photodegradable group in the siloxane coupling agent. The surface properties are not static but can be dynamically changed from water-repellent to hydrophilic upon light irradiation. This dynamic characteristic allows the siloxane-based agent to achieve the same functional effect as fluorine-containing compounds, enabling reliable hydrophilic region formation while maintaining environmental compatibility.
Solution Approach 2:
The invention substitutes the chemical mechanism of fluorine-containing compounds with a photochemical mechanism using siloxane-based compounds. Instead of relying on fluorine's inherent water-repellent properties, the invention uses light-triggered photodegradation to transform siloxane from water-repellent to hydrophilic. This mechanism substitution maintains manufacturing precision while improving environmental compatibility by eliminating fluorine residue.
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 compound effectively transforms surface properties in response to light, facilitating the formation of precise patterns and electroless plating without the environmental drawbacks of fluorine, enhancing the production of fine devices like semiconductor elements and organic EL displays.
Implementation Method 1
a siloxane-based compound that changes its surface properties from water-repellent to hydrophilic upon light irradiation
Data Source
AI summary
A compound represented by Formula (1). [In the formula, X represents a halogen atom or an alkoxy group, R1 represents any one group selected from an alkyl group having 1 to 5 carbon atoms, a group represented by Formula (R2-1), and a group represented by Formula (R2-2), R2 represents a group represented by Formula (R2-1) or (R2-2), n0 represents an integer of 0 or greater, n1 represents an integer of 0 to 5, and n2 represents a natural number of 1 to 5.]