Fluorine Acid Amplifier Storage Stability via Solution Dissolution
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Solution Overview
Problem
Fluorine-containing acid amplifiers used in photolithography are prone to decomposition during storage, especially when in solid form, which affects their stability and performance in forming finer photoresist patterns.
Innovation Solution
Dissolving the fluorine-containing acid amplifier in a specified organic solvent to create a solution, which improves storage stability by preventing decomposition and maintaining the acid amplifier's effectiveness over a long period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluorine-containing acid amplifier is stored in solid form, then it can be easily handled and stored, but it decomposes during storage even in cool, dry, dark places
Solution Approach 1:
The patent applies parameter changes by transitioning the fluorine-containing acid amplifier from solid form to solution form. This fundamental state change resolves the contradiction: the solution form prevents decomposition during storage (improving reliability) while remaining easy to handle and apply in photolithography processes (maintaining ease of operation). The solvent system enables stable storage without requiring special cool, dry, dark conditions.
2Manufacturing precision
If fluorine-containing acid amplifier is used to form finer photoresist patterns, then patterning precision is improved, but storage stability deteriorates due to chainlike decomposition
Solution Approach 1:
The patent resolves this contradiction by changing the physical state parameter from solid to solution. The fluorine-containing acid amplifier in solution form maintains its ability to form finer photoresist patterns (preserving manufacturing precision) while simultaneously preventing the chainlike decomposition that occurs in solid form (improving storage stability).
Solution Approach 2:
The patent introduces a solvent as an intermediary substance. This solvent mediates between the fluorine-containing acid amplifier molecules, preventing their direct interaction that would lead to chainlike decomposition. The solvent stabilizes the amplifier during storage while allowing it to function effectively when applied to photoresist patterns.
3Reliability
If fluorine-containing acid amplifier is stabilized by dissolution in organic solvent, then storage stability is improved, but device complexity increases due to solution preparation
Solution Approach 1:
The patent applies parameter changes by optimizing the solution concentration to 1-50 mass%. This optimized concentration range achieves excellent storage stability while simplifying the solution preparation process. The specific concentration range ensures sufficient stability without requiring overly complex preparation procedures, thus resolving the contradiction between reliability improvement and device complexity.
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 method of dissolving the fluorine-containing acid amplifier in an organic solvent significantly enhances its storage stability, ensuring the acid amplifier remains effective for extended periods, even at various temperatures, thus supporting the production of finer photoresist patterns.
Implementation Method 1
dissolving a fluorine-containing acid amplifier in an organic solvent thereby producing a solution of the fluorine-containing acid amplifier
Data Source
AI summary
A method of stabilizing a fluorine-containing acid amplifier. The method is provided to include the step of dissolving a fluorine-containing acid amplifier in an organic solvent thereby producing a solution of the fluorine-containing acid amplifier, the fluorine-containing acid amplifier being represented by general formula (1):