Fluoropolymer Packaging for Semiconductor Cleanliness
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Solution Overview
Problem
Current packaging solutions for semiconductor and microelectronic components, such as nylon and polyethylene bags, often contain surface contaminants that can lead to contamination during storage and transport, compromising cleanliness standards and device performance.
Innovation Solution
Development of fluoropolymer packaging articles, specifically made from materials like PFA, PTFE, FEP, or PVDF, which are cleaned using an organic solvent wash and acidic solution to remove contaminants, providing a more stable and clean environment for sensitive items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional packaging materials like nylon and polyethylene bags are used, then manufacturing cost is reduced, but surface contaminants and particles are generated that compromise cleanliness standards
Solution Approach 1:
The patent changes the material parameter from conventional nylon/polyethylene to fluoropolymer materials (PTFE, FEP, PFA, PVDF), which have inherently lower contaminant generation and better cleanliness properties. This material substitution resolves the contradiction by providing both low contaminant levels and acceptable manufacturing cost.
Solution Approach 2:
The patent employs single-use cleanroom bags made from fluoropolymer materials that are disposed of after one use. This disposable approach eliminates the need for repeated cleaning and sterilization, ensuring consistent cleanliness levels while maintaining economic feasibility through low-cost fluoropolymer material and simple cleaning processes.
2Adaptability or versatility
If items are shipped outside cleanroom environments, then manufacturing flexibility and logistics are improved, but contamination risk increases
Solution Approach 1:
The patent uses fluoropolymer cleanroom bags that create a protected environment for items during shipping. These bags can be sealed to maintain a clean interior atmosphere, effectively isolating sensitive items from external contaminants during transport outside controlled cleanroom environments.
Solution Approach 2:
The patent implements preliminary cleaning of fluoropolymer bags using organic solvents and acidic solutions before items are placed inside. This pre-cleaning ensures the packaging itself is free from contaminants before contact with sensitive items, establishing a clean baseline for protected shipping.
3Reliability
If cleanroom standards are maintained with traditional materials, then cleanliness is achieved, but manufacturing and maintenance costs increase
Solution Approach 1:
The patent employs single-use fluoropolymer cleanroom bags that eliminate the need for repeated cleaning, sterilization, and maintenance of reusable packaging. Each bag is used once and then disposed of, converting ongoing maintenance costs into simple disposable purchases, thereby reducing overall operational expenses while maintaining high cleanliness standards.
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 fluoropolymer packaging articles achieve significantly lower contaminant and particle counts, ensuring higher cleanliness levels and reducing the risk of contamination during storage and transport, thereby improving process yield and device performance.
Implementation Method 1
cleaned using an organic solvent wash and acidic solution to remove contaminants
Implementation Method 2
cleaned using an organic solvent wash and acidic solution to remove contaminants
Data Source
AI summary
A packing article for the storage and/or transport of items and materials requiring high levels of cleanliness is described. Methods of making and using the packaging article are also described. The packaging article may be used to store or transport, for example, advanced optical components, or materials and components used in the manufacturing of microelectronic devices or optical components. A method of making the packaging article includes contacting the packaging article with organic solvent(s) and acidic solution(s) and rinsing with ultrapure water. Interior cleanliness levels for various contaminants, such as, metals, anionic materials, organic compounds, and particles may be verified and the packaging articles may be labeled and sorted according to cleanliness level.