FTIR Gas Leakage Detection Network for Semiconductor Manufacturing
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Solution Overview
Problem
Current gas detection systems in semiconductor manufacturing often produce false alarms, leading to unnecessary costs and inefficiencies in identifying and managing gas leakage sources.
Innovation Solution
A system integrating an open-path FTIR gas detection system, a multi-port extractive FTIR gas detection system, an IR monitor system, and a process exhaust management system, which uses Fourier transform infrared spectrometry and communication networks to accurately detect and analyze gas compositions, triggering alarms and automatic analyses only when hazardous thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple gas detectors are used to monitor gas leakage, then gas leakage detection capability is improved, but false alarms increase causing unnecessary cost loss
Solution Approach 1:
The patent combines multiple gas detection systems (open-path FTIR and multi-port extractive FTIR) into a unified detection network that shares data and analysis capabilities. This merging allows the system to maintain high detection reliability while reducing false alarms through cross-validation and centralized processing of gas composition data across multiple locations.
Solution Approach 2:
The system implements feedback mechanisms where gas composition data from multiple detectors is continuously analyzed and fed back into the monitoring system. The process exhaust management system uses this feedback to distinguish between actual leakage conditions and false alarm scenarios, adjusting detection thresholds and alerting protocols to reduce unnecessary cost loss while maintaining reliable detection.
2Measurement precision
If gas detectors alarm under all gas leakage conditions, then detection sensitivity is improved, but false alarms occur causing unnecessary cost loss
Solution Approach 1:
The patent applies local quality by deploying FTIR detection systems at specific strategic locations within the semiconductor manufacturing facility. Each detector is positioned to monitor specific process areas, and the system analyzes gas composition data locally before triggering alarms. This localized approach maintains high detection sensitivity for actual leaks while reducing false alarms by considering local process conditions and gas composition patterns.
Solution Approach 2:
The system dynamically adjusts detection parameters and alarm thresholds based on real-time gas composition analysis. The process exhaust management system modifies detection sensitivity parameters according to the specific gas types, concentrations, and process conditions detected, allowing the system to maintain high measurement precision for hazardous gases while adapting thresholds to reduce false alarms in normal operational variations.
3Loss of information
If a comprehensive gas detection system is implemented, then gas leakage source identification is improved, but system complexity increases
Solution Approach 1:
The patent segments the gas detection system into distinct functional modules: open-path FTIR detectors for general area monitoring, multi-port extractive FTIR systems for localized sampling, and a centralized process exhaust management system for data analysis. This segmentation allows each component to perform its specific function efficiently while the modular architecture manages overall system complexity through standardized interfaces and distributed processing.
Solution Approach 2:
The process exhaust management system serves as an intermediary layer between the detection hardware and the decision-making processes. It collects, processes, and analyzes data from multiple FTIR systems, filtering and interpreting gas composition information to identify leakage sources. This intermediary function simplifies the overall system architecture by centralizing intelligence and reducing the complexity burden on individual detection devices.
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
This system rapidly detects gas leakage sources, minimizing false alarms and enabling quick recovery from abnormal conditions by providing precise location and timing of leaks, thus reducing personnel and property loss.
Implementation Method 1
an open-path FTIR gas detection system, located before the return filter of recirculating air of the factory, detects gas composition of recirculating air
Implementation Method 2
The multi-port extractive FTIR system, located in the factory, collects and detects gas sample of local area air using pipelines located in different areas
Data Source
AI summary
A system for detection of gas leakage sources. An open-path FTIR detection system is located before the return filter of recirculating air of a factory to detect gas composition of recirculating air and transmits the result to a data server through a communication network. A multi-port extractive FTIR system is located in the factory to collect and detect gas sample of local area air using pipelines located in different areas and transmits the result of gas composition to the data server through the communication network. An IR monitor system obtains the gas composition from the data server through the communication network. A process exhaust management system obtains the gas composition from the IR monitor system through the communication network for the analysis of a gas leakage source.