Shutter Disk Assembly Detection in Process Chambers
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Solution Overview
Problem
In semiconductor manufacturing, the lack of effective detection methods for shutter disk assemblies in process chambers can lead to catastrophic failures due to improper positioning or storage, resulting in process chamber damage and downtime.
Innovation Solution
A method and apparatus utilizing multiple sensors positioned in the shutter housing to detect the operational status of the shutter disk assembly, including the shutter arm and disk, and interacting with a process controller to alter processes as necessary, such as calibration, repositioning, or halting the process, to prevent damage and ensure correct storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are positioned in the shutter housing to detect shutter arm and disk positions, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into multiple independent sensors (first sensor for shutter arm position, second and third sensors for shutter disk position) distributed in the shutter housing. Each sensor independently monitors a specific aspect of the shutter disk assembly, enabling comprehensive detection accuracy while maintaining modular simplicity in each sensor unit.
2Reliability
If real-time monitoring with multiple sensors is implemented, then reliability is improved, but use of energy increases
Solution Approach 1:
The system implements feedback control where sensor detections are continuously fed to the process controller, which automatically adjusts processes based on the operational status of the shutter disk assembly. This feedback mechanism ensures high reliability through real-time monitoring while optimizing energy consumption by only activating full monitoring and control when anomalies are detected or during critical process phases.
3Productivity
If automated detection and response systems are implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The system enables self-service operation where the process controller automatically detects operational status through sensor inputs and autonomously alters processes without requiring manual intervention. The shutter disk assembly monitoring system serves itself by automatically triggering calibration, repositioning, or process halting based on sensor detections, thereby improving productivity while keeping the automation logic contained within the existing controller software.
Data Source
AI summary
Methods and apparatus for detecting a shutter disk assembly in a process chamber using a number of sensors. A first, second, and third sensor in a shutter housing for a shutter disk assembly provide indications of a status of the shutter disk assembly. The indications are used in part to determine the operational status of the shutter disk assembly along with process information from a process controller. The operational status is then used to alter a process of the process chamber when necessary.