Semiconductor Equipment Trace Elements for Defect Source Identification
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Solution Overview
Problem
Current semiconductor manufacturing equipment defect tracing methods are inefficient, as elemental analysis often fails to accurately identify defect sources due to similar material compositions among components, leading to time-consuming disassembly and physical examination.
Innovation Solution
Incorporating rare earth elements (REEs) as trace elements in components of semiconductor manufacturing equipment, allowing for improved detection accuracy and faster identification of defect sources by unique elemental signatures in shed particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional elemental analysis is used for defect tracing, then the equipment structure remains simple, but the measurement precision and ability to identify defect sources accurately deteriorates
Solution Approach 1:
The patent applies local quality by incorporating specific rare earth elements into particular components of the semiconductor manufacturing equipment. Each component contains a unique combination or type of rare earth element, creating localized elemental signatures that enable precise identification of defect sources. This allows the system to maintain relatively simple overall structure while achieving high measurement precision through localized differentiation.
2Measurement precision
If physical examination of components is performed to identify defects, then measurement precision improves, but loss of time increases due to time-consuming disassembly
Solution Approach 1:
The patent implements preliminary action by pre-incorporating rare earth elements into equipment components during manufacturing. These elements serve as built-in traceability markers that are already in place before defects occur. When defects happen, the preliminary elemental signatures enable rapid identification without requiring time-consuming disassembly or physical examination, thus reducing downtime while maintaining high detection accuracy.
Solution Approach 2:
The patent replaces the mechanical system of physical disassembly and visual inspection with a chemical/elemental analysis system. By using rare earth elements as trace markers, the defect identification process shifts from mechanical examination to elemental composition analysis, which can be performed more rapidly and with higher precision, thereby reducing both time loss and maintaining measurement precision.
3Ease of manufacture
If components use similar material compositions, then ease of manufacture improves, but difficulty of detecting and measuring defect sources worsens
Solution Approach 1:
The patent resolves this contradiction by applying local quality through selective incorporation of rare earth elements into specific components. While the base material composition can remain similar and easy to manufacture, the addition of localized rare earth element signatures creates distinguishable elemental fingerprints. This allows components to be manufactured with relatively simple, standardized materials while still enabling easy detection and measurement of defect sources through their unique elemental compositions.
Data Source
AI summary
A semiconductor manufacturing equipment comprising trace elements and method of manufacture are disclosed. The semiconductor manufacturing equipment includes one or more components, wherein at least one component is made from an alloy comprising one or more materials and one or more rare earth elements (REEs). The alloy comprises predetermined quantities of the respective REEs. The method for manufacturing a component includes forming an alloy comprising at least one material and one or more selected rare earth elements (REEs) and building the component with the alloy.