RFID Process Kit Enclosure With Orientation Verification Windows
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Solution Overview
Problem
Substrate processing systems face challenges in maintaining cleanliness and efficiency due to the need for frequent re-commissioning and contamination when replacing worn process kit rings and handling substrates, which results in decreased yield, increased energy usage, and operator time.
Innovation Solution
An enclosure system with removably attachable walls and shelves, an RFID holder, and orientation verification windows that allows for the storage and transport of process kit rings and substrates without opening the sealed environment, enabling orientation verification and adjustment, and electronic inventory management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If process kit rings are replaced frequently to maintain substrate processing quality, then substrate yield is improved, but contamination and re-commissioning time increase
Solution Approach 1:
The system separates the process kit ring replacement operation from the sealed enclosure environment. The enclosure can be opened only for shelf insertion/removal, while process kit rings are replaced on shelves outside the sealed chamber, preventing contamination during frequent replacements.
Solution Approach 2:
Shelves act as intermediaries that transfer process kit rings between the sealed enclosure and external processing areas. This allows frequent kit ring changes without breaching the sealed environment, as shelves can be loaded and unloaded without opening the enclosure.
2Object-affected harmful factors
If the enclosure system remains sealed to prevent contamination, then cleanliness is improved, but orientation verification and replacement operations become difficult
Solution Approach 1:
Orientation verification windows are pre-positioned on the enclosure walls at strategic locations. These windows allow orientation checking to be performed before opening the enclosure, enabling operators to verify substrate or process kit ring orientation without breaching the sealed environment.
Solution Approach 2:
The system replaces physical opening of the enclosure with optical verification through windows. Instead of mechanically opening the sealed environment to check orientation, operators use visual verification through the windows, maintaining the seal while enabling operation.
3Loss of information
If traditional separate cataloguing methods are used for inventory management, then tracking is achieved, but time and operational complexity increase
Solution Approach 1:
The RFID system enables automatic inventory tracking without manual intervention. RFID tags on shelves, process kit rings, and substrates are automatically read and tracked by readers positioned within the enclosure, eliminating the need for manual cataloguing operations and reducing time loss.
Solution Approach 2:
Manual cataloguing operations are replaced with electronic RFID tracking. Instead of physically recording inventory information, the system uses electromagnetic fields to automatically detect and track the presence and location of tagged items, dramatically reducing operational time.
4Ease of repair
If frequent enclosure opening is performed for maintenance and replacement, then component replacement is enabled, but energy consumption and operator time increase
Solution Approach 1:
The system segments maintenance operations into two parts: shelf insertion/removal which requires brief enclosure opening, and process kit ring replacement which occurs externally on removed shelves. This minimizes the duration and frequency of sealed environment breaches, reducing energy consumption.
Solution Approach 2:
The shelves are designed to be dynamically removable and reinsertable without complex tooling or prolonged enclosure opening. This dynamic design allows rapid maintenance operations that minimize energy loss from enclosure opening while still enabling complete component replacement.
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 solution reduces contamination, increases yield, and minimizes energy and operator time by allowing for in-place replacement of process kit rings and precise orientation verification, while maintaining a sealed environment and reducing the need for separate cataloguing.
Implementation Method 1
a radio-frequency identification (RFID) holder coupled to a rear wall. The RFID holder is configured to secure an RFID component
Data Source
AI summary
An enclosure system includes walls including sidewalls and a bottom wall. The enclosure system further includes an enclosure lid configured to removably attach to one or more of the sidewalls. The walls and the enclosure lid at least partially enclose an interior volume of the enclosure system. The enclosure system further includes an upper window disposed in the enclosure lid. The upper window is configured for orientation verification of objects disposed in the interior volume. The enclosure system further includes a radio-frequency identification (RFID) holder coupled to a rear wall. The RFID holder is configured to secure an RFID component. The enclosure system further includes shelves disposed in the interior volume. Each of the shelves is configured to support a corresponding object of the objects.