Modular Rotary Chuck Pin Assemblies for Wafer Processing
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Solution Overview
Problem
The repair and maintenance of semiconductor wafer chucks, especially those with heating assemblies, are complex and time-consuming due to the need for disassembly and removal from their drive and process modules, requiring extensive clean room procedures.
Innovation Solution
A rotary chuck design with interengageable connectors, such as snap-fit or twist-and-lock elements, allows for easy connection and disconnection of pin assemblies without tools, enabling replacement of worn or broken pins without disassembling the chuck, and incorporates a heating assembly positioned above the pin contact level to facilitate efficient maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the chuck is equipped with heating assemblies and pin assemblies, then the processing capability is improved, but the maintenance complexity increases significantly
Solution Approach 1:
The pin assembly is divided into separate modular components including the pin body, gripping element, and drive mechanism. Each component can be independently replaced without affecting other parts of the chuck system, significantly reducing maintenance complexity while preserving full processing capability.
Solution Approach 2:
The pin assemblies are designed with movable and adjustable components that can be dynamically reconfigured or replaced. The drive mechanisms allow pins to be rotated and positioned dynamically, and the modular design enables dynamic replacement during maintenance without requiring complete chuck disassembly.
2Stability of the object's composition
If the pin assemblies are integrated into the chuck structure, then the structural stability is improved, but the ease of repair deteriorates
Solution Approach 1:
The pin assembly is segmented into modular components that maintain stable structural integration during operation but can be easily separated for repair. The standardized interfaces ensure structural stability when assembled while enabling quick disassembly and replacement during maintenance.
Solution Approach 2:
The pin components are nested within the chuck structure with standardized interfaces that provide stable integration during operation. The nested design allows components to be easily extracted and replaced while maintaining structural integrity, bridging the gap between structural stability and ease of repair.
3Productivity
If the heating assembly is positioned below the wafer contact level, then the thermal processing efficiency is improved, but the maintenance time increases
Solution Approach 1:
The heating assembly is segmented into modular sections with standardized interfaces, allowing individual heating elements or sections to be replaced independently. This modular design maintains thermal processing efficiency during operation while significantly reducing maintenance time by enabling targeted replacement without complete disassembly.
Solution Approach 2:
The heating assembly is designed with pre-positioned access points and standardized interfaces that facilitate preliminary preparation for maintenance. Components can be pre-assembled or pre-tested outside the clean room environment, reducing the actual maintenance time required when replacement is needed while preserving thermal processing efficiency.
4Reliability
If the chuck requires complete disassembly for pin replacement, then the connection reliability is improved, but the maintenance complexity increases
Solution Approach 1:
The pin assembly connection system is segmented into standardized modular interfaces that provide reliable connections during operation. The standardized interfaces ensure consistent connection reliability while enabling simple snap-fit or tool-free removal for maintenance, eliminating the need for complete chuck disassembly.
Solution Approach 2:
The pin assemblies are designed as replaceable components with standardized interfaces that ensure reliable connections during their service life. When worn or damaged, entire pin assemblies can be quickly replaced as disposable units rather than attempting complex repairs, maintaining connection reliability while simplifying maintenance procedures.
Data Source
AI summary
An apparatus for processing wafer-shaped articles comprises a rotary chuck adapted to hold a wafer shaped article thereon. The rotary chuck comprises a peripheral series of pins configured to contact an edge region of a wafer-shaped article. Each of the pins projects from the rotary chuck, and each of the pins comprises a projecting portion having a gripping element at a distal end thereof, and a proximal portion comprising a drive mechanism at a proximal end thereof by which the pin can be rotated. The projecting portion and the proximal portion comprise interengageable connectors configured to allow the projecting and proximal portions to be interconnected by pressing the projecting portion against the proximal portion and to be disconnected by pulling the projecting portion away from the proximal portion.