Replaceable Semiconductor Chuck Embossment Features
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Solution Overview
Problem
Semiconductor chuck embossment features become damaged and require periodic replacement, necessitating a cost-effective method for maintenance that does not require factory refurbishment, as existing solutions involve expensive equipment and materials.
Innovation Solution
A peel-ply layer assembly is used, where features are bonded to a carrier layer and enclosed between the peel-ply and adhesive layers, allowing for easy application and removal to the chuck, enabling feature replacement without extensive refurbishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If embossment features are permanently integrated into the chuck face, then the features provide stable substrate spacing, but the features become damaged and require expensive factory refurbishment
Solution Approach 1:
The chuck system is segmented into a permanent chuck face and replaceable embossment features. The features are separated from the chuck face and can be independently replaced, allowing damaged features to be swapped without refurbishing the entire chuck. This resolves the contradiction by maintaining stable spacing through proper feature design while enabling easy replacement of damaged features.
Solution Approach 2:
The embossment features are designed as consumable components that can be discarded when damaged and recovered/replaced with new features. The features are bonded to the chuck face using adhesive, allowing them to be removed and replaced in the field without expensive factory refurbishment, thus resolving the contradiction between reliability and ease of repair.
2Stability of the object's composition
If embossment features are machined or deposited directly onto the chuck face, then the features are permanently integrated, but replacement requires expensive factory equipment and materials
Solution Approach 1:
The features are segmented from the chuck face and mounted as separate components using adhesive bonding. This allows the features to be permanently integrated during normal operation while enabling cost-effective replacement in the field using simple tools and materials, resolving the contradiction between integration stability and replacement cost.
Solution Approach 2:
The embossment features are designed as disposable or replaceable components that can be manufactured inexpensively and replaced in the field. Rather than permanently integrating expensive features into the chuck face, the invention uses affordable features that can be swapped out using simple adhesive bonding, resolving the contradiction between integration permanence and replacement cost.
3Manufacturing precision
If the chuck surface is cleaned of contamination, then the chuck maintains processing quality, but the embossment features may become damaged during cleaning
Solution Approach 1:
The embossment features are designed with sufficient height and structural robustness to withstand normal cleaning procedures. The features protrude from the chuck face by an amount that provides a cushioning effect, allowing cleaning processes to remove contamination without damaging the features, thus resolving the contradiction between processing quality and feature integrity.
Solution Approach 2:
The features are designed as replaceable components that can be swapped out if damaged during cleaning. This allows aggressive cleaning procedures to be used to maintain processing quality while accepting that occasional feature damage may occur, with damaged features simply being replaced rather than preventing thorough cleaning, thus resolving the contradiction between manufacturing precision and feature integrity.
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 method allows for efficient and cost-effective replacement of chuck embossment features, maintaining thermal uniformity and extending the life of semiconductor processing equipment without the need for expensive factory maintenance.
Implementation Method 1
The chuck face 111 may be machined (for example by milling or blasting through a mask) to provide the raised embossment features 120. Alternatively, the features 120 may be deposited on the chuck face 111 by physical vapor deposition (PVD) or by chemical vapor deposition (CVD). Alternatively, a thin capping layer of ceramic or metal containing the raised embossment features may be adhesively bonded to the chuck face 111.
Data Source
AI summary
A method for applying raised features to a semiconductor substrate chuck, each feature acting to space a substrate from the chuck in use, the method comprising the steps of:i) providing an assembly having a carrier layer, a feature adhered to the carrier layer, and a peel-ply layer adhered to the carrier layer such that the feature is enclosed between the carrier layer and the peel-ply layer,ii) removing the peel-ply layer, andiii) adhering the feature to the chuck.