Dynamic Seals for Vacuum Chamber Loading
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Solution Overview
Problem
Current semiconductor manufacturing processes require separate tools for processing and inspection, leading to inefficiencies and increased opportunities for contamination due to the need to break vacuum seals and transport substrates between chambers.
Innovation Solution
Integration of an inspection/metrology chamber into a cluster tool with dynamic seals and a load mechanism that maintains predefined conditions, allowing for rapid pumping and contamination-free substrate movement within the chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate stand-alone chambers are used for processing and inspection, then each chamber can maintain its own predefined conditions independently, but the need to transport substrates between chambers breaks vacuum seals and increases contamination opportunities
Solution Approach 1:
The patent combines multiple process chambers and an inspection chamber into a single cluster tool system, allowing substrates to be processed and inspected without breaking vacuum seals. The interconnected chambers share a common vacuum environment, eliminating the need to open seals during substrate transfer between processing and inspection stages.
Solution Approach 2:
The patent introduces a load mechanism with dynamic seals as an intermediary component that enables substrate transfer between chambers while maintaining vacuum integrity. The dynamic seal acts as a mediator that allows mechanical movement and substrate loading/unloading without compromising the vacuum barrier.
2Device complexity
If separate stand-alone chambers are used for processing and inspection, then chamber design and operation are simpler individually, but substrate transport between chambers increases process time and reduces productivity
Solution Approach 1:
The patent merges multiple chambers into an integrated cluster tool, eliminating the need for substrate transport between separate facilities. This integration allows continuous processing and inspection within a single vacuum environment, significantly reducing cycle time and improving manufacturing throughput.
Solution Approach 2:
The patent enables continuous substrate processing by eliminating vacuum breaks during transfer. The interconnected chamber design allows substrates to move continuously from processing to inspection without interrupting the vacuum state, maintaining continuous useful action and maximizing productivity.
3Object-affected harmful factors
If dynamic seals are used to maintain vacuum during substrate movement, then contamination is reduced, but the complexity of the chamber mechanism increases
Solution Approach 1:
The patent uses dynamic seals as intermediary components that enable mechanical movement while maintaining vacuum separation. These seals act as mediators between the static vacuum environment and the moving substrate, allowing controlled access without compromising contamination protection.
Solution Approach 2:
The patent employs dynamic seals that can adapt and move with the substrate loading mechanism, providing a flexible solution that maintains vacuum integrity during motion. The dynamic nature of these seals allows them to accommodate mechanical movement while preserving the vacuum barrier.
4Productivity
If chambers are integrated into a cluster tool for streamlined processing, then factory space and transport distance are reduced, but the risk of cross-contamination between process steps increases
Solution Approach 1:
The patent integrates multiple process chambers and inspection chambers into a clustered configuration within a shared vacuum environment. This merging allows substrates to transition between process steps without exposure to atmospheric contamination, eliminating the risks associated with breaking and reforming vacuum seals.
Solution Approach 2:
The patent maintains a controlled vacuum environment across all interconnected chambers, creating an inert atmosphere that prevents contamination during substrate transfer. The consistent vacuum state across the cluster tool serves as a protective barrier against environmental contaminants.
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 integration streamlines the manufacturing process by enabling efficient and contamination-free inspection and processing of semiconductor substrates within a cluster tool, reducing defects and improving manufacturing efficiency.
Implementation Method 1
Each chamber usually has an inner chamber in which predefined conditions, such as a certain vacuum level, are maintained during the process
Implementation Method 2
a load mechanism arranged to position the chamber in a load position and which is arranged to close the chamber
Data Source
AI summary
Chamber elements defining a chamber include a first element having a first surface, a second element, a first dynamic seal and load mechanism. The second element includes an outer floating element that includes a second surface about the periphery of the chamber, and an inner floating element. The second surface and the first surface are maintained proximate to each other when the chamber is in a load position and when the chamber is closed. The load mechanism may move the inner floating element from the outer floating element until a gap between the inner floating element and the second element to facilitate loading of the device to the chamber. A movement system may generate relative movement between the first element and the second element.