Linear Transfer Chamber Layout for Compact Wafer Processing
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Solution Overview
Problem
Existing semiconductor processing systems have a large footprint, leading to increased space requirements and reduced throughput, and suffer from limited process integration flexibility, particularly in cluster-style tools and carousel-style tools.
Innovation Solution
A processing system with a transfer chamber and multiple process chambers arranged in a linear configuration, utilizing a workpiece handling robot that can transfer workpieces using a scissor motion to multiple processing stations, allowing for efficient transfer and processing of multiple workpieces without vacuum or process pressure breaks, enabling flexible integration of various processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cluster-style tools are used to process workpieces, then multiple process chambers can be integrated, but the footprint size increases and space efficiency decreases
Solution Approach 1:
The patent transitions from traditional two-dimensional cluster tool layouts to a three-dimensional configuration by stacking process chambers vertically. Multiple process chambers are arranged in a vertical column rather than spreading horizontally, allowing the system to maintain high process integration capability while significantly reducing the horizontal footprint. The robot arm operates in a vertical workspace to transfer workpieces between stacked chambers.
2Productivity
If more process chambers are added to increase throughput, then processing capacity improves, but the system footprint and space requirements increase
Solution Approach 1:
The system achieves increased throughput by adding process chambers in the vertical dimension rather than expanding horizontally. Multiple process chambers are stacked one above another, creating a vertical processing column that maintains high productivity while minimizing the horizontal space occupied by the tool.
3Area of stationary object
If carousel-style tools are used to reduce footprint, then space efficiency improves, but process integration flexibility is reduced
Solution Approach 1:
The patent employs a dynamic, modular process chamber design where chambers can be independently configured and accessed. Unlike fixed carousel configurations, the vertical stack allows flexible routing of workpieces through different chamber sequences, enabling dynamic process integration that can be adapted to various processing requirements while maintaining a compact footprint.
Data Source
AI summary
A processing system for processing a plurality of workpieces includes a transfer chamber in process flow communication with a first processing chamber and a second processing chamber, the transfer chamber having a first straight side, wherein the first process chamber includes at least one first processing station, and wherein the first processing chamber is disposed along the first straight side, wherein the second process chamber includes at least two second processing stations, wherein the second processing chamber is disposed along the first straight side, and wherein the second process chamber disposed in linear arrangement with the first process chamber along the first straight side, and wherein the transfer chamber includes at least one workpiece handling robot configured to transfer at least one workpiece to the at least one first processing station and the at least two second processing stations.