Substrate Processing Apparatus Parallel Cleaning Lines
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Solution Overview
Problem
Conventional substrate processing apparatuses face challenges in achieving high throughput due to single cleaning lines, complex transfer mechanisms, and delayed maintenance, leading to increased costs and reduced efficiency in polishing and cleaning semiconductor wafers.
Innovation Solution
The apparatus features multiple cleaning lines with a sorting mechanism for parallel processing, a simplified transfer mechanism with simultaneous horizontal and vertical movement, and a top ring assembly with a pressure adjuster integrated on the top ring head for rapid pressure control, enabling efficient cleaning and drying of multiple substrates while reducing downtime through easier maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single cleaning line is provided in the substrate processing apparatus, then the device complexity is reduced, but the productivity decreases because multiple polished wafers cannot be cleaned and dried simultaneously
Solution Approach 1:
The cleaning section is divided into multiple independent cleaning lines (first cleaning line and second cleaning line), each capable of processing substrates simultaneously. This segmentation allows parallel processing of multiple wafers, increasing throughput without requiring a single complex cleaning system
2Reliability
If a complex transfer mechanism is used to transfer substrates between polishing units, then the reliability of substrate transfer is improved, but the device complexity increases and maintenance becomes more difficult
Solution Approach 1:
The transfer mechanism integrates horizontal movement (via linear transporters) and vertical movement (via pushers) into a coordinated system that operates automatically. By merging these functions into a unified transfer mechanism with centralized control, the system achieves reliable substrate transfer between polishing units while maintaining manageable complexity through integrated design
3Ease of operation
If the pressure adjuster is positioned away from the top ring, then the ease of operation is improved, but the speed of pressure response decreases affecting polishing efficiency
Solution Approach 1:
A flexible hose connects the pressure adjuster to the top ring, serving as an intermediary that transmits pressurized air from the remotely positioned adjuster to the top ring. This allows the pressure adjuster to be located away from the top ring for ease of operation while maintaining rapid pressure response through the flexible connection that accommodates movement and positioning
Data Source
AI summary
An apparatus for processing a substrate is disclosed. The apparatus includes a polishing section configured to polish a substrate, a transfer mechanism configured to transfer the substrate, and a cleaning section configured to clean and dry the polished substrate. The cleaning section has plural cleaning lines for cleaning plural substrates. The plural cleaning lines have plural cleaning modules and plural transfer robots for transferring the substrates.