Substrate Transfer Interface for Parallel Batch and Single-Wafer Processing
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Solution Overview
Problem
Existing substrate processing systems face inefficiencies in integrating batch and single-wafer processing, leading to increased system size and reduced productivity due to overlapping operations and substrate handling complexities.
Innovation Solution
A substrate processing system with a carry-in/out unit, batch processing unit, single-wafer processing unit, and interface units that facilitate parallel processing of substrates, allowing for efficient distribution and transfer between batch and single-wafer operations, reducing system footprint and improving throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If batch processing unit and single-wafer processing unit are integrated in existing substrate processing systems, then both batch and single-wafer processing capabilities are provided, but system size increases and productivity decreases due to overlapping operations and substrate handling complexities
Solution Approach 1:
The system is divided into distinct functional modules: batch processing unit (400) for processing multiple substrates simultaneously, single-wafer processing unit (600) for processing individual substrates, and interface units (300, 500) for substrate transfer. This segmentation allows each unit to operate independently without overlapping operations, eliminating the productivity degradation seen in integrated systems while maintaining both batch and single-wafer processing capabilities.
Solution Approach 2:
Interface units (300, 500) serve as intermediary components between the batch processing unit and single-wafer processing unit. These interface units manage substrate transfer and distribution, coordinating operations between the two processing modes. The intermediary interface units prevent direct conflict and overlapping operations, enabling both batch and single-wafer processing to occur efficiently without reducing overall productivity.
2Adaptability or versatility
If batch processing unit and single-wafer processing unit are integrated in existing substrate processing systems, then both batch and single-wafer processing capabilities are provided, but system size increases
Solution Approach 1:
By segmenting the system into separate batch processing unit (400), single-wafer processing unit (600), and interface units (300, 500), the patent enables modular configuration that optimizes space utilization. Each segmented unit can be compactly designed for its specific function, and the overall system footprint is reduced compared to traditional integrated designs that require redundant components and larger transfer mechanisms.
3Adaptability or versatility
If substrates are transferred between batch processing unit and single-wafer processing unit in existing systems, then processing flexibility is maintained, but unnecessary transportation increases and processing efficiency decreases
Solution Approach 1:
The interface units (300, 500) act as intelligent intermediaries that optimize substrate transfer between batch and single-wafer processing units. They manage the distribution and transfer operations to minimize unnecessary transportation, directing substrates through the most efficient path based on processing requirements. This intermediary management reduces idle transfer time and maintains processing flexibility without the time loss associated with redundant transportation in traditional integrated systems.
Data Source
AI summary
A substrate processing system includes a carry-in/out unit in which a cassette accommodating therein multiple substrates is carried in and out; a batch processing unit configured to process a lot including the multiple substrates at once; a single-wafer processing unit configured to process the substrates one by one; a first interface unit configured to distribute the substrates to the single-wafer processing unit or the batch processing unit; and a second interface unit configured to transfer the substrates between the batch processing unit and the single-wafer processing unit. The first interface unit includes a first placement unit configured to place therein the substrates before and after being processed by the single-wafer processing unit; a second placement unit configured to place therein the substrates before being processed by the batch processing unit; and a transfer device configured to transfer the substrates to the first placement unit and the second placement unit.