Dual-Robot Substrate Transfer Layout for Faster Cleaning Throughput
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Solution Overview
Problem
Existing substrate treatment apparatuses face inefficiencies due to a single main transfer robot handling all transfers between buffer units, inversion units, and cleaning chambers, leading to prolonged waiting times and reduced transfer efficiency.
Innovation Solution
The apparatus is designed with a dual main transfer robot system, allowing direct transfers between buffer units and cleaning chambers, and includes a controller to manage substrate orientation for efficient cleaning of both patterned and non-patterned surfaces, with stacked cleaning chambers and inversion units for improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single main transfer robot is used to handle all transfers between buffer units, inversion units, and cleaning chambers, then the device complexity is reduced, but the transfer efficiency and productivity deteriorate due to prolonged waiting times
Solution Approach 1:
The patent divides the transfer function into two independent main transfer robots: one dedicated to transferring substrates between buffer units and inversion units, and another dedicated to transfers between inversion units and cleaning chambers. This segmentation eliminates the bottleneck of a single robot handling all transfers, thereby improving transfer efficiency and reducing waiting times while maintaining manageable system complexity through functional specialization.
2Device complexity
If a single main transfer robot handles all transfers, then the device complexity is simplified, but the waiting time of substrates in units or chambers increases
Solution Approach 1:
The patent segments the transfer operations into two parallel workflows handled by separate main transfer robots. The first robot manages buffer-to-inversion transfers while the second manages inversion-to-cleaning transfers simultaneously. This parallel execution eliminates sequential waiting, significantly reducing substrate waiting time without substantially increasing overall system complexity.
Solution Approach 2:
The patent implements preliminary positioning and preparation of substrates in buffer units before transfer to inversion units. The first main transfer robot completes buffer-to-inversion transfers in advance, allowing the second robot to simultaneously prepare for and execute inversion-to-cleaning transfers. This preliminary action ensures continuous workflow and minimizes idle waiting time for substrates.
Data Source
AI summary
An apparatus for treating a substrate of the present invention includes a buffer unit, an inversion unit, a first transfer chamber, a second transfer chamber, a first cleaning chamber, and a second cleaning chamber. The first transfer chamber, the inversion unit, and the second transfer chamber are sequentially arranged in one direction. The first cleaning chamber is disposed at one side of the first transfer chamber, and the second cleaning chamber is disposed at one side of the second transfer chamber. A first main transfer robot provided in the first transfer chamber directly transfers the substrate between the buffer unit, the inversion unit, and the first cleaning chamber. The second main transfer robot provided in the second transfer chamber directly transfers the substrate between the buffer unit, the inversion unit, and the second cleaning chamber.