Substrate Transfer Controller Dynamic Interval Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional substrate processing systems face challenges in maintaining consistent processing results due to varying processing times across modules, leading to substrate stagnation and uneven process outcomes, while attempting to optimize transfer efficiency and throughput.
Innovation Solution
A substrate processing system with a controller that sets and adjusts intervals for unloading substrates based on the longest processing time among modules, using a transfer unit and controller to manage substrate flow and prevent stagnation by extending intervals as needed, and allowing immediate adjustments to maintain throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If substrates are sequentially and serially transferred to processing modules to maintain consistent processing, then manufacturing precision is improved, but productivity deteriorates due to substrate stagnation and extended processing intervals
Solution Approach 1:
The system dynamically adjusts the interval timing for unloading substrates from the carrying-in/out unit based on real-time processing status. When a processing module completes its operation earlier than the predetermined interval, the system extends the interval to maintain consistent processing conditions. This dynamic adjustment prevents substrate stagnation while ensuring manufacturing precision, resolving the contradiction between consistent processing and productivity.
2Manufacturing precision
If the interval for unloading substrates is extended to prevent substrate stagnation, then manufacturing precision is improved, but productivity deteriorates due to reduced transfer frequency
Solution Approach 1:
The control unit receives feedback signals from processing modules indicating when substrate processing is complete. Based on this feedback, the system intelligently extends the unloading interval only when necessary to prevent substrate stagnation, rather than using a fixed extended interval. This feedback mechanism allows the system to maintain manufacturing precision while minimizing the impact on productivity by adjusting intervals based on actual processing needs.
3Productivity
If substrates are transferred immediately after processing completion to maximize throughput, then productivity is improved, but manufacturing precision deteriorates due to substrate stagnation and uneven processing intervals
Solution Approach 1:
The system establishes a predetermined interval for unloading substrates before processing begins. This preliminary timing arrangement ensures that substrates are unloaded at consistent intervals, preventing stagnation and maintaining processing consistency. The system prepares the unloading schedule in advance, allowing immediate transfer after processing while maintaining manufacturing precision through pre-planned interval management.
Data Source
AI summary
A substrate processing system includes a processing section that includes a plurality of process modules each of which performs a predetermined processing; a carrying-in/out section that holds the plurality of substrates, and carries the substrates into/out of the processing section; a transfer unit that transfers the substrates; and a controller that controls the processing section, the carrying-in/out section, and the transfer unit. The controller performs a control such that the plurality of substrates is sequentially transferred from the carrying-in/out section to the processing section, and the transferred substrates are sequentially and serially transferred to the plurality of process modules, sets an interval until a next substrate is unloaded after a substrate is unloaded from a predetermined module of the carrying-in/out section, and performs a control such that the plurality of substrates is sequentially unloaded from the predetermined module with a setting value of the interval.