Semiconductor Manufacturing Line Segmentation for Conveyance Efficiency
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Solution Overview
Problem
In semiconductor manufacturing lines, the conveyance distance of workpieces is lengthened due to treatment devices not being aligned according to the process sequence, causing inefficiencies and increased production time.
Innovation Solution
A manufacturing line configuration where high-frequency treatment devices are arranged on one route and low-frequency devices on another, with changeover points allowing workpieces to be directed to the appropriate route based on treatment frequency, reducing unnecessary conveyance distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If treatment devices are arranged on a loop-like conveyance route to share devices across different processes, then the length of the manufacturing line is shortened, but the conveyance distance of workpieces is lengthened due to misalignment with process sequence
Solution Approach 1:
The patent divides the manufacturing line into multiple segments or zones based on process sequences. Treatment devices are grouped into different segments corresponding to different process stages, allowing workpieces to be conveyed efficiently within each segment while maintaining overall line compactness. This segmentation resolves the contradiction by organizing devices spatially according to process flow rather than uniformly on a loop.
Solution Approach 2:
The patent transitions from a one-dimensional loop-like conveyance route to a two-dimensional or multi-dimensional arrangement of treatment devices. By utilizing vertical space, parallel conveyance paths, or clustered device groupings, the system maintains short conveyance distances while keeping the manufacturing line compact. This dimensional change allows devices to be positioned optimally for both line length and workpiece conveyance efficiency.
2Adaptability or versatility
If treatment devices are spaced apart to accommodate loop-like conveyance routing, then device sharing across processes is enabled, but production time increases due to longer conveyance distances
Solution Approach 1:
The patent implements preliminary routing decisions that direct workpieces to the most appropriate treatment device based on process requirements. By pre-planning conveyance paths and using intelligent routing mechanisms, the system minimizes unnecessary conveyance distance while enabling device sharing. This preliminary action ensures workpieces are efficiently directed to shared devices without excessive travel time.
Solution Approach 2:
The patent introduces dynamic routing capabilities that adapt conveyance paths in real-time based on workpiece requirements, device availability, and process sequences. This dynamic adjustment allows the system to optimize conveyance distances for each workpiece while maintaining flexible device sharing across different processes, thereby reducing production time without sacrificing versatility.
3Device complexity
If a single loop-like conveyance route is used for all treatment devices, then system complexity is reduced, but conveyance efficiency deteriorates due to unnecessary travel across unused devices
Solution Approach 1:
The patent segments the conveyance route into multiple dedicated paths or zones corresponding to different process sequences. Instead of a single loop, workpieces can be conveyed through specific segments relevant to their processing stage, avoiding unnecessary travel through other segments. This segmentation maintains manageable system complexity while dramatically improving conveyance efficiency.
Solution Approach 2:
The patent applies different conveyance route characteristics to different segments of the manufacturing line. Each segment is optimized for its specific process requirements, with conveyance paths tailored to minimize travel distance for workpieces undergoing particular treatments. This local optimization improves overall productivity while keeping the total system complexity controlled through modular design.
Data Source
AI summary
A manufacturing line for a semiconductor device according to the invention is a manufacturing line for manufacturing a semiconductor device by circulating a workpiece along a conveyance route on which a plurality of treatment devices are arranged. The conveyance route includes a first route on which the treatment devices with a large number of times of treatment are arranged, and a second route on which the treatment devices with a small number of times of treatment are arranged. Besides, the conveyance route makes a changeover between the conveyance of the workpiece that has moved along the first route to the first route in a continuous manner, and the conveyance of the workpiece that has moved along the first route to the second route.