Parallel Substrate Processing Lines With a Single-Arm Retransfer Robot
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing semiconductor manufacturing processes face challenges in efficiently smoothing insulators and reducing substrate transfer times, leading to difficulties in forming additional metal layers and parallel processing of substrates.
Innovation Solution
A substrate processing system is designed to perform transfers and polishing on multiple substrates in parallel, utilizing a front-end module, multiple processing lines with polishing and cleaning lines, and retransfer robots to optimize substrate movement and reduce transfer paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple substrates are processed in parallel with reduced transfer paths, then production efficiency is improved, but system complexity increases
Solution Approach 1:
The system is divided into multiple independent processing lines (first processing line with first polishing line and first cleaning line, second processing line with second polishing line and second cleaning line) that can operate simultaneously. Each line handles substrates independently through dedicated transfer robots and processing equipment, enabling parallel processing while maintaining manageable complexity through modular architecture
Solution Approach 2:
The system transitions from sequential single-substrate processing to multi-dimensional parallel processing by adding a second processing line alongside the first. This dimensional expansion allows simultaneous processing of multiple substrates at different stages (polishing and cleaning) without increasing the complexity of individual processing modules
2Loss of time
If substrate transfer path is reduced, then transfer time is reduced, but transfer precision requirements increase
Solution Approach 1:
Transfer robots serve as intermediary carriers between the front-end module, polishing lines, and cleaning lines. These robots are equipped with precision positioning systems and controlled transfer mechanisms that maintain high transfer precision while moving substrates through reduced paths, eliminating the need for complex precision alignment at each transfer point
Solution Approach 2:
Substrates are loaded into carriers at the front-end module before entering the processing lines, and transfer robots are pre-positioned at designated locations. This preliminary preparation allows for rapid, precise transfers without requiring complex real-time positioning adjustments, reducing both transfer time and precision requirements during actual transfer operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enhances production efficiency by allowing simultaneous processing of multiple substrates, reducing transfer paths, and improving the smoothness of insulators, thereby facilitating the formation of additional metal layers.
Implementation Method 1
a polishing pad configured to rotate at a location at which at least a portion of the polishing pad overlaps the polishing location
Data Source
AI summary
A substrate processing system includes a front-end module, a first processing line including a first polishing line and a first cleaning line, a second processing line including a second polishing line and a second cleaning line and disposed in parallel to the first processing line, a first stage disposed between the first processing line and the second processing line, a first retransfer robot configured to transfer a substrate from the front-end module to the first stage, and a second retransfer robot having a single extensible arm configured to access the first polishing line, the first cleaning line, the second polishing line, the second cleaning line and the first stage and transfer the substrate between at least two locations of the first polishing line, the first cleaning line, the second polishing line, the second cleaning line and the first stage.