Polishing Module Layout for Parallel Substrate Processing
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Solution Overview
Problem
Existing substrate processing apparatuses lack the capability for simultaneous and efficient parallel processing of multiple substrates.
Innovation Solution
A substrate processing apparatus with multiple polishing modules and a transport unit that moves substrates among these modules, featuring distinct module groups and lanes, allowing for parallel processing and efficient substrate treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single polishing module is used, then the device complexity is low, but the productivity is limited to sequential processing of substrates
Solution Approach 1:
The polishing system is divided into multiple independent polishing modules (first polishing module, second polishing module, third polishing module, fourth polishing module) arranged in parallel. Each module can process substrates independently, enabling simultaneous processing of multiple substrates and thereby improving productivity without requiring a complete redesign of the polishing mechanism.
Solution Approach 2:
The polishing modules are arranged in a two-dimensional layout with upper and lower lanes, where the first and second polishing modules are positioned in an upper lane and the third and fourth polishing modules are positioned in a lower lane. This spatial arrangement allows substrates to be processed in parallel across different spatial dimensions, increasing throughput while maintaining manageable device complexity.
2Productivity
If multiple polishing modules are added for parallel processing, then the productivity increases, but the device complexity increases
Solution Approach 1:
Multiple polishing modules are designed with identical or similar functional capabilities, each capable of performing the same polishing operation on substrates. This universality allows the system to process multiple substrates simultaneously through the same polishing mechanism, improving productivity while avoiding the complexity of designing and integrating fundamentally different processing modules.
Solution Approach 2:
The system uses replicated polishing modules (first, second, third, and fourth polishing modules) that are essentially copies of the same functional unit. Each module is a duplicate of the basic polishing mechanism, allowing parallel processing while simplifying the overall system design by using repeated, standardized components rather than complex, unique mechanisms for each processing station.
3Loss of time
If substrates are processed sequentially through multiple polishing modules, then the device complexity is low, but the loss of time increases
Solution Approach 1:
The transport unit continuously moves substrates between the polishing modules without interruption, and multiple polishing modules operate simultaneously on different substrates. This continuous operation eliminates idle time between processing steps and ensures that all polishing modules are constantly engaged in productive work, minimizing time loss and maximizing parallel processing efficiency.
Solution Approach 2:
The transport unit is designed to pre-position substrates at the appropriate polishing modules before processing begins, and substrates are routed through the polishing modules in an optimized sequence. This preliminary arrangement of substrates and processing paths minimizes transfer time and ensures that each substrate enters the polishing process without delay, reducing overall processing time while maintaining parallel operation of multiple modules.
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
Enables parallel processing of multiple substrates, improving processing speed and efficiency while effectively removing defects through polishing that cannot be addressed by non-contact cleaning methods.
Implementation Method 1
polishing modules which polish a substrate
Data Source
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AI summary
A substrate processing apparatus includes a plurality of polishing modules polishing a substrate, and a transport unit moving the substrate between the plurality of polishing modules. The plurality of polishing modules include a first module group and a second module group. The transport unit is positioned between the first module group and the second module group in a plan view. The first module group includes a first upper lane and a first lower lane in each of which at least two of the polishing modules are disposed adjacent to each other. The second module group includes a second upper lane and a second lower lane in each of which at least two of the polishing modules are disposed adjacent to each other.