Modular Mainframe Layout for Higher-Throughput Chiplet Bonding
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Solution Overview
Problem
Conventional substrate processing tools with a single linear robot housed in a mainframe offer limited expandability and processing throughput, particularly in wafer dicing and bonding processes, as they require multiple tools or chambers to handle various substrate processing steps efficiently.
Innovation Solution
A multi-chamber processing tool with an equipment front end module (EFEM) and multiple automation modules, each equipped with transfer chambers and process chambers such as wet clean, plasma, degas, and bonder chambers, allows for parallel processing of substrates, enabling efficient transfer and bonding of chiplets onto substrates through a network of transfer robots and buffers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single linear robot is used in a mainframe tool, then the device complexity is reduced, but the productivity and processing throughput are limited
Solution Approach 1:
The mainframe tool is segmented into multiple independent automation modules (first automation module, second automation module, etc.), each capable of performing substrate processing operations. This segmentation allows parallel processing of multiple substrates simultaneously, thereby increasing productivity while maintaining manageable complexity through modular design.
Solution Approach 2:
Each automation module is designed with universal functionality to handle multiple substrate types and perform various processing operations. The modules can be configured with different process chambers (cleaning, dicing, bonding) to accommodate diverse processing requirements, enhancing both productivity and versatility.
2Productivity
If multiple tools or chambers are coupled to handle various substrate processing steps, then the processing throughput is improved, but the device complexity increases
Solution Approach 1:
Multiple process chambers (cleaning chamber, dicing chamber, bonding chamber) that would traditionally require separate tools are merged into integrated automation modules. Each module combines multiple processing functions in a single unit, enabling parallel processing across multiple modules while reducing overall system complexity compared to using entirely separate tools.
Solution Approach 2:
The system employs dynamic substrate transfer mechanisms where substrates can be routed flexibly between different process chambers based on processing requirements. Transfer robots dynamically move substrates between EFEM, buffers, and various process chambers, allowing adaptable processing sequences that optimize throughput without requiring fixed complex pathways.
3Ease of operation
If conventional tools are used for cleaning, dicing, and bonding chiplets, then the ease of operation is maintained, but the adaptability to handle multiple substrate types and chiplet sizes is limited
Solution Approach 1:
Different process chambers within the automation modules are optimized with local quality characteristics specific to their function. For example, the cleaning chamber has specific cleaning mechanisms, the dicing chamber has dicing-specific equipment, and the bonding chamber has bonding-optimized features. This allows each chamber to be highly effective for its specific operation while the overall system handles multiple substrate types through modular configuration.
Data Source
AI summary
Methods and apparatus bonding chiplets to substrates are provided herein. In some embodiments, a multi-chamber processing tool for processing a substrate includes: an equipment front end module (EFEM) having one or more loadports for receiving one or more types of substrates; and a plurality of automation modules coupled to each other and having a first automation module coupled to the EFEM, wherein each of the plurality of automation modules include a transfer chamber and one or more process chambers coupled to the transfer chamber, wherein the transfer chamber includes a buffer configured to hold a plurality of the one or more types of substrates, and wherein the transfer chamber includes a transfer robot configured to transfer the one or more types of substrates between the buffer, the one or more process chambers, and a buffer disposed in an adjacent automation module of the plurality of automation modules.