Epitaxial Reactor Handling Layout for Hot Substrate Transfer
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Solution Overview
Problem
Existing epitaxial reactors face challenges in efficiently handling substrates at high temperatures and pressures during the deposition of semiconductor materials, particularly silicon carbide, with limitations in automation and handling efficiency.
Innovation Solution
The introduction of a treating arrangement comprising a reaction chamber, transfer chamber, loading/unloading group, and storage chamber, equipped with automated substrate support devices and robots for handling substrates at high temperatures, enabling efficient transfer and treatment of substrates within the reactor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual handling of substrates is used in existing epitaxial reactors, then device complexity is reduced, but productivity and handling efficiency deteriorate
Solution Approach 1:
The substrate support device is designed to automatically load substrates onto carriers and position them within the reaction chamber without external intervention. The device includes self-contained mechanisms for substrate transport, positioning, and temperature maintenance, enabling the system to handle substrates autonomously throughout the epitaxial process
Solution Approach 2:
The substrate support device integrates multiple functions into a single unit: it serves as a substrate carrier, a transport mechanism, a positioning system, and a temperature-controlled chamber. This multi-functional design improves productivity while controlling overall system complexity by consolidating rather than multiplying components
2Reliability
If substrates are handled at high temperatures without specialized equipment, then energy consumption is reduced, but reliability and process control deteriorate
Solution Approach 1:
The substrate support device pre-heats substrates to the required temperature before they enter the reaction chamber, and maintains their temperature throughout the handling process. This preliminary heating action ensures that substrates are always at the correct temperature for the epitaxial process, improving reliability without requiring continuous high-energy heating during the entire process
Solution Approach 2:
The system dynamically adjusts temperature parameters during substrate handling - maintaining high temperature during critical process stages while reducing energy input during transfer and loading phases. The substrate support device incorporates temperature control mechanisms that adapt heating power based on the operational phase, balancing reliability and energy consumption
3Productivity
If automated substrate handling is implemented, then productivity improves, but device complexity increases
Solution Approach 1:
The treating arrangement merges the substrate support device, reaction chamber, and handling mechanisms into an integrated system. The substrate support device is positioned to directly interface with the reaction chamber, eliminating the need for separate loading and transfer mechanisms. This consolidation improves deposition efficiency while controlling the increase in device complexity through functional integration
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
Facilitates the automated and efficient handling of substrates at high temperatures, improving the efficiency and reliability of epitaxial deposition processes for semiconductor materials, particularly silicon carbide, by enhancing automation and reducing manual intervention.
Implementation Method 1
Reactors for epitaxial deposition have been known for decades... reactors for epitaxial deposition at high temperature (in particular higher than 1,300° C. and lower than 1,600° C.) of layers of semiconductor material on substrates of semiconductor material
Data Source
AI summary
The treating arrangement (900) for an epitaxial reactor (1000) comprises: a reaction chamber (100) for treating substrates, a transfer chamber (200) adjacent to the reaction chamber (100), for transferring substrates placed over substrates support devices, a loading/unloading group (300) at least in part adjacent to the transfer chamber (200), arranged to contain a substrates support device with one or more substrates, a loading/unloading chamber (400) at least in part adjacent to the loading/unloading group (300), having a first storage zone (410) for treated and/or untreated substrates and a second storage zone (420) for substrates support devices without any substrate, at least one external robot (500) for transferring treated substrates, untreated substrates and substrates support devices without any substrate between said loading/unloading chamber (400) and said loading/unloading group (300), at least one internal robot (600) for transferring substrates support devices with one or more substrates between said loading/unloading group (300) and said reaction chamber (100) via said transfer chamber (200); wherein said external robot (500) comprises an articulated arm (510) arranged to handle both treated substrates and untreated substrates as well as substrates support devices.