Removable Reaction Unit for Faster Epitaxy Reactor Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing epitaxial deposition reactors face significant downtime and inefficiencies during preventive maintenance due to the need for manual handling, exposure to air, and lengthy processes for cleaning and replacing consumable parts.
Innovation Solution
A reaction chamber with a removable reaction unit and a reactor design that allows for automated handling and maintenance, reducing exposure to air and minimizing downtime by enabling quick extraction and replacement of the reaction unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual handling and cleaning of consumable parts is performed, then maintenance can be completed, but downtime is excessively long and operator involvement is required
Solution Approach 1:
The reaction chamber is divided into a stationary part and a removable reaction unit. The reaction unit contains all consumable parts (susceptor, susceptor support, showerhead, gas distribution plate) as an integrated assembly that can be removed as a single unit, eliminating the need for manual handling of individual components and enabling automated extraction and replacement.
Solution Approach 2:
The system enables automated maintenance operations where the reaction unit is automatically extracted, replaced, and repositioned without operator intervention. The automated handling machine performs all maintenance tasks including extraction of the reaction unit, replacement with a fresh unit, and repositioning, thereby eliminating the need for manual cleaning and handling operations.
2Ease of repair
If the reaction chamber is accessed for maintenance, then consumable parts can be cleaned or replaced, but the chamber is exposed to air which may affect quality
Solution Approach 1:
The entire reaction unit containing consumable parts is extracted from the reaction chamber as a complete assembly through a sealed extraction path. This allows maintenance operations to be performed on the removed unit without exposing the reaction chamber to air, as the chamber remains sealed while the reaction unit is handled externally through vacuum-tight connections.
Solution Approach 2:
A sealed transfer mechanism serves as an intermediary between the reaction chamber and the external handling system. This intermediary maintains vacuum tightness during the extraction and replacement process, allowing the reaction unit to be removed and replaced without direct exposure of the chamber interior to air, thereby preventing contamination while enabling easy access to consumable parts.
3Productivity
If individual components are manually cleaned and replaced, then maintenance can be performed, but the process is time-consuming and complex
Solution Approach 1:
The reaction chamber is segmented into a stationary part and a removable reaction unit, allowing the complex assembly of consumable parts to be handled as a single modular unit. This segmentation simplifies the maintenance process from handling multiple individual components to handling one integrated unit, thereby reducing process complexity while maintaining productivity.
Solution Approach 2:
The automated handling machine performs all maintenance operations automatically, extracting the reaction unit, replacing it with a fresh unit, and repositioning it without operator intervention. This self-service automation eliminates the manual complexity of disassembling, cleaning, and reassembling individual components, significantly improving throughput during maintenance while reducing operational complexity.
Data Source
Figure 1
Figure 2I~2II
Figure 3
AI summary
The present invention relates to a reaction chamber (100) comprising a removable reaction unit (300) and a susceptive casing (200). The present invention further relates to a reactor (1000) incorporating said reaction chamber, and to an assembly (2000) comprising said reactor. Additionally, the present invention relates to a method adapted to reduce the preventive maintenance times of the reactor hereinbefore described, and to the use of said reactor in the homoepitaxial or heteroepitaxial deposition of silicon carbide or gallium nitride films on a semiconductor substrate.