Dual Exhaust Plenum Layout for Semiconductor Gas Separation
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Solution Overview
Problem
Conventional semiconductor manufacturing reaction chambers use a single exhaust plenum and exhaust line, which is inefficient in removing unused precursor and co-reactant, leading to suboptimal process control and potential contamination.
Innovation Solution
Implementing a dual exhaust plenum system with concentrically arranged first and second exhaust plenums, each with dedicated exhaust through-holes and isolation mechanisms, allowing independent control of gas flow and pressure regulation through separate exhaust lines and valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single exhaust plenum and exhaust line are used, then the device complexity is reduced, but the productivity and process control efficiency deteriorate due to inefficient removal of unused precursor and co-reactant
Solution Approach 1:
The exhaust system is segmented into two separate exhaust plenums (first and second exhaust plenums) with dedicated exhaust lines, allowing independent control and removal of different gas streams. This segmentation enables optimized process control for each gas type while maintaining manageable system complexity through modular design
2Reliability
If a single exhaust plenum is used, then the device complexity is reduced, but the reliability deteriorates due to potential contamination and suboptimal process control
Solution Approach 1:
The exhaust system is divided into separate plenums for different gas types (precursor and co-reactant), preventing cross-contamination and ensuring reliable process control. Each segmented exhaust path can be independently controlled and monitored, enhancing overall system reliability
Solution Approach 2:
Separate exhaust lines act as intermediaries between the reaction chamber and the pump, providing dedicated pathways for different gas streams. This intermediary structure prevents direct mixing of gas streams and ensures reliable, contamination-free exhaust
3Manufacturing precision
If separate exhaust lines and valves are implemented, then the manufacturing precision and process control improve, but the device complexity increases
Solution Approach 1:
The exhaust system is segmented into separate controlled pathways with dedicated valves for each plenum, enabling precise control of gas flow rates and timing. This segmentation allows independent optimization of each gas stream's removal process, achieving high manufacturing precision
Solution Approach 2:
The system incorporates dynamic control elements (valves) that can adjust gas flow rates and timing in real-time. This dynamic capability enables precise control of the exhaust process, optimizing removal efficiency for different gas types while maintaining system manageability
Data Source
AI summary
Various embodiments of the present technology may provide an apparatus having two separate exhaust plenums. The apparatus may include a top portion having at least one inlet and a first exhaust plenum and a second exhaust plenum. The apparatus may further include a bottom portion having a plurality of first exhaust through-holes coupled to the first exhaust plenum and a plurality of second exhaust through-holes coupled to the second exhaust plenum.