Emission Path Detoxification for Semiconductor Silicon Substrates
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Solution Overview
Problem
In the process of forming semiconductor silicon substrates using epitaxial growth apparatuses, the byproducts containing silicon and halogen elements, such as halosilanes, can precipitate and degenerate into hazardous substances, posing safety risks and requiring detoxification without disassembling the emission path piping.
Innovation Solution
A silicon-containing product forming apparatus is designed with a reaction chamber, an emission path, a process liquid tank, and a flow path switcher, where a basic aqueous solution is used to detoxify the byproducts within the emission path, breaking reactive bonds and preventing explosive substances from forming, without detaching the piping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the emission path piping is detached for detoxification, then the byproducts can be fully treated, but the operation time increases and equipment complexity increases
Solution Approach 1:
The patent introduces a detoxification mechanism that is pre-installed and integrated into the emission path piping system. The basic aqueous solution is supplied through pre-positioned injection ports along the emission path, allowing detoxification to occur in-situ without requiring disassembly of the piping. This preliminary setup enables immediate detoxification treatment while maintaining continuous operation.
Solution Approach 2:
The patent uses a basic aqueous solution as an intermediary substance to detoxify the halosilane byproducts. The solution is injected through the emission path piping to react with and neutralize the hazardous byproducts, converting them into safe substances that can be discharged. This intermediary approach allows detoxification without physical removal or disassembly of the piping system.
2Reliability
If the emission path piping is detached for detoxification, then the byproducts can be fully treated, but the device complexity increases
Solution Approach 1:
The patent merges the detoxification function with the existing emission path piping system. The detoxification mechanism is integrated into the piping structure, with injection ports and solution supply lines combined with the emission path. This merging eliminates the need for separate detoxification equipment and piping disassembly, reducing overall device complexity while maintaining effective detoxification.
Solution Approach 2:
The emission path piping system is designed to serve multiple functions: it serves as both the emission pathway for reaction gases and as the delivery channel for detoxification solution. The piping structure is universal, handling both gas flow and liquid injection, thereby eliminating the need for separate dedicated detoxification piping and reducing system complexity.
3Object-affected harmful factors
If the basic aqueous solution is supplied to treat byproducts, then explosive substances are prevented from forming, but the fluid flow management becomes more complex
Solution Approach 1:
The patent implements multiple injection ports positioned at different locations along the emission path piping. This local distribution allows the basic aqueous solution to be delivered precisely where halosilane byproducts are present, ensuring effective detoxification at each segment of the emission path. The localized injection approach prevents explosive substance formation throughout the system while maintaining manageable fluid flow control.
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
The apparatus safely detoxifies byproducts, preventing the formation of explosive substances and ensuring operational safety by using a basic aqueous solution to treat halosilanes and hydrolysates within the emission path, allowing continuous operation without disassembling the equipment.
Implementation Method 1
a basic aqueous solution is used to detoxify the byproducts within the emission path, breaking reactive bonds and preventing explosive substances from forming
Data Source
AI summary
According to one embodiment, a silicon-containing product forming apparatus includes a reaction chamber, an emission path, a process liquid tank, a supplier, and a flow path switcher. The emission path emits an emission material from the reaction chamber. The supplier includes a supply line configured to supply a process liquid to the emission path from the process liquid tank, and a byproduct generated by reaction is treated in the emission path by the supplied process liquid. The flow path switcher switches the communication state of the emission path with each of the reaction chamber and the supply line of the supplier.