Semiconductor Gas Supply Heating for Uniform Decomposition
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Solution Overview
Problem
The integration of two-dimensional and planar semiconductor devices is limited by the cost of process equipment needed for fine pattern forming technology, making it challenging to increase their integration capacity, prompting the need for three-dimensional semiconductor memory devices with vertically arranged memory cells.
Innovation Solution
A semiconductor manufacturing apparatus that heats reaction gases in a gas tank and gas line, decomposing a portion of the gas to supply it to a process chamber, allowing for efficient and controlled gas distribution, which enhances the semiconductor manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If reaction gas is supplied directly to the process chamber without heating, then the gas supply speed is fast, but the process uniformity deteriorates and insufficient decomposition occurs
Solution Approach 1:
The gas tank and gas line are heated in advance before gas supply to pre-decompose the reaction gas and maintain optimal temperature. This preliminary heating action ensures that when gas is supplied, it is already at the required temperature for uniform processing, resolving the contradiction between fast supply speed and process uniformity.
Solution Approach 2:
The temperature parameter of the reaction gas is changed by heating the gas tank and gas line to a specific temperature range. This parameter change enables the reaction gas to decompose to an appropriate extent before supply, improving process uniformity without significantly compromising supply speed.
2Manufacturing precision
If reaction gas is heated to decompose it, then the process uniformity is improved, but the energy consumption increases
Solution Approach 1:
Heating is performed in advance during idle periods or between batches, allowing the system to accumulate thermal energy without affecting production timing. This preliminary action reduces peak energy consumption while maintaining process uniformity during actual gas supply.
Solution Approach 2:
The temperature is optimized to the minimum level required for sufficient gas decomposition, balancing energy consumption with process uniformity. By carefully controlling the temperature parameter, the system achieves adequate decomposition without excessive energy use.
3Productivity
If more reaction gas is supplied to the process chamber, then the productivity is improved, but the amount of gas required increases
Solution Approach 1:
The temperature of the reaction gas is increased through heating the gas tank and gas line, which enhances the decomposition rate and reactivity of the gas. This parameter change allows more effective utilization of the reaction gas, improving productivity while reducing the total gas quantity required.
Solution Approach 2:
Thermal energy is used to substitute for increased gas flow rate. Instead of supplying more cold gas to improve productivity, the system uses heat to activate and decompose the gas, achieving better manufacturing efficiency with reduced gas consumption.
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
This approach enables improved process uniformity and reduces the amount of reaction gas required, facilitating higher integration density in semiconductor devices while controlling temperature and pressure to optimize the manufacturing process.
Implementation Method 1
heating, using one or more heating devices of the semiconductor manufacturing apparatus, a gas tank and a gas line of the semiconductor manufacturing apparatus... The changing of the temperature of the reaction gas includes decomposing a portion of the reaction gas into one or more materials different from the reaction gas
Data Source
AI summary
The present disclosure provides methods and apparatuses for supplying a process gas in a semiconductor manufacturing process. In some embodiments, the method includes heating, using one or more heating devices of the semiconductor manufacturing apparatus, a gas tank and a gas line of the semiconductor manufacturing apparatus. The method further includes filling, through the gas line, the gas tank with a reaction gas. The method further includes changing, using the one or more heating devices, a temperature of the reaction gas in the gas tank. The method further includes supplying the reaction gas from the gas tank to a process chamber of the semiconductor manufacturing apparatus. The changing of the temperature of the reaction gas includes decomposing a portion of the reaction gas into one or more materials different from the reaction gas.