Semiconductor Manufacturing Apparatus Dynamic Gas Flow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing surface area of semiconductor structures during manufacturing leads to excessive consumption of reaction gas in CVD processes, resulting in higher costs due to unnecessary gas supply as the surface area changes, causing inefficiency and waste.
Innovation Solution
A semiconductor manufacturing apparatus and method that detects transitions in the surface area of the semiconductor substrate and adjusts the reaction gas flow rate accordingly, optimizing gas usage by changing the flow rate from a first to a second flow rate as the surface area changes from a first to a second state, thereby reducing excess gas supply and waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the surface area of semiconductor structures increases during manufacturing, then the film formation capability is improved, but the consumption of reaction gas increases excessively
Solution Approach 1:
The patent applies dynamics by making the reaction gas flow rate adjustable and variable during the film formation process. The system transitions from a static, fixed flow rate approach to a dynamic, controllable flow rate system that adapts to changing surface areas, allowing optimization of gas consumption while maintaining film formation quality.
Solution Approach 2:
The patent implements parameter changes by varying the reaction gas flow rate based on the surface area of the semiconductor structures. The controller adjusts the flow rate parameter in response to surface area changes, ensuring that gas supply matches the actual demand and preventing excessive consumption while maintaining effective film formation.
2Productivity
If a large amount of reaction gas is supplied to form film on large surface area, then the film formation efficiency is improved, but the manufacturing cost increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the reaction gas flow rate parameter according to the surface area of semiconductor structures. This ensures that sufficient gas is supplied to maintain film formation efficiency on large surfaces while reducing gas supply when surface area decreases, thereby optimizing manufacturing cost.
Solution Approach 2:
The patent implements feedback control where the controller monitors the surface area of semiconductor structures and adjusts the reaction gas flow rate accordingly. This closed-loop control system ensures that gas supply is optimized in real-time, maintaining film formation efficiency while preventing excessive gas consumption and reducing manufacturing costs.
3Manufacturing precision
If the reaction gas flow rate is increased for large surface area, then the film coverage is improved, but the gas waste increases
Solution Approach 1:
The patent applies parameter changes by adjusting the reaction gas flow rate parameter based on the actual surface area of semiconductor structures. This ensures that the flow rate is optimized for each specific surface area condition, maintaining proper film coverage while preventing gas waste that would occur with a fixed, always-high flow rate approach.
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 reduces the unnecessary supply of reaction gas, minimizing waste and lowering manufacturing costs by optimizing gas flow rates in real-time with the changing surface area, enhancing the efficiency of the CVD process.
Implementation Method 1
When forming a film by CVD (Chemical Vapor Deposition) for example
Data Source
AI summary
A method of manufacturing a semiconductor device includes forming a film along a surface of a semiconductor substrate in a first surface area state having a first surface area by supplying a reaction gas at a first flow rate. The method further includes detecting a transition from the first surface area state to a second surface area state having a second surface area different from the first surface area. The method still further includes forming the film by changing the flow rate of the reaction gas from the first flow rate to a second flow rate different from the first flow rate after detecting the transition from the first surface area state to the second surface area state.