Clean Air Filter Layout for Uniform Substrate Treatment
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Solution Overview
Problem
In substrate treatment apparatuses where multiple units are arranged in a row, variations in clean air flow velocity result in inconsistent treatment results due to differences in proximity to the air supply duct, affecting processes like resist film thickness in semiconductor manufacturing.
Innovation Solution
A filter apparatus with an air volume adjustment mechanism that adjusts the air flow distribution between substrate treatment units, using a damper system to equalize air volume and flow rate across all units, ensuring consistent treatment outcomes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple substrate treatment apparatuses are arranged in a row with a common air supply duct, then space utilization is improved, but air flow velocity varies across apparatuses causing inconsistent treatment results
Solution Approach 1:
The patent introduces individual air volume adjustment mechanisms for each substrate treatment apparatus, allowing localized control of air flow to each unit. This enables each apparatus to receive the appropriate air volume regardless of its position in the row, ensuring consistent treatment quality across all units while maintaining the space-efficient row arrangement.
Solution Approach 2:
The patent employs adjustable air volume control mechanisms that can dynamically regulate air flow distribution to each substrate treatment apparatus. This dynamic adjustment capability allows the system to compensate for position-dependent flow variations, maintaining treatment consistency while preserving the compact row configuration.
2Device complexity
If air is supplied from a single duct to multiple apparatuses, then device complexity is reduced, but air flow distribution becomes uneven affecting treatment uniformity
Solution Approach 1:
The patent segments the air supply system by providing individual air volume adjustment mechanisms for each substrate treatment apparatus. This segmentation allows independent control of air flow to each unit, ensuring uniform air distribution while maintaining a relatively simple overall duct structure that supplies air to multiple apparatuses.
Solution Approach 2:
The patent introduces air volume adjustment mechanisms as intermediary components between the common air supply duct and individual substrate treatment apparatuses. These intermediaries regulate and equalize air flow distribution, ensuring treatment uniformity while preserving the simplicity of the common duct architecture.
3Adaptability or versatility
If apparatuses are positioned at different distances from the air inlet, then flexible layout is achieved, but air flow velocity differences cause treatment variations
Solution Approach 1:
The patent implements local air volume control at each substrate treatment apparatus through individual adjustment mechanisms. This allows each apparatus to receive the appropriate air volume regardless of its distance from the air inlet, ensuring treatment uniformity while maintaining layout flexibility for various apparatus arrangements.
Solution Approach 2:
The patent employs air flow sensors and control mechanisms that can detect and adjust air volume distribution to each apparatus based on its position. This feedback control ensures that apparatuses at different distances from the air inlet receive appropriate air flow, maintaining treatment uniformity while preserving layout flexibility.
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 mechanism ensures uniform air supply to all substrate treatment units, minimizing variations in treatment results and preventing localized strong air flows that could disrupt uniformity, thereby enhancing process consistency.
Implementation Method 1
an air volume adjustment mechanism configured to variably adjust a volume of air flowing from a first space on the air inlet side in the duct space into a second space adjacent to the first space in the row direction
Data Source
AI summary
A filter apparatus having a filter installed above a plurality of substrate treatment apparatuses arranged in a row, includes: an air inlet formed on one end portion side in a row direction of the substrate treatment apparatuses in a duct space formed above the filter; and an air volume adjustment mechanism configured to variably adjust a volume of air flowing from a first space on the air inlet side in the duct space into a second space adjacent to the first space in the row direction, the air volume adjustment mechanism being provided at a position between apparatuses in the plurality of substrate treatment apparatuses in plan view.