Semiconductor Cleaning Brush With Non-Constant Nodule Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional brushes used in semiconductor manufacturing for cleaning surfaces have a constant nodule density, which can lead to inconsistent cleaning and potential damage due to varying contact areas, particularly in the center region, and inefficient use of cleaning fluids.
Innovation Solution
A brush design with a non-constant nodule density, featuring a center core with cleaning material that has nodules arranged in patterns such as helical or grid configurations, with varying densities and shapes, to reduce contact in the center region and optimize fluid distribution, thereby enhancing cleaning consistency and reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a constant nodule density is used in the brush, then the brush structure is simple and easy to manufacture, but the cleaning consistency deteriorates and damage risk increases due to varying contact areas
Solution Approach 1:
The brush implements non-constant nodule density with different regions having different nodule concentrations. The first region has a first nodule density while the second region has a second nodule density that differs from the first. This local variation in nodule density optimizes cleaning consistency across different areas of the substrate, resolving the contradiction between manufacturing simplicity and cleaning precision.
2Device complexity
If a constant nodule density is used in the brush, then the brush design is uniform and simple, but cleaning damage risk increases due to excessive contact in the center region
Solution Approach 1:
The brush design applies different nodule densities to different regions: a first nodule density in the first region and a second nodule density in the second region. This local differentiation reduces excessive contact in the center region while maintaining adequate contact at the edges, thereby reducing cleaning damage risk while keeping the design relatively simple.
Solution Approach 2:
The brush transitions from a symmetric constant-density design to an asymmetric non-constant density design where the nodule distribution varies across regions. This asymmetric distribution better matches the actual cleaning requirements, reducing harmful contact forces in the center region while maintaining overall design simplicity.
3Device complexity
If a constant nodule density is used in the brush, then the brush structure is straightforward, but cleaning effectiveness deteriorates due to inefficient fluid distribution
Solution Approach 1:
The brush employs non-constant nodule density with region-specific variations to optimize cleaning effectiveness. The first region has a first nodule density and the second region has a second nodule density, creating more efficient fluid distribution and contact patterns that enhance overall cleaning productivity while maintaining a relatively straightforward brush structure.
Data Source
AI summary
Provided is a disclosure for a brush for cleaning a surface, where the brush comprises a center core and cleaning material around the center core. Modules are found on the cleaning material, where nodule density on the cleaning material varies. Accordingly, a first nodule density of a first region of the cleaning material is different than a second nodule density of a second region of the cleaning material.