Thermal Imaging for Chemical Solution Flow Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing semiconductor manufacturing processes face challenges in ensuring steady flow and distribution of chemical solutions, leading to defects in chemical or physical reactions, which can affect product quality due to inadequate process control.
Innovation Solution
A substrate processing system is developed, incorporating a liquid-dispensing module, monitoring module, and control module that uses a thermo-graphic camera to analyze thermal images of the chemical solution flow, allowing for dynamic adjustment and maintenance to ensure uniformity and prevent defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical solution is supplied over the substrate to treat or clean the material surface, then cleaning effectiveness is improved, but flow distribution uniformity deteriorates leading to defects
Solution Approach 1:
The system performs preliminary monitoring of chemical solution flow distribution using thermal imaging before the actual substrate processing begins. This allows detection and correction of flow uniformity issues in advance, ensuring that only when flow distribution is within acceptable parameters does the system proceed with substrate treatment, thus preventing defects before they occur
Solution Approach 2:
The system implements continuous feedback monitoring by capturing thermal images of the chemical solution flow, analyzing temperature distribution patterns, and comparing them against baseline data. When deviations are detected, the system can adjust dispensing parameters in real-time to maintain uniform flow distribution, ensuring consistent cleaning effectiveness without defects
2Manufacturing precision
If thermal imaging monitoring is implemented to detect chemical solution flow, then flow uniformity control is improved, but system complexity increases
Solution Approach 1:
The system uses thermal imaging as an intermediary measurement method to indirectly monitor chemical solution flow distribution. Instead of directly measuring flow characteristics, the system captures thermal patterns that correlate with flow uniformity, providing a non-intrusive and relatively simple monitoring approach that avoids complex direct flow measurement instrumentation
Solution Approach 2:
The system replaces complex mechanical flow measurement and control mechanisms with thermal imaging-based monitoring. By using optical/thermal detection instead of mechanical flow meters and sensors, the system achieves flow uniformity control with reduced mechanical complexity and fewer moving parts
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 system effectively monitors and adjusts the chemical solution flow, enhancing production yields by preventing defects and maintaining high uniformity of the chemical solution distribution, thereby improving the quality of semiconductor manufacturing processes.
Implementation Method 1
producing a first thermal image of the first flow of the chemical solution
Data Source
AI summary
A method for processing a substrate is provided. The method includes supplying a first flow of a chemical solution into a processing chamber, configured to process the substrate, via a first dispensing nozzle. The method further includes producing a first thermal image of the first flow of the chemical solution. The method also includes performing an image analysis on the first thermal image. In addition, the method includes moving the substrate into the processing chamber when the result of the analysis of the first thermal image is within the allowable deviation from the baseline.