Single-Chamber Wafer Decomposition and Scanning to Prevent Contamination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional vapor phase decomposition and scanning techniques for semiconductor wafers require separate chambers, leading to limited throughput, increased equipment usage, and potential contamination risks, as well as exposure to toxic substances during the handling and transfer of wafers between decomposition and scanning processes.
Innovation Solution
A single-chamber system for integrated decomposition and scanning of semiconductor wafers, utilizing a nebulizer to aerosolize decomposition fluids directly onto the wafer and a nozzle system with an elongated channel to guide scanning fluids along the wafer surface, allowing for controlled fluid movement and reduced contamination, while a motor system positions the wafer for efficient access and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate chambers are used for decomposition and scanning, then each process can be performed independently, but throughput is limited and equipment complexity increases
Solution Approach 1:
The patent combines the decomposition chamber and scanning chamber into a single integrated chamber system. The chamber body contains both the decomposition region (with nebulizer for applying decomposition fluid) and the scanning region (with nozzle for applying scan fluid) within the same enclosed space, allowing sequential decomposition and scanning operations on the same wafer without transferring between separate chambers, thereby improving throughput while maintaining process reliability
2Reliability
If separate chambers are used for decomposition and scanning, then process independence is maintained, but the number of equipment pieces increases
Solution Approach 1:
The patent integrates multiple chamber functions into a single chamber body structure. The chamber body defines both the decomposition region and scanning region within its interior volume, eliminating the need for separate decomposition and scanning chambers. This reduces the total number of equipment pieces while maintaining the independence of decomposition and scanning processes through spatial separation of functional regions within the same chamber
3Reliability
If wafers are transferred between separate chambers, then decomposition and scanning can be performed separately, but contamination risk increases
Solution Approach 1:
The patent combines decomposition and scanning operations within a single sealed chamber body, eliminating the need to transfer wafers between separate chambers. The chamber body maintains a controlled internal environment where decomposition fluid is applied in the decomposition region followed by scan fluid application in the scanning region, preventing wafer exposure to external contamination sources during transfer operations
4Reliability
If wafers are transferred between separate chambers, then process separation is achieved, but exposure to hazardous substances increases
Solution Approach 1:
The patent integrates decomposition and scanning within a single chamber body to eliminate wafer transfer operations. By maintaining both processes within the same sealed environment, the system prevents wafers from being exposed to hazardous substances during transfer between chambers, while still achieving process separation through the use of distinct decomposition and scanning regions with separate fluid delivery systems
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 integrated approach enhances throughput, reduces equipment needs, minimizes exposure to hazardous substances, and prevents contamination by enabling simultaneous decomposition and scanning within a single chamber footprint, improving the efficiency and safety of semiconductor wafer analysis.
Implementation Method 1
a nebulizer configured to spray a decomposition fluid onto the surface of the semiconducting wafer
Implementation Method 2
a nozzle system with an elongated channel to guide scanning fluids along the wafer surface, allowing for controlled fluid movement
Data Source
AI summary
Systems and methods are described for integrated decomposition and scanning of a semiconducting wafer, where a single chamber is utilized for decomposition and scanning of the wafer of interest.