Process Data Verification for Wafer Carrier and Contamination Flags
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In semiconductor manufacturing, incorrect setting of contamination flags in process data can lead to production line stoppages and delays due to mismatched wafer carrier types and contamination levels, causing inefficiencies and increased pressure on authority units.
Innovation Solution
A process data detection method that involves determining whether the wafer carrier type and contamination flags match acceptable levels and flags for corresponding process steps, using a first and second production system to verify compatibility and output detection information to prevent production process continuation if mismatches are found.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If process data is set without verification, then the setting process is fast and simple, but the accuracy of contamination flag settings cannot be guaranteed, leading to production line stoppages
Solution Approach 1:
The patent implements preliminary detection of process data before production begins. The detection system checks wafer carrier type compatibility and contamination flag accuracy in advance, identifying errors before they cause production line stoppages. This preliminary verification ensures data accuracy while maintaining operational efficiency.
Solution Approach 2:
The patent introduces a detection system as an intermediary between process data setting and production execution. This intermediary system verifies wafer carrier type compatibility and contamination flag accuracy, acting as a buffer that prevents erroneous data from causing production disruptions without requiring complete system redesign.
2Reliability
If multiple detection systems are implemented, then the accuracy of process data verification is improved, but the system complexity and detection time increase
Solution Approach 1:
The patent divides the detection process into two independent systems: a first detection system that performs initial verification of wafer carrier type and contamination flag, and a second detection system that performs additional verification. This segmentation allows parallel processing and distributes the detection load, improving overall reliability while managing detection time through systematic division of verification tasks.
Data Source
AI summary
A detection method includes: determining process data of a new process; according to the process data of the new process, detecting, by a first production system, whether a wafer carrier type of the new process matches an acceptable level of a corresponding process step or not and whether the new process matches a flag of the corresponding process step or not; if not, determining that the process data does not pass the detection and outputting first detection information; or if the wafer carrier type of the new process matches the acceptable level of the corresponding process step and the new process matches the flag of the corresponding process step, detecting, by a second production system, if the second production system detects a mismatch, determining that the process data does not pass the detection and outputting second detection information.