RFID Chemical Container Positioning for Semiconductor Supply Reliability
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Solution Overview
Problem
In semiconductor processes, chemical storage containers are often incorrectly mounted or positioned, leading to process failures, losses, and discarded products due to inappropriate chemical supply, necessitating a method to manage and monitor these containers effectively.
Innovation Solution
A chemical storage container management system utilizing short-range wireless communication to identify the movement path, determine expiration dates, and prevent nozzle cap mixing, comprising a chemical supply assembly with a nozzle mounting unit, container settlement unit, and monitoring management unit that acquires and transmits information for accurate container positioning and operation status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual mounting of chemical storage containers is performed, then operator flexibility is maintained, but mixing of nozzles and incorrect positioning occur leading to process failures
Solution Approach 1:
The patent replaces manual mechanical mounting operations with an automated system using short-range wireless communication (RFID tags and readers). The system automatically identifies containers and nozzles, verifies their compatibility, and guides their correct positioning, eliminating human error while maintaining system simplicity through software-based control rather than complex mechanical constraints
Solution Approach 2:
The system enables self-verification where the RFID tags on containers and nozzles automatically exchange identification information with readers. The system autonomously determines compatibility and positioning correctness without requiring operator intervention, achieving reliable container-noszzle matching through automated self-service identification and verification
2Reliability
If automated monitoring is implemented, then process failure prevention is improved, but system complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical monitoring and verification mechanisms with electronic RFID-based identification and software-based compatibility checking. The system uses wireless communication to automatically track container locations, verify nozzle-container matching, and prevent incorrect operations, achieving robust process monitoring through information technology rather than mechanical sensors and switches
Solution Approach 2:
The RFID tags serve multiple functions: identification of containers and nozzles, tracking of their locations, verification of compatibility, and triggering of alerts. This multi-functional approach consolidates what would otherwise require separate monitoring systems into a single integrated solution, reducing overall system complexity while maintaining comprehensive process oversight
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 system enables effective semiconductor process management by preventing process failures, reducing costs, and enhancing productivity through accurate container positioning and automatic disposal determination.
Implementation Method 1
acquiring container settlement information indicating whether the chemical storage container is settled and container related information from a container identification tag pre-mounted on the chemical storage container through short-range wireless communication
Data Source
AI summary
A chemical storage container management system for a semiconductor process using short-range wireless communication includes: a chemical supply assembly supplying a chemical accommodated in a chemical storage container accommodating the chemical used for the semiconductor process to a region in which the semiconductor process is performed, and generating a plurality of information related to the chemical storage container; and a monitoring management unit receiving the plurality of information generated by the chemical supply assembly, and determining an operation situation of the chemical supply assembly.