RFID Tag With Projecting Terminals for Metal Attachment
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Solution Overview
Problem
RFID tags attached to metal surfaces with adhesives are prone to detachment due to environmental factors such as temperature changes and gas release, making them unsuitable for high-temperature environments like medical instruments.
Innovation Solution
An RFID tag design featuring a closed current loop with plane conductors, an RFIC, capacitor, and inductor, along with terminals that project outward, forming a configuration that enhances environmental resistance and avoids gas release issues by using a dielectric layer and integrated metal members for improved attachment and radiation capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an RFID tag is bonded to a metal surface with an adhesive layer, then the RFID tag can be attached to the metal article, but the RFID tag may fall off due to environmental factors such as temperature change and outgas from the adhesive
Solution Approach 1:
The invention extracts and eliminates the adhesive layer from the RFID tag structure. By removing the adhesive component entirely, the patent avoids the problems of outgas and adhesive failure at high temperatures, while still achieving reliable attachment through alternative means such as mechanical fixation or direct bonding of the terminal to the metal article.
Solution Approach 2:
The patent employs a simple terminal structure that can be directly attached to the metal article without requiring durable adhesive bonding. This approach accepts that the attachment method may be simpler and potentially less permanent, but eliminates the reliability issues associated with adhesive degradation under harsh environmental conditions.
2Ease of manufacture
If an adhesive layer is used to bond the RFID tag to the metal surface, then the RFID tag can be easily attached, but volatile chemical substances are released from the adhesive in high temperature environments
Solution Approach 1:
The invention extracts and eliminates the adhesive layer from the RFID tag structure. By removing the adhesive component entirely, the patent avoids the problems of outgas and adhesive failure at high temperatures, while still achieving reliable attachment through alternative means such as mechanical fixation or direct bonding of the terminal to the metal article.
Solution Approach 2:
The patent creates an inert environment by eliminating the organic adhesive material that would otherwise decompose and release volatile chemicals. The adhesive-free construction ensures that no harmful outgas is generated during high-temperature sterilization or other harsh environmental exposures.
3Ease of manufacture
If an RFID tag is attached with an adhesive layer, then the RFID tag can be bonded to the metal surface, but the structure is not suitable for high temperature environments such as sterilization
Solution Approach 1:
The invention extracts and eliminates the adhesive layer from the RFID tag structure. By removing the adhesive component entirely, the patent avoids the problems of outgas and adhesive failure at high temperatures, while still achieving reliable attachment through alternative means such as mechanical fixation or direct bonding of the terminal to the metal article.
Solution Approach 2:
The patent changes the fundamental parameter of the attachment method from chemical bonding (adhesive) to a physical or mechanical attachment method. This parameter change enables the RFID tag to withstand high-temperature environments such as sterilization processes, expanding its adaptability to harsh environmental conditions.
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 RFID tag exhibits high environmental resistance and stable communication characteristics, preventing detachment and maintaining functionality in harsh conditions, such as high-temperature environments, without relying on adhesives.
Implementation Method 1
an RFIC, a capacitor, and an inductor, forming a part of a closed current loop
Implementation Method 2
The closed current loop has two places with a large potential difference, including one place electrically connected to the first plane conductor, and the other place electrically connected to the second plane conductor
Data Source
AI summary
An RFID tag is provided that includes a first plane conductor; a second plane conductor that partially or entirely faces the first plane conductor; and an RFIC, a capacitor, an inductor, and terminals that form a part of a closed current loop. The closed current loop has two places with a large potential difference, including one place electrically connected to the first plane conductor, and the other place electrically connected to the second plane conductor. Moreover, the terminals are electrically connected to the second plane conductor and project outward from a region where the first plane conductor and the second plane conductor face each other.