RFID Label Release Liner Window for Interposer Protection
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Solution Overview
Problem
Current RFID devices face challenges in achieving improved performance, reduced size, and lower costs, with passive tags requiring careful handling due to their fragile and expensive interposers, which are often damaged during fabrication and testing processes.
Innovation Solution
The method involves coupling an interposer to an antenna through an opening in a release liner later in the fabrication process, reducing wear and tear on the interposer, allowing for testing before application, and using a roll-to-roll process with greater tolerances, thereby improving reliability and reducing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interposer is coupled to the antenna during standard fabrication processes, then the RFID label can be manufactured, but the interposer is prone to wear and tear leading to potential failures and increased material waste
Solution Approach 1:
The release liner with opening is prepared in advance before the interposer coupling step. This preliminary preparation allows the interposer to be placed through the pre-formed opening without requiring complex alignment or handling during the coupling process, thereby reducing wear and tear while maintaining ease of manufacture
Solution Approach 2:
The release liner acts as an intermediary element that facilitates the coupling of the interposer to the antenna. The opening in the release liner provides a guided pathway that protects the interposer during placement while ensuring proper alignment, thus improving reliability without significantly complicating the manufacturing process
2Reliability
If the interposer is placed early in the fabrication process, then the RFID label can be assembled, but wear and tear during fabrication leads to potential failures
Solution Approach 1:
The release liner with opening is prepared in advance, allowing for efficient interposer placement later in the process. This preliminary preparation enables faster coupling operations compared to traditional methods that require complex alignment procedures, thus improving reliability without significant time penalty
3Loss of substance
If standard fabrication processes are used for coupling interposer to antenna, then manufacturing can proceed, but material waste increases due to interposer failures
Solution Approach 1:
The release liner with opening serves as a protective intermediary during interposer placement. It guides the interposer into position and protects it from damage, thereby reducing material waste from failed interposers without requiring complex handling procedures or additional protective measures
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 approach enhances the reliability and reduces the risk of label failure during fabrication, decreases the thickness of the RFID label, and lowers costs by eliminating unnecessary testing and material waste, while maintaining performance.
Implementation Method 1
adhering a release liner to the adhesive
Implementation Method 2
conductive interposer leads coupled to the chip
Data Source
AI summary
An RFID label includes a release liner having an opening or window, to allow placement of an interposer through the window, and in contact with end portions of an antenna. By coupling the interposer to the antenna through the window in the release liner, the coupling may be performed at a later point than usual in the fabrication of the label. This allows the label to be fabricated with less wear and tear on the interposer, which is a relatively expensive and fragile part of the antenna. In addition, testing of the interposers before applying them to a web of labels may save costs by eliminating waste of material. Testing of the straps alone can allow prediction of performance of the finished label.