Smart Card Module Inductive Coupling for Delamination Prevention
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Solution Overview
Problem
The contact point between the smart card antenna and the smart card module is a weak point in smart card production, prone to failures due to delamination of the potting compound and inadequate adhesion, especially under mechanical loads.
Innovation Solution
A smart card module arrangement with a carrier featuring a depression to house the smart card module and a contactless coupled smart card antenna, which eliminates the need for direct electrical coupling and enhances mechanical robustness through inductive coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermocompression welding is used to connect the antenna wire to the smart card module, then electrical connection is achieved, but the smart card module is subjected to high thermal and mechanical loads causing delamination and adhesion failures
Solution Approach 1:
The patent extracts the problematic direct electrical connection between the antenna and smart card module by introducing an inductive coupling mechanism. The antenna is decoupled from direct contact with the module, eliminating the thermal and mechanical stresses caused by thermocompression welding while maintaining electrical functionality through magnetic field coupling.
Solution Approach 2:
The patent introduces an intermediary magnetic field coupling mechanism between the antenna and the smart card module. Instead of direct electrical contact, the connection is mediated through inductive coupling, where the antenna and module communicate via magnetic fields, thereby avoiding direct mechanical and thermal stress on the module structure.
2Reliability
If direct electrical coupling is used between the smart card antenna and module, then electrical connection is established, but the contact point becomes a weak point prone to detachment under mechanical stress
Solution Approach 1:
The patent replaces the mechanical electrical connection system with an electromagnetic field-based system. Instead of using physical wire connections that are susceptible to mechanical stress and detachment, the invention uses inductive coupling where electrical signals are transmitted through magnetic fields, eliminating the mechanical weak point while maintaining electrical functionality.
3Ease of manufacture
If thermocompression welding process is used to connect the antenna, then electrical coupling is achieved, but production complexity increases due to complex contact-making processes
Solution Approach 1:
The patent extracts the complex thermocompression welding process from the manufacturing workflow by eliminating the need for direct electrical connection. The inductive coupling mechanism allows the antenna to be positioned and fixed without requiring precise contact-making operations, thereby simplifying the production process while maintaining electrical connection functionality.
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 solution prevents detachment of the smart card antenna from the module under mechanical stress, reduces production costs by avoiding complex contact-making processes, and results in a more robust, encapsulated smart card module.
Implementation Method 1
a smart card antenna can be provided in the smart card, such that the communication can be effected wirelessly therewith and by means of the magnetic field generated by the reader
Implementation Method 2
The smart card antenna can be coupled to the smart card module in a contactless manner
Data Source
AI summary
In various embodiments, a smart card module arrangement is provided. The smart card module arrangement includes a carrier, in which a depression is formed, a smart card module, which is arranged in the depression, and a smart card antenna. The smart card antenna can be coupled to the smart card module in a contactless manner.