Flexible Smart Card Module With Antenna-Integrated Chip Display
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Solution Overview
Problem
Smart cards are vulnerable to mechanical loads, which can damage the chip module and impair functionality, leading to potential loss of functionality or security breaches.
Innovation Solution
A smart card module featuring a flexible carrier with a flexible chip arrangement and a display module, where the chip and display are electrically connected via an antenna, and additional security features such as structured interlayers are integrated to enhance mechanical robustness and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid chip module is used in smart cards, then electrical connection and signal transmission are ensured, but mechanical robustness and resistance to mechanical loads deteriorate
Solution Approach 1:
The patent employs flexible printed circuit boards (FPC) as carriers instead of rigid substrates. The FPC allows the chip module to bend and deform under mechanical loads without breaking, while maintaining electrical connections through flexible conductive traces. This resolves the contradiction by providing both mechanical flexibility and electrical connectivity.
Solution Approach 2:
The patent uses composite material structures combining flexible polymer substrates with conductive metal traces and protective coating layers. The multi-layer composite construction provides mechanical flexibility from the polymer, electrical conductivity from the metal traces, and environmental protection from coatings, simultaneously addressing both reliability and mechanical strength requirements.
2Stability of the object's composition
If the chip arrangement is fixed rigidly to ensure stability, then positional stability is improved, but resistance to mechanical shocks and flexibility deteriorate
Solution Approach 1:
The patent transitions from rigid fixed mounting to dynamic flexible mounting using FPC technology. The flexible carrier allows the chip arrangement to move and deform dynamically under mechanical shocks, absorbing impact energy while maintaining electrical connections. This dynamic approach improves shock resistance while preserving positional stability during normal operation.
3Ease of manufacture
If traditional rigid mounting methods are used, then manufacturing simplicity is maintained, but mechanical durability and flexibility deteriorate
Solution Approach 1:
The patent changes the fundamental parameter of carrier rigidity from rigid to flexible. This parameter change enables the use of FPC manufacturing processes which, while slightly more complex than rigid PCB manufacturing, provide superior mechanical durability and flexibility. The flexible nature of FPC allows standard manufacturing techniques to be adapted, maintaining reasonable manufacturing simplicity while dramatically improving service life.
Data Source
AI summary
A smart card module includes a carrier; a chip arrangement arranged over a first side of the carrier; and an antenna arranged over a second side of the carrier, wherein the second side of the carrier is opposite the first side of the carrier. The antenna is electrically conductively connected to the chip arrangement in order to transmit electrical signals. The smart card module further includes a display module arranged over the first side of the carrier; and at least one electrical line structure arranged on the first side of the carrier, which electrical line structure electrically conductively connects the chip arrangement and the display module to one another.