Method for making contactless cards with coiled antenna
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United States of America Patent
Stats
-
Feb 11, 2003
Issued Date -
N/A
app pub date -
Aug 23, 1999
filing date -
Feb 24, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention concerns the production of contactless transmission chip card, and particularly mixed cards operating with or without contact. The method for the reliable and efficient setting of an integrated circuit module (M) and of an inductive transmission antenna (A), consists in producing the module providing connection ranges for the antenna, making an antenna with a flat coiled wire, and soldering the ends of said antenna on the module ranges, then making a plastic wafer (30) provided with an opening, the bottom of this opening being closed by an adhesive film (34). The module and the antenna are set against the wafer, and maintained by the adhesive material at the bottom of the housing. Another wafer (40) is directly mounted on the assembly.
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Family
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