RFID tag anti-transfer method using random capacitor
A technology of RFID tags and capacitors, which is applied in the direction of record carriers used in machines, computer components, instruments, etc., can solve the problems of high cost, large tag volume, and cumbersome label production process, etc.
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[0035] In this embodiment, a method for preventing transfer of RFID tags using random capacitance is provided, including the following steps:
[0036] S1: setting at least one capacitive plate on the top layer metal in the chip;
[0037] S2: Planarly arrange a metal film parallel to the top layer metal on the package bump of the chip;
[0038] S3: The chip and the tag antenna are packaged together to form an RFID tag, and the capacitor plate and the metal film form an initialization capacitor.
[0039] In this embodiment, the chip and tag antenna obtained in step S1 and step S2 are packaged together to form an RFID tag structure diagram, which can be referred to figure 1 and figure 2 , the top layer metal 5 of the RFID chip body 8 is provided with at least one capacitive plate, figure 1 and figure 2 There are three of them, and of course it can be any other number. The upper plane of the packaging bump 4 of the RFID chip body 8 is provided with a metal film 7 correspondi...
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