Fingerprint reading sensor IC (Integrated Circuit) card and packaging method thereof

Abstract

The invention relates to an IC (Integrated Circuit) card and a packaging method thereof, in particular to a fingerprint reading sensor IC card and a packaging method thereof, and belongs to the technical field of sensor IC cards. According to the technical scheme provided by the invention, the fingerprint reading sensor IC card comprises a fingerprint sensor IC chip, wherein a thin-film substrate is arranged on the front face of the fingerprint sensor IC chip; a reinforcing plate is arranged on the rear face of the fingerprint sensor IC chip; the thin-film substrate is provided with a first window penetrating through the thin-film substrate; the first window of the thin-film substrate corresponds to a fingerprint sensing part on the fingerprint sensor IC chip; the fingerprint sensing part is exposed from the first window ; a sensor control circuit of the fingerprint sensor IC chip is electrically connected with a data processing circuit which is arranged on the rear face region of the thin-film substrate and is used for identifying and processing fingerprint data. The fingerprint reading sensor IC card provided by the invention is simple and compact in structure, simple in packaging process, low in manufacturing and packaging cost, wide in application range, and safe and reliable.

Description

technical field [0001] The invention relates to an IC card and a packaging method thereof, in particular to a fingerprint reading sensor IC card and a packaging method thereof, belonging to the technical field of sensor IC cards. Background technique [0002] In recent years, compared with magnetic stripe cards, IC cards equipped with IC (integrated circuit) chips have been rapidly popularized due to their features such as increased information capacity and enhanced security. In particular, non-contact IC cards, which transmit information through electromagnetic waves, are used in public transportation such as subways and buses, and the convenience is significantly improved. [0003] The IC card needs to be as close as possible to the ISO international standard card size (length 85.6mm, width 54mm, thickness 0.76mm) so as to be easy to carry and hold. In the case of ensuring the size of the international standard card, in order to set the antenna and transformer necessary f...

AI Technical Summary

Problems solved by technology

[0008] In terms of strength, the smaller the bonding area of ​​the sensor IC chip, the lower the bonding strength, which will cause peeling during the IC card manufacturing process

[0009] In addition, the thickness of the sensor IC chip that can be mounted in the IC card with a thickness of 0.76mm must be thinner than this thickness, and the thinner the sensor IC chip on the laminated silicon wafer, the weaker its resistance to physical external forces

[0010] Similarly, the IC card that is carried around is under the danger of being damaged by electrostatic gas discharge. In order to read fingerprints, the sensor IC chip that is directly touched by the finger is even more dangerous.

Especially the control circuit mounted on the laminated surface of the sensor IC chip is even more vulnerable to discharge damage

[0011] Fingerprint authentication has the problem of falsified fingerprints in terms of security. For IC cards that provide multiple services and have high added value, necessary countermeasures have to be taken

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