Near field communication (NFC) antenna based on static discharge protection below electronic equipment screen

Abstract

The invention provides a near field communication (NFC) antenna based on static discharge protection below an electronic equipment screen. The NFC antenna comprises copper wirings, a PI substrate, a colloide, copper via holes, ink and copper blocks, wherein NFC copper wirings and static discharge copper wirings are arranged on a surface of the PI substrate, the discontinuous copper blocks are arranged on the other surface of the PI substrate, the NFC copper wirings form a path of two ports, the static discharge copper wirings form a breakage path of the two ports, and a plurality of copper wirings are respectively led out from the two ports formed by static discharge and are respectively connected with the discontinuous copper blocks on the other surface of the PI substrate by the copper via holes. By the NFC antenna, an NFC circuit can be prevented from impact of static discharge to cause permanent damage, and the transmission of an NFC signal can also be enabled not to be interfered by static discharge; and moreover, the NFC antenna is simple and compact in integral structure and is wide in applicability.

Description

technical field [0001] The invention relates to the field of NFC antenna design, in particular to an NFC antenna based on electrostatic discharge protection under the screen of an electronic device. Background technique [0002] NFC near-field communication technology is evolved from the integration of non-contact radio frequency identification and interconnection technologies. It combines inductive card readers, inductive cards and point-to-point functions on a single chip to identify compatible devices within a short distance. and data exchange. The operating frequency is 13.56MHz, and it provides consumers with valuable transactions through proximity sensing, which is a widely discussed and realized function. When implementing various integration and implementation methods of NFC, one of the impacts that cannot be ignored is the impact of electrostatic discharge on the entire NFC function through the NFC antenna. The wrong command caused by the current mainstream NFC ant...

AI Technical Summary

Problems solved by technology

[0007] None of the NFC antennas in the above literature can solve the problem of electrostatic discharge protection, so it is necessary to propose an NFC antenna based on the electrostatic discharge protection under the screen of the electronic device, which can protect the NFC circuit from permanent damage caused by the impact of electrostatic discharge, and can also Ensure that NFC signal transmission will not be disturbed by electrostatic discharge

Images