Edge covering type ferrite product and processing method thereof

Abstract

The invention relates to an edge covering type ferrite product and a processing method thereof. The ferrite product comprises a ferrite, and a single-sided adhesive and a double-sided adhesive which are adhered to the two sides of the ferrite respectively. The edges of the double-sided adhesive are adhered to the edges of the single-sided adhesive, and the edges of the ferrite are completely covered between the single-sided adhesive and the double-sided adhesive. During the machining, the ferrite is subjected to machine-shaping at first, then the single-sided adhesive and the double-sided adhesive are adhered to the two side surfaces of the ferrite respectively, and the edges of the double-sided adhesive are adhered to the edges of the single-sided adhesive. Compared with the prior art, the ferrite are subjected to edge covering by means of the double-sided adhesive and the single-sided adhesive, thus the normal use of the ferrite is ensured, the adhesion of the ferrite product and a flexible circuit board is facilitated, and the falling of particles on a cross section of the ferrite edges formed by laser cutting or die stamping can be avoided, thereby ensuring the normal functionsof the circuit board and a mobile phone, and being easy in machining.

Description

Technical field [0001] The invention belongs to the technical field of ferrite products, and relates to an edged ferrite product and a processing method thereof. Background technique [0002] Nowadays, with the promotion of cashless consumption methods, payment methods such as two-microcode, barcode and NFC (Near Field Communication) have been widely used, making people more and more dependent on mobile phones. Among them, mobile phones that support NFC need to have a built-in NFC chip. In the NFC chip, ferrite plays an important role, such as improving the performance of the NFC chip, effectively increasing the sensing distance, and ensuring low magnetic loss. When ferrite is used, it is generally bonded to the corresponding circuit soft board, and then installed in the mobile phone together. [0003] Existing ferrite products generally set a layer of glue on one of the sides of the ferrite, and attach the release film to the glue surface. When using, tear off the release film t...

AI Technical Summary

Problems solved by technology

However, since the ferrite contains too much iron metal, when the ferrite is laser cut or die (cold die) stamped, particles will be generated on the cut section or punched section, and these particles not only affect the appearance of the product, but also With the long-term use of the mobile phone, under the influence of the environment (such as dropping the mobile phone), the particles on the ferrite section will fall on the circuit board

Because the circuit board has been used for a long time, it will be partially oxidized. Once these falling particles fall on the oxidized part of the circuit board, when the mobile phone is in normal use, the whole mobile phone main board or part of the main board circuit will be connected in series. Affect the normal use of the mobile phone, and even cause serious damage to the mobile phone

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