A kind of manufacturing method of wireless charging antenna and wireless charging antenna

Abstract

The present invention proposes a method for manufacturing a wireless charging antenna and the wireless charging antenna, including: providing a circuit board layer formed with mutually insulated coils and short wires; growing a solder resist ink layer on the circuit board layer, the solder resist ink layer There are openings corresponding to the second process contact, the first functional contact, the first process contact and the second functional contact on the top, and the solder resist ink layer is cured; deoxidation corresponds to the second process contact, the first function contact The oxide layer of the copper layer formed at the openings of the contact, the first process contact and the second functional contact; a jumper layer is grown on the opening corresponding to the first process contact and the second process contact, and the jumper The line layer is electrically connected to the first process contact and the second process contact; a metal protection layer is grown on the jumper layer and the corresponding openings of the deoxidized first functional contact and the second functional contact. The invention can reduce the manufacturing cost, reduce the thickness of the antenna, and improve the overall signal transmission performance of the antenna.

Description

technical field [0001] The invention belongs to the field of electronic circuit communication, and in particular relates to a method for manufacturing a wireless charging antenna and a correspondingly manufactured wireless charging antenna. Background technique [0002] The wireless charging antenna uses the principle of magnetic resonance, and can use the air between the charger and the device to transmit charges to realize wireless charging between the device and the charger. For example, it can be used in the charging of wireless phones. The existing wireless charging antenna includes A substrate layer formed by a flexible circuit board, a coil and a short wire are arranged on the substrate layer, and one end of the coil and one end of the short wire are electrically connected through the jumper layer, and the substrate layer and the jumper layer are also formed on or between the substrate layer and the jumper layer. The other layers of the jumper layer form the antenna, ...

AI Technical Summary

Problems solved by technology

[0002] The wireless charging antenna uses the principle of magnetic resonance, and can use the air between the charger and the device to transmit charges to realize wireless charging between the device and the charger. For example, it can be used in the charging of wireless phones. The existing wireless charging antenna includes A substrate layer formed by a flexible circuit board, a coil and a short wire are arranged on the substrate layer, and one end of the coil and one end of the short wire are electrically connected through the jumper layer, and the substrate layer and the jumper layer are also formed on or between the substrate layer and the jumper layer. The other layers of the jumper layer form the antenna, and the conductivity of the jumper layer is not as good as that of the copper conductor, making the jumper layer the weakest part of the transmission signal, which affects the overall performance of the antenna. Layer protection layer and isolation layer, the increase in the number of layers increases the thickness of the antenna, and increases the manufacturing process burden of the antenna, increasing the manufacturing cost

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