Middle frame assembly, preparation method of middle frame assembly and electronic equipment

Abstract

The embodiment of the invention provides a middle frame assembly, a preparation method of the middle frame assembly and electronic equipment, and relates to the technical field of communication equipment. The middle frame assembly is used for being arranged on the electronic equipment. The middle frame assembly comprises: a middle frame body; an antenna laid on the middle frame body; an oxide film, wherein the exterior of the antenna is coated with the oxide film, and the position, located at the feed part of the metal sheet, of the oxide film is a hollow area; and a conductive coating at least covering the hollow area. The middle frame assembly, the preparation method of the middle frame assembly and the electronic equipment provided by the embodiment of the invention are used for improving the contact reliability of the metal elastic piece and the metal sheet so as to improve the receiving and transmitting stability of antenna signals.

Description

Technical field [0001] This application relates to the technical field of communication equipment, and in particular to a middle frame assembly, a method for preparing the middle frame assembly, and electronic equipment. Background technique [0002] The antenna in the mobile phone is covered with an oxide film, that is, the antenna is protected by the oxide film to prevent the antenna from being oxidized and affecting the antenna signal transmission. In the prior art, refer to figure 1 , The antenna in the mobile phone (not shown in the figure, the antenna is laid on the middle frame 03 of the mobile phone) is electrically connected to the transceiver module (not shown in the figure) on the circuit board 01 through the metal elastic member 02, and one end of the metal elastic member 02 is connected to The signal line on the circuit board 01 is connected. The signal line is connected to the transceiver module for transmitting and receiving antenna signals. The other end of the me...

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Problems solved by technology

[0003] However, the technical problem of this structure is: after removing the oxide film in the laser engraving area, the oxide film in the laser engraving area will not be removed cleanly, and even the radium engraving area will appear uneven, which will lead to the metal elastic part and the antenna. The contact of the feeding part is unreliable, so as to affect the sending and receiving of antenna signals, such as figure 2 Shown is the harmonic margin on the surface where the metal elastic part and the antenna are in contact with multiple mobile phones with this structure when the current is 200mA, and the curve formed by multiple harmonic margins is curve P12 and straight line P11 is the limit value of the harmonic margin on the surface where the metal elastic member contacts the antenna. It can be seen from the figure that multiple harmonic margins on the surface where the metal elastic member contacts the antenna are dispersed, and there are many The phenomenon of limit value, that is, due to the unreliable contact between the metal elastic part and the feeder part of the antenna, there is a phenomenon of clutter, which will affect the stability of the antenna sending and receiving signals

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