Spraying process for laser-direct-structuring (LDS) antenna on outside surface of mobile phone plastic shell

Abstract

The invention discloses a spraying process for a laser-direct-structuring (LDS) antenna on an outside surface of a mobile phone plastic shell. The spraying process comprises the following steps of providing the mobile phone plastic shell of injection molding; irradiating the specified position of the outside surface of the mobile phone plastic shell by using a focused laser beam to activate the specified graph part of the outside surface of the mobile phone plastic shell, and roughing the surface of the graph part; electroplating the graph part activated by laser with a metal film; spraying undercoat to be used for covering the electroplated metal film on the outside surface of the mobile phone plastic shell; and spraying finishing coat to be used for forming a formed part of the mobile phone plastic shell. The primary spraying thickness of the undercoat is 40-60mum, the spraying thickness of the finishing coat is 10-20mum, the undercoat is acrylic coating, and the finishing coat is ultraviolet (UV) coating. According to the spraying process for the LDS antenna on the outside surface of the mobile phone plastic shell disclosed by the invention, the height difference between the LDS antenna and the mobile phone plastic shell is effectively handled during the manufacturing process of a normal mobile phone plastic shell, and therefore, not only is the using function of the LDS antenna satisfied but also the appearance surface of the mobile phone plastic shell is not influenced. Meanwhile, a manufacturing process is simple and is good in effect.

Description

technical field [0001] The invention relates to the technical field of LDS antenna manufacturing and molding, in particular to the LDS antenna spraying process on the outer surface of a mobile phone plastic case. Background technique [0002] LPKF invented the laser structuring technology, LDS (Laser-Direct-structuring) laser direct structuring technology, the basic principle of this process is to selectively activate the surface of the injection molded part with laser before metallization, that is, to carry out the surface of the part Treatment to facilitate the process of metal deposition during electroplating. The plastic used for laser activation is a modified plastic. On the one hand, laser irradiation causes the organic metal compound to release metal particles, which is beneficial to metal deposition; on the other hand, it causes the breakage of the polymer molecular chain to roughen the surface. In this way, the surface of the modified plastic after laser activation...

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Problems solved by technology

[0004] The authorized announcement number is: CN202084635U's utility model patent discloses a laser-formed multi-layer GPS antenna. Although the antenna body can be set on the mobile phone shell, the antenna body is set on the mobile phone shell, which is easy to use The main body of the antenna is worn out, which affects the use of the antenna

[0005] The application publication number is: CN102610899A, a laser forming antenna, which attaches a film-coated film to the surface of the laser-produced antenna, and the height difference between the antenna and the plastic shell is covered by the film-covered film, but the cost is too high , the process is too complicated

[0006] The application publication number is: CN102931471A, the integrated manufacturing method of the mobile terminal casing and antenna, which also adopts the method of attaching a protective film to the antenna area forming the circuit structure to protect the circuit structure of the antenna area, but the cost is too high and the process is too complicated

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