TWI533508B - Method of manufacturing stereo antenna - Google Patents

Description

Stereo antenna manufacturing method

The invention relates to a method for manufacturing a stereo antenna, in particular to an antenna which can be manufactured at a lower cost, and the size and shape of the antenna are not limited, and can be fabricated on a non-planar substrate, thereby reducing the entire antenna module. Group height stereoscopic antenna manufacturing method.

Due to advances in technology and the trend of humanization of products, many communication electronic products, such as smart phones, mobile phones, notebooks, tablet personal computers, personal navigation Mobile devices such as Personal Navigation Device (PND) and Global Position System (GPS) use flexible printed circuit boards (FPCBs) for the manufacture of antennas. However, when a flexible circuit board is attached to a non-planar surface, especially in a three-dimensional (3D) hyperboloid, it may be turned over because it cannot be completely affixed, so a flexible circuit board is suitable. A single curved surface between a two-dimension (2D) plane and a three-dimensional (3D) space (2.5D). Therefore, when the antenna needs to be placed on a non-planar surface, it is mostly implemented by Laser Direct Structure (LDS).

Laser direct structuring technology projects some special laser-activated plastics into a predetermined body structure, and then uses a specific wavelength of laser to activate the metal grains incorporated in the plastic, and defines the antenna. Pattern, finally Then carry out the metallization process.

However, the above-mentioned plastics must be doped with a metal catalyst, and the metal catalysts of different compositions must be doped for different materials of plastics and materials, and the conditions for laser activation are different, and the laser wavelength and metallization must be re-adjusted. Control parameters, therefore, the LDS process must take laser equipment of a specific wavelength and metallization equipment or control parameters with different conditions, which makes the equipment and manufacturing cost more expensive. The antenna made of plastic with metal catalyst is easy to affect the quality of antenna transmission and reception because of metal additives.

In view of the above, the present invention provides an antenna that is manufactured at a lower cost, and the size and shape of the antenna are not limited, and can be fabricated on a non-planar substrate, thereby achieving a stereoscopic antenna that reduces the height of the entire antenna module. Manufacturing method for its main purpose.

In order to achieve the above object, the manufacturing method of the present invention comprises the steps of: providing a substrate having a predetermined stereo configuration; covering a surface of the substrate with a peelable polymer protective layer; Forming a patterned polymer protective layer; performing metallization treatment to deposit a metal thin film layer, and the metal thin film layer covers the surface of the patterned polymer protective layer and is not covered by the patterned polymer protective layer The surface of the material is stripped, and the patterned polymer protective layer is stripped, and the patterned polymer protective layer and the metal thin film layer thereon are peeled off from the surface of the substrate to form a patterned metal thin film layer; finally, the patterned metal thin film layer is formed The surface is subjected to electroless plating to complete the stereoscopic antenna.

With the above structural features, the manufacturing method of the present invention is not limited by size and shape, and a stereo antenna can be fabricated on a non-planar substrate, thereby reducing the height of the entire antenna module.

According to the above structural features, the polymer protective layer may be an epoxy tree a mixture of fat, variability acrylic, polyester, acetate resin, ethyl acetate and ethanol.

The metallization treatment is performed by depositing metal on the surface of the substrate and the patterned polymer protective layer by sputtering or vapor deposition to form a metal thin film layer; the metal target used for the deposition is selected from nickel (Ni) and chromium ( One of Cr), cobalt (Co), palladium (Pd), nickel (Ni), tin (Sn), copper (Cu) or a composite thereof.

The stripping of the patterned polymer protective layer may be performed by a water washing method.

The electroless plating metal is selected from the group consisting of nickel (Ni), copper (Cu), gold (Au), silver (Ag), tin (Sn), chromium (Cr), and palladium (Pd). One. .

1‧‧‧Substrate

11‧‧‧ surface

2‧‧‧ polymer protective layer

21‧‧‧ patterned polymer protective layer

3‧‧‧Metal film layer

31‧‧‧ patterned metal film layer

4‧‧‧Electrochemical coating

The first figure is a block diagram of the process of the manufacturing method of the present invention.

2 to 7 are schematic views showing the flow of the manufacturing method in the present invention.

As shown in the flow chart of the manufacturing method of the present invention, the manufacturing method of the present invention basically comprises the following steps: providing a substrate 1, please also refer to the second figure, the substrate 1 has a predetermined A three-dimensional configuration in which the substrate 1 has a non-planar surface 11.

The substrate surface 11 is covered with a strippable polymer protective layer 2. As shown in the third figure, the polymer protective layer 2 can be epoxy resin, variability acrylic, polyester resin, cellulose acetate resin, a mixture of ethyl acetate and ethanol.

Performing a patterning of the eagle carving to remove a part of the polymer protective layer, as shown in the fourth figure, to form a patterned polymer protective layer 21; wherein the above-mentioned patterning method of the ray pattern is to use a laser which is commonly used in the market. The machine, that is, the laser light of the laser machine is not limited to a specific wavelength. a laser emitted by the above laser machine The light is abutted on the polymer protective layer to remove the protective layer of the polymer that the laser light abuts. In the process of removing a part of the polymer protective layer by using a laser machine, the laser light can be moved according to design or requirement, so that the removed part of the polymer protective layer forms a specific pattern, so that the polymer protective layer is formed into A patterned polymer protective layer 21 of a specific pattern.

Metallization treatment is performed to form a metal thin film layer 3, as shown in FIG. 5, and the metal thin film layer 3 covers the surface of the patterned polymer protective layer 21 and is not covered by the patterned polymer protective layer 21. The substrate surface 11; the metallization treatment is performed by depositing metal on the surface of the substrate and the patterned polymer protective layer by sputtering or vapor deposition to form a metal thin film layer; the metal target used for the deposition is selected from nickel One of (Ni), chromium (Cr), cobalt (Co), palladium (Pd), nickel (Ni), tin (Sn), copper (Cu) or a composite thereof.

The patterned polymer protective layer 21 is stripped, and the patterned polymer protective layer 21 and the metal thin film layer 3 thereabove are peeled off from the substrate surface 11, as shown in FIG. 6, to form a patterned metal thin film layer 31. And the stripping of the patterned polymer protective layer 21 can be stripped by a water washing method.

The surface of the patterned metal thin film layer 31 is subjected to electroless plating 4 treatment, and as shown in the seventh figure, the stereoscopic antenna is completed, and the electroless plating metal is selected from the group consisting of nickel (Ni), copper (Cu), gold (Au), and silver ( One of one or more composite metals of Ag), tin (Sn), chromium (Cr), and palladium (Pd).

It is worth mentioning that the manufacturing method of the present invention is not limited by size and shape, and a stereo antenna can be fabricated on a non-planar substrate, thereby reducing the height of the entire antenna module. Moreover, the invention does not need to have the plastic added with the metal catalyst used in the LDS process, which not only has low material cost, but also does not need to adjust the laser wavelength and metallization control parameters in the process, the process is relatively simple, and the finished stereo antenna product is completed. Transceiver quality is better.

In summary, the present invention provides a preferred method for manufacturing a stereoscopic antenna, and an application for an invention patent according to the law; the technical content and technical features of the present invention have been disclosed above, but those skilled in the art may still be based on the present disclosure. The invention is to be construed as being limited and modified by the spirit of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

Claims (5)

A method for manufacturing a stereoscopic antenna includes the steps of: providing a substrate having a predetermined stereo configuration; covering a surface of the substrate with a strippable polymer protective layer; performing a patterning of the laser to form a Patterning the polymer protective layer; performing metallization treatment to deposit a metal thin film layer, and the metal thin film layer covers the surface of the patterned polymer protective layer and the surface of the substrate not covered by the patterned polymer protective layer Stripping the patterned polymer protective layer, allowing the patterned polymer protective layer and the metal thin film layer thereon to be peeled off from the surface of the substrate to form a patterned metal thin film layer; and performing the surface of the patterned metal thin film layer Electroless plating treatment to complete the stereo antenna. The method for manufacturing a stereoscopic antenna according to claim 1, wherein the polymer protective layer is a mixture of an epoxy resin, a variability acryl, a polyester, a cellulose acetate resin, ethyl acetate, and ethanol. The method for manufacturing a stereoscopic antenna according to claim 1 or 2, wherein the metallizing treatment is performed by depositing a metal on the surface of the substrate and the patterned polymer protective layer by sputtering or vapor deposition to form a metal thin film layer; The metal target used is selected from one of nickel (Ni), chromium (Cr), cobalt (Co), palladium (Pd), nickel (Ni), tin (Sn), copper (Cu) or a composite thereof. One of them. The method of manufacturing a stereoscopic antenna according to claim 1 or 2, wherein the stripping of the patterned polymer protective layer is performed by a water washing method. The method of manufacturing a stereoscopic antenna according to claim 1 or 2, wherein the electroless plating metal is selected from the group consisting of nickel (Ni), copper (Cu), gold (Au), silver (Ag), tin (Sn), and chromium ( One of one or more composite metals of Cr) and palladium (Pd).