KR20060065837A - Rf antenna equipped inside a portable wireless communication device and method of production thereof - Google Patents

Abstract

The present invention relates to a method of manufacturing a radio frequency (RF) antenna embedded in the inner, middle and outer sides of a main body cover or a battery cover of a portable wireless communication device, and an RF antenna manufactured by the manufacturing method. The RF antenna manufactured according to the present invention is generally provided with two battery packs per body of a portable wireless communication device when the antenna circuit is configured to be attached to a conventional battery cell, so that as many antennas as the number of battery packs are Contrary to necessity, only one antenna is mounted on the inside, the middle and the outside of the body cover of the portable radio, and in the inner pack the inside, the middle and the outside of the battery's outermost cover. Since only one antenna is mounted, there is a cost reduction effect due to the reduction of the number of antennas, and also the thickness of the battery pack is reduced due to the reduction of the thickness of the antenna itself, which can be advantageously used for miniaturization and slimming of a portable wireless communication device.

Description

RF antenna embedded in portable wireless communication device and manufacturing method therefor {RF ANTENNA EQUIPPED INSIDE A PORTABLE WIRELESS COMMUNICATION DEVICE AND METHOD OF PRODUCTION THEREOF}             

1 is a flowchart schematically illustrating a method for manufacturing an RF antenna embedded in a battery pack of a portable wireless communication device.

2 is a diagram illustrating an RF antenna configured to be attached to a battery cell of a conventional portable wireless communication device.

3 is a view showing an RF antenna directly configured inside the battery cover of a portable wireless communication device according to the present invention.

4 is a diagram illustrating an antenna circuit showing various patterns and jig for forming an antenna;

<Explanation of symbols for the main parts of the drawings>

101: battery cover 102: film copper plate antenna circuit

103: battery pack or cell 104: resin film

105: adsorbent for blocking electromagnetic waves 106: under case

107: antenna circuit configured directly on the cover

The present invention relates to a method of manufacturing a radio frequency (RF) antenna embedded in the inner, middle and outer sides of a main body cover or a battery cover of a portable wireless communication device, and an RF antenna manufactured by the manufacturing method.

Recently, due to the rapid development of informatization, portable wireless communication devices have been spread in large quantities, and beyond the scope of simple communication means, they have functioned as payment means such as credit cards and electronic money as well as the Internet. The demand for miniaturization and slimming is increasing continuously along with the functional functions.

In general, an antenna for general communication of a portable wireless communication device is a whip type, and a part of the antenna for protruding outward and a matching part thereof is formed in the device. The antenna having the above-mentioned additional functions embedded in the apparatus is a film copper foil (FPCB) type antenna manufactured by corrosion processing, and adheres an antenna formed by corrosion processing copper foil between two resin films. It was manufactured by attaching an absorber for electromagnetic wave shield, attaching it to a cell with a double-sided tape or the like, and then soldering and connecting the terminal portion. Since the composition of the conventional film copper-clad antenna as described above has a thickness of about 0.7 mm or more, it serves as a disadvantage in miniaturization and slimming of a portable wireless communication device.

Accordingly, the present inventors have made a thorough study to overcome the above disadvantages, and as a result, the antenna circuit is configured by stamping or printing the conductive circuit inside, the middle, and the outside of the main body cover or the battery cover of the portable wireless communication device. The present invention has been completed by incorporating into an apparatus.

SUMMARY OF THE INVENTION The present invention relates to a method for manufacturing a radio frequency (RF) antenna embedded in the inside, the middle, and the outside of a body cover or a battery cover of a portable wireless communication device, which is miniaturized, slimmed, and cost effective.

Another object of the present invention is to configure the circuit by the method of hot-stamping or printing so that it can be mass-produced quickly and easily and the shape of the antenna circuit can be easily modified, so that the inside of the body cover or the battery cover of the portable wireless communication device, It is to provide an RF antenna embedded in the middle and the outside.

In order to achieve the above object, the present invention,

a) manufacturing a jig to directly form antenna circuits corresponding to the inner, middle and outer sides of the body cover or battery cover of the desired portable wireless communication device;

b) configuring the antenna circuit with a hot-stamping or printing method with a conductive material inside, middle and outside of the body cover or battery cover of the portable radio communication device; And

c) connecting the antenna circuit of the main body cover or the battery cover of the portable wireless communication device to the transceiver of the portable wireless communication device in various terminal forms;

Provided, comprising a method of manufacturing an RF antenna.

In one embodiment of the invention, in step a) a variety of patterns on the inside, middle and outside of the body cover or battery cover of the portable wireless communication device, for example a general patch-shaped antenna shape, character shape, the manufacturer's logo (logo) The antenna circuit may be formed of a self-charging charm, an advertisement pattern, or the like (see FIG. 4). In FIG. 4, A is a pattern mounted on the outside of the battery cover, B is a pattern mounted on the outside of the portable radio communication device body, C is a pattern mounted on the inside of the battery cover , D denotes a general jig form used for forming an antenna circuit, and E denotes an azimuth-shaped jig pattern.

In the method of manufacturing the RF antenna embedded in the inner, middle and outer sides of the main body cover or the battery cover of the portable wireless communication device of the present invention, first, the shape of the antenna suitable for the use of any portable wireless communication device can be determined. Commonly known antenna structures include feeding structures, dual polarizations and circular polarizations. Feeding structures include, for example, device coupling patches, radiation coupling patches, grooves, and the like. Combined patches, line patches and coaxial patches include bipolar polarized wire patches, coaxial patches and grooved patches, and circular polarized waves include dual feed structures and 45 ° inclined circular polarizations. When the circular polarization is used, the transmission characteristic is excellent, and the multiple reflection interference is small. In addition, since polarization loss is small and various signals can be transmitted multiplely while changing the polarization position, it is mainly used for broadcast communication. When the shape of the antenna is determined, the antenna circuit is directly configured on the inside, the middle, and the outside of the cover or battery cover of the portable radio communication apparatus, or a separate flat plate, for example, an injection molded product made of polycarbonate (PC) and After configuring the antenna circuit in a laminated coating film (laminated coating film) it can be mounted on the inside, middle or outside of the cover of the main body of the portable radio or battery cover.

In another embodiment of the invention, the antenna circuit in step b) is a conductive material, preferably conductive paint, conductive ink, conductive adhesive, on the inside, middle and outside of the body cover or battery cover of the portable radio communication device. It may be directly formed by hot-stamping or printing with at least one of a conductive paste, a foil of a metallic material (eg, gold foil, silver foil, copper foil, aluminum foil, etc.), wherein the method of printing is silk printing. ), Paint jet printing, spray painting, injection dispenser, pad printing, dipping, curing, brushing Can be selected from one or more, and the method of hot-stamping can utilize any one or more of foils of metallic materials, such as gold foil, silver foil, copper foil, aluminum foil, and the like. have.

In another embodiment of the present invention, when the antenna circuit is configured by the method of paint jet printing and scanning ejection printing in step a), an antenna circuit shape drawing is programmed into an embedded central processing unit to provide a portable wireless communication device. An antenna circuit may be formed on the outer side of the main body cover or the battery cover in various patterns, for example, a general patch type antenna shape, a character shape, a manufacturer's logo, a body charm, an advertisement pattern, and the like.

Various RF antennas built into the inner, middle and outer sides of the main body cover or the battery cover of the portable wireless communication device according to the present invention can be manufactured by the following method.

In the case of hot-stamping, first, a film plate for fabricating a jig is manufactured according to a shape of an antenna circuit suitable for a purpose, a jig made of rubber material, and an epoxy resin is used to fix a body cover or a battery cover of a portable wireless communication device. The lower jig may be manufactured, but when the stamping surface is uneven, a separate flat plate (for example, an injection molded product and a laminated coating film of PC material) may be used. Subsequently, after setting up the hot-stamping machine, the foil is used to stamp the body cover or battery cover of the portable radio communication device and a separate flat plate (for example, a PC material injection molding and a laminated coating film). By performing the above, an RF antenna mounted on an inner side, a middle side, or an outer side of a main body cover or a battery cover of a portable wireless communication device is manufactured.

In the case of silk printing, first, a film plate for screen production is manufactured according to the shape of an antenna circuit suitable for a purpose, a silk screen for silk printing is manufactured, and then a body cover or a battery cover of a portable wireless communication device with an epoxy resin. To manufacture a lower jig for fixing, but if the printing surface is uneven, a separate flat plate (for example, injection molding and laminated coating film of PC material) can be used. Then, using a silk screen absorber, the body cover or battery cover of the portable wireless communication device with a conductive paint such as conductive paint, conductive ink, conductive adhesive and conductive paste, and a separate flat plate (e.g., For example, an RF antenna mounted on an inner side, a middle side, or an outer side of a main body cover or a battery cover of a portable wireless communication device may be manufactured by silk printing on a PC material injection molding and a laminated coating film).

For paint jet printing, first, program the antenna circuit diagram according to the application to the central processing unit built in the paint jet printer, and then use the epoxy resin to cover the body cover or battery cover of the portable radio. While manufacturing the lower jig for fixing, it is possible to use a separate plate (for example, injection molding and laminated coating film of PC material) when the printing surface is uneven. Then, using a paint jet printer, the body cover or battery cover of the portable wireless communication device with a conductive paint such as conductive paint, conductive ink, conductive adhesive and conductive paste, and a separate flat plate (e.g., an injection made of PC material) And a laminated coating film) to manufacture an RF antenna mounted on an inner side, a middle side, or an outer side of a main body cover or a battery cover of a portable wireless communication device.

In the case of scanning ejection printing, first, an antenna circuit shape drawing suitable for a purpose is programmed into a central processing unit built in the dispenser, and then the lower side for fixing the body cover or the battery cover of a portable wireless communication device with epoxy resin. If the jig is manufactured, but the printing surface is uneven, it is possible to use a separate flat plate (for example, injection molding and laminated coating film of PC material). Subsequently, the body cover or battery cover of the portable wireless communication device with a conductive paint, for example, a conductive paint, a conductive ink, a conductive adhesive, and a conductive paste, using an auto syringe dispenser, and a separate flat plate (for example, For example, an RF antenna mounted on an inner side, a middle side, or an outer side of a main body cover or a battery cover of a portable wireless communication device may be manufactured by printing on an injection molded product and a laminated coating film of a PC material.

In the printing method as described above, the antenna of the present invention can be manufactured quickly and easily in large quantities using a jig manufactured according to the shape of the product, and when necessary, the shape of the antenna circuit can be easily switched to suit the intended use. It is clearly distinguished from the conventional film copper foil RF antenna manufactured by uniformly corroding. In addition, in the case of using the silver paste, high transmission and reception efficiency and excellent electromagnetic wave blocking effect which are clearly distinguished from the conventional film copper foil RF antenna can be expected.

In another embodiment of the present invention, in step c), the transceiver unit of the main body of the portable wireless communication device and the antenna circuit configured as described above are provided with a terminal, preferably a spring terminal, a pin spring terminal, an uneven terminal, and a socket. It may be connected by any one or more of the clips, and may be present in a form in which the terminal is coupled to the transceiver of the portable wireless communication device and the antenna circuit configured as described above. Although the inside of the battery pack covered by the battery cover is somewhat different depending on the design shape of the portable wireless communication device, since there is enough space to form a terminal for connecting the transceiver of the main body of the portable communication device with the component-mounted antenna, You can configure them to connect with each other.

In addition, the present invention

i) constructing the antenna circuit by hot-stamping or printing with a conductive material on a separate plate;

ii) attaching a separate flat plate having an antenna circuit in step i) to the inside, middle and outside of the body cover or the battery cover of the portable radio communication device; And

iii) connecting the mounted antenna circuit to a transceiver of a main body of a portable wireless communication device;

It relates to a method of manufacturing an RF antenna, including.

In one embodiment of the present invention, the method according to the present invention provides a method of manufacturing the RF antenna when the antenna cannot be directly configured on the inside, the middle and the outside of the main body cover or the battery cover of the portable radio communication device. As described above, an antenna circuit may be formed on a separate flat plate, for example, an injection molded product made of PC material and a laminated coating film. When the laminated coating film of the separate plate is used in step i), an antenna circuit is formed of a conductive material on one surface of the inner side of the two laminated coating films, and then coated by thermal compression on the laminated coating film. The antenna circuit can be configured. In step ii), an antenna circuit manufactured by a stamping or printing method on a separate flat plate, for example, an injection molded product and a laminated coating film of the PC material, may be mounted on a body cover or a battery cover of the portable wireless communication device. When mounted on the inside, middle and outside, any one or more of ultrasonic welding, adhesive bonding, tapping, inmoldig injection, pressing and insertion can be used.

In addition, the RF antenna circuit formed on the inner, middle and outer sides of the main body cover or battery cover of the portable wireless communication device of the present invention and the RF antenna circuit formed on a separate flat plate are directly printed with a conductive paint containing silver paste. The lower surface has an electromagnetic shielding effect due to its own characteristics, so it is not necessary to use a separate electromagnetic shielding material.In other cases, the electromagnetic shielding material, preferably paint, is used to protect the antenna circuit and shield harmful electromagnetic waves. , Ink, adhesive, paste, metal material (e.g., gold foil, silver foil, copper foil, aluminum foil) foil, thin film treated with any one or more of EMI paints, preferably electromagnetic shielding film, tape, flat plate, EMI And attaching or treating any one or more of the paints to the surface portion of the antenna circuit to shield electromagnetic waves. .

In addition, the present invention provides an RF antenna embedded in the inside, the middle and the outside of the body cover or the battery cover of a portable wireless communication device manufactured by a method of stamping or printing. Conventional antennas are typically provided with two cells in the case of an inner pack, with one antenna in each cell. In addition, the conventional film copper plate-shaped antenna is manufactured by etching a film copper plate to fabricate an antenna circuit, depositing it between two films made of resin, attaching an electromagnetic wave shielding adsorbent, and then soldering it to the terminal portion. It is manufactured by a method of making, and the film copper plate-shaped antenna thus prepared has a thickness of the antenna itself is 0.7 mm or more (see Fig. 2). As described above, the conventional film copper foil antenna is not only difficult to reduce the thickness of the portable wireless communication device due to its thickness, but also a lot of defective parts can be manufactured by hand in the assembly step. The disadvantage is that it can. On the contrary, the thickness of the antenna manufactured according to the present invention is less than 0.2 mm, which can reduce the thickness of 0.5 mm or more compared to the conventional antenna, which can be considered to contribute to miniaturization and slimming of a portable wireless communication device (FIG. 3). Reference). In addition, in the manufacture of the antenna of the present invention, due to the automation and the simplification of the manufacturing step, it is possible to easily mass-produce while reducing the defective rate at the time of manufacture. In addition, in the case of the inner pack, even if one or more battery packs are provided in one portable wireless communication device, since only one antenna is mounted, the cost reduction effect is also great.

The invention not only contributes to the miniaturization and slimming of the portable communication device due to the reduction in the number of antennas embedded in the battery cover, and consequently the battery thickness, but also in the case of an inner pack, one or more batteries in one portable radio communication device. Even if a pack is provided, only one antenna needs to be mounted, thereby reducing costs, and the main body cover or battery of a portable wireless communication device that can be manufactured quickly and easily in large quantities using a jig easily manufactured according to the shape of the product. Provided is a method of manufacturing an RF antenna embedded in the inner, middle and outer sides of a cover.

In addition, the present invention can be mass-produced quickly and easily, and embedded in the battery cover of a portable wireless communication device by hot-stamping or printing so that the shape of the antenna circuit can be easily modified if necessary. RF antennas have been provided.

Claims (15)

The present invention relates to a method for manufacturing a radio frequency (RF) antenna embedded in the inner, middle, and outer sides of a main body cover or a battery cover of a portable wireless communication device. a) manufacturing a jig to directly form antenna circuits corresponding to the inner, middle and outer sides of the body cover or battery cover of the desired portable wireless communication device; b) configuring the antenna circuit with a hot-stamping or printing method with a conductive material on the inside, middle and outside of the body cover or battery cover of the portable radio communication device; And c) connecting the antenna circuit of the main body cover or the battery cover of the portable wireless communication device to the transceiver of the portable wireless communication device in various terminal forms; Comprising a method of manufacturing a radio frequency antenna. The method of claim 1, wherein the antenna pattern of the step of manufacturing the jig in the step a) is any one or more of the general patch-like antenna shape, the shape of the character, the manufacturer's logo (logo), amulets for advertising, advertising patterns. The manufacturing method of a radio frequency antenna. The method of claim 1, wherein the conductive material of step b) is any one or more of a conductive paint, a conductive ink, a conductive adhesive, a conductive paste, and a metallic foil. . The method of manufacturing a radio frequency antenna according to claim 3, wherein the metal material is made of at least one of gold foil, silver foil, copper foil, and aluminum foil. The method of claim 1, wherein the method of printing in step b) comprises silk printing, pad printing, paint jet printing, syringe dispenser, spray painting. A method of manufacturing a radio frequency antenna, characterized in that any one or more of painting, dipping, curing, brushing. A radio frequency antenna according to claim 1, wherein the antenna circuit shape diagram is programmed in the embedded central processing unit when the antenna circuit is configured by the method of paint jet printing and scanning ejection printing in step a). Method of preparation. The method of claim 1, wherein in the step c), the form of the terminal connecting the transmitting and receiving unit of the portable wireless communication device and the component-mounted antenna circuit is any one of a spring terminal, a pin spring terminal, an uneven terminal, a socket and a clip. A method for manufacturing a radio frequency antenna, characterized in that one or more. The present invention relates to a method for manufacturing a radio frequency antenna separately embedded in the inner, middle and outer sides of a main body cover or a battery cover of a portable wireless communication device. i) constructing the antenna circuit by hot-stamping or printing with a conductive material on a separate plate; ii) attaching a separate flat plate having the antenna circuit manufactured in step i) to the inside, middle and outside of the body cover or the battery cover of the portable radio communication device; And iii) connecting the mounted antenna circuit to a transceiver of a main body of a portable wireless communication device; Method for manufacturing a radio frequency antenna, characterized in that it comprises a. 9. The method of claim 8, wherein the step i) the separate flat plate is any one of a polycarbonate injection molding and a laminated coating film. The method of claim 8, wherein when the laminated coating film of the separate plate is used in step i), the antenna circuit is formed of a conductive material on one side of the inner side of the two laminated coating films, and then coated by thermal compression. Method for producing a radio frequency antenna, characterized in that the manufacturing. The method of claim 8, wherein the mounting method of the antenna circuit in step ii) is any one of ultrasonic welding, adhesive bonding, tapping, in-moldig injection, pressing and insertion. The manufacturing method of the radio frequency antenna characterized by the above-mentioned. The method of manufacturing a radio frequency antenna according to claim 1 or 11, further comprising attaching a thin film treated with the electromagnetic shielding material to the surface of the antenna circuit to shield electromagnetic waves. The method of manufacturing a radio frequency antenna according to claim 12, wherein the electromagnetic shielding material is at least one of paint, ink, adhesive, paste, metal foil, and EMI paint. The method of claim 12, wherein the thin film is any one or more of a film, a tape, and a flat plate. A radio frequency antenna embedded inside, middle and outside of a body cover or a battery cover of a portable radio communication device manufactured by the method according to any one of claims 1 to 11, 13 and 14.

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