WO2016076660A1

WO2016076660A1 - Method for manufacturing antenna for mobile communication terminal having metal edge, antenna for mobile communication terminal manufactured thereby, and mobile communication terminal having same

Info

Publication number: WO2016076660A1
Application number: PCT/KR2015/012222
Authority: WO
Inventors: 김우중
Original assignee: 김우중
Priority date: 2014-11-14
Filing date: 2015-11-13
Publication date: 2016-05-19
Also published as: KR101624192B1; KR20160057854A

Abstract

A method for manufacturing an antenna for a mobile communication terminal having a metal edge, which is related to the present invention, comprises the steps of: molding a conductive metal edge for configuring the peripheral portion of a mobile communication terminal, the metal edge comprising an extension protrusion which extends in the inward direction; integrating a dielectric case with the metal edge such that the extension protrusion penetrates the dielectric case in the thickness direction with one side end of the extension protrusion directed towards a substrate, which is to be arranged inside the mobile communication terminal, and with the other side end of the extension protrusion arranged to face away from the substrate; and forming an antenna pattern portion on the surface of the dielectric case such that the antenna pattern portion is connected to the other side end of the extension protrusion.

Description

Method of manufacturing an antenna for a mobile communication terminal having a metal frame, an antenna for a mobile communication terminal manufactured by the same and a mobile communication terminal having the same

The present invention relates to a method of manufacturing an antenna for a mobile communication terminal having a metal frame, an antenna for a mobile communication terminal manufactured thereby, and a mobile communication terminal having the same.

A mobile communication terminal is a portable device that is portable and has a function of storing input and output of information and storing data centering on a function of transmitting and receiving a call or a message. With the rapid development of information and communication technology and the electronics industry, mobile communication terminals are becoming one of the essential personal belongings of modern people with various functions such as cameras, music or video playback, games, and TV.

The antenna mounted on the mobile communication terminal has been developed with an external antenna that is exposed to the outside of the terminal first, but has been replaced by an internal antenna with less damage problems while improving aesthetics. Even in the built-in antenna, various forms have been developed according to the type, manufacturing method, material, and position of the antenna. With the miniaturization of terminals, the antennas embedded in them must meet the complex conditions such as securing the length or space to realize communication quality from the design point of view, overcoming the influence from other parts that are getting closer and denser, and controlling electromagnetic waves. Difficulty also increases in that.

In the form of a dielectric carrier or support for fixing the built-in antenna separately in the case of the terminal of the terminal, recently formed directly on the case or frame of the mobile communication terminal to reduce the antenna installation space or volume and increase the component density. The method of forming an antenna pattern is also used in direct printing or deposition to reduce the thickness and to simplify the manufacturing process, in addition to the conventional method of pressing a metal plate. In order to secure a certain distance from the circuit board, the antenna pattern may be located on the opposite side of the case or frame. In order to connect the antenna pattern to the circuit board, a conductor passing through a mechanism supporting the antenna pattern is required. In order for the conductor to be installed through the case, it may be solved by inserting a separate metal into the case, inserting metal pins, or performing printing or plating for conduction to the inner wall of the through hole.

According to the slimming of mobile communication terminals and the increase in the size of the display, a design of enclosing a frame using a metallic ring has been proposed to provide mechanical rigidity or emphasize individuality. However, the metal rim also acts as a weakness that places more restrictions on the installation area or design of the antenna, which is getting narrower.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and is a method of actively using a metal frame in a mobile communication terminal using a metal frame or a decorative metal, and the like, wherein a metal border is a part of the antenna or an element connecting the antenna and the substrate. An object of the present invention is to provide a method for manufacturing an antenna for a mobile communication terminal having a metal frame, which can be utilized as an antenna for a mobile communication terminal, and a mobile communication terminal having the same.

In order to solve the above problems, a method of manufacturing an antenna for a mobile communication terminal having a metal frame according to the present invention, the step of forming a conductive metal border for forming the edge portion of the mobile communication terminal, the metal frame Including an extension protrusion extending in an inward direction; Integrating the dielectric case in the metal border, the extension projection penetrates the dielectric case in the thickness direction so that one end of the extension projection toward the substrate to be disposed in the mobile communication terminal, the extension projection Disposing the other end of the substrate so that it faces away from the substrate; And forming an antenna pattern portion on a surface of the dielectric case, wherein the antenna pattern portion is connected to the other end of the extension protrusion.

As an example related to the present invention, the forming of a conductive metal border for forming an edge portion of the mobile communication terminal may include: casting a conductive metal material to obtain a primary shape; And mechanically processing the primary shape to obtain a secondary shape.

As an example related to the present invention, the method of manufacturing an antenna for a mobile communication terminal having the metal frame may further include performing corrosion resistance on the secondary shape.

As an example related to the present invention, the conductive metal material may be aluminum, and the corrosion treatment may be anodized.

As an example related to the present invention, the step of integrating the dielectric case on the metal edge may include forming a resin material for forming the dielectric case by inserting the metal edge and the insert.

As an example related to the present invention, the method of manufacturing an antenna for a mobile communication terminal having the metal frame may further include performing machining on the metal frame and the dielectric case after the insert injection.

As an example related to the present invention, the step of machining the metal rim and the dielectric case after the insert injection may further include forming the lower end of the extension protrusion to be lower than the surface of the dielectric case. It may include.

As an example related to the present disclosure, the forming of the antenna pattern portion on the surface of the dielectric case may include directly printing a conductive ink on the dielectric case in a predetermined pattern.

As an example related to the present invention, a method of manufacturing an antenna for a mobile communication terminal having the metal frame, after the step of integrating the dielectric case to the metal frame, removing the portion connecting the extension protrusion and the metal frame It may further include.

The present invention also provides a conductive metal frame including an edge body for constituting an edge portion of the mobile communication terminal and an extension protrusion extending inwardly from the edge body; The extension edge penetrates in the thickness direction so that one end of the extension protrusion faces toward the substrate to be disposed inside the mobile communication terminal and the other end of the extension protrusion faces toward the farther side than the substrate. A dielectric case formed in an integrally coupled form; And an antenna connected to the other end of the extension protrusion, the antenna having a metal frame including an antenna pattern part formed on a surface of the dielectric case.

As an example related to the present invention, the plurality of extension protrusions may be arranged in close proximity, and the antenna pattern part may be configured to be connected to the plurality of extension protrusions.

As an example related to the present invention, a plurality of extension protrusions may be arranged in close proximity to form a group, and the plurality of groups may be formed on the dielectric case.

In another aspect, the present invention, the conductive metal frame including a border body for constituting the edge portion of the mobile communication terminal and an extension protrusion extending inwardly from the border body; A substrate disposed inside the metal border; A dielectric formed integrally with the metal edge so that the extension protrusion penetrates in the thickness direction so that one end portion of the extension protrusion is toward the substrate and the other end portion of the extension protrusion is toward the farther side than the substrate. case; An antenna pattern portion connected to the other end of the extension protrusion and formed on a surface of the dielectric case; And a metal frame formed on the substrate and including an elastic terminal contacting one end of the extension protrusion to electrically connect the extension protrusion to the substrate.

According to the present invention, there is provided a method of manufacturing an antenna for a mobile communication terminal having a metal frame, a mobile communication terminal antenna manufactured by the same, and a mobile communication terminal having the same, which together with the substrate are formed with extension protrusions when the metal frame is manufactured. Since it is used as a contact means by contact, manufacturing is simpler than forming a separate metal pin or through hole in the dielectric case, and it is possible to secure reliability of electrical connection with the antenna pattern against impact.

According to an example related to the present invention, the extension protrusions extending from the metal rim may be used in the state of being connected with the metal rim after being integrally formed with the dielectric case or may be used independently by removing the connection element, thereby increasing the utilization in antenna design. Can be.

In addition, the extension protrusions integrally formed in the case together with the metal frame can be combined with the method of forming the antenna pattern by direct printing, thereby simplifying the antenna manufacturing process and using the metal frame as the radiator in a simple manner.

1 is a partial cross-sectional view schematically showing an example of a mobile communication terminal having an antenna manufactured in a method related to the present invention.

Figure 2 is a schematic view showing the appearance of the results of the detailed process to explain the manufacturing method of the antenna for a mobile communication terminal having a metal frame associated with the present invention

3 is a schematic cross-sectional view of a mobile communication terminal having an antenna manufactured by another example method related to the present invention;

4 is a cross-sectional view schematically showing a mobile communication terminal having an antenna manufactured by another example method related to the present invention;

Figure 5 is a cross-sectional view showing another coupling state of the metal frame and the extension protrusions in connection with the present invention

6 is a plan view of the coupled state of FIG.

FIG. 7 is a plan view showing a state in which a conductor printed layer is formed at a connection portion between an antenna pattern part and an extension protrusion in the state of FIG. 6;

FIG. 8 is a plan view illustrating one example in which an antenna pattern part is formed in a shape customized to a dielectric case by using the method of FIGS. 5 to 7.

Hereinafter, a method of manufacturing an antenna for a mobile communication terminal having a metal frame according to the present invention and a mobile communication terminal antenna manufactured by the same will be described in detail with reference to the accompanying drawings.

According to FIG. 1, the mobile communication terminal 100 includes a main body, and is surrounded by a conductive metal frame 110 at an edge of the main body. The inside or outside of the main body includes a dielectric case 130 molded integrally with the metal frame 110.

The mobile communication terminal 100 is a mobile device having an antenna for mobile communication in accordance with the present invention, and typically includes a mobile phone, a smart phone, and the like. In addition, various mobile devices such as a tablet PC, a laptop or a palmtop computer may be included. Can be.

The metal frame 110 forms the appearance of the mobile communication terminal 100 and may also be utilized as an antenna by its conductivity. In addition, an antenna pattern 140 is formed in the dielectric case 130, and the antenna pattern 140 is also electrically connected to the extension protrusion 120 extending from the metal frame 110. In detail, the extension protrusion 120 extends in the inward direction of the metal frame 110 and includes a connection arm 121 extending from the metal frame 110 and a dielectric case 130 at an end of the connection arm 121. ) Is provided with a through pin portion 122 penetrating. One end of the through pin portion 122 faces toward the circuit board 150, and the other end of the through pin portion 122 faces away from the circuit board 150. The through pin 122 contacts the elastic terminal 160 provided on the circuit board 150 to feed an electrical signal to be received or transmitted from the antenna pattern 140 or the metal frame 110.

The antenna pattern 140 may be formed by a method of printing directly on the dielectric case 130. A DPA (Direct Printed Antenna) method or a pad printing method may be applied to the antenna pattern 140 here. In addition, a pattern may be formed by a method such as vapor deposition, plating or transfer. In any case, the formed antenna pattern 140 is connected to the circuit board 150 through the extension protrusion 120 extending from the metal rim 110. Therefore, the metal frame 110 and the dielectric case 130 may be solved by the integrated structure without having a push pin or a through hole structure for connecting a separate antenna.

Figure 2 is a schematic view showing the appearance of the results of the detailed process to explain the manufacturing method of the antenna for a mobile communication terminal having a metal frame associated with the present invention.

First, as shown in FIG. 2 (a), the conductive metal material is cast to form the metal frame 110 to obtain a primary shape. The primary shape includes an edge body 110a and an extension protrusion 120a extending inwardly of the edge body 110a. As the conductive metal material, aluminum having excellent workability and electrical conductivity may be used, and a primary shape may be formed by a die casting method. In addition, magnesium may be used as the conductive metal material. Extension protrusion 120 may have a number of positions or numbers depending on the site it is needed.

Next, as shown in Fig. 2 (b), the primary shape is mechanically processed through equipment such as a CNC to obtain a secondary shape. This forms the correct shape (110b, 120b) that the edge body (110a) and the extension protrusion (120a) to be provided.

When the shape of the frame main body 110b and the processing of the extension protrusions 120b are completed, as shown in FIG. 2 (c), the corrosion

resistant treatments

110c and 120c may be performed on the secondary shapes so as to reduce the degradation of the electrical conductivity. have. In the case of using an aluminum material, anodizing treatment can be performed. In addition, it is possible to apply chromium. In addition, after forming the antenna pattern 140 to reduce the electrical conductivity caused by galvanic corrosion of the extension protrusions 120 made of aluminum, it is also possible to secure physical conduction by pressing a thin pin or needle. In this case, this corrosion treatment step may be omitted or replaced by another step.

When the shape of the metal border and the extension protrusions is completed, the metal border 110c and the extension protrusion 120c are integrated with the dielectric case 130a as shown in FIG. As such a method, a process of molding the metal border 110c and the extension protrusion 120c by injection molding with a resin material for forming the dielectric case 130a may be included. In this case, the extension protrusion 120 is formed to penetrate through the dielectric case 130a, and one end thereof faces toward the circuit board to be mounted in the future, and the other end faces toward the farther side than the circuit board.

Next, the metal frame and the dielectric case may be machined after insert injection (FIG. 2 (e)). In this step, the metal border 110e may be separated into several pieces by the cutting gap 112. In addition, the extension protrusion 120e may be separated from the metal border 110e through processing. To this end, a portion connecting the extension protrusion 120e and the metal border 110e may be removed. The extension protrusion 120e may be used independently of the metal rim 110e.

When the molding of the case having the metal border is completed, the antenna pattern 140 is formed on the surface of the case 130b. The antenna pattern 140 may have a predetermined length or pattern according to a required band or application and may be disposed at different positions. As described above, the conductive pattern may be printed on the dielectric case 130b in a predetermined pattern to form the antenna pattern 140. Only by printing or the like is already connected to the extension protrusions (120d, 120e) in the lower portion, thereby being in a state that can be electrically connected to the circuit board to be arranged on the opposite side.

In this manner, the antenna for a mobile communication terminal having a metal border is formed with a contact pin (ie, an extension protrusion) to which an antenna pattern or a metal border is to be fed in the process of integrating the metal border and the dielectric case. It can reduce the overall manufacturing process and is excellent in cost and control.

3 is a schematic cross-sectional view of a mobile communication terminal 200 having an antenna manufactured by another example method related to the present invention. In this example, the state in which the metal frame 210 and the through pin portion 222 are connected, the portion C connecting the metal frame 210 and the through pin portion 222 is removed. Therefore, the through pin part 222 is connected to the circuit board 250 independently of the metal border 210. In some cases, the through pin part 222 may have a length protruding from the inner surface of the case 230 in consideration of the distance between the circuit board 250 and the conductive elastic terminal 260.

4 is a schematic cross-sectional view of a mobile communication terminal 300 having an antenna fabricated by another example method related to the present invention. In this example, the metal border 310 and the portion C connecting the metal frame 310 and the through pin portion 322 are removed together. That is, in consideration of the position or distance from the circuit board 350, the exposed portion of the through pin portion 322 to the elastic terminal 360 may be formed in various ways.

FIG. 5 is a cross-sectional view illustrating another coupling state of the metal frame and the extension protrusion in accordance with the present invention, FIG. 6 is a plan view of the coupling state of FIG. 5, and FIG. 7 is a connection portion of the antenna pattern part and the extension protrusion in the state of FIG. 6. It is a top view which showed the state which formed the conductor printing layer from the above.

In this example, instead of the plurality of through pins 422, the connecting arm part 421 connecting between the metal rim 410 and the through pins 422 has a common shape. The plurality of through pins 422 increase the stability of the electrical connection with the antenna pattern. That is, the antenna pattern may be connected to the ends of the plurality of through pins 422 by printing, etc., even though one through pin part 422 is caused to be cracked with the antenna pattern 440 by an impact, the other through pin part is generated. The connection state of 422 can compensate for this.

FIG. 8 is a plan view illustrating one example in which an antenna pattern part is formed in a shape customized to a dielectric case using the method of FIGS. 5 to 7.

As illustrated in FIG. 8, a plurality of

extension protrusions

422a and 422b may be arranged in close proximity to form a group, and a plurality of such groups may be formed on the dielectric case 430. In some cases, the

extension protrusions

422a and 422b may be connected to the metal rim 410 or may be partially removed. The

antenna patterns

440A, 440B, 440C, and 440D may be formed to correspond to the required group of extension protrusions, and may be selectively used as provided by a plurality of extension protrusions among the extension protrusions in the group.

The method of manufacturing the antenna for a mobile communication terminal having a metal frame as described above, the antenna for a mobile communication terminal and the mobile communication terminal having the same are not limited to the configuration and method of the embodiments described above. The above embodiments may be configured by selectively combining all or some of the embodiments so that various modifications may be made.

Claims

Forming a conductive metal border for forming an edge portion of the mobile communication terminal, the metal border including an extension protrusion extending in an inward direction;

Integrating the dielectric case in the metal border, the extension projection penetrates the dielectric case in the thickness direction so that one end of the extension projection toward the substrate to be disposed in the mobile communication terminal, the extension projection Disposing the other end of the substrate so that it faces away from the substrate; And

Forming an antenna pattern portion on a surface of the dielectric case, wherein the antenna pattern portion is connected to the other end of the extension protrusion; and manufacturing an antenna for a mobile communication terminal having a metal frame.
The method of claim 1,

Forming a conductive metal border for forming the edge portion of the mobile communication terminal,

Casting a conductive metal material to obtain a primary shape; And

And mechanically processing the primary shape to obtain a secondary shape.
The method of claim 2,

A method of manufacturing an antenna for a mobile communication terminal having a metal frame further comprising the step of performing a corrosion-resistant treatment for the secondary shape.
The method of claim 3,

And the conductive metal material is aluminum, and the corrosion resistance treatment is anodized.
The method of claim 1,

Integrating the dielectric case on the metal border,

And molding the resin material for forming the dielectric case by the metal rim and insert injection.
The method of claim 5,

And performing machining of the metal frame and the dielectric case after the insert injection.
The method of claim 6,

Machining the metal frame and the dielectric case after the insert injection,

And processing the other end of the extension protrusion to form a lower surface than the surface of the dielectric case.
The method of claim 1,

Forming the antenna pattern portion on the surface of the dielectric case,

And directly printing a conductive ink on the dielectric case in a predetermined pattern.
The method of claim 1,

After the step of integrating the dielectric case on the metal border,

The method of manufacturing an antenna for a mobile communication terminal having a metal frame further comprising the step of removing the portion connecting the extension projections and the metal border.
A conductive metal border comprising an edge body for constituting an edge portion of the mobile communication terminal and an extension protrusion extending inwardly from the edge body;

The extension edge penetrates in the thickness direction so that one end of the extension protrusion faces toward the substrate to be disposed inside the mobile communication terminal and the other end of the extension protrusion faces toward the farther side than the substrate. A dielectric case formed in an integrally coupled form; And

Is connected to the other end of the extension projections, comprising an antenna pattern portion formed on the surface of the dielectric case, a mobile communication terminal antenna having a metal frame.
The method of claim 10,

The plurality of extension projections are arranged in close proximity, the antenna pattern portion is configured to be connected to the plurality of extension projections, the antenna having a metal border.
The method of claim 10,

The plurality of extension protrusions are arranged in close proximity to form a group, while the group is formed in plurality on the dielectric case, the antenna having a metal border.
A conductive metal border comprising an edge body for constituting an edge portion of the mobile communication terminal and an extension protrusion extending inwardly from the edge body;

A substrate disposed inside the metal border;

A dielectric formed integrally with the metal edge so that the extension protrusion penetrates in the thickness direction so that one end portion of the extension protrusion is toward the substrate and the other end portion of the extension protrusion is toward the farther side than the substrate. case;

An antenna pattern portion connected to the other end of the extension protrusion and formed on a surface of the dielectric case; And

And a resilient terminal formed on the substrate and contacting one end of the extension protrusion to electrically connect the extension protrusion to the substrate.