KR101265586B1 - Intenna manufacturing apparatus and method for mobile terminals - Google Patents

Abstract

PURPOSE: An embedded antenna manufacturing device for a mobile terminal and a method thereof are provided to use a silver paste, thereby reducing manufacturing time and costs. CONSTITUTION: A lower mold(10) installs a carrier or a mobile terminal case(40). The lower mold is molded by injection to have a predetermined shape. A silver paste is injected through an injection inlet. An upper mold(20) forms a pattern groove. A jig(12) is formed in the lower mold.

Description

Built-in antenna manufacturing apparatus and method for a mobile terminal {Intenna manufacturing apparatus and method for mobile terminals}

The present invention relates to a built-in antenna manufacturing apparatus and method for a mobile terminal, and more particularly, to install the carrier or the case for a mobile terminal in a mold and inject silver paste, which is a conductive paint, by injection or centrifugal casting to form an antenna. An apparatus and method for manufacturing an embedded antenna for a portable terminal can be provided.

With the development of industrial technology, various mobile communication terminals are being developed to provide mobile communication to supply various information to real life.

Recently, in accordance with the trend of preferring not only the function of the mobile communication terminal but also a simple and slim design, it is a trend to be designed to have a built-in antenna rather than having an external antenna protruding to the outside of the terminal.

Such conventional built-in antennas generally include pad-printed built-in antennas for forming a conductive antenna pattern by using a pad printing method on a case of a carrier or a terminal.

However, the conventional pad printing built-in antenna requires a complicated plating process after forming a conductive pattern of a predetermined pattern on the surface of the carrier by a pad printing method in the manufacturing process, and thus requires a lot of manufacturing time and manufacturing cost. There is a problem that increases.

As a conventional technology for solving such a problem, Korean Patent Publication No. 10-1122117 discloses a printed circuit antenna and a method of manufacturing the same. The main technical configuration of the carrier is injection molded in a predetermined form and a surface of the carrier. A silver paste composed of a mixture of 70 to 78 wt% silver (Ag), 8 to 10 wt% binder, and 14 to 21 wt% carbitol acetate is formed by pad printing as a conductive paint, and has a temperature of 60 to 120 ° C. And a conductive antenna pattern of a predetermined type formed by hot air drying under conditions of a drying time of 1 to 10 hours.

The configuration is characterized by using a silver paste as a conductive paint and not to perform a plating process through a hot air drying process, but likewise to form an antenna pattern by a pad printing method, accuracy is lowered, manufacturing time There is a problem that it takes a lot.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to enable the internal antenna using the silver paste by the injection molding using the mold time and the time required for the formation of the internal antenna The present invention provides a built-in antenna manufacturing apparatus and method for a portable terminal that can significantly reduce the cost.

In addition, the present invention is to form a built-in antenna directly on the carrier or the case of the portable terminal using a mold formed with an antenna circuit pattern on the inside, it is possible to accurately form the built-in antenna in a desired position, the portable terminal to prevent the occurrence of defective products Another object is to provide a built-in antenna manufacturing apparatus and method for the same.

In addition, the present invention forms an antenna circuit pattern on the inside of the mold and at the same time to form an antenna groove to receive the silver paste selectively in the portion where the built-in antenna of the case of the mobile terminal to be formed to accurately form the built-in antenna to a variety of thickness Another object of the present invention is to provide a built-in antenna manufacturing apparatus and method for a portable terminal.

According to an aspect of the present invention,

A built-in antenna manufacturing apparatus for a mobile terminal, comprising: a lower mold in which an injection molded carrier or a case for a portable terminal is installed, an injection passage coupled to an upper portion of the lower mold, and injected with silver paste, and the injection passage And an upper mold having a pattern groove formed therein so as to correspond to a circuit pattern of a built-in antenna to be installed and connected to.

At this time, it is characterized in that it further comprises a turntable installed in the lower portion of the lower mold.

In addition, the lower end of the injection passage is formed with a receiving groove, the lower mold is formed with a plurality of jig for installing a carrier or a case for a portable terminal, the upper mold is inserted into a carrier or a case for a portable terminal is installed in the jig The installation groove is formed, the pattern groove is characterized in that formed in the upper portion of the installation groove to communicate with the receiving groove.

In addition, the pattern groove is characterized in that formed in a depth of 0.01 ~ 1.0 mm.

On the other hand, the built-in antenna manufacturing method for a portable terminal according to the present invention,

A method of manufacturing a built-in antenna for a portable terminal, comprising: a first step of injection molding a carrier or a case for a predetermined type; a second step of placing the carrier or the case for a portable terminal in a lower mold; And after combining the upper mold, a third step of forming a built-in antenna in a carrier or a case for a portable terminal by injecting silver paste and a fourth step of demolding and drying the case for a carrier or a portable terminal in which a built-in antenna is formed. It is characterized by.

At this time, the third step is characterized in that to form a built-in antenna by injection molding.

In the third step, the internal antenna is formed by a centrifugal casting method.

In the first step, injection molding may be performed such that an antenna groove for accommodating the silver paste is formed in a portion where the antenna of the carrier or the portable terminal case is to be formed.

According to the present invention, it is possible to form a built-in antenna using a silver paste by injection using a mold having an antenna circuit pattern formed therein, which can greatly reduce the time and cost required to form the built-in antenna, It has an excellent effect of accurately forming the built-in antenna in place.

In addition, according to the present invention, by applying a centrifugal casting method using a turntable can accurately form the built-in antenna to the edge portion, it is possible to significantly reduce the failure rate, and to simultaneously embed the built-in antenna on the surface of a plurality of carrier or case for a mobile terminal By forming it, it has the effect which can improve productivity significantly further.

In addition, according to the present invention by forming an antenna circuit pattern on the inside of the mold and at the same time to form an antenna groove to accommodate the silver paste selectively in the portion where the built-in antenna of the case of the mobile terminal is to be formed built-in type of various thickness depending on the purpose of use It further has the effect of accurately forming an antenna.

1 is a perspective view schematically showing a built-in antenna manufacturing apparatus for a portable terminal according to the present invention.
Figure 2 is a side cross-sectional view schematically showing an embedded antenna manufacturing apparatus for a portable terminal according to the present invention.
Figure 3 is a side cross-sectional view showing another embodiment of a built-in antenna for a portable terminal according to the present invention.
4 is a flowchart illustrating a method of manufacturing a built-in antenna for a portable terminal according to the present invention.
Figure 5 is a plan view showing an embodiment of a case for a portable terminal having a built-in antenna manufactured by the present invention.
6 is a perspective view schematically showing another embodiment of the present invention shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a built-in antenna manufacturing apparatus and method for a portable terminal according to the present invention.

1 is a perspective view schematically showing a built-in antenna manufacturing apparatus for a portable terminal according to the present invention, Figure 2 is a side cross-sectional view schematically showing a built-in antenna manufacturing apparatus for a portable terminal according to the present invention, Figure 3 according to the present invention 4 is a side sectional view showing another embodiment of a built-in antenna for a portable terminal, Figure 4 is a flow chart showing a built-in antenna for a portable terminal according to the present invention, Figure 5 is a portable antenna having a built-in antenna manufactured by the present invention 6 is a plan view illustrating one embodiment of a terminal case, and FIG. 6 is a perspective view schematically showing another embodiment of the present invention shown in FIG. 1.

The present invention relates to an apparatus and method for manufacturing a built-in antenna for a portable terminal, which can form an antenna 50 by injecting silver paste, which is a conductive paint, into a carrier or a case for a portable terminal by injection or centrifugal casting. First, the built-in antenna manufacturing apparatus for a portable terminal according to the present invention is composed of a lower mold 10 and an upper mold 20 as shown in FIG.

In more detail, in the present invention, after placing the carrier 40 for forming the internal antenna 50 or the case 40 for the portable terminal in a mold, a silver paste, which is a conductive paint, is injected into the mold. Or it is characterized in that it is configured to form a built-in antenna 50 on the surface of the mobile terminal case 40, the lower mold 10 is a carrier or portable terminal case 40 injection molded in a predetermined form It is to be able to install.

That is, the lower mold 10 has a jig 12 in which a carrier or a portable terminal case 40 is installed, and the jig 12 is formed in the same shape as the carrier or portable terminal case 40. It may be formed integrally with the mold 10, or may be installed to be detachable on the lower mold 10.

Next, the upper mold 20 is coupled to the upper portion of the lower mold 10 to inject a silver paste for forming the built-in antenna 50 in the carrier 40 or the case 40 for the mobile terminal installed in the lower mold 10. The upper mold 20 has an injection passage 22, a pattern groove 24, and an installation groove 28 formed in the upper mold 20.

In more detail, the injection passage 22 is formed to penetrate the upper mold 20 at the center of the upper mold 20 to inject the silver paste between the upper mold 20 and the lower mold 10. The pattern groove 24 is to be in communication with the injection passage 22 to be formed inside the upper mold 20, that is, the upper portion of the installation groove 28 to be described later, built-in antenna to be created It is formed in the same shape as the circuit pattern of 50 to serve to form the built-in antenna 50 on the carrier 40 or the case 40 for the mobile terminal mounted on the jig 12 of the lower mold 10. It is.

In addition, the installation groove 26 has the same shape as the case 40 for the carrier or the portable terminal, when the upper mold 20 is coupled to the lower mold 10, the carrier or portable coupled to the jig 12. It serves to accommodate the case 40 for the terminal.

That is, after the upper mold 20 is coupled to the lower mold 10 in a state in which the carrier 40 or the case for the portable terminal 40 is mounted on the jig 12 of the lower mold 10, the upper mold 20 When the silver paste is injected at a high pressure through the injection passage 22 formed through the upper end of the upper portion, the silver paste is inserted into the pattern groove 24 so that the case for the carrier or the mobile terminal located inside the installation groove 26 ( The built-in antenna 50 can be formed on the 40.

At this time, the depth of the pattern groove 24 is preferably to be 0.01 ~ 1.0mm, because the thickness of the pattern antenna 24 should be different depending on the purpose of use. That is, the thickness of the built-in antenna 50 applied to the case 40 for the mobile terminal may vary depending on the purpose of use. When forming the pattern groove 24 in the mold as described above, various thicknesses can be easily set. There is an advantage.

In addition, if the depth of the pattern groove 24 is less than 0.01mm, the thickness is too thin, there is a risk that the function as an antenna may not perform properly, if the depth of the pattern groove 24 exceeds 1.0mm the thickness is too thick Since it may be affected by other components of the mobile terminal which is becoming smaller in size, it is preferable to limit the thickness of the pattern groove 24 to 0.01 to 1.0 mm as described above.

Therefore, the pattern groove 24 formed in the upper mold 20 may vary in depth depending on the formation position.

In addition, although not shown, the pattern grooves 24 may be formed in the lower mold 10 as well as the upper mold 20, depending on the position at which the built-in antenna 50 is applied according to the type of the carrier or portable terminal case 40. Of course, it can also be formed.

In addition, the reference numeral 60 in the drawing is a guide rod 60 for guiding the up and down movement of the upper mold 20.

On the other hand, it is also possible to form the built-in antenna 50 by the centrifugal casting method rather than the injection method as described above, the built-in antenna manufacturing apparatus for a portable terminal according to the present invention, as shown in Figure 3, the lower mold 10 It may be configured to further include a turntable (30) installed in the lower portion.

That is, by rotating the lower mold 10 and the upper mold 20 by using the turntable 30, the silver paste injected through the injection passage 22 is better propagated to the outside, so that the case 40 for the carrier or the portable terminal It is to be able to accurately form the built-in antenna 50 to the edge of the).

When the built-in antenna 50 is formed by the centrifugal casting method, the built-in antenna 50 may be simultaneously formed on a plurality of carriers or case 40 for the mobile terminal. A plurality of jig 12 is formed.

In more detail, the receiving groove 22a is formed at the lower end of the injection passage 22 formed in the upper mold 20 to accommodate the silver paste injected into the mold through the injection passage 22. In a portion spaced apart from the receiving groove 22a by a predetermined distance, a plurality of installation grooves 28 into which the case 40 for the carrier or the portable terminal is inserted are installed at the same position as the jig 12 of the lower mold 10. It is formed radially to be able to form the built-in antenna 50 in the case 40 for a plurality of carriers or portable terminals at a time by the centrifugal casting method.

At this time, the pattern groove 24 formed in the upper mold 20 and the runner 26 connected between the injection passage 22 and the pattern groove 24 are located in a plurality of positions at which the installation groove 28 is formed. Of course, dogs are formed.

That is, the carrier 40 or the case 40 for the portable terminal is respectively installed on the plurality of jigs 12 formed in the lower mold 10 coupled to the turntable 30, and the upper mold 10 is disposed on the lower mold 10. When the silver paste is injected through the injection passage 22 after the combination 20, the injected silver paste is received inside the receiving groove 22a formed at the lower end of the injection passage.

In this state, when the turntable 30 is rotated at a high speed, the silver paste accommodated in the accommodation groove 22a moves from the center to the outside along the runner 26 formed in the upper mold 20 to be inserted into the pattern groove 24. The built-in antenna 50 may be formed on the carrier 40 or the case 40 for the portable terminal located inside the installation groove 28 of the upper mold 20.

Next, a method of manufacturing a built-in antenna for a portable terminal according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 4, the method for manufacturing a built-in antenna for a portable terminal according to the present invention is mainly composed of first to fourth steps S10, S20, S30, and S40. First, a first step S10 is performed. The present invention relates to a step of injection molding a case 40 for a carrier or a portable terminal using an injection mold, which is typically used to manufacture the case 40 for a carrier or a portable terminal. It will be omitted.

Next, the second step (S20) relates to the step of placing the case 40 for the carrier or portable terminal manufactured in the first step (S10) to the lower mold 10, one in the lower mold 10 The carrier 40 or the case 40 for the portable terminal is installed on the jig 12 formed above with the surface on which the built-in antenna 50 is to be formed facing upward.

Next, in the third step S30, after the upper mold 20 is coupled to the lower mold 10 on which the carrier or portable terminal case 40 is installed, the injection passage 22 formed in the upper mold 20 is formed. The implantation of the silver paste through the carrier or the portable terminal for forming the built-in antenna 50 on the case 40, as described above by the injection molding method or centrifugal casting method Can be formed.

Next, in the fourth step S40, after demolding the carrier 40 or the case for a portable terminal in which the built-in antenna 50 is formed from the mold through the third step S30, the foreign material is removed and dried to remove the built-in antenna 50. And a step of completing the generation of the above), and when the process up to the fourth step (S40) is completed, as shown in FIG. 5, the built-in antenna 50 formed in a circuit pattern on the case 40 for the carrier or the mobile terminal ) Can be manufactured.

On the other hand, according to another embodiment of the method for manufacturing a built-in antenna for a portable terminal according to the present invention, the carrier or in the first step (S10) of injection molding a predetermined type of carrier or the case for a portable terminal using an injection mold The antenna groove 45 capable of accommodating the silver paste may be simultaneously formed in a portion where the internal antenna 50 of the case 40 for the portable terminal is to be formed.

That is, as the functions of mobile communication terminals are diversified, the number of built-in antennas 50 mounted according to the use purpose such as GPS antenna, repeater antenna, and Bluetooth antenna is increasing. Depending on the required thickness of the silver paste, there is a difference.

Therefore, it is difficult to accurately form the internal antenna 50 having the thickness of the silver paste necessary for accurate signal reception using only the pattern grooves 24 formed in the upper mold 20 or the lower mold 10. As shown in FIG. 6 in the injection molding process of the carrier 40 or the case 40 for the mobile terminal corresponding to S10, an antenna groove 45 in which a silver paste may be accommodated is formed in a portion where the internal antenna 50 is to be formed. In order to accurately form the internal antenna 50 having various thicknesses in the third step S30 of forming the internal antenna 50 on the carrier 40 or the case for the portable terminal.

According to the embedded antenna manufacturing apparatus and method for a mobile terminal according to the present invention as described above, it is possible to form the built-in antenna 50 using a silver paste by injection using a mold formed with the circuit pattern of the antenna 50 on the inside Thus, not only can greatly reduce the time and cost required to form the built-in antenna 50, but also can accurately form the built-in antenna 50 having a variety of thickness at a desired position, centrifugal casting using the turntable 30 By applying the method, the built-in antenna 50 can be accurately formed up to the edge portion, thereby significantly reducing the defect rate, and the built-in antenna 50 can be simultaneously formed on the surfaces of the plurality of carriers or the case 40 for the mobile terminal. It is possible to have a variety of advantages, such as to significantly improve productivity.

Although the above embodiments have been described with respect to the most preferred examples of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications are possible without departing from the technical spirit of the present invention.

The present invention relates to a built-in antenna manufacturing apparatus and method for a mobile terminal, and more particularly, to install the carrier or the case for a mobile terminal in a mold and inject silver paste, which is a conductive paint, by injection or centrifugal casting to form an antenna. An apparatus and method for manufacturing an embedded antenna for a portable terminal can be provided.

10: lower mold 12: jig
20: upper mold 22: injection passage
22a: accommodation groove 24: pattern groove
28: installation groove 30: turntable
40: case for carrier or mobile terminal 45: antenna groove
50: built-in antenna 60: guide rod

Claims (8)

In the built-in antenna manufacturing apparatus for a mobile terminal,
A lower mold in which a case for a carrier or a portable terminal injection molded in a predetermined form is installed;
The upper mold is coupled to an upper portion of the lower mold, and includes an injection passage in which silver paste is injected, and an upper mold in which a pattern groove is formed so as to correspond to a circuit pattern of an internal antenna to be installed and connected to the injection passage.
An accommodation groove is formed at a lower end of the injection passage, a jig for installing a carrier or a case for a mobile terminal is formed in the lower mold, and an installation groove for inserting a case for a carrier or a portable terminal installed in the jig is formed in the upper mold. And the pattern groove is formed in an upper portion of the installation groove so as to communicate with the accommodation groove.
The method of claim 1,
Built-in antenna manufacturing apparatus for a mobile terminal, characterized in that it further comprises a turntable installed in the lower portion of the lower mold.
delete The method of claim 1,
The pattern groove is a built-in antenna manufacturing apparatus for a mobile terminal, characterized in that formed in a depth of 0.01 ~ 1.0 mm.
In the method of manufacturing a built-in antenna for a portable terminal using the built-in antenna manufacturing apparatus for a portable terminal according to any one of claims 1, 2 and 4.
A first step of injection molding a case for a carrier or a portable terminal of a predetermined form;
A second step of placing the case for the carrier or the portable terminal in a lower mold;
Combining the upper mold on the lower mold, and injecting silver paste to form an internal antenna in a case for a carrier or a mobile terminal; and
And a fourth step of demolding and drying the case for the carrier or the portable terminal in which the built-in antenna is formed.
6. The method of claim 5,
In the third step, a built-in antenna for a portable terminal, characterized in that to form a built-in antenna by injection molding.
6. The method of claim 5,
In the third step, a built-in antenna for a portable terminal, characterized in that to form a built-in antenna by a centrifugal casting method.
6. The method of claim 5,
In the first step, the injection molding method for a portable terminal, characterized in that the injection molding so that the antenna groove for receiving the silver paste is formed in the portion where the antenna of the carrier or the portable terminal case is to be formed.

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