WO2010098540A2

WO2010098540A2 - Portable terminal case with a built-in internal antenna, and method for manufacturing same

Info

Publication number: WO2010098540A2
Application number: PCT/KR2010/000385
Authority: WO
Inventors: 김묘근; 조재범
Original assignee: 주식회사 에이티앤씨
Priority date: 2009-02-25
Filing date: 2010-01-21
Publication date: 2010-09-02
Also published as: WO2010098540A3; KR100910161B1

Abstract

The present invention relates to a portable terminal case with a built-in internal antenna, and to a method for manufacturing same. The portable terminal case (1) with a built-in internal antenna comprises: an internal antenna (30) having a carrier (20) and an antenna pattern (10) molded onto the carrier (20); and a portable terminal case (40) which is integrally bonded to the internal antenna (30) when the carrier (20) is integrally molded with the portable terminal case (40). The method for manufacturing the portable terminal case with a built-in internal antenna according to the present invention comprises the steps of: forming a radiation pattern (11) and a feeding unit (12) into a single unitary body; inserting the antenna pattern (10) into a first mold; injection-molding a first resin to form the internal antenna (30); inserting the internal antenna (30) into a second mold; injection-molding a second resin to form the portable terminal case (40) in which the internal antenna (30) with a molded radiation pattern is molded on an inner surface (40a) of the portable terminal case (40). The present invention advantageously better utilizes the space of the case.

Description

Built-in antenna integrated portable terminal case and manufacturing method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and in particular, an internal antenna in which a radiation pattern is molded in a carrier is integrally bonded to the case of the mobile terminal by a single insert injection process, thereby increasing the overall height of the product. The present invention relates to a built-in antenna integrated portable terminal case and a method for manufacturing the same, which are suitable for reducing the size and increasing the space utilization of the case.

In recent years, portable terminals using various bands separately or in common and having various functions and designs are rapidly spreading. In addition, such a portable terminal is increasingly miniaturized and light and short, and at the same time, the diversity of its functions has been highlighted. Therefore, much attention has been paid to reducing the volume of the terminal while maintaining the function of the antenna.

In particular, in the case of the antenna device, the rod antenna and the helical antenna, which are installed to protrude to the outside of the portable terminal by a predetermined length, have excellent characteristics due to omnidirectional radiation, while being the most vulnerable parts that can be damaged when the portable terminal falls. It causes a problem of lowering portability. Therefore, in recent years, many plate type built-in antenna modules mounted in the portable terminal have been used.

Such built-in antennas include a "built-in antenna manufacturing method" disclosed in the registration number 10-0818517 and a "built-in antenna and a built-in antenna manufacturing method" disclosed in the registration number 10-0849805.

However, in the case of the conventional techniques as described above, as a method of forming a radiation pattern, a method of printing a radiation pattern on a ceramic carrier, or depositing, plating, laser direct structuring (LDS), or a molded interconnect device (MID) is adopted. There was a problem that takes a lot of process time.

In addition, in the prior art, the feeding part is completed in the state in which the feeding part is provided in advance in the case, and thus is completed by bonding the radiation pattern and the soldering (sodering). There was a problem that it takes a lot.

The present invention was created to solve the problems of the prior art as described above, and an object of the built-in antenna integrated portable terminal case and a method of manufacturing the same according to the present invention,

First, by minimizing the mounting space in which the built-in antenna is mounted on the case by directly connecting the built-in antenna to the case of the portable terminal, the space utilization of the case can be increased.

Second, the soldering process is not required between the feeding part and the radiation pattern, but also between the embedded antenna and the main circuit board of the portable terminal, so that manufacturing time and processing time can be drastically reduced, and the radiation pattern is deposited as usual. It does not have to be formed by plating, plating, LDS, MID, etc., which reduces manufacturing man-hours, process time and product cost of the internal antenna.

Third, the radiation pattern is embedded in the carrier to be molded so that the radiation pattern is not exposed to the outside of the carrier so that the carrier (and thus the built-in antenna) can be easily joined to the case by insert injection molding. To prevent problems (e.g. short circuits) that occurred when exposed to

Fourth, by adopting the configuration that the embedded antenna with molded radiation pattern is buried on the inner surface of the case by insert molding, the coupling force between the embedded antenna with molded radiation pattern and the case is strengthened and the height of the whole product ( Alternatively, the present invention provides a built-in antenna-integrated portable terminal case and a method of manufacturing the same, which are suitably suitable for increasing the space utilization of the case.

In accordance with an aspect of the present invention, there is provided a built-in antenna integrated portable terminal case comprising a carrier made of a resin material and an antenna pattern molded on the carrier, 'an embedded antenna with a radiation pattern'; And a portable terminal case which is integrally bonded to a carrier of the embedded antenna in which the radiation pattern is molded, wherein the antenna pattern is formed with a radiation pattern molded to be inserted into the carrier, and the radiation At one end of the pattern is bent upwardly in the direction of the carrier upper surface and then bent outwards to form a feed portion formed to be exposed to the upper surface of the carrier.

In accordance with another aspect of the present invention, there is provided a method of manufacturing a built-in antenna integrated portable terminal case, the method comprising: integrally forming a radiation pattern and a feeding unit; Inserting an antenna pattern in which a feeding part is integrally formed in the radiation pattern to a cavity of a first mold; Forming a 'built-in antenna with a radiation pattern' by curing by injection-injecting a first resin into a cavity of a first mold in a state in which an antenna pattern in which a feeding part is integrally formed in the radiation pattern is inserted; Inserting the 'embedded antenna with a radiation pattern' into a cavity of a second mold; By inserting the second resin into the cavity of the second mold in the state where the 'embedded antenna molded with the radiation pattern' is inserted, the curing is performed after the injection of the second resin into the cavity of the second mold. It characterized in that it comprises a step of forming a built-in antenna integrated portable terminal case bonded to.

The present invention has a built-in antenna-integrated portable terminal case having a configuration as described above and a method of manufacturing the same.

First, the mounting space in which the built-in antenna is mounted on the case can be minimized by directly attaching the built-in antenna to the case of the portable terminal. As a result, the space utilization of the case can be increased.

Second, the soldering process is not required between the feeding part and the radiation pattern, but also between the embedded antenna and the main board of the mobile terminal, which can drastically reduce the manufacturing man-hours and the process time. Also, the radiation pattern can be deposited, plated, LDS, It is not necessary to form the MID, so that the manufacturing man-hour, process time and product cost of the internal antenna can be reduced.

Third, the radiation pattern is molded to be embedded in the carrier so that the radiation pattern is not exposed to the outside of the carrier so that the carrier (and thus the built-in antenna) can be easily bonded to the case by insert injection molding, and the radiation pattern is externally There is an effect that can prevent a problem (for example, a circuit short, etc.) that occurred in the case of exposure.

Fourth, the combination of the 'embedded antenna with the radiation pattern' and the case is greatly enhanced by the configuration in which the 'embedded antenna with the radiation pattern' is embedded on the inner surface of the case by insert molding. The thickness) can be significantly lowered, thereby increasing the space utilization of the case.

1 is a perspective view of a built-in antenna integrated portable terminal case according to an embodiment of the present invention.

2 is a cross-sectional view illustrating main parts of a case of a built-in antenna integrated portable terminal according to an embodiment of the present invention.

3 is a sectional view of principal parts of a built-in antenna integrated portable terminal case according to another embodiment of the present invention.

FIG. 4 is a perspective view of the 'built-in antenna having a radiation pattern molded' in FIG. 1.

5 is a bottom perspective view of FIG. 4.

6 is a perspective view of the antenna pattern in FIG. 4.

7 is a flowchart illustrating a method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

One ; Built-in antenna integrated portable terminal case according to the present invention

10; Antenna pattern 11; Radiation pattern

12; Feeding part 20; carrier

20a; Upper surface 20b of the carrier; The bottom of the carrier

20c; Side of carrier

30; 'Internal Antenna Molded with Radiation Pattern'

40; Mobile terminal case 40a; Inside of mobile phone case

41; Internal antenna

The following will be described in detail with reference to the accompanying drawings, preferred embodiments of the present invention, the built-in antenna integrated portable terminal case and its manufacturing method.

1 is a perspective view of a built-in antenna integrated portable terminal case according to an embodiment of the present invention, Figure 2 is a sectional view of the main part of Figure 1, Figure 3 is a built-in antenna according to another embodiment of the present invention A cross-sectional view of main parts of the integrated portable terminal case is shown. FIG. 4 is a perspective view of the 'built-in antenna with a radiation pattern' shown in FIG. 1, FIG. 5 is a bottom perspective view of FIG. 4, and FIG. 6. 4 is a perspective view of the antenna pattern.

As shown in FIGS. 1 to 6, the integrated antenna integrated portable terminal case 1 according to an embodiment of the present invention includes a carrier 20 made of a resin material and a molding formed on the carrier 20. The portable terminal case 40 which is integrally bonded to the carrier 20 of the 'built-in antenna with a radiation pattern' 30 formed of the antenna pattern 10 and the 'built-in antenna with the radiation pattern' 30 formed therein. It characterized in that it is configured to include.

The mobile terminal case 40 means any one of a rear case or a front case, which is used in the same meaning throughout the specification.

According to the above configuration, since the 'built-in antenna with a radiation pattern' 30 (hereinafter referred to simply as the built-in antenna 30) is directly bonded to the portable terminal case 40, the mounting space of the product is reduced to reduce the case. There is an advantage to increase the space utilization of.

In the built-in antenna integrated portable terminal case 1 according to an embodiment of the present invention, the antenna pattern 10 is a radiation pattern 11 formed to be inserted into the carrier 20 and the radiation pattern ( 11 is bent upward (preferably vertical bending) in the direction of the upper surface 20a of the carrier 20 at one end, and then bent outward again (preferably vertical bending) to form the upper surface 20a of the carrier 20. It is characterized by consisting of a feeding unit 12 formed to be exposed to.

That is, the built-in antenna 30 according to the present invention is characterized in that the radiation pattern 11 is fully inserted into the molding and molded, and only the feeding part 12 is in close contact with the upper surface 20a of the carrier 20.

In the built-in antenna integrated portable terminal case 1 according to an embodiment of the present invention, the 'built-in antenna with a radiation pattern molded' 30 has a feeding unit 12 integrally with the radiation pattern 11. The antenna pattern 10 is formed by inserting and curing the first resin into the cavity of the first mold in a state where the formed antenna pattern 10 is inserted into the cavity of the first mold (not shown).

According to the configuration as described above there is an advantage that can be molded by embedding the antenna pattern 10 in the carrier 20.

In the integrated antenna-integrated portable terminal case 1 according to an embodiment of the present invention, the antenna built-in portion 41 is formed in the inner surface (40a) of the case 40, the upper surface ( 20a) and the 'built-in antenna having a radiation pattern molded' 30 are buried in the antenna built-in part 41 while being exposed to the feeding part 12 (ie, the bottom surface 20b of the carrier 20). And the side surface 20c are integrally bonded to the antenna embedded part 41), and the portable terminal case 40 and the 'built-in antenna with a radiation pattern' 30 are integrally molded and bonded.

According to the configuration as described above, the 'built-in antenna with a radiation pattern' 30 is buried on the inner surface of the case 40 by insert molding, so that the bonding force is very strengthened, and the height (or thickness) of the whole product is lowered so that the case ( There is an advantage to increase the space utilization of 40).

Here, referring to a specific embodiment in which the 'embedded antenna molded with a radiation pattern' 30 is buried in the antenna built-in part 41, first, as shown in FIG. 30 is partially embedded in the antenna built-in part 41 (for example, about 1/2 of the overall height of the built-in antenna 30), or as shown in FIG. 30 may be configured to be completely buried in the antenna built-in 41 (that is, when the entire 'embedded embedded antenna with a radiation pattern' 30 is buried), which in any case is within the technical scope of the present invention.

And, as shown in FIG. 3, when the entirety of the 'built-in antenna having a radiation pattern molded' 30 is buried in the antenna built-in portion 41, the portable terminal case 40 and the 'radiation pattern is molded There is an advantage that the overall thickness of the built-in antenna '30 can be made even thinner.

In addition, when the thickness of the portable terminal case 40 is relatively thin, as illustrated in FIG. 2, the 'built-in antenna having a radiation pattern molded' 30 is partially embedded in the antenna built-in part 41. Could be implemented integrally.

In the built-in antenna integrated portable terminal case 1 according to an embodiment of the present invention, the recess formed of the antenna built-in portion 41, the 'built-in antenna with a radiation pattern molded' 30 and the antenna built-in portion Bonding with 41 is performed by inserting the 'built-in antenna with a radiation pattern' 30 into the cavity of the second mold and then injecting and curing the second resin into the cavity of the second mold, thereby embedding the antenna. At the same time as forming the portion 41, the 'internal antenna molded with a radiation pattern' 30 is characterized in that the molding integrally formed in the antenna embedded portion 41.

According to the configuration as described above there is an advantage that can be bonded to the case 40 and the built-in antenna 30 in a single process, not by soldering.

The radiation pattern 11 is a conductive pattern acts as a radiator by the current supplied from the main board of the mobile terminal by capacitive coupling, as well as the shape of the radiation pattern 11 is not limited to this embodiment It may be implemented in various forms to exhibit the radiation characteristics of the antenna.

The feed part 12 interconnects the radiation pattern 11 and a circuit pattern (not shown) formed on a main board (not shown) of the portable terminal.

The following describes a method for manufacturing a built-in antenna integrated portable terminal case of the present invention having the configuration as described above.

7 is a flowchart of a method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention.

As shown in FIG. 7, in the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the radiation pattern 11 and the feeding part 12 are integrally formed by, for example, pressing. (S110) and the antenna pattern 10 in which the feeding part 12 is integrally formed in the radiation pattern 11 is inserted into a cavity of a first mold (not shown) having a core having a predetermined shape. Injecting the first resin into the cavity of the first mold in the step S112 and the antenna pattern 10 in which the feeding part 12 is integrally formed in the radiation pattern 11 is inserted into the cavity. Curing the radiation pattern 11 to form the inside of the carrier 20 and the feeding part 12 to form a 'built-in antenna having a radiation pattern molded' 30 exposed on the upper surface 20a of the carrier 20. (S114) and the 'built-in antenna in which the radiation pattern is molded' 30 has a core having a predetermined shape (core) Inserting into the cavity of the mold (not shown) (S116), and the injection molding the second resin into the cavity of the second mold in the state that the 'built-in antenna with the radiation pattern molded' 30 is inserted and then hardened Thereby, forming the integrated antenna integrated portable terminal case 40 in which the 'built-in antenna with a radiation pattern molded' 30 is integrally bonded to the inner surface 40a of the portable terminal case 40 (S118). It is characterized in that the configuration.

In the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the 'internal antenna molded with a radiation pattern' 30 is integrally bonded to the inner surface 40a of the portable terminal case 40. In the forming of the integrated antenna integrated portable terminal case 40 (S118), after inserting the 'built-in antenna with a radiation pattern' 30 into the cavity of the second mold, the second mold is inserted into the cavity of the second mold. The resin is injected and cured to form the antenna internal part 41 recessed in the inner surface 40a of the case 40, and the upper surface 20a and the feeding part 12 of the carrier 20 are exposed. In this state, the 'embedded antenna with a radiation pattern molded' 30 is buried in the antenna embedded part 41 so that the 'embedded antenna with a radiation pattern molded' 30 is integrally bonded to the antenna embedded part 41. Formation (i.e., the lower surface 20b and the side surface 20c of the carrier 20 is Characterized in that the internal portion 41 and integrally joined by molding).

According to the configuration as described above can be bonded by embedding the 'internal antenna molded with a radiation pattern' (30) on the inner surface of the case 40, as a result of strengthening the tightening force and lowering the height of the product to improve the space utilization of the case There is an advantage that can be increased.

In addition, according to the configuration as described above, the soldering process is not required between the feeding unit 12 and the radiation pattern 11 as well as between the built-in antenna 30 and the main board, it is possible to drastically reduce the manufacturing labor and process time, In addition, since the radiation pattern 11 does not have to be formed by deposition, plating, LDS, MID, etc. as in the related art, there is an advantage in that the manufacturing man-hour, process time, and product cost of the embedded antenna 30 can be reduced.

The 'embedded antenna molded with a radiation pattern' 30 is buried in the antenna embedded part 41 so that the 'embedded antenna molded with a radiation pattern' 30 is integrally formed on the antenna embedded part 41. The process may be performed as described above so that the 'built-in antenna with a radiation pattern' 30 is partially buried in the antenna built-in 41 (eg about half of the height of the built-in antenna 30). In this case, the embedded antenna having a radiation pattern molded therein 30 may be completely buried in the antenna built-in 41. In any case, of course, the present invention belongs to the technical scope of the present invention.

After that, the main board of the mobile terminal is connected to the circuit pattern (not shown) formed on the main board (not shown) of the portable terminal (more particularly, the feed point formed on the circuit pattern) and the feeding unit 12 to contact the case 40. )).

In the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the step (S114) of forming the 'built-in antenna with a radiation pattern molded' (30), the radiation pattern 11 is a carrier ( 20 and molded so as to be inserted into the inside of the carrier 20, and the feeding part 12 is exposed to the upper surface 20a of the carrier 20 (more specifically, as shown in FIGS. 2 and 3 And formed to be in close contact with the upper surface 20a of the 20.

According to the above configuration, since the radiation pattern 11 is not exposed to the outside of the carrier 20 at all, it is easy to join the carrier 20 (and thus the built-in antenna 30) to the case 40 by insert injection molding. In addition, there is an advantage that can block the problem (for example, circuit short, etc.) that occurred when the radiation pattern 11 is exposed to the outside.

In the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the step (S112) of integrally forming the radiation pattern 11 and the feeding unit 12, the feeding unit 12 is At one end of the radiation pattern 11 is bent upward (preferably vertical bending) in the direction of the upper surface 20a of the carrier 20, and then bent back outward (the opposite direction from the direction from one end to the other end) It is characterized in that it is carried out by the vertical bending).

According to the configuration as described above there is an advantage that can minimize the seating space by minimizing the height of the product.

In the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the first resin is a PC (polycarbonate) resin, ABS (Acrylonitrile-Butadiene-Styrene) resin or 'synthetic resin of PC and ABS' It is characterized in that any one selected.

Therefore, the material of the carrier 20 is implemented to be any one selected from PC resin, ABS resin or 'synthetic resin of PC and ABS'.

In the method of manufacturing a built-in antenna integrated portable terminal case according to an embodiment of the present invention, the second resin is a PC resin.

Therefore, the portable terminal case 40 is implemented with a PC resin.

According to the above configuration, there is an advantage in that the bonding is easier and the radiation characteristics of the antenna can be improved.

The above embodiments of the present invention are merely one embodiment of the technical idea of the present invention, and of course, other modifications can be made within the technical idea of the present invention by those skilled in the art.

Claims

A 'built-in antenna with a radiation pattern' consisting of a carrier 20 made of resin and an antenna pattern 10 formed on the carrier 20; And

It comprises a mobile terminal case 40 which is integrally bonded to the carrier 20 of the 'radiation pattern molded internal antenna' 30,

The antenna pattern 10 may be bent upwardly in the direction of the upper surface 20a of the carrier 20 at one end of the radiation pattern 11 and the radiation pattern 11 molded to be inserted into the carrier 20. After being formed to be bent outwards again to be exposed to the upper surface (20a) of the carrier 20,

An antenna embedded portion 41 is formed in the inner surface 40a of the case 40,

As the upper surface 20a of the carrier 20 and the feeding unit 12 are exposed, the 'built-in antenna with a radiation pattern' 30 is buried in the antenna built-in unit 41 and molded and bonded to the portable terminal. Characterized in that the case 40 and the 'built-in antenna with a radiation pattern molded' 30 is integrally bonded,

The 'built-in antenna with a radiation pattern molded' (30),

The first resin is injected into the cavity of the first mold while the antenna pattern 10 in which the feeding part 12 is integrally formed in the radiation pattern 11 is inserted into the cavity of the first mold, and then hardened. Characterized in that formed by,

Formation of the recess of the antenna built-in part 41 and the bonding between the 'built-in antenna with a radiation pattern' 30 and the antenna built-in part 41,

The antenna embedded part 41 is formed by inserting the 'embedded antenna with a radiation pattern' 30 into the cavity of the second mold and then injecting and curing a second resin into the cavity of the second mold. Simultaneously with the 'internal antenna molded with a radiation pattern' (30) is a built-in antenna integrated portable terminal case, characterized in that the molding integrally formed in the antenna built-in (41).
Forming the radiation pattern 11 and the feeding unit 12 integrally (S110);

Inserting an antenna pattern (10) in which a feeding part (12) is integrally formed in the radiation pattern (11) into a cavity of a first mold (S112);

In the state where the antenna pattern 10 in which the feeding part 12 is integrally formed on the radiation pattern 11 is inserted, the first resin is injected into the cavity of the first mold, and then cured. Forming an antenna '30 (S114);

Inserting the 'built-in antenna with a radiation pattern' 30 into a cavity of a second mold (S116);

Injecting the second resin into the cavity of the second mold in a state in which the 'embedded antenna having a radiation pattern molded' 30 is inserted and then curing, thereby 'radiating' the inner surface 40a of the mobile terminal case 40. Patterned molded internal antenna '30 is configured to include a step (S118) to form a built-in antenna integrated portable terminal case 40 integrally bonded,

In the step S112 of forming the radiation pattern 11 and the feeding unit 12 integrally, the feeding unit 12 may be in the direction of the carrier 20 upper surface 20a at one end of the radiation pattern 11. Bent upwards and then bent outward again to form,

Forming the 'internal antenna with a radiation pattern molded' 30 (S114), the radiation pattern 11 is molded so as to be charged into the carrier 20 and the feeding unit 12 of the carrier 20 Is formed by exposing to the upper surface 20a,

Forming a built-in antenna integrated portable terminal case 40 in which the 'built-in antenna with a radiation pattern molded' 30 is integrally bonded to the inner surface 40a of the portable terminal case 40 (S118),

After inserting the 'built-in antenna with a radiation pattern' 30 into the cavity of the second mold, the second resin is injected into the cavity of the second mold to cure it, and then, at the inner surface 40a of the case 40. While forming the recessed antenna internal part 41 and the upper surface 20a and the feeding part 12 of the carrier 20 are exposed, the 'internal antenna molded with a radiation pattern' 30 is the antenna. Method of manufacturing a built-in antenna integrated mobile terminal case characterized in that the buried in the internal portion 41 is carried out by integrally molded molding 'integrated antenna with a radiation pattern' 30 is formed in the antenna built-in portion 41 .
The method according to claim 2,

The first resin is any one selected from PC (polycarbonate) resin, ABS (Acrylonitrile-Butadiene-Styrene) resin or 'synthetic resin of PC and ABS',

The second resin is a manufacturing method of a built-in antenna integrated portable terminal case, characterized in that the PC resin.