KR20100098275A - Antenna embeded mobile communication terminal case - Google Patents

Abstract

PURPOSE: A mobile communication terminal case with a built-in antenna is provided to satisfy the miniaturization and antenna characteristics simultaneously by including the built-in antenna inside the case. CONSTITUTION: A mobile communication terminal case includes an antenna pattern(110), a first injection molding object(120) and a second injection molding object(130). The first injection molding object covers one surface of the antenna pattern, and the second injection molding object covers the other surface of the antenna pattern. The antenna pattern is inserted into the mold, and the first injection molding object is manufactured through the injection of synthetic resin into the mold. The first injection molding object is inserted into the mold, and the second injection molding object is fabricated through the injection of synthetic resin into the mold.

Description

Mobile terminal case with built-in antenna {ANTENNA EMBEDED MOBILE COMMUNICATION TERMINAL CASE}

The present invention relates to a case of a mobile communication terminal with a built-in antenna and a method of manufacturing the same, and more particularly, to a case of a mobile communication terminal with an antenna formed therein and formed in a case of a mobile communication terminal through two injection processes and its manufacture It is about a method.

* Mobile communication terminals such as mobile phones, PDAs, and notebook computers are becoming an indispensable device in modern society. Recently, portable wireless terminals using various bands such as CDMA, PDA, DCS, GSM, etc., or using them in common are rapidly spreading, and terminals with various functions and designs have emerged. In addition, as the terminal is gradually miniaturized and light and short, the variety of functions is more 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 terminal by a predetermined length, have excellent characteristics due to omnidirectional radiation, while being the most vulnerable parts that can be damaged when the terminal falls. This causes a problem of deteriorating portability. Therefore, in recent years, research on the in-molding antenna which forms the antenna integrally with the case of the mobile communication terminal has been continued.

An object of the present invention is to provide a structure and method for embedding an antenna in a case of a mobile communication terminal to solve the above problems.

One side of the present invention, forming a planar antenna pattern, forming a first injection molding covering one surface of the antenna pattern, and forming a second injection molding covering another surface of the antenna pattern It is possible to provide a method for manufacturing a mobile communication terminal case having a built-in antenna.

The antenna pattern may include an interconnection pin extending from one surface of the antenna pattern.

In the forming of the first injection molding, the injection molding may be performed such that the open end of the interconnection is exposed on the opposite surface of the first injection molding in contact with the antenna pattern.

The method of manufacturing a mobile communication terminal case in which the antenna is embedded may further include processing the film type antenna pattern into a structure having a three-dimensional shape before the forming of the first injection molded product.

The forming of the first injection molding may include inserting the antenna pattern into a first mold having a structure of the first injection molding, and injecting a molding material into the first mold to cover one surface of the antenna pattern. 1 may include the step of injection molding.

The forming of the second injection molding may include inserting the first injection molding with the antenna pattern into a second mold having a structure of the second injection molding, and injecting a molding material into the second mold to insert the antenna pattern. And injecting a second injection molding covering another one surface of the second injection molding.

Another aspect of the present invention includes a planar antenna pattern, a first injection molding covering one surface of the antenna pattern, and a second injection molding formed on the first injection molding to cover another surface of the antenna pattern. It is possible to provide a mobile communication terminal case in which the antenna is built.

The antenna pattern may include an interconnection pin extending from one surface of the antenna pattern and having one end exposed on a surface of the first injection molded product.

The first injection molding and the second injection molding may be formed of different materials, and in this case, the first injection molding may include a material for shielding electromagnetic waves.

According to the present invention, the antenna can be embedded in the inside of the mobile communication terminal case, thereby obtaining a mobile communication terminal case capable of simultaneously miniaturizing and satisfying antenna characteristics.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1A to 1C are flowcharts illustrating a method of manufacturing a mobile communication terminal case in which an antenna is installed according to an embodiment of the present invention.

Referring to (a) to (c) of FIG. 1, in the manufacturing process of a mobile communication terminal case with an antenna according to the present embodiment, the method includes forming an antenna pattern (a) and forming a first injection molded product ( b), and (c) forming a second injection product.

The step (a) of forming the antenna pattern may be a step of forming an antenna pattern in a form suitable for a frequency used in a mobile communication terminal. In the present embodiment, the antenna pattern 110 may be a flat antenna pattern.

The antenna pattern 110 may be formed by pressing a metal plate. The material of the antenna pattern may be implemented in various ways. The antenna pattern may be a metal plate having flexibility.

In the present embodiment, the forming of the antenna pattern may include a process of processing the antenna pattern to have a three-dimensional shape. The shape of the mobile communication terminal case in which the antenna pattern is embedded may have a three-dimensional shape. Therefore, if the antenna pattern is processed in advance according to the shape of the mobile communication terminal case, an unnecessary process can be reduced in the subsequent process of forming the mobile communication terminal case by the injection process. In addition, the radiated area of the antenna can be increased by making the most of the shape of the case.

The step (b) of forming the first injection molded product may include forming the first injection molded product 120 to cover one surface of the antenna pattern 110.

In this step, the first injection molded product 120 may be formed by an in-molding process. That is, the first injection molding 120 may be manufactured by inserting the antenna pattern 110 into a mold for manufacturing the first injection molding and injecting a synthetic resin for forming the first injection molding into the mold. In the present embodiment, the first injection molded product may be an inner surface of the mobile communication terminal case.

The forming of the second injection molded product (c) may be a step of forming the second injection molded product 120 covering the other surface of the antenna pattern 110.

In this step, the second injection molded product 130 may be formed by an in-molding process. That is, the first injection part 120 to which the antenna pattern 110 is attached is inserted into the mold for fabricating the second injection molding, and the synthetic resin for forming the second injection molding is injected into the mold to make the second injection molding ( 130) can be prepared. In this embodiment, the second injection molded product may be an outer surface of the mobile communication terminal case.

As described above, in the method of manufacturing a mobile communication terminal case with an antenna according to the present embodiment, the step of forming the first injection molding and the step of forming the second injection molding may be performed separately in order to embed the antenna in the case. . In the forming of the first injection molding, the antenna pattern 110 may be attached to one surface of the first injection molding to prevent the antenna pattern from moving during the injection process. In addition, after the antenna pattern is deformed into a structure having a three-dimensional shape, the first injection molded product may be formed to maximize the radiation area of the antenna pattern according to the shape of the first injection molded product.

2 (a) and 2 (b) are structures of a mold used in the method for manufacturing a mobile communication terminal case with an antenna according to another embodiment of the present invention.

2A is a cross-sectional view of the first mold 240 capable of forming the first injection molded product in the mobile communication terminal case according to the present embodiment.

The first mold 240 may be in contact with the antenna pattern 210 and may include a first portion 241 forming a lower portion of the first mold, a second portion 242 scanning the molding material and forming an upper portion of the first mold. And a third portion 243 connected to the reservoir of molding material through the nozzle.

In the process of forming the first injection molding, first, the antenna pattern 210 may be inserted into the first portion 241 of the mold. An interior of the first portion 241 of the first mold may be formed in the form of the first injection molded product. The antenna pattern 210 may be processed along the inner shape of the first portion 241 and then inserted into the first portion 241.

All parts 241, 242, 243 of the first mold are joined, and a molding material is injected into the space between the first part 241 and the second part 242 of the first mold at a constant pressure through a nozzle. Can be. The molding material may be a polymer-based material for forming a terminal case. After the molding material injected into the first mold is filled in the space between the second portion 242 and the first portion 241 of the mold, the first mold may be maintained at a constant pressure.

When the molding material injected into the first mold is cooled and cured and then separated from the first mold 240, a first injection molded product having the antenna pattern 210 attached to one surface may be formed.

2B is a cross-sectional view of the second mold 250 capable of forming the second injection molded product in the mobile communication terminal case according to the present embodiment.

In the second mold 250, a first injection molded part 220 to which the antenna pattern 210 is attached is disposed, and the first part 251 forming the lower part of the second mold, a molding material is scanned, and the second mold 250 is formed. It may be composed of a second portion 252 forming an upper portion and a third portion 253 connected to a reservoir of molding material through a nozzle.

In the process of forming the second injection molding, first, the first injection molding 220 to which the antenna pattern 210 is attached may be inserted into the first part 251 of the mold. Here, the first injection molded part 220 to which the antenna pattern 210 is attached may be disposed on the first part 251 of the mold so that the antenna pattern 210 faces upward.

All parts 251, 252, 253 of the second mold are combined, and a molding material is injected into the space between the first part 251 and the second part 252 of the second mold at a constant pressure through a nozzle. Can be. The molding material may be a polymer-based material for forming a terminal case. After the molding material injected into the second mold is filled in the space between the second part 252 and the first part 251 of the mold, the second mold may be maintained at a constant pressure.

When the molding material injected into the second mold is cooled and cured and then separated from the second mold 250, the antenna pattern 210 is formed between the first injection molding 220 and the second injection molding. A case can be formed.

3A to 3C are flowcharts illustrating a method of manufacturing a mobile communication terminal case in which an antenna is built according to still another embodiment of the present invention.

Referring to (a) to (c) of Figure 3, the manufacturing process of the mobile terminal case with an antenna according to the present embodiment, the step of forming an antenna pattern (a), forming a first injection ( b), and (c) forming a second injection product.

The step (a) of forming the antenna pattern may be a step of forming an antenna pattern in a form suitable for a frequency used in a mobile communication terminal.

In the present embodiment, the antenna pattern 310 may be a flat antenna pattern.

The antenna pattern 310 may be formed by pressing a metal plate. The material of the antenna pattern may be implemented in various ways. The antenna pattern may be a metal plate having flexibility. In the present embodiment, the antenna pattern 310 may include an interconnect pin 311 for electrically connecting with a circuit inside the mobile communication terminal. The interconnection pin 311 may extend from one surface of the antenna pattern 310.

In the present embodiment, the forming of the antenna pattern may include a process of processing the antenna pattern to have a three-dimensional shape. The shape of the mobile communication terminal case in which the antenna pattern is embedded may have a three-dimensional shape. Therefore, if the antenna pattern is processed in advance according to the shape of the mobile communication terminal case, an unnecessary process can be reduced in the subsequent process of forming the mobile communication terminal case by the injection process.

The step (b) of forming the first injection molded product may include forming the first injection molded product 320 to cover one surface of the antenna pattern 310. One surface of the antenna pattern 310 in contact with the first injection molded part 320 may be a surface in which the interconnection pin 311 is extended.

In this step, the first injection molding 320 may be formed by an in-molding process. That is, the first injection molded product may be manufactured by inserting the antenna pattern 310 into a mold for manufacturing the first injection molded product, and injecting a synthetic resin for forming the first injection molded product into the mold. In this step, the open end of the interconnection pin 311 may be formed to be exposed to the surface of the first injection molding (320). One end of the connection pin 311 exposed on the surface of the first injection molded product may be in contact with a circuit of a substrate disposed inside the mobile communication terminal to electrically connect the circuit and the antenna pattern.

The step (c) of forming the second injection molding may include forming a second injection molding 330 covering another surface of the antenna pattern 310.

In this step, the second injection molding 330 may be formed by an in-molding process. That is, the first injection molded part 320 to which the antenna pattern 310 is attached is inserted into the mold for manufacturing the second injection molded product, and the synthetic resin for forming the second injection molded product is injected into the mold to form the second injection molded product ( 330 can be manufactured. In this embodiment, the second injection molded product may be an outer surface of the mobile communication terminal case.

As described above, in the method of manufacturing a mobile communication terminal case in which an antenna is embedded according to the present embodiment, a step of forming a first injection molding and a process of forming a second injection molding may be performed in order to embed the antenna in the case. have. In the forming of the first injection molding, the antenna pattern 310 may be attached to one surface of the first injection molding 320 to prevent the antenna pattern from moving during the injection process. In addition, after the antenna pattern is deformed into a structure having a three-dimensional shape, the first injection molded product may be formed to maximize the radiation area of the antenna pattern according to the shape of the first injection molded product. In addition, by forming the interconnect pin 311 extending from the antenna pattern 310 before the process of forming the first injection molding, an additional process for connecting the antenna pattern 310 with a circuit board mounted inside the terminal or Reduced parts

4 is a cross-sectional view of a mobile communication terminal case incorporating an antenna according to another embodiment of the present invention.

The mobile communication terminal case 400 in which the antenna according to the present embodiment is embedded may include a film type antenna pattern 410, a first injection molding 420, and a second injection molding 430.

The film type antenna pattern 410 may be a flat antenna pattern. The antenna pattern 410 may be formed by pressing a metal plate. The material of the antenna pattern may be implemented in various ways. The antenna pattern may be a metal plate having flexibility.

The first injection molding 420 may be formed to cover one surface of the antenna pattern 410. The first injection molding 420 may be formed by an in-molding process using a polymer-based material.

The second injection molding 430 may be formed on the first injection molding 420 to cover another surface of the antenna pattern 410. The second injection molding may be formed by an in-molding process using a polymer-based material.

In the present embodiment, the antenna pattern 410 may further include an interconnection pin 411 extending from one surface of the antenna pattern. The interconnection pin 411 may extend from one surface of the antenna pattern 410. As such, the interconnection pin 411 is integrally formed with the antenna pattern 410, and thus, the antenna pattern 410 is embedded in the mobile communication terminal case, and then an additional device for connecting the antenna pattern with the circuit of the mobile communication terminal is provided. The process can be reduced.

In the present embodiment, the first injection molding 420 and the second injection molding 430 may be formed of different materials. In the present embodiment, the first injection molding 420 may form an inner surface of the mobile communication terminal case, and the second injection molding 430 may form an outer surface of the mobile communication terminal case. The mobile terminal case may be part of a completed mobile terminal. The interconnection pin 411 extending from the antenna pattern may be connected to a substrate mounted in the mobile communication terminal.

Therefore, the antenna pattern 410 is better to minimize the interference with the components mounted therein in relation to the inside of the terminal, and to maximize the radiation characteristics in the relationship with the outside of the terminal. Accordingly, the first injection molded material 420 may include a material capable of blocking electromagnetic waves generated from an electronic component mounted in the mobile communication terminal, thereby providing a shielding effect between the antenna pattern and the internal electronic component. It can increase. The second injection molding 430 may include a material having a high dielectric constant in order to increase the radiation effect of the antenna pattern.

It is intended that the invention not be limited by the foregoing embodiments and the accompanying drawings, but rather by the claims appended hereto. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

1A to 1C are flowcharts illustrating a method of manufacturing a mobile communication terminal case in which an antenna is installed according to an embodiment of the present invention.

2 (a) and 2 (b) are structures of a mold used in the method for manufacturing a mobile communication terminal case with an antenna according to another embodiment of the present invention.

3 (a) to 3 (c) are flowcharts illustrating a method of manufacturing a mobile communication terminal case in which an antenna according to another embodiment of the present invention is incorporated.

4 is a cross-sectional view of a mobile communication terminal case with an antenna according to another aspect of the present invention.

<Code Description of Main Parts of Drawing>

110 antenna pattern 120 first injection molding

130: second injection molding

Claims (1)

Antenna pattern; A first injection molding covering one surface of the antenna pattern; And A second injection molding covering another surface of the antenna pattern; Mobile communication terminal case with a built-in antenna.

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