KR20120000471A - A mobile phone case within antenna and manufacturing method thereof - Google Patents

Abstract

PURPOSE: A case for a mobile phone with antenna and a manufacturing method thereof are provided to reduce a failure rate by inserting a heterogeneous material antenna and finishing by a second injection. CONSTITUTION: An antenna(110) with a jack hole, a connector area(111), and a penetration hole(116) is provided. A case(120), which includes an insertion hole, a molding groove, and a fixing threshold, is provided. The antenna is inserted into the insertion hole. The case is arranged in the lower plate of mold, and a mold upper plate(134) with a fin part(138) is arranged in the fixing threshold. An injection solution is injected into the molding groove through an injection inlet port(136) of the mold upper plate.

Description

Mobile phone case with antenna and manufacturing method thereof

The present invention relates to a mobile phone case with a built-in antenna, and more particularly, inserting a film-shaped antenna into a groove formed inside the mobile phone case and fixing and fixing it by secondary injection, thereby preventing antenna distortion and dichroism. It relates to a mobile phone case and a method of manufacturing the same.

In addition, the present invention relates to a mobile phone case and a method for manufacturing a built-in antenna of a new technology to increase the productivity without the distortion and dichroic phenomenon in the case while embedding the antenna in the case.

A mobile terminal (hereinafter referred to as a “mobile phone”) is a high-tech device that includes a PDA, PMP, etc., and communicates wirelessly with a designated party anytime, anywhere while moving.

In order to increase the mobility of the mobile phone, it must be compact, light and easy to carry, and it needs an antenna to wirelessly contact with the other party and to transmit and receive communication signals while moving.

When the antenna has a length proportional to the wavelength of the radio frequency used for communication, the antenna has the best transmission and reception gain, and is exposed to the air, and there are types of dipole, helical, loop, and yagi depending on the shape.

The mobile phone is equipped with a 13.56 MHz band loop antenna defined in the contactless payment standard to provide the mobile banking function as an additional service and to transmit and receive data supporting the electronic money or credit card function of the USIM card in a non-contact manner. The loop antenna is provided in a battery pack.

As smartphones and near field communication (NFC) technologies are introduced and applied to mobile phones, a loop antenna is required, and the contactless interface using loop antenna supports wireless reader / writer, card emulation, and peer-to-peer functions and technical standards. Is governed by the rules of ISO 14443, ISO 18092, etc.

Patent Registration No. 10-0944932 (2010. 02. 23.) is a technology that embeds the antenna inside the mobile phone case according to the prior art 'a mobile communication terminal case with a built-in antenna and a manufacturing method thereof, a mobile communication terminal' have.

This conventional technology has an advantage of reducing the size, weight and volume of the mobile phone and simplifying the appearance by embedding an antenna inside the mobile phone.

However, in the prior art, since the case formed by the antenna and the synthetic resin is molded in a double injection method, the internal heat of the injection liquid heated in the double injection process is secondarily heated, and the thermal expansion of the synthetic resin constituting the heated antenna and the case is performed. There is a problem that a time difference occurs in the cooling process to cool due to the coefficient difference, such that distortion or distortion (hereinafter, referred to as 'twist') in the case occurs.

In addition, the prior art has a problem that a two-color phenomenon that the color is changed in the double injection part because the double injection of the antenna and the synthetic resin having a different material properties.

Therefore, in the technology of configuring the antenna inside the mobile phone case, there is a need to develop a technology for improving the distortion does not occur and the distortion does not occur in the finished injection.

The present invention is to solve the problems and necessity of the prior art to provide a mobile phone case with a built-in antenna that does not cause distortion in the finished state when inserting and injecting a heterogeneous material in the synthetic resin and its manufacturing method to be.

In addition, an object of the present invention is to provide a mobile phone case with a built-in antenna and a method of manufacturing the same that does not occur when a different material is inserted into the synthetic resin to finish by secondary injection.

The present invention provides a mobile phone case with a built-in antenna that does not affect each other physical properties because the case and the antenna is not fused or adhered to each other while inserting and fixing the antenna of the heterogeneous material in the case made of a synthetic resin and a method of manufacturing the same For that purpose.

On the other hand, the present invention finishes the dissimilar materials inserted in the synthetic resin in the same state in the same material, so that the distortion and the discoloration does not occur, reduce the defective rate and increase the productivity of the mobile phone case with a built-in antenna case and its manufacturing method The purpose is to provide.

In order to achieve the above object, the present invention provides a step of providing a film-type antenna having a terminal hole, a terminal portion and a through hole, and forming an insertion groove for inserting the antenna, a molding groove to be molded and a fixing jaw, respectively. Providing a case, inserting the antenna into the insertion groove, placing the case on the lower plate of the mold, arranging the upper plate of the mold with pins on the fixing jaw, and the injection molding product through the injection hole of the mold top plate. It proposes a method for manufacturing a mobile phone case with an antenna comprising a step of injecting the molten injection solution.

Preferably, the antenna is a step of preparing a first protective film to protect from an external impact, the step of adhering the antenna pattern by any one method selected from the bonding of the etching, printed, pressed pattern to the first protective film, Preparing a second protective film that protects the exposed portion of the antenna pattern from external impact; forming a terminal hole exposing the position of the terminal portion of the antenna pattern on the second protective film; and the position of the terminal hole and the terminal portion. Laminating the second protective film to the exposed portion of the antenna pattern in a state where the same and the step of plating the terminal portion.

And the pin portion is inserted into the terminal hole so that the injection liquid does not flow into the terminal portion.

Here, the injection liquid is cooled and solidified, and the injection molded product and the case are made of thermoplastic synthetic resin.

In order to achieve the above object, the present invention provides a film-type antenna having a terminal hole, a terminal portion, and a through hole, an insertion groove into which the antenna is to be inserted, a molding groove to be molded and a fixing jaw, respectively; It is composed of a configuration including an injection molded by injecting and cooling the injection liquid by the mold lower plate is disposed on the lower side of the case to fix the case and the pin portion disposed on the fixing jaw and inserted into the terminal hole, the injection mold injection plate formed in the injection hole We present a mobile phone case with built-in antenna.

Preferably, the antenna comprises a first protective film, an antenna pattern formed in close contact with the first protective film, a terminal portion for inputting and outputting signals to and from the antenna pattern, and a terminal hole formed at a position of the terminal portion, and the terminal pattern is in close contact with the antenna pattern to prevent external impact. It comprises a second protective film to protect.

The antenna includes at least one of a 13.56 MHz band antenna, a DMB antenna, a WiFi antenna, a GPS antenna, and a Bluetooth antenna.

In addition, the injection molding is made by the injection liquid is contacted with the insertion groove of the case through the through hole of the antenna, fused and cooled.

On the other hand, the antenna is inserted between the injection molding and the case and consists of a fixed configuration separated from the case.

Here, the injection molding is configured to cover the antenna in a sealed state and to fusion contact with the molding groove of the case.

In addition, at least one through hole is formed at a portion where the antenna pattern of the antenna is not formed.

The present invention having the configuration as described above has an industrial use effect of reducing the occurrence rate of defects by inserting the antenna of the heterogeneous material into the mobile phone case made of synthetic resin and finishing with secondary injection, no distortion occurs.

In addition, the present invention of the configuration as described above has a convenient effect of inserting the antenna of the heterogeneous material in the mobile phone case made of synthetic resin and finishing with the secondary injection does not occur discoloration phenomenon.

And the present invention of the configuration as described above has the industrial use effect of providing a new manufacturing method for inserting the antenna of the heterogeneous material in the synthetic resin case and fixed in a close state in a physically separated state.

On the other hand, the present invention of the configuration as described above is inserted into the antenna of the heterogeneous material in the mobile phone case made of synthetic resin and fused with the same or similar material, so that the productivity is improved without distortion and discoloration, industrial use to reduce the manufacturing cost It works.

And the present invention of the configuration as described above has an industrial use effect of providing a mobile phone case of a new method in which the antenna is physically separated while inserting the antenna into the mobile phone case made of synthetic resin.

1 is a cross-sectional view for explaining a state in which a case and a film-type antenna are provided according to an embodiment of the present invention;
2 is a cross-sectional view for explaining a state in which a film-type antenna is disposed in a case and a mold is provided according to an embodiment of the present invention;
3 is a cross-sectional view illustrating a state in which a film-type antenna is disposed in a case and a mold is disposed together according to an embodiment of the present invention;
4 is a cross-sectional view illustrating a state in which injection liquid is injected into a molding groove of a case through an injection hole of a mold according to an embodiment of the present invention;
5 is a cross-sectional view for explaining the state in which the secondary injection is completed by placing the antenna in the case according to an embodiment of the present invention,
And
6 is a cross-sectional view for explaining a state in which the antenna terminal portion and the printed circuit board of the mobile phone case completed according to an embodiment of the present invention.

The terms or words used in the present specification and claims are not to be construed as being limited to the common or dictionary meanings, and the inventors may properly define the concept of terms in order to describe their own invention as the best manufacturing method. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Detailed descriptions and drawings of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

The mold is generally composed of a top plate and a bottom plate, and is engraved with the top and bottom plates separated from each other, and the thermoplastic material is injected and cooled to form the shape of the selected object. Also called.

Ultrasound is a frequency of sound pressure that cannot be audible to human beings, and is generally divided into ultrasonic waves of 20 KHz or more, and applied to sound wave detection, cutting and processing, emulsion generation, washing, and sterilization. It is applied to local fusion using thermoplastic heat generated by ultrasonic vibration of a thermoplastic resin.

The antenna pattern is a planar pattern selected from various planar shapes that form an electrical length of the antenna in a state of securing maximum transmission and reception gain in an optimal area.

In the description of the present invention, the 13.56 MHz band antenna is used to support a wireless interface including a read / write function, a P2P function, a card emulation function, and the like in a near field communication (NFC) and a wireless interface of a combination USIM card.

In general, the 13.56 MHz band antenna has a long electrical length, which is preferably configured as a loop antenna, and is applicable to cellular phones, PDAs, PMPs, data terminals, and traffic cards.

1 is a cross-sectional view illustrating a state in which a case and a film-type antenna are provided according to an embodiment of the present invention, and FIG. 2 is a film-type antenna disposed in a case and molded according to an embodiment of the present invention. 3 is a cutaway view for explaining the state provided, Figure 3 is a cutaway view for explaining the state of arranging a film-type antenna and a mold together in accordance with an embodiment of the present invention, Figure 4 is a present According to an embodiment of the present invention is a cutaway view for explaining the state of injecting the injection liquid into the molding groove of the case through the injection hole of the mold, Figure 5 is according to an embodiment of the present invention to arrange the antenna in the case And a cutaway view for explanation of a state in which secondary injection is completed.

Hereinafter, with reference to the accompanying Figure 1, it provides an antenna 110 and a case 120.

The antenna 110 includes a terminal portion 111, a terminal hole 112, a first protective film 113, an antenna pattern 114, a second protective film 115, and a through hole 116.

The first protective film 113 is formed on the lower side of the film-type antenna 110, and blocks physical, chemical, mechanical and electrical shocks applied from the outside, and blocks inflow of unnecessary foreign matter.

The magnitude of the impact that can be protected by the physical, chemical, mechanical and electrical properties and thickness of the first protective film 113 is generally different.

The antenna pattern 114 is a pattern formed on a plane for transmitting and receiving a wireless signal of a mobile phone with maximum gain. In the present invention, a thin thin metal material having good conductivity is used.

As a metal material, according to an embodiment, a thin thin plate including copper, aluminum, gold, silver, an alloy, and a conductive synthetic resin material may be used.

The antenna pattern 114 is formed by, for example, pressing, etching, printing, bonding, or the like, and is in a state of being in close contact with the first protective film 113.

In addition, the antenna pattern 114 may include a plurality of antennas of different bands at the same time among antennas including a 13.56 MHz band antenna, a DMB antenna, a WiFi antenna, a GPS antenna, a Bluetooth antenna, and the like.

That is, a plurality of bands of antennas may be included in one antenna pattern 114 in an electrically separated state, because electrical lengths of antennas resonating in each band are different.

The terminal portion 111 is configured at both ends of the antenna pattern 114, and is in electrical contact to input a radio transmission signal and output a radio reception signal. In the present invention, the terminal 111 is preferably formed by plating.

The material used for plating may be any one or more selected from among gold, silver, lead, and alloys, for example, and may use a synthetic resin type material having excellent conductivity.

The second protective film 113 is preferably made of the same or similar material as the first protective film 113, the terminal hole 112 is formed so as to be in electrical contact with the terminal portion 111 from the outside. It is configured to be in close contact with the antenna pattern 114 and the first protective film 113 in the state, and to protect the antenna pattern 114 by blocking an external shock is the same as the first protective film 113.

The terminal hole 112 is preferably equal to the size of the terminal portion 111.

The through holes 116 may be formed of a plurality of holes penetrating through the antenna 110 in a state in which the through holes 116 are moved away from the antenna pattern 114.

Hereinafter, a method of manufacturing the antenna 110 according to the present invention will prepare a first protective film 113 to block external impact (a).

The pattern 114 of the antenna selected on the prepared first protective film 113 is formed by one or more methods selected from a method including press, etching, printing, and adhesion, thereby closely contacting (b).

In this case, the antenna pattern 114 may include any one or more of those including 13.56 MHz band antenna, DMB antenna, WiFi antenna, GPS antenna, and Bluetooth antenna, and may simultaneously configure two or more selected antennas.

It is preferable to simultaneously configure two or more antennas in order to make the most of the small area allowed in a small mobile terminal such as a mobile phone.

A second protective film 115 is prepared to protect the exposed antenna pattern 114 from external impact while the antenna pattern 114 is bonded (c).

Here, it is preferable that the first protective film 113 and the second protective film 115 use the same or similar materials.

A terminal hole 112 for exposing the position of the terminal 111 of the antenna pattern 114 is formed in the prepared second protective film 115 (d).

The second protective film 115 is closely adhered to the exposed portion of the antenna pattern 114 in a state in which the position of the terminal hole 112 and the terminal portion 111 coincide by a laminate method (e).

And the terminal portion 111 is plated so that the signal transmission is good by the electrical contact (f).

At this time, the plating material may be any one selected from among gold, silver, lead and the like.

The case 120 is made of a synthetic resin, and constitutes the outer appearance of the mobile phone according to the present invention, and forms an insertion groove 122, a molding groove 124, and a fixing jaw 126 inside thereof.

Insertion groove 122 is a groove which is fixed in the thickness and shape of the antenna 110, the antenna 110 is disposed or inserted, the molding groove 124 is formed around the insertion groove 122, the thermoplastic synthetic resin is The injection liquid which is melted by a predetermined heat is injected and is a groove which is solidified and fixed to a thickness in the range of 0.5 to 3 millimeters (mm) by cooling, and the fixing jaw 126 is provided with a mold upper plate or a terminal portion of the antenna 110 ( 111 is a region to which a printed circuit board (PCB), which is in electrical contact with 111, is fixed.

Hereinafter, with reference to the accompanying FIG. 2, the antenna 110 is placed and inserted into the insertion groove 122 of the case 120, and the mold lower plate 132 is disposed below the case 120, and the case ( The mold top plate 134 is disposed on the fixing jaw 126 of the 120.

Here, the mold lower plate 132 and the mold upper plate 134 preferably constitute a set of molds 130.

The mold lower plate 132 is preferably formed at the lower side of the case 120 and forms a groove for fixing the case 120 so that the case 120 is disposed and inserted so as not to move.

The mold top plate 134 forms an injection hole 136 and a pin part 138 for injecting an injection liquid made of thermoplastic synthetic resin into a molten injection solution.

At this time, the pin portion 138 is formed at the same position as the terminal hole 112 of the antenna 110, the injection hole 136 is formed in the through hole 116 position of the antenna 110 and the region to be secondary injection, respectively. .

Hereinafter, with reference to the accompanying FIG. 3, the case 120 is inserted into the corresponding groove of the lower mold plate 132 and fixed, and the mold upper plate 134 is disposed at the fixing jaw 126.

The pin part 138 is inserted into the terminal hole 112 of the antenna 110 to prevent foreign substances from flowing into the terminal hole 112.

At this time, the space between the molding groove 124 is sealed between the antenna 110 and the mold top plate 134 inserted into the case 120.

Here, the thickness of the antenna 110 is 300 to 400 micrometers (um) and the height of the space formed by the molding groove 124 is relatively preferably within the range of several millimeters.

Hereinafter, with reference to the accompanying Figure 4, through the injection molding hole 136 of the upper mold 134, the injection molding material 140 made of thermoplastic synthetic resin melted by the heat molding groove 124 and the through hole Inject to (116), the second injection (2) to completely fill.

The injection liquid injected into the injection hole 136 is fused (glued) in a molten state in contact with the molding groove 124, and the injection liquid injected through the through hole 116 contacts the bottom of the insertion groove 122. It is fused (glued) in a molten state, and the fused state is solidified while cooling.

Here, since the pin part 138 is blocking the terminal hole 112 of the antenna 110, the injection liquid in which the injection material 140 is melted does not flow into the terminal part 111.

In addition, while the pin portion 138 coincides with the terminal hole 112, the position of the mold of the mold upper plate 134 may be correctly determined.

The mold is separated after the injection liquid is cooled and solidified while the secondary injection is completed.

According to the technique of the present invention, the antenna 110 provides a new manufacturing method that is fixed in a physical and mechanical separation state without chemically coupling to the case 120.

And the through-hole 116 is formed in the middle so that the injection made of synthetic resin directly fusion with the insertion groove of the case 120 is fixed mechanically and at the same time secure the separated antenna 110 in a stable state.

Hereinafter, with reference to the accompanying FIG. 5, since the antenna 110 is disposed in the insertion groove 122 and the second injection is performed using the mold upper plate 134 and the mold lower plate 132, the immersion groove 124 penetrates. Injecting the injection liquid into the ball 116 and solidified by cooling the injection molding 140 is fused and fixed to the molding groove 124 and the insertion groove 122 of the case 120, respectively.

In this case, the antenna 110 is physically and mechanically separated from the case 120.

Since the cooling case 120 is separated from the mold upper plate 134 and the mold lower plate 132, the mobile phone case 100 of the completed state is illustrated by one embodiment.

In the case 120 of the present invention, the thickness of the insertion groove 122 into which the antenna 110 is disposed and inserted is relatively thinner than that of other portions.

The injection molded product 140 made of thermoplastic synthetic resin is melted by heat to form an injection liquid.

Here, the case 120 is not deformed by heat because the antenna 110 is blocked in the middle without the injection liquid directly contacting the thin insertion groove 122.

At this time, although some of the injection liquid is in contact with the insertion groove 122 through the through-hole 116, while forming a plurality of the through-hole 116 and adjusting the diameter while maintaining a sufficient function of fixing the antenna 110 The antenna 110 and the case 120 maintain a state in which they are physically and mechanically separated, and because no heat is transmitted to the case 120, the antenna 110 and the case 120 provide a new manufacturing method in which deformation or distortion due to heat does not occur.

In addition, since the antenna 110, which is a heterogeneous material, is kept in a separated state without being fused to a thin portion of the case 120, there is an advantage in that a dichroism phenomenon in which the color is changed in the corresponding portion does not occur.

On the other hand, when a failure occurs in the case 120, it is possible to easily separate the antenna 110 from the case 120, to recycle the antenna 110 or to facilitate the synthetic resin resources of the case 120 Can be recycled.

6 is a cross-sectional view for explaining a state in which the antenna terminal portion and the printed circuit board of the mobile phone case completed according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the terminal portion 111 and the terminal portion 172 of the printed circuit board 170 and the terminal portion 111 of the antenna 110 is inserted and constituting the mobile phone case 100 by the secondary injection It is in contact.

The printed circuit board 170 is configured to transmit or receive a signal by contacting the antenna 110, and may be fixed to the fixing jaw 126 of the cases 120 and 121.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: cell phone case 110: antenna
111: terminal 112: terminal hole
113: first protective film 114: antenna pattern
115: second protective film 116: through hole
120: case 122: insertion groove
124: molding groove 126: fixed jaw
130: mold 132: mold lower plate
134: mold top plate 136: injection molding inlet
138: pin portion 140: injection molding
170: printed circuit board 172: terminal

Claims (11)

Providing a film type antenna having a terminal hole, a terminal portion, and a through hole;
Providing a case having an insertion groove into which the antenna is to be inserted, a molding groove to be molded and a fixing jaw respectively;
Inserting the antenna into the insertion groove, arranging the case on the lower plate of the mold, and arranging an upper plate of the mold with pins on the fixing jaw; And
Injecting the injection liquid in which the injection material is melted into the molding groove through the injection injection hole of the mold top plate; Method of manufacturing a cell phone case with a built-in antenna.
The method of claim 1, wherein the providing of the film-shaped antenna comprises:
Preparing a first protective film to protect from an external impact;
Forming an antenna pattern on the first protective film by any one method selected from among adhesion of an etched, printed, and pressed pattern;
Preparing a second protective film that protects the exposed portion of the antenna pattern from an external impact;
Forming a terminal hole exposing the position of the terminal portion of the antenna pattern on the second protective film;
Laminating the second protective film to the exposed portion of the antenna pattern in a state where the position of the terminal hole and the terminal portion is coincident with each other; And
Plating the terminal part; Method of manufacturing a mobile phone case with an antenna, characterized in that comprises a.
The method of claim 1, wherein the pin portion,
The method of manufacturing a mobile phone case with an antenna, characterized in that the injection is inserted into the terminal hole does not flow into the terminal.
The method of claim 1,
The injection liquid is cooled and solidified,
The injection method and the case is a method of manufacturing a mobile phone case with an antenna, characterized in that made of a thermoplastic synthetic resin material.
A film-type antenna having a terminal hole, a terminal portion, and a through hole;
A case having an insertion groove into which the antenna is to be inserted, a molding groove to be molded and a fixing jaw respectively;
An injection molded product formed by injecting and cooling an injection liquid by a mold lower plate disposed below the case to fix the case, a pin part disposed on the fixing jaw and inserted into the terminal hole, and a mold upper plate forming an injection hole; Cell phone case with an antenna made of a configuration comprising a.
The method of claim 5, wherein
The antenna,
First protective film;
An antenna pattern formed in close contact with the first protective film;
A terminal unit for inputting / outputting a signal to the antenna pattern;
A second protective film forming a terminal hole at a position of the terminal part and being in close contact with the antenna pattern to protect from an external impact; Cell phone case with a built-in antenna, characterized in that the configuration consisting of.
The method of claim 5, wherein
The antenna,
A mobile phone case with a built-in antenna, characterized in that the configuration comprising any one or more of the 13.56 MHz band antenna, DMB antenna, WiFi antenna, GPS antenna, Bluetooth antenna.
The method of claim 5, wherein the injection molded product,
Cell phone case with a built-in antenna, characterized in that the injection liquid is made by contacting, fusion and cooling through the insertion hole of the antenna through the through hole of the antenna.
The method of claim 8, wherein the antenna,
The mobile phone case with an antenna, characterized in that the insert is formed between the injection and the case and is fixed in a separated state from the case.
The method of claim 9, wherein the injection molded product,
Cell phone case with a built-in antenna, characterized in that for covering the antenna in a sealed state and fused in contact with the molding groove of the case.
The method of claim 8, wherein the through hole,
Cell phone case with a built-in antenna, characterized in that at least one portion is configured in the antenna pattern of the antenna is not formed.

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