KR20140099420A - Antenna and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to an antenna manufacturing method and an antenna manufactured thereby. The present invention provides an antenna for local area wireless communications or an antenna for wireless charging with excellent product operation reliability by punching metal foil disposed on one surface of a base material, forming an antenna pattern, and transferring the antenna pattern on one surface of an insulating film. The present invention reduces manufacturing costs by simplifying a manufacturing process.

Description

TECHNICAL FIELD [0001] The present invention relates to an antenna,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna, and more particularly, to an NFC or NFC / WPC integrated antenna used in a portable terminal such as a smart phone and a method of manufacturing the same.

Near Field Communication (NFC) refers to a technique for performing wireless communication at a short distance using a standardized frequency of 13.56 MHz between a portable terminal and an external device. In addition to billing, short-range wireless communications are widely used in supermarkets and general shops for transporting travel information for goods information and visitors, as well as for access control locks.

In recent years, the market for portable terminals such as tablets and smart phones is rapidly expanding. The portable terminal includes functions for exchanging information, settlement, ticket reservation, and searching among terminals using near field wireless communication (i.e., NFC) There is a tendency. Accordingly, the demand for an antenna for a short-range wireless communication used in a short-range wireless communication method is increasing.

Antenna for short-range wireless communication is manufactured by a flexible printed circuit board (FPCB) method. That is, the antenna for short-range wireless communication is manufactured by forming an antenna pattern by printing a conductive paste on an insulating film.

It is desirable that the antenna including the antenna for the short-range wireless communication should have a predetermined thickness or more in order to minimize heat generation and power consumption during operation.

However, there is a problem that it is difficult to secure the antenna pattern to a predetermined thickness or more because the conductive paste is printed on the insulating film by the FPCB method to form the antenna pattern. In order to compensate the above problem, There was a hassle to add plating.

Further, since plating is added to the printed antenna pattern, the manufacturing cost is high and the productivity is low.

Korean Patent Publication No. 2007-0043922 (Apr. 26, 2007) "A magnetic core member for an antenna module, an antenna module and a portable information terminal having the same,

An object of the present invention is to provide an antenna manufacturing method which can easily secure the thickness of the antenna pattern, can be manufactured at a low cost, can be manufactured at a low cost, and has excellent operation reliability, and an antenna manufactured by the method.

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a loop antenna pattern by cutting a metal foil bonded to a substrate; And transferring the patterned antenna pattern to an insulating film.

According to another aspect of the present invention, there is provided a method of manufacturing an antenna, comprising: a) forming an antenna pattern having first and second terminal portions by tapping a metal foil bonded to the base; b) preparing an insulating film having neighboring first and second terminal holes; c) aligning the first terminal hole of the insulating film and the first terminal portion of the antenna pattern to transfer the antenna pattern to the insulating film; And d) folding the second terminal portion of the antenna pattern transferred onto the insulating film toward the first terminal portion so as not to be short-circuited with the antenna pattern, and fixing the second terminal portion after aligning the second terminal portion with the second terminal hole of the insulating film. Is solved.

The present invention also provides a method of manufacturing a semiconductor device, comprising: laminating a copper foil on a PET film; Forming a loop-shaped antenna pattern having a first terminal portion on an outer side and a second terminal portion on an inner side by tapping the copper foil; Removing scraps of the copper foil except for the antenna pattern; Preparing an insulating film having neighboring first and second terminal holes; Aligning the first terminal hole of the insulating film and the end of the first terminal portion so as to transfer the antenna pattern to the insulating film; Attaching an insulating tape for preventing short-circuit to an antenna pattern portion where the second terminal portion overlaps when the second terminal portion is bent; Bending a second terminal portion of the antenna pattern to an upper surface of the insulating tape so that an end of the second terminal portion coincides with the second terminal hole; Attaching a terminal cover sheet for reinforcing and preventing oxidation of the bent second terminal portion and the first terminal portion to an insulating film; Completely bonding the antenna pattern to the insulating film using a hot press process; TIN plating the end portions of the first and second terminal portions; And etching the insulating film in a finally designed antenna shape.

The present invention also provides an antenna pattern formed by tapping a metal foil laminated on a base material, the antenna pattern being looped in a plurality of turns; And an insulating film on which the antenna pattern is transferred.

An antenna pattern formed of a metal foil is transferred to an insulating film by a foot pad, so that the manufacturing process is simple, and the product operation reliability is excellent. In addition, since the plating process is not included, the manufacturing cost is greatly reduced.

1 is a process diagram of an antenna manufacturing method according to an embodiment of the present invention,
2 is a process diagram of an antenna manufacturing method according to another embodiment of the present invention,
FIG. 3 is a process chart of a method of manufacturing an antenna according to a preferred embodiment of the present invention,
4 is a cross-sectional view showing an example of a step of forming an antenna pattern in the present invention
5 to 7 are views showing different examples of the step of transferring in the present invention
8 is a view showing a step of attaching an insulating tape in the present invention
9 is a view showing an example of folding a second terminal portion in the present invention
10 is a view showing an example in which the terminal cover sheet is attached in the present invention
11 is a plan view showing an antenna manufactured according to the present invention.
12 is a perspective view showing another example of the antenna manufactured according to the present invention.
13 and 14 are views showing an example in which the ends of the first terminal portion and the second terminal portion are bent in the present invention
15 to 17 are views showing an embodiment of the antenna of the present invention
18 is a view showing another example of the terminal cover sheet in the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, a method of manufacturing an antenna according to an embodiment of the present invention includes forming a loop-shaped antenna pattern by tapping a metal foil bonded to a base material, and transferring the antenna pattern to a dielectric film Lt; / RTI >

2, a method of manufacturing an antenna according to the present invention includes the steps of: a) forming an antenna pattern having first and second terminal portions by tapping a metal foil bonded to a base material; b) C) aligning the first terminal holes of the insulating film and the first terminal portions of the antenna pattern to transfer the antenna pattern to the insulating film, and d) And folding the second terminal portion of the antenna pattern transferred to the insulating film toward the first terminal portion so as not to be short-circuited with the antenna pattern, and fixing the second terminal portion after aligning the second terminal portion with the second terminal hole of the insulating film.

The substrate is a very thin and transparent film provided to keep the antenna pattern in the shape of an antenna. For example, it may be one of a PI film and a PET film. For example, a PET film having a relatively low price may be used do. The insulating film is an ET film or a PI film. The PI film is thin, flexible, excellent in heat resistance and resistance to crushing, has little dimensional change, and is resistant to heat. Therefore, when a metal foil is heat- And the PET film is advantageous in that the price of the PI film is comparatively low.

The metal foil may be any one of an aluminum foil and a copper foil or an Ag foil.

The thickness of the substrate is 60 to 90 占 퐉, the thickness of the insulating film is 25 to 40 占 퐉, and the thickness of the metal foil is 10 to 35 占 퐉.

3, the step of joining the copper foil to the PET film comprises the steps of: forming a loop-shaped antenna pattern having a first terminal portion on the outer side and a second terminal portion on the inner side by tapping the copper foil; Removing the scraps of the copper foil, preparing an insulating film having neighboring first and second terminal holes, aligning the first terminal holes of the insulating film and the end portions of the first terminal portions to align the antenna patterns Transferring the film to the insulating film; Attaching an insulating tape for preventing short-circuit to an antenna pattern portion where the second terminal portion overlaps when the second terminal portion is bent; Bending a second terminal portion of the antenna pattern to an upper surface of the insulating tape so that an end of the second terminal portion coincides with the second terminal hole; Attaching a terminal cover sheet for reinforcing and preventing oxidation of the bent second terminal portion and the first terminal portion to an insulating film; Completely bonding the antenna pattern to the insulating film using a hot press process; TIN plating the end portions of the first and second terminal portions; And etching the insulating film in a finally designed antenna shape.

Wherein the first and second terminal portions are aligned with the first and second terminal holes by aligning the first and second terminal portions with the first and second terminal holes, As shown in Fig.

A step (600) of forming the insulating film is a step of removing an unnecessary portion of the insulating film from the insulating film around the antenna pattern by manufacturing the finally designed antenna by tapping the insulating film.

Referring to FIG. 4, the step of forming the antenna pattern will be described below. The metal foil 20 is adhered to one surface of the base material 10 and joined together. The metal foil 20 is a copper foil excellent in cost efficiency. In addition to the copper foil, any metal foil 20 capable of forming the antenna pattern 30 can be used, and examples thereof include aluminum foil or silver foil .

The metal foil 20 is punched to correspond to the antenna pattern 30 to be manufactured. The base material 10 may be half-cut at a portion corresponding to the antenna pattern 30 so that the metal foil 20 on which the antenna pattern 30 is punched may be adhered to the surface of the base material 10 . In addition, the antenna pattern 30 is formed to have the first terminal portion 34 and the second terminal portion 32, and it is unnecessary to separately form the terminal portions. The antenna pattern 30 is formed such that the first terminal portion 34 is located outside the antenna pattern 30 and the second terminal portion 32 is located inside the antenna pattern 30.

When the portion of the metal foil 20 excluding the antenna pattern 30 is removed, only the antenna pattern 30 is left on one surface of the base material 10.

The antenna pattern 30 is an antenna pattern 30a for short-range wireless communication formed in a loop shape having a plurality of turns. In the present invention, the short-range wireless communication antenna pattern 30a is formed in a rectangular loop shape. For example.

In addition, in the step of preparing the insulating film, the insulating film 40 has two neighboring terminal holes, that is, a first terminal hole 41b and a second terminal hole 41a. The first terminal hole 41b is a hole for exposing the first terminal portion 34 to the back surface of the insulation film 40 and the second terminal hole 41a is a hole for exposing the second terminal portion 32 to the insulation And is exposed to the back surface of the film 40. The back surface of the insulating film 40 is opposite to the surface to which the antenna pattern 30 is transferred.

Each of the first and second terminal portions 34 and 32 is exposed at both sides of the insulating film 40 in correspondence with the first terminal hole 41b and the second terminal hole 41a. Embodiments of the first and second terminal portions 34 and 32 will be described in more detail below.

The patterned antenna pattern 30 is transferred to the insulating film 40.

In the transferring step, an adhesive layer to which the insulating film 40 is adhered is provided on one side of the insulating film 40 to which the antenna pattern 30 is transferred. Alternatively, the adhesive layer may be provided on the surface of the antenna pattern 30.

That is, the adhesive layer is provided on one side of the insulating film 40 on which the antenna pattern 30 is transferred or on the surface of the antenna pattern 30 so that the antenna pattern 30 is electrically connected to the insulating film 40 To be transferred to one side of the recording medium.

An adhesive having a higher adhesive strength to the adhesive layer than the adhesive layer of the base material 10 is provided and the antenna pattern 30 held in a state of being adhered to the base material 10 is smoothly transferred to the insulating film 40 .

In the transferring step, the antenna pattern 30 is aligned and transferred so that the first terminal portion 34 is aligned with the first terminal hole 41b.

5, the transferring step may include a step of removing the portion of the metal foil 20 excluding the antenna pattern 30, arranging the substrate 10 and the insulating film 40 so as to overlap with each other, And then the antenna pattern 30 is transferred to the insulating film 40 by pressing. The substrate 10 is separated from the insulating film 40 after thermocompression bonding.

A portion of the antenna pattern 30 except for the antenna pattern 30 may be removed from the metal foil 20 while the antenna pattern 30 is pressed by a jig capable of pressing a part or all of the antenna pattern 30. This is to prevent a portion of the antenna pattern 30 from being removed together when the portion of the metal foil 20 excluding the antenna pattern 30 is removed.

That is, the transferring step includes a step of removing a portion (scrap) excluding the antenna pattern 30 from the substrate while a part or the whole of the antenna pattern 30 is pressed by using a jig.

In the transferring step, the thermal compression bonding temperature for transferring the antenna pattern 30 is in the range of 70 to 200 ° C, the thermal compression bonding time is 5 to 10 minutes, and the pressure is 700 to 1200 PSI. The process of separating the substrate 10 removes the substrate 10 after the antenna pattern 30 is transferred to the insulating film 40.

Referring to FIG. 6, in the second embodiment of the transferring step, the antenna pattern 30 may be separated from the substrate 10 and transferred to the insulating film 40.

The transferring step may include separating the antenna pattern 30 from the substrate 10 by vacuum adsorption using a mold having a vacuum adsorption pattern corresponding to the shape of the antenna pattern 30, Is directly transferred to one surface of the insulating film 40 as an example.

More specifically, the vacuum adsorption pattern is positioned on the metal mold so as to correspond to the antenna pattern 30, and then the antenna pattern 30 is adsorbed by the vacuum adsorption pattern so that the substrate 10 and the metal foil 20 Portions of the antenna pattern 30 except for the antenna pattern 30 are separated and removed at a time, and then the antenna pattern 30 is directly transferred to one surface of the insulating film 40.

The second embodiment of the transferring step can be automated and the working time is shortened.

Referring to FIG. 7, the third embodiment of the transferring step includes a step of placing the substrate 10 and the insulation film 40 in a superposed state and applying heat only to the portion where the antenna pattern 30 is formed, And separating the substrate 10 from the insulating film 40 to remove a portion of the substrate 10 and the metal foil 20 excluding the antenna pattern 30 (scrap).

The transferring step is performed without removing the portion of the metal foil 20 except for the antenna pattern 30. That is, the antenna pattern 30 is formed in the metal foil 20.

The insulating film 40 is brought into contact with the surface of the metal foil 20 and only the portion where the antenna pattern 30 is formed is heated and pressed so that only the antenna pattern 30 is transferred to the insulating film 40 . When the base material 10 is detached in a state that only the antenna pattern 30 is transferred to the insulating film 40, a part of the metal foil 20 excluding the antenna pattern 30 is removed .

The third embodiment of the step 200 of transferring the antenna pattern 30 to one side of the insulating film 40 with a rubbing foot may be performed by using the substrate 10 and the metal foil 20 except for the antenna pattern 30 Are removed together.

Therefore, a separate transferring step is not necessary, so that the working time is greatly shortened, and the failure of the position of the antenna pattern 30 during the transfer operation is also prevented.

Although not shown, a method of manufacturing an antenna according to the present invention includes forming a terminal pattern of the antenna pattern 30 on the back surface of the insulating film 40 and forming a connection pattern connecting the terminal pattern and the antenna pattern As shown in FIG. Two terminal portions of the antenna pattern 30 are formed so as to be connected to both ends of the antenna pattern 30, respectively. The terminal portion and the connection pattern are formed by screen printing a conductive paste.

The conductive paste may be one selected from a silver paste, a copper paste, and a silver coated copper paste. Silver coated copper paste is a printing metal paste utilizing metal particles in the form of silver (Ag) coated on the surface of copper (Cu).

After the screen printing, the terminal portion or the pattern for connection is dried using hot air or near-infrared radiation. In the case of forming the terminal portion and the connection pattern by screen printing, the etching process is omitted and the pattern forming process is simple. The terminal portion or the connection pattern is preferably plated, and is plated with one of copper plating, nickel plating, and gold plating.

The gold plating is for improving reliability such as contact resistance and prevention of terminal oxidation, and can be performed by various methods such as electrolytic plating, electroless plating, and sputtering.

Of these, gold plating is most suitable for electroless plating due to cost problems. The gold plating on the terminal part using the electroless plating is performed by electroless plating nickel on the terminal part first, then electroless plating the gold thereon, and plating the gold by the reduction reaction.

In this case, the insulating film 40 is formed with via holes for connecting with the connection patterns at both ends of the antenna pattern. The via hole is for connecting the antenna pattern with the connection pattern.

When the antenna pattern is transferred to one side of the insulating film 40, the via hole is covered. The antenna pattern is electrically connected to the connection pattern through the via hole.

8 to 9, the fixing step may include the steps of attaching the insulating tape 50 to the antenna pattern portion on which the second terminal portion 32 is to be overlapped;

Folding the second terminal portion (32) of the antenna pattern (30) to the upper surface of the insulating tape (50); And

And attaching a terminal cover sheet (60) for reinforcement of strength and prevention of oxidation of the first and second terminal portions (34, 32).

The transferring step transfers the antenna pattern 30 to the insulating film 40 so that the end of the first terminal portion 34 is aligned with the first terminal hole 41b.

The first terminal portion 34 and the second terminal portion 32 are respectively connected to the antenna pattern 30 on the outer side and the inner side of the antenna pattern 30.

The first terminal portion 34 and the second terminal portion 32 are arranged at opposite ends of the first terminal portion 34 and the second terminal portion 32 in a direction opposite to each other.

The first terminal portion 34 and the second terminal portion 32 may be spaced apart from and adjacent to each other on the outside of the antenna pattern 30 for convenience in connection with the connector.

The second terminal portion 32 is separated from the insulating film 40 and folded in the outer direction of the antenna pattern portion 31 so as to be disposed in parallel with the first terminal portion 34. [

When the second terminal portion 32 is folded and arranged in parallel with the first terminal portion 34, the second terminal portion 32 overlaps the antenna pattern portion 31, resulting in electrical connection, that is, do. An insulating tape 50 is attached to the antenna pattern 30 to insulate the second terminal portion 32 from the antenna pattern 30.

The insulating tape 50 is attached to a part of the antenna pattern 30 in which the second terminal portion 32 is folded and overlapped, and is easily attached in a tape form having an adhesive on at least one side.

It is preferable that the insulating tape 50 is attached so that one end of each of the opposite side ends is aligned with the folded portion of the second terminal portion 32.

For example, the second terminal portion 32 is bent at the end side of the antenna pattern 30, and the side end portion of the insulating tape 50 is aligned with the side end portion of the antenna pattern 30 Respectively. The side end portion is a side end portion of the antenna pattern 30 to which the side end portion of the second terminal portion 32 is connected. The second terminal portion 32 may be folded at a portion connected to the antenna pattern 30 to more stably maintain the connection state with the antenna pattern 30. [

In the fixing step, the second terminal portion 32 is folded and positioned in parallel with the first terminal portion 34, and the end portion of the second terminal portion 32 is disposed coinciding with the second terminal hole 41b . The end portions of the first terminal portion 34 and the second terminal portion 32 coincide with the two first terminal holes 41b and the second terminal holes 41a formed in parallel with each other, As shown in FIG.

10, the step of attaching the terminal cover sheet 60 includes a step of attaching the terminal cover sheet 60 covering the portion of the first and second terminal portions 34, 32 arranged in parallel as described above ) To the insulating film (40). The terminal cover sheet (60) reinforces the strength of the first and second terminal portions (34, 32) and prevents oxidation.

The terminal cover sheet 60 can be easily attached in the form of a tape having an adhesive on at least one surface thereof.

The terminal cover sheet 60 is formed with terminal exposing holes 61 through which a portion of the first and second terminal portions 34 and 32 are exposed. The terminal exposing hole 61 is formed to correspond to the first terminal hole 41b and the second terminal hole 41a. When the first and second terminal portions 34 and 32 are exposed to the terminal exposing hole 61, the terminal exposing hole 61 is exposed along the rim of the first and second terminal portions 34 and 32, The sheet 60 is formed so as to partially overlap the first and second terminal portions 34 and 32. [

The terminal cover sheet 60 reinforces the rigidity of the first and second terminal portions 34 and 32 to damage the first and second terminal portions 34 and 32 by soldering or the like, prevent.

Although not shown, the antenna pattern 30 is completely bonded to the insulating film 40 by using a hot pressing process to prevent the antenna pattern 30 and the insulating film 40 from being separated from each other. The end portions of the first and second terminal portions 34 and 32 are electrically connected to other terminals and are exposed to the outside. Therefore, it is preferable that plating is performed by TIN plating in order to increase the strength and prevent oxidation.

11 is a front view showing an example of an antenna manufactured by the antenna manufacturing method according to the present invention. As described above, the antenna pattern 30 is transferred, and the insulating film 40, which has completed the step of attaching the terminal cover sheet 60, is punched out in a finally designed antenna shape to complete the manufacture of the antenna.

The touching step may be performed so as to form a groove between the end portions of the first and second terminal portions (34, 32) of the insulation film (40), thereby preventing a short circuit between the terminals.

Referring to FIG. 12, in the method of manufacturing an antenna according to the present invention, the antenna pattern 30 may include an antenna pattern 30b for wireless charging, which is formed in a loop shape having a plurality of turns. The radio-frequency charging antenna pattern 30b has a circular or elliptical shape and a plurality of turns of a loop shape.

The antenna pattern 30a for short-range wireless communication and the antenna pattern 30b for wireless charging must be secured to a predetermined thickness or more for effective operation. Since the metal foil 20 having a predetermined thickness or more is directly transferred to the insulating film 40 with a rubbing pad, the thickness of the antenna pattern 30 can be secured at a low cost.

The antenna pattern 30 includes a short-range wireless communication antenna pattern 30a formed in a loop shape that is wound a plurality of times and a wireless wireless communication antenna pattern 30a disposed in the short- And an antenna pattern 30b.

That is, the step 100 of forming the antenna pattern 30 forms the antenna pattern 30a for short range wireless communication and the antenna pattern 30b for wireless charging by pressing the metal foil 20.

The short-range wireless communication antenna pattern 30a and the wireless charging antenna pattern 30b formed on the metal foil 20 are transferred to one surface of the insulating film 40. [

Thereafter, the antenna can be manufactured according to the embodiment of the antenna manufacturing method according to the present invention.

When the short-range wireless communication antenna pattern 30a and the wireless-charging antenna pattern 30b are collated together and transferred, the short-range wireless communication antenna pattern 30a has first and second terminal portions 34 And 32 are integrally formed, and the first and second terminal portions 34 and 32 are arranged side by side through the fixing step.

On the rear surface of the insulating film 40, a terminal portion 30c of the wireless charging antenna pattern 30b, a quantity of the first and second terminal portions 34, 32 and the wireless charging antenna pattern 30b Thereby forming a connecting pattern 30d for connecting the ends.

The terminal portion 30c of the wireless charging antenna pattern 30b is formed in such a manner that both ends of the wireless charging pattern are connected to both ends of the wireless charging antenna pattern 30b.

The terminal portion 30c of the wireless charging antenna pattern 30b and the connection pattern 30d are formed by screen printing a conductive paste.

The conductive paste may be one selected from a silver paste, a copper paste, and a silver coated copper paste. Silver coated copper paste is a printing metal paste utilizing metal particles in the form of silver (Ag) coated on the surface of copper (Cu).

After the screen printing, the connection pattern 30d is dried using hot air or near-infrared radiation. In the case of forming the connecting pattern 30d through screen printing, the etching process is omitted and the pattern forming process is simple.

The terminal portion 30c or the connection pattern 30d of the wireless charging antenna pattern 30b is preferably plated and is plated with one of copper plating, nickel plating and gold plating.

The gold plating is for improving reliability such as contact resistance and prevention of terminal oxidation, and can be performed by various methods such as electrolytic plating, electroless plating, and sputtering.

Of these, gold plating is most suitable for electroless plating due to cost problems. The gold plating on the terminal part using the electroless plating is performed by electroless plating nickel on the terminal part first, then electroless plating the gold thereon, and plating the gold by the reduction reaction. A via hole 30e for connection with the connection pattern 30d is formed on both ends of the wireless antenna pattern 30b. The terminal portion 30c of the wireless charging antenna pattern 30b is for connecting the wireless LAN communication pattern to the wireless charging antenna pattern 30b.

When the antenna pattern 30a for short range wireless communication and the antenna pattern 30b for wireless charging are transferred to one surface of the insulating film 40, the wireless charging antenna pattern 30b covers the via hole 30e. The wireless charging antenna pattern 30b is electrically connected to the connection pattern 30d connected to the terminal portion 30c through the via hole 30e.

13 and 14, the method of manufacturing an antenna according to the present invention is characterized in that after the bending of the second terminal portion 32, the first and second terminal holes 41b and 41a of the insulation film 40, The end portions of the first and second terminal portions 34 and 32 located on the rear side of the insulating film 40 are insulated from each other between the folded first terminal portions 34 and the second terminal portions 32, Thereby allowing the film to intervene.

The step of inserting the insulating film may be performed by folding the first and second terminal portions 34 and 32 to reinforce the rigidity of the first and second terminal portions 34 and 32 so that the first and second terminal portions 34 and 32, 32 are prevented from being short-circuited and the connection between the first and second terminal portions 34, 32 is securely maintained.

The first and second terminal portions 34 and 32 may have an elliptical shape or a circular shape having a hollow at the center thereof so that the first and second terminal portions 34 and 32 are folded and overlapped with each other.

The end portions of the first and second terminal portions 34 and 32 are respectively folded to the back side of the insulating film 40. Between the first terminal portions 34 and the second terminal portions 32, A part of the insulating film 40 is interposed inward along the edge of the first terminal portion 34 and the edge of the second terminal portion 32. [

When the end portions of the first and second terminal portions 34 and 32 are respectively folded to the back side of the insulating film 40 as described above, the terminal cover sheet 60 is attached to both sides of the insulating film 40 The rigidity of the first and second terminal portions 34 and 32 is reinforced and oxidation is prevented.

10, the antenna according to the present invention is formed by tapping a metal foil laminated on a base material, and includes an antenna pattern 30 having a loop shape that is wound a plurality of times and an insulation film 40 on which the antenna pattern 30 is transferred. . The insulating film may be a PET film or a PI film, and the metal foil may be any one of an aluminum foil and a copper foil or an Ag foil. The thickness of the insulating film is preferably 25 to 40 占 퐉, and the thickness of the metal foil is preferably 10 to 35 占 퐉.

The first and second terminal portions 34 and 32 are integrally formed at both ends of the antenna pattern 30. Since the antenna pattern 30 has a plurality of loop shapes, the second terminal portion 32 is disposed on the inner side of the antenna pattern 30, and the first terminal portion 34 is disposed on the outer side. The first terminal portion 34 and the second terminal portion 32 may be spaced apart from and spaced from each other on the outside of the antenna pattern 30 for convenience in connection with the connector.

The antenna pattern 30 has the second terminal portion 32 arranged inwardly bent to the outside of the antenna pattern 30 so that the first and second terminal portions 34 and 32 are arranged side by side.

The antenna according to the present invention may further include an insulating tape 50 attached to a portion of the second terminal portion 32 which overlaps and contacts the antenna pattern 30 when the second terminal portion 32 is bent and overlapped.

The insulating tape 50 prevents the antenna pattern 30 from being connected at a portion where the second terminal portion 32 is bent and connected to the antenna pattern 30 to prevent a short circuit. It is preferable that the insulating tape 50 is attached such that one end of each of the opposite side ends is coincident with the folded part of the second connecting pattern part 33.

That is, the second terminal portion 32 is separated from the insulating film 40 and folded in the outer direction of the antenna pattern 30 to be disposed in parallel with the first terminal portion 34.

The insulating film 40 may be formed with terminal holes or first and second terminal holes 41b and 41a for exposing the first and second terminal portions 34 and 32 to the back surface of the insulating film 40 desirable. The first and second terminal holes 41b and 41a allow connection of the first and second terminal portions 34 and 32 on both surfaces of the insulating film 40. [

The antenna pattern 30 includes an antenna pattern 30a for short-range wireless communication having a loop shape and a plurality of antennas 30a for winding radio waves. The antenna pattern 30 has a plurality of loop shapes and is disposed inside a short- ).

The first terminal portion 34 and the second terminal portion 32 are disposed at opposite ends of the first terminal portion 34 and the second terminal portion 32 in a direction opposite to the first terminal portion 34 and spaced apart from each other in an extension line in the longitudinal direction.

Referring to FIG. 15, it is preferable that the antenna pattern 30 includes an extension pattern portion 36 for enlarging the width of the antenna pattern 30 in the bending portion of the second terminal portion 32.

The extension pattern portion 36 increases the connection area at the folded portion so that the antenna pattern 30 can be stably connected at the folded portion without being short-circuited.

The extended pattern portion 36 is provided at an inner corner portion of the second terminal portion 32 arranged in a bent shape on the end side of the antenna pattern 30.

The extension pattern portion 36 increases the width at a portion where the antenna pattern 30 and the second terminal portion 32 are connected and the second terminal portion 32 is connected to the antenna pattern 30 Respectively.

16 and 17, the antenna pattern 30 includes a second terminal portion 32 disposed on the inner side and a first terminal portion 34 disposed on the outer side. Inside the antenna pattern 30, The second terminal portion 32 is disposed in a bent shape so as to face the first terminal portion 34 in the opposite direction. The second terminal portion 32 is folded in the middle of the folded portion to the one end portion, overlapped from the folded portion to the folded portion, and the one end portion is disposed on the straight line with the other end portion. That is, the folded portion of the second terminal portion 32 protrudes from the inside of the antenna pattern 30 to the outside of the insulating tape 50 and overlaps with each other. This is because the second terminal portion 32 formed on the inner side of the antenna pattern 30 is arranged on the side of the terminal portion 34 formed on the outer side of the antenna pattern 30, When a part of the side is folded, a short circuit may occur in the folded part. Since the second terminal portion 32 of the present invention overlaps from the folded portion to the folded portion, the antenna pattern 30 and the second terminal portion 32 are stably connected even if a short-circuit occurs in the folded portion, Stable and long-term use is possible.

The bendable second terminal portions 32 are preferably folded and arranged next to and adjacent to the first terminal portions 34 formed at the other end portion. The ends thereof must be exactly aligned with the first and second terminal holes 41b and 41a, respectively, so that the folded position must be accurate.

The second terminal portion 32 may be formed with a folding guide groove 36a for guiding a bending portion of the second terminal portion 32. [ The folding guide groove 36a positions the end portion of the second terminal portion 32 at an accurate position when the second terminal portion 32 is bent. It is also preferable that the extension pattern portion 36 is provided to prevent a short circuit at the folded portion. The width of the antenna pattern 30 is narrowed at the portion where the folding guide groove 36a is formed so that the extended pattern portion 36 is formed at the folded portion of the second terminal portion 32, And a folding guide groove 36a for guiding the folded portion of the second terminal portion 32 is formed on the second terminal portion 32. [

The folded portions of the second terminal portion 32 are folded so as to overlap with each other to increase the contact area at the folded portion. For example, the second terminal portion 32 is bent downward, and the intermediate portion thereof is folded toward the upper side, and an end portion thereof protrudes to the outside of the antenna pattern 30. The second terminal portion 32 is arranged in parallel with the first terminal portion 31 by being straightly folded to the upper side.

The folding guide grooves 36a may be provided on both sides of the extended pattern portion 36 or may be provided on one side.

The folding guide groove 36a is formed in a notch shape.

The folding guide groove 36a guides a position where the second terminal portion 32 is folded and can be arranged in parallel with the first terminal portion 34. [

More specifically, the folding guide groove 36a guides the folded position of the second terminal portion 32, and the second terminal portion 32 is folded and arranged so as to be spaced apart from the first terminal portion 34, The end portions of the first and second terminal portions 32 can be aligned with the first terminal hole 41b and the second terminal hole 41a, respectively.

The end portions of the first and second terminal portions 34 and 32 are formed in a line symmetrical structure and the ends of the line symmetric structure are connected to the first and second terminal holes 41b and 41a with the insulating film 40 therebetween And bent to the back surface of the insulating film 40.

Referring to FIG. 18, the antenna according to the present invention further includes a terminal cover sheet 60 having terminal exposing holes 61 for exposing the ends of the first and second terminal portions 34 and 32. The terminal cover sheet 60 is attached to the insulating film 40 to reinforce strength and prevent oxidation of the first and second terminal portions 34 and 32. The terminal cover sheet 60 can be easily attached in the form of a tape having an adhesive on at least one surface thereof. The terminal exposing holes 61 are formed to correspond to the first and second terminal holes 41b and 41a. The terminal cover sheet 60 is attached to the terminal exposing hole 61 so that the first and second terminal portions 34 and 32 are exposed. The terminal exposing hole 61 is formed such that the terminal cover sheet 60 is partially overlapped with the ends of the first and second terminal portions 34 and 32 along the rim of the first and second terminal portions 34 and 32 .

It is preferable that the terminal exposing hole 61 is provided with a connecting portion 62 for connecting the terminal cover sheet 30 across the terminal exposing hole 51, respectively. Both ends of the connecting portion 62 are connected to the terminal cover sheet 60 across the terminal exposing hole 61. The connection portion 62 may be integrally formed with the terminal cover sheet 60 and may be separately attached to the terminal cover sheet 60 at both ends thereof.

The terminal cover sheet 60 covers a part of the antenna pattern 30 connected to the first and second terminal portions 34 and 32 as well as the first and second terminal portions 34 and 32, Thereby preventing a short circuit at the connection portion of the terminal portions 32 and 34. [

That is, the terminal cover sheet 60 is formed with two terminal exposing holes 61 for exposing the first terminal portion 34 and the second terminal portion 32, and the first connection pattern portion 35 And covers the second connection pattern portion 33.

The terminal cover sheet 60 is attached to both sides of the insulating film 40 when the first and second terminal portions 34 and 32 are folded back to the back side of the insulating film 40, 32 of the first and second terminal portions 34, 32 exposed on both sides of the first and second terminal portions 34, 32 are prevented from being short-circuited by soldering or the like.

9, a portion of the first and second terminal portions 34 and 32 is covered with the terminal cover sheet 60 along the outer edge, and in order to smoothly connect the terminal cover sheet 60, Exposed through the exposure hole 61 or the first and second terminal holes 41b and 41a.

In addition, when the insulating sheet is punched out in the antenna shape, between the first and second terminal portions 34 and 32, the first and second terminal portions 41b and 41a, which are located in the first and second terminal holes 41b and 41a, Grooves 60a for preventing short-circuiting between the first and second electrodes 34 and 32 are formed. The groove 60a has a U-shape.

The portion covered by the terminal cover sheet 60 is only a part along the outer edge of the first and second terminal portions 34 and 32 as seen from the thickness t , The first and second terminal portions 34 and 32 may be damaged as the terminal exposing hole 61 is opened. The connection portion 62 prevents the terminal exposing hole 61 from being opened so that a part of the terminal exposing hole 61 is covered with the terminal cover sheet 60 along the outer rim of the first and second terminal portions 34 and 32 .

The present invention attaches the antenna pattern (30) on which the metal foil (20) is formed to the insulating film (40) through transfer, thereby simplifying the manufacturing process and providing excellent product operation reliability as well as greatly reducing manufacturing cost.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: substrate 20: metal foil
30: antenna pattern 40: insulating film
50: Insulation tape 60: Terminal cover sheet

Claims (35)

Forming a loop-shaped antenna pattern by tapping a metal foil laminated on the base material; And
And transferring the patterned antenna pattern to an insulating film. The method according to claim 1,
Wherein the base material is a PET film, and the insulating film is a PET film or a PI film. The method according to claim 1,
Wherein the metal foil is any one of an aluminum foil and a copper foil silver foil. The method according to claim 1,
Wherein the thickness of the substrate is 60 to 90 占 퐉, the thickness of the insulating film is 25 to 40 占 퐉, and the thickness of the metal foil is 10 to 35 占 퐉. 5. An antenna, manufactured according to the method of any one of claims 1 to 4. a) forming an antenna pattern having first and second terminal portions by tapping a metal foil laminated on the base material;
b) preparing an insulating film having neighboring first and second terminal holes;
c) aligning the first terminal hole of the insulating film and the first terminal portion of the antenna pattern to transfer the antenna pattern to the insulating film; And
and d) folding the second terminal portion of the antenna pattern transferred to the insulating film toward the first terminal portion so as not to be short-circuited with the antenna pattern and aligning the second terminal portion with the second terminal hole of the insulating film. Way. The method according to claim 6,
Wherein the base material is a PET film, and the insulating film is a PET film or a PI film. The method according to claim 6,
Wherein the metal foil is any one of an aluminum foil and a copper foil silver foil. The method according to claim 6,
Wherein the thickness of the substrate is 60 to 90 占 퐉, the thickness of the insulating film is 25 to 40 占 퐉, and the thickness of the metal foil is 10 to 35 占 퐉. [7] The method of claim 6, wherein in the step a)
Wherein the first terminal portion of the antenna pattern is located outside the antenna pattern and the second terminal portion is located inside the antenna pattern. 7. The method of claim 6, wherein step c)
And removing a part (scrap) excluding the antenna pattern from the substrate while pressing a part or the whole of the antenna pattern using a jig. 7. The method of claim 6, wherein step c)
And separating the antenna pattern from the substrate by vacuum adsorption using a mold having a vacuum adsorption pattern corresponding to the shape of the antenna pattern. 7. The method of claim 6, wherein step c)
Placing the base material and the insulating film on top of each other and heating and pressing only the portion of the base material where the antenna pattern is formed; And
And separating the substrate from the insulating film to remove a portion (scrap) excluding the antenna pattern from the metal foil. 7. The method of claim 6, wherein step d)
Attaching an insulating tape to an antenna pattern portion on which the second terminal portion overlaps;
Folding a second terminal portion of the antenna pattern to an upper surface of the insulating tape; And
And attaching a terminal cover sheet for reinforcement of strength and prevention of oxidation of the first and second terminal portions. The method according to claim 6,
The step of folding the end portions of the first and second terminal portions of the antenna pattern located in the first and second terminal holes of the insulating film to the back surface of the insulating film so that the insulating film is interposed between the end portions of the folded terminal portions / RTI > Bonding a copper foil to the PET film;
Forming a loop-shaped antenna pattern having a first terminal portion on an outer side and a second terminal portion on an inner side by tapping the copper foil;
Removing scraps of the copper foil except for the antenna pattern;
Preparing an insulating film having neighboring first and second terminal holes;
Aligning the first terminal hole of the insulating film and the end of the first terminal portion so as to transfer the antenna pattern to the insulating film;
Attaching an insulating tape for preventing short-circuit to an antenna pattern portion where the second terminal portion overlaps when the second terminal portion is bent;
Bending a second terminal portion of the antenna pattern to an upper surface of the insulating tape so that an end of the second terminal portion coincides with the second terminal hole;
Attaching a terminal cover sheet for reinforcing and preventing oxidation of the bent second terminal portion and the first terminal portion to an insulating film;
Completely bonding the antenna pattern to the insulating film using a hot press process;
TIN plating the end portions of the first and second terminal portions; And
The method of claim 1, further comprising the steps of: 17. The method of claim 16,
The end portions of the first and second terminal portions of the antenna pattern positioned in the first and second terminal holes of the insulating film are folded by the back surface of the insulating film to bend the second terminal portion, The method further comprising the step of: 18. The method of claim 17,
Wherein the step of tapping the insulating film is performed so that a groove is formed between the end portions of the first and second terminal portions of the insulating film to prevent a short circuit between the terminals. 19. An antenna, manufactured according to the method of any one of claims 6 to 18. A loop-shaped antenna pattern formed by punching a metal foil laminated on a base material, the loop pattern being wound a plurality of times; And
And an insulating film on which the antenna pattern is transferred. 21. The method of claim 20,
Wherein the insulating film is a PET film or a PI film. 21. The method of claim 20,
Wherein the metal foil is any one of an aluminum foil and a copper foil silver foil. 21. The method of claim 20,
Wherein the insulating film has a thickness of 25 to 40 占 퐉 and the metal foil has a thickness of 10 to 35 占 퐉. 21. The method of claim 20,
The antenna pattern includes a first terminal portion and a second terminal portion. The second terminal portion disposed inside the antenna pattern is bent to the outside of the antenna pattern under the interposition of the insulating tape so that the first terminal portion and the second terminal portion are arranged side by side Wherein the antenna is disposed on the antenna. 25. The method of claim 24,
And a bending guide groove for guiding bending is formed in the second terminal portion. 25. The method of claim 24,
Wherein the bending portion of the second terminal portion is provided with an extension pattern portion that enlarges the width of the terminal portion. 27. The method of claim 26,
And a bending guide groove for guiding bending of the second terminal portion is formed in the extension pattern portion. 25. The method of claim 24,
The terminal cover sheet may further include a terminal exposing hole for exposing the end portions of the first and second terminal portions, Wherein the first antenna and the second antenna are connected to each other. 29. The method of claim 28,
Wherein the terminal exposing hole is formed such that the terminal cover sheet overlaps with an end portion of the terminal portion along an edge of the terminal portion. 29. The method of claim 28,
Wherein the terminal exposing hole is provided with a connecting portion that crosses the terminal exposing hole. 25. The method of claim 24,
Wherein the insulating film has first and second terminal holes for exposing the end portions of the first and second terminal portions to the back surface of the insulating film. 32. The method of claim 31,
Wherein the first and second terminal holes are formed with connecting portions that cross the terminal holes, respectively. 32. The method of claim 31,
Wherein ends of the first and second terminal portions are formed in a line symmetrical structure and ends of the line symmetric structure are bent to the back surface of the insulating film with the insulating film sandwiched between the first and second terminal holes. 32. The method of claim 31,
Wherein a groove is formed between the first and second terminal holes in the insulating film to prevent a short circuit between terminal portions positioned in the first and second terminal holes. 35. The method according to any one of claims 20 to 34,
Wherein the antenna pattern is an antenna pattern for short-range wireless communication; And
And an antenna pattern for wireless charging arranged inside the antenna pattern for short-range wireless communication.

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