KR20100072790A - Manufacturing method for loop antenna portable phone - Google Patents

Manufacturing method for loop antenna portable phone Download PDF

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Publication number
KR20100072790A
KR20100072790A KR1020080131300A KR20080131300A KR20100072790A KR 20100072790 A KR20100072790 A KR 20100072790A KR 1020080131300 A KR1020080131300 A KR 1020080131300A KR 20080131300 A KR20080131300 A KR 20080131300A KR 20100072790 A KR20100072790 A KR 20100072790A
Authority
KR
South Korea
Prior art keywords
pattern
terminal
terminals
closed ring
annular loop
Prior art date
Application number
KR1020080131300A
Other languages
Korean (ko)
Inventor
송민규
Original Assignee
송민규
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 송민규 filed Critical 송민규
Priority to KR1020080131300A priority Critical patent/KR20100072790A/en
Publication of KR20100072790A publication Critical patent/KR20100072790A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/04—Screened antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna

Abstract

The present invention relates to a method for manufacturing a loop antenna for a mobile phone, and in particular, (a) an annular loop pattern and a closed ring of the annular loop pattern through an exposure and corrosion process for forming a pattern on a substrate on which a single-side single-layer copper foil is laminated. Forming an antenna unit including a first terminal extended outwardly, and second and third terminals respectively formed in a short circuit state outside the closed ring of the annular loop pattern and inside the closed ring of the annular loop pattern; (b) printing an insulating polyimide ink on the antenna unit except for the electrical connection contacts of the second and third terminals; (c) printing a conductive conductive ink so that the second and third terminals can be electrically connected; And (d) performing a surface plating process on the substrate on which the conductive ink is printed.

The present invention solves the inevitable short wiring problem in the design of the loop antenna, and shortens the drilling process for forming the via hole in the manufacture of the existing loop antenna, and the copper plating process for the via hole.

In addition, the present invention can simplify the process through the polyimide ink printing and conductive ink printing process to reduce the mass production and manufacturing cost through a simplified process with a shortening of the existing process, thereby increasing the productivity effect To provide.

Description

Manufacturing method for loop antenna portable phone}

The present invention relates to a method for manufacturing a loop antenna for a mobile phone, and more particularly, to solve the inevitable cross wiring problem caused by the design space loop antenna design by using polyimide ink printing and conductive ink printing process. A method of manufacturing a loop antenna for a mobile phone that makes it possible to design a loop antenna on a substrate on which a layer copper foil is laminated.

Conventional mobile phone loop antenna, the antenna unit is designed by etching the copper foil laminated on the thin film substrate, the annular loop pattern and the first terminal is formed on one surface of the thin film substrate, the second terminal on the other surface of the thin film substrate On the other hand, a structure in which one end of the annular loop pattern and one end of the second terminal are electrically connected by drilling a via hole in the thin film substrate and plating copper in the via hole is common.

In the conventional method of manufacturing a loop antenna for a mobile phone as described above, a via hole is drilled at a position corresponding to a connection point of an annular loop pattern and a second terminal on a thin film substrate of a double-sided two-layer copper foil having copper foils laminated on the front and back surfaces thereof. To carry out a drilling process.

Next, copper plating is applied to the via holes to electrically connect the disconnected loop and the second terminal, respectively located on the front and rear surfaces of the thin film substrate, and then to the copper foils on the front and rear surfaces of the thin film substrate so as to match the pattern shape of the entire antenna part. Perform exposure and corrosion processes.

As a result, an annular loop pattern and a first terminal are formed on the surface of the thin film substrate, and a second terminal is formed on the rear surface of the thin film substrate.

Next, a polyimide film is welded to the front and rear surfaces of the thin film substrate on which the antenna unit is formed, and a cover layer is formed through a thermal bonding press process, and then a loop antenna is manufactured by performing a surface plating process of the thin film substrate. do.

As described above, the reason why the use of a thin film substrate laminated with double-sided two-layer copper foil in the manufacture of a conventional loop antenna for a mobile phone is that the inside of the annular loop pattern is used when the substrate where the copper foil is laminated only on one surface of the thin film substrate. This is to avoid this because when the second terminal is drawn outward from the second terminal, a short may be generated by crossing the annular loop pattern and the second terminal.

That is, the conventional loop antenna for a mobile phone must use a double-sided copper foil substrate in order to avoid shorts occurring in inevitable cross wiring in designing an antenna of a loop pattern, as well as forming a via hole and performing a copper plating process on the via hole. There was a problem that involves a number of processes.

In addition, the conventional loop antenna for a mobile phone can be a limitation in mass production due to the complicated and many steps of the production process, which leads to a decrease in productivity and an increase in manufacturing cost due to mass production, and eventually a product This can cause problems that result in loss of competitiveness.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to solve the short problem of inevitable cross wiring occurring in the design of a loop antenna applied to a limited design space. The present invention provides a method for manufacturing a loop antenna for a mobile phone of a new method that enables the design of a single-side single layer copper foil on a laminated substrate through a printing process.

Another object of the present invention is to provide a method of manufacturing a loop antenna for a mobile phone which can shorten the existing process of using a double-sided two-layer copper foil substrate, forming a via hole, and performing a copper plating process on the via hole.

In addition, another object of the present invention is to provide a method for manufacturing a loop antenna for a mobile phone that can reduce the production cost along with the mass production and thereby increasing the productivity through the reduction of complex and many production processes.

The present invention for achieving the above object, (a) through the exposure and corrosion process for forming a pattern on the base material on which the single-layer single-layer copper foil is laminated, the annular loop pattern and the outside of the closed ring of the annular loop pattern Forming an antenna unit including an extended first terminal and second and third terminals respectively formed in a short circuit state outside the closed ring of the annular loop pattern and inside the closed ring of the annular loop pattern; (b) printing an insulating polyimide ink on the antenna unit except for the electrical connection contacts of the second and third terminals; (c) printing conductive ink such that the second and third terminals can be electrically connected; And (d) performing a surface plating process on the substrate on which the conductive ink is printed.

Preferably, the conductive ink is formed in a two-layer circuit structure in which a connection line between the second terminal and the third terminal and the connection line is formed continuously over the polyimide ink.

In addition, the present invention (a) an annular loop pattern, and a first terminal extended outside the closed ring of the annular loop pattern through an exposure and corrosion process for forming a pattern on a substrate on which a single-side single-layer copper foil is laminated; Forming an antenna unit including second and third terminals respectively formed in a short circuit state outside the closed ring of the annular loop pattern and inside the closed ring of the annular loop pattern;

(b) printing an insulating polyimide ink on the antenna unit except for the electrical connection contacts of the second and third terminals;

(c) attaching a conductive tape or applying a thermosetting EMI and thermocompressing such that the second and third terminals are electrically connected; And

(d) performing a surface plating process on the conductive tape or the thermosetting EMI-heat-compressed substrate; and discloses a method of manufacturing a loop antenna for a mobile phone.

As described above, according to the method of manufacturing a loop antenna for a mobile phone according to the present invention, an inevitable cross wiring problem occurring in the design of a loop antenna applied to a limited design space is obtained through a polyimide ink printing process and a conductive ink printing process. There is an effect of making it possible to design on a substrate on which copper foil is laminated.

In addition, the present invention can shorten the drilling process for forming the via hole, the copper plating process for the via hole, etc. in the manufacture of a loop antenna for a mobile phone using a conventional double-sided two-layer copper foil substrate, polyimide ink printing By simplifying the process through the printing process and the conductive ink printing process, it is possible to shorten the existing process and reduce the mass production and manufacturing cost through the simplified process, thereby increasing the productivity.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the present invention, the defined terms are defined in consideration of the functions of the present invention, and they can be changed according to the intention or custom of the technician working in the field, and the definition is based on the contents throughout this specification It should be reduced.

1 is a flow chart illustrating a method for manufacturing a loop antenna for a mobile phone according to an embodiment of the present invention, Figure 2 is a process state diagram of a loop antenna manufacturing method for a mobile phone according to the present invention, Figure 3 is a mobile phone according to the present invention It is a schematic sectional drawing of the loop antenna for.

As shown in the drawing, the method for manufacturing a loop antenna for a mobile phone according to the present invention cuts the substrate to a suitable size, and laminates a single-sided copper foil thereon. Subsequently, the antenna unit 200 having a continuous loop pattern is formed singularly or plurally without disconnection through an exposure and corrosion process for pattern formation on the base material 100 having the single-layer single layer copper foil laminated in this way.

Here, as shown in FIG. 2A, the antenna unit 200 includes an annular loop pattern 201 and a first terminal 202 extending out of a closed ring of the annular loop pattern 201. ) And second and third terminals 203 and 204 respectively formed in a short circuited state outside the closed ring of the annular loop pattern 201 and inside the closed ring of the annular loop pattern 201.

Next, when the pattern formation of the antenna unit 200 is completed on the first-layer copper foil of the base material 100, the antenna unit 200 except for the electrical connection contacts of the second and third terminals 203 and 204 may be formed. Print an insulating polyimide ink.

The printing of the polyimide ink is applied to the portions except the electrical connection contacts of the second and third terminals 203 and 204, as shown in FIG. In this case, it is preferable that the electrode portions of the ends of the first terminal 202 and the second terminal 203 are not coated.

Here, the method of excluding the coated part may be performed by masking the electrical connection contact point, printing a polyimide ink, or printing the whole part and punching the corresponding part.

Next, after the printing process of the polyimide (PI) ink, the conductive ink is printed as shown in FIG. 2C so that the second and third terminals 203 and 204 can be electrically connected.

The conductive ink is preferably a silver paste, but other conductive inks may be used.

Accordingly, the conductive ink, as shown in Figure 3, the electrical connection contact of the second terminal 203 and the third terminal 204 and the connection line 205 to the top of the polyimide (PI) ink ) Is formed in a two-layer circuit structure that is formed continuously.

Meanwhile, the printing process of the conductive ink is a process for electrically connecting the second and third terminals 203 and 204 according to a designer's need, and may be replaced with one of a conductive tape or a thermosetting EMI process.

In the case of using a conductive tape, the conductive tape is temporarily attached to the tape attaching part, and then thermally coated with a thermal coating adhesive to be fused to the tape attaching part. Through this fusion process, the tape component of the conductive tape is applied to the second and third terminals ( It penetrates the electrical connection contacts of 203 and 204 so that the terminals can be electrically connected.

In addition, when thermosetting EMI is used, thermal compression is performed through a general hot press process. Similarly, the EMI component penetrates into the electrical connection contacts of the second and third terminals 203 and 204 so that the terminals are electrically connected. To help.

Next, a surface plating process is performed on the substrate 100 on which the process of the conductive ink is completed, thus completing the manufacturing process of the loop antenna.

Here, the surface plating process is a process of selectively plating on the second and third terminals 203 and 204, which are exposed copper foil portions of the circuit, to enable stable soldering when the component is mounted, and is mainly gold plating. (Electroless / electrolytic), tin plating (electroless / electrolytic), or flux.

As described above, the method of manufacturing a loop antenna for a mobile phone according to the present invention includes several additional processes in the actual manufacturing process, but focuses on the processes prepared for the characteristics of the loop antenna according to the present invention. Processes are omitted and described.

After the surface plating process, the double-sided tape is attached, the outer shape of the mold is processed, and the shipment is made through final performance inspection.

2 (d) shows the final state of the loop antenna manufactured through the loop antenna manufacturing process for a mobile phone according to the present invention, Figure 3 shows a cross section of a loop antenna for a mobile phone manufactured according to the present invention.

The loop antenna manufactured according to the present invention as described above, although the copper foil forming the antenna unit 200 is applied only to the first floor of the cross section, the short of the unavoidable cross wiring appearing in the design of the loop antenna applied to the limited design space The design is made in such a way that the problem can be solved.

In addition, the present invention can be designed on a substrate laminated with a single-side single layer copper foil through a polyimide ink printing process and a conductive ink printing process, and thus, a loop antenna for a mobile phone using a conventional double-sided two layer copper foil substrate. It is possible to shorten a drilling process for forming a via hole inevitably generated in manufacturing, a process for performing copper plating on the via hole, and the like.

Although the present invention has been described in more detail with reference to the embodiments, the present invention is not necessarily limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a flowchart illustrating a method of manufacturing a loop antenna for a mobile phone according to an embodiment of the present invention;

2 is a process state diagram of a loop antenna manufacturing method for a mobile phone according to the present invention;

3 is a schematic cross-sectional view of a loop antenna for a mobile phone according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: substrate 200: antenna unit

201: loop pattern 202: first terminal

203: second terminal 204: third terminal

205: connection line

Claims (3)

(a) an annular loop pattern, a first terminal extended out of a closed ring of the annular loop pattern, and an annular loop pattern through an exposure and corrosion process for forming a pattern on a substrate on which a single-side single layer copper foil is laminated; Forming an antenna unit including a second terminal and a third terminal formed in a short-circuit state outside the closed ring of the inner ring and the closed ring of the annular loop pattern; (b) printing an insulating polyimide ink on the antenna unit except for the electrical connection contacts of the second and third terminals; (c) printing a conductive conductive ink so that the second and third terminals can be electrically connected; And (d) performing a surface plating process on the substrate on which the conductive ink is printed; Loop antenna manufacturing method for a mobile phone comprising a. The method of claim 1, The conductive ink, And a two-layer circuit structure in which the electrical connection contact points of the second terminal and the third terminal and the connection line are continuously formed on the polyimide ink. (a) an annular loop pattern, a first terminal extended out of a closed ring of the annular loop pattern, and an annular loop pattern through an exposure and corrosion process for forming a pattern on a substrate on which a single-side single layer copper foil is laminated; Forming an antenna unit including a second terminal and a third terminal formed in a short-circuit state outside the closed ring of the inner ring and the closed ring of the annular loop pattern; (b) printing an insulating polyimide ink on the antenna unit except for the electrical connection contacts of the second and third terminals; (c) attaching a conductive tape or applying a thermosetting EMI and thermocompressing such that the second and third terminals are electrically connected; And (d) performing a surface plating process on the conductive tape or the thermosetting EMI substrate; Loop antenna manufacturing method for a mobile phone comprising a.
KR1020080131300A 2008-12-22 2008-12-22 Manufacturing method for loop antenna portable phone KR20100072790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080131300A KR20100072790A (en) 2008-12-22 2008-12-22 Manufacturing method for loop antenna portable phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080131300A KR20100072790A (en) 2008-12-22 2008-12-22 Manufacturing method for loop antenna portable phone

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101469764B1 (en) * 2013-04-09 2014-12-08 주식회사 아모그린텍 Antenna and method for manufacturing thereof
WO2023211008A1 (en) * 2022-04-29 2023-11-02 주식회사 아모텍 Antenna pattern manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101469764B1 (en) * 2013-04-09 2014-12-08 주식회사 아모그린텍 Antenna and method for manufacturing thereof
WO2023211008A1 (en) * 2022-04-29 2023-11-02 주식회사 아모텍 Antenna pattern manufacturing method

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