KR101518777B1 - Loop antenna printed by electric conductive ink and manufacturing method thereof - Google Patents
Loop antenna printed by electric conductive ink and manufacturing method thereof Download PDFInfo
- Publication number
- KR101518777B1 KR101518777B1 KR1020140013785A KR20140013785A KR101518777B1 KR 101518777 B1 KR101518777 B1 KR 101518777B1 KR 1020140013785 A KR1020140013785 A KR 1020140013785A KR 20140013785 A KR20140013785 A KR 20140013785A KR 101518777 B1 KR101518777 B1 KR 101518777B1
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- KR
- South Korea
- Prior art keywords
- loop circuit
- conductive ink
- loop
- terminals
- terminal
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07777—Antenna details the antenna being of the inductive type
- G06K19/07779—Antenna details the antenna being of the inductive type the inductive antenna being a coil
- G06K19/07783—Antenna details the antenna being of the inductive type the inductive antenna being a coil the coil being planar
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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
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
- H05K3/1291—Firing or sintering at relative high temperatures for patterns on inorganic boards, e.g. co-firing of circuits on green ceramic sheets
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Details Of Aerials (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
The present invention relates to a loop antenna printed with a conductive ink and a method of manufacturing the same. More particularly, the present invention relates to a loop antenna used in an RFID system, which is printed with conductive ink on one side of a base film, The present invention relates to a loop antenna printed with a conductive ink and a method of manufacturing the same.
Generally, a loop antenna is a receiving antenna and includes a wire wound in a loop shape. Such a loop antenna has an eight-character sensitive receiving area parallel to the surface of the loop.
Recently, development of M-commerce (mobile commerce) for mobile commerce using mobile terminals has been focused on, and development of RFID antennas, RFID readers, RFID tags, It is also attracting attention.
RFID (Radio Frequency Identification) is a wireless recognition device developed as a data input device as one of automatic recognition technologies. RFID can read, manage, and track animals, objects, people, etc. tagged with a reader and an antenna by storing the ID of the object to be recognized in a tag. This RFID technology has the advantage of simultaneously reading, modifying and updating several information, so it can solve the various problems that barcode technology does not overcome or actively cope with it, so that explosive demand will increase in future in logistics and security fields do.
This RFID antenna is implemented as a loop antenna. The near field communication (NFC) loop antenna for electronic payment is an antenna of 13.56 MHz band and is distinguished from a voice communication or a DMB (Digital Multimedia Broadcasting) antenna.
The mobile terminal for M-commerce is equipped with an RFID reader capable of reading the information recorded in the RFID tag. When an RFID tag (passive tag) storing a unique ID and data enters the magnetic field while radiating a radio wave from the antenna of the RFID reader, the RFID tag is activated and transmits its own ID and Data to the RFID reader . The RFID reader processes the transmitted ID and data to provide necessary services.
[0007] In a mobile phone equipped with an RFID reader, an electronic chip for processing ID and Data transmitted from an RFID tag is installed in the main body, and the antenna is detachably mounted on the main body Respectively. The antenna can be made in various sizes and shapes, and the resistance value and the inductance value are determined according to the thickness of the copper wire, the number of turns, and the diameter of the antenna.
1 shows a general structure of a loop antenna used for RFID. 1, the
Conventionally, a method of etching a copper foil laminated on a thin film substrate or forming a loop pattern by ultrasonic welding is used in order to reduce the volume occupied by an antenna in mounting a loop antenna to a mobile terminal.
A conventional method of etching a double-sided copper foil board to form a loop antenna is performed as follows. The
According to the conventional method of manufacturing the loop antenna by the copper foil etching, the
In order to form the
In addition, since a part of the double-sided copper foil pattern is removed and discarded by etching, the utilization efficiency of the material is low and the base film is limited to an ultra-high-priced polyimide film (PI film).
Meanwhile, a conventional method of manufacturing a loop antenna using ultrasonic welding is as follows. Flexible materials such as plastic films (PVC), polyester films (PET), and ABS (Acrylonitrile Butadiene Styrene) films have properties in which plastic deformation starts at 80 DEG C or below by ultrasonic vibration.
A loop pattern is formed by using an insulated copper wire on the soft material and the copper wire patterned by ultrasonic welding is fused to the soft material.
The loop antenna manufacturing method using ultrasonic welding is environmentally safe compared with the method using copper foil etching, but it is difficult to freely design circuit elements because it is not suitable for mass production and uses standardized copper wire because the loop pattern must be patterned one by one. . For example, it is very difficult to design any part of the loop pattern to have a different width than the other parts.
To solve these problems, Korean Patent No. 10-1301199 is proposed.
The prior art discloses a
However, in the prior patent, it is necessary to manufacture a pre-plated frame in which a
Further, there is a problem that the surface resistance value is high and the antenna performance is deteriorated.
Accordingly, it is an object of the present invention to solve the above problems, and it is an object of the present invention to provide a method of manufacturing a loop antenna in which a plating frame is not required, And it is an object of the present invention to provide a loop antenna printed with a conductive ink having a simple production process, easy shape change of the loop circuit, and low surface resistance, thereby improving antenna performance, and a manufacturing method thereof.
The loop antenna printed with the conductive ink according to the present invention comprises a glass plate or a ceramic plate; A loop circuit formed of a conductive ink which is a conductive paste containing silver (Ag) on one side of the glass plate or ceramic plate; A first terminal formed of a conductive ink which is a conductive paste containing silver (Ag) on one side of the glass plate or the ceramic plate and connected to the loop circuit; And a second terminal formed of a conductive ink which is a conductive paste containing silver (Ag) on one side of the glass plate or the ceramic plate and separated from the loop circuit; The
In addition, a method of manufacturing a loop antenna printed with a conductive ink according to the present invention includes the steps of preparing a glass plate or a ceramic plate; Pattern printing the first and second terminals and the loop circuit with a conductive ink, which is a conductive paste containing silver (Ag), on one side of the glass plate or the ceramic plate; Firing the pattern printed first and second terminals and the loop circuit; Peeling the first and second fired terminals from the glass plate or the ceramic plate by covering the loop circuit with a transparent adhesive film having adhesion property; Attaching the peeled first and second terminals and the transparent adhesive film to which the loop circuit is attached to the ferrite sheet so that the peeled first and second terminals and the loop circuit are attached to the ferrite sheet; Forming an insulating film on the loop circuit to connect the inner end of the loop circuit to the second terminal; And connecting a connection circuit of a flexible printed circuit board (FPCB) between an inner end of the loop circuit and the second terminal.
As described above, the loop antenna printed with the conductive ink according to the present invention and its manufacturing method do not require a plating frame manufacturing process, and do not use any hazardous materials during the etching process and the etching process during the mass production process, There is an advantage to be able to.
In addition, by baking the loop circuit formed of the conductive ink and the first and second terminals, the conductive ink is densified and densified, so that there is an advantage that it is not broken in bending.
Further, by baking the loop circuit formed of the conductive ink and the first and second terminals, there is an advantage that the surface resistance value is lowered and the antenna performance is improved.
Further, the thickness of the loop antenna can be reduced, and the manufacturing method thereof is also simple and the manufacturing cost is reduced.
1 and 2 are general structural diagrams of a loop antenna used for a conventional RFID.
Figs. 3A to 3E are diagrams showing a manufacturing process of a loop antenna printed with a conductive ink according to the present invention. Fig.
4 is a flowchart showing a manufacturing process of a loop antenna printed with a conductive ink according to the present invention.
5 is a schematic view of a loop circuit portion of a loop antenna printed with a conductive ink according to the present invention.
6 is a schematic view of an FPCB terminal portion of a loop antenna printed with a conductive ink according to the present invention.
Hereinafter, a loop antenna printed with the conductive ink according to the present invention and a method of manufacturing the same will be described in detail with reference to the 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. The following terms are defined in consideration of the functions of the present invention, and they may vary depending on the intentions or customs of the client, the operator, the user, and the like. Therefore, the definition should be based on the contents throughout this specification.
Like numbers refer to like elements throughout the drawings.
4 is a flowchart illustrating a manufacturing process of a loop antenna printed with a conductive ink according to an embodiment of the present invention, FIG. 5 is a flowchart illustrating a manufacturing process of a loop antenna according to the present invention FIG. 6 is a schematic view of an FPCB terminal portion of a loop antenna printed with a conductive ink according to the present invention. FIG. 6 is a schematic view of a loop circuit portion of a loop antenna printed with conductive ink according to the present invention.
3A to 3E, the manufacturing process of the loop antenna printed with the conductive ink according to the present invention is such that first and
Thereafter, the
Thereafter, a transparent
Thereafter, the transparent
Thereafter, on the
A connecting
The
Now, the flow of the manufacturing process of the loop antenna printed with the conductive ink according to the present invention will be described with reference to FIG.
First, a glass plate or a
Then, the first and
Thereafter, the pattern printed first and
Thereafter, a transparent
Thereafter, the transparent
Thereafter, on the
Thereafter, the
In step S430, the
Now, a loop circuit portion of a loop antenna printed with the conductive ink according to the present invention will be described with reference to FIG.
The loop circuit portion of the loop antenna printed with the conductive ink according to the present invention comprises a glass plate or a
The
The FPCB terminal portion of the loop antenna printed with the conductive ink according to the present invention will now be described with reference to FIG.
The FPCB terminal portion of the loop antenna printed with the conductive ink according to the present invention is a
The
The
As described above, the loop antenna printed with the conductive ink according to the present invention and the manufacturing method thereof do not require a plating frame manufacturing process and do not use any hazardous materials during the etching process and the etching process during the mass production process. . Further, when the conductive ink is fired, the conductive ink is concentrated and densified, so that the conductive ink is not broken in bending. Further, by firing the conductive ink, the surface resistance value is lowered, and the antenna performance is improved. Further, the thickness of the loop antenna can be reduced, and the manufacturing method thereof is also simple and the manufacturing cost is low.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.
30: glass plate or ceramic plate 31: first terminal
32: second terminal 33: loop circuit
34: Inner end 35: transparent adhesive film
36: insulating film 37: connection circuit
Claims (6)
A loop circuit 33 formed of a conductive ink, which is a conductive paste containing silver (Ag), on one side of the glass plate or the ceramic plate 30;
A first terminal 31 formed of conductive ink which is a conductive paste containing silver (Ag) on one side of the glass plate or the ceramic plate 30 and connected to the loop circuit 33;
And a second terminal (32) formed of a conductive ink, which is a conductive paste containing silver (Ag), on one side of the glass plate or the ceramic plate (30) and separated from the loop circuit (33);
The loop circuit 33 and the first and second terminals 31 and 32 formed of the conductive ink are fired at a temperature of 100 to 700 ° C. for 8 to 11 minutes in a firing furnace, Heated at 500 to 700 ° C for 4 to 5 minutes in the second heat treatment section, cooled to 500 to 100 ° C in the third heat treatment section, and then cooled naturally at room temperature. antenna.
Wherein the loop circuit (33) and the second terminal (32) are connected by a connection circuit (37) of a flexible printed circuit board (FPCB).
A step S420 of pattern printing the first and second terminals 31 and 32 and the loop circuit 33 with a conductive ink which is a conductive paste containing silver (Ag) on one side of the glass plate or the ceramic plate 30, Wow;
(S430) baking the pattern printed first and second terminals (31, 32) and the loop circuit (33);
A step S440 of peeling off the transparent adhesive film 35 having adhesion to the fired first and second terminals 31 and 32 and the loop circuit 33 from the glass or ceramic plate 30 ;
The transparent adhesive film 35 attached with the peeled first and second terminals 31 and 32 and the loop circuit 33 is attached to the ferrite sheet so that the peeled first and second terminals 31 and 32 ) And a loop circuit (33) to the ferrite sheet (S450);
A step (S460) of forming an insulating film (36) on the loop circuit (33) to connect the inner terminal (34) of the loop circuit (33) and the second terminal (32);
(S470) connecting a connection circuit (37) of a flexible printed circuit board (FPCB) between an inner end (34) of the loop circuit (33) and a second terminal (32) Gt; a < / RTI > printed loop antenna.
The transparent adhesive film 35 is peeled off after the peeled first and second terminals 31 and 32 and the loop circuit 33 are attached to the ferrite sheet in step S450. A method of manufacturing a loop antenna printed with ink.
The loop circuit 33 and the first and second terminals 31 and 32 formed of the conductive ink are fired at a temperature of 100 to 700 ° C. for 8 to 11 minutes in a firing furnace, Heated at 500 to 700 ° C for 4 to 5 minutes in the second heat treatment section, cooled to 500 to 100 ° C in the third heat treatment section, and then cooled naturally at room temperature. A method for manufacturing an antenna.
Priority Applications (1)
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KR1020140013785A KR101518777B1 (en) | 2014-02-06 | 2014-02-06 | Loop antenna printed by electric conductive ink and manufacturing method thereof |
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KR1020140013785A KR101518777B1 (en) | 2014-02-06 | 2014-02-06 | Loop antenna printed by electric conductive ink and manufacturing method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101915577B1 (en) * | 2017-07-27 | 2018-11-06 | 임주현 | Integrated antenna for vehicle |
KR20180120970A (en) * | 2017-04-28 | 2018-11-07 | (주) 엔피홀딩스 | Wire antenna and method for manufacturing the same |
WO2019221548A1 (en) * | 2018-05-18 | 2019-11-21 | Im Ju Hyeon | Antenna device and method of manufacturing same |
KR20200029423A (en) * | 2018-05-18 | 2020-03-18 | 임주현 | Antenna device and manufacturing method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080065914A (en) * | 2007-01-10 | 2008-07-15 | 도다 고교 가부시끼가이샤 | Substrate with magnetic antenna mounted thereon |
KR20110011803A (en) * | 2009-07-29 | 2011-02-09 | 주식회사 미네르바 | Loop antenna printed by electric conductive ink and the manufacturing method for the same |
-
2014
- 2014-02-06 KR KR1020140013785A patent/KR101518777B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080065914A (en) * | 2007-01-10 | 2008-07-15 | 도다 고교 가부시끼가이샤 | Substrate with magnetic antenna mounted thereon |
KR20110011803A (en) * | 2009-07-29 | 2011-02-09 | 주식회사 미네르바 | Loop antenna printed by electric conductive ink and the manufacturing method for the same |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180120970A (en) * | 2017-04-28 | 2018-11-07 | (주) 엔피홀딩스 | Wire antenna and method for manufacturing the same |
KR101941025B1 (en) * | 2017-04-28 | 2019-01-22 | (주)엔피홀딩스 | Wire antenna and method for manufacturing the same |
KR101915577B1 (en) * | 2017-07-27 | 2018-11-06 | 임주현 | Integrated antenna for vehicle |
WO2019022292A1 (en) * | 2017-07-27 | 2019-01-31 | 임주현 | Vehicle integrated antenna |
WO2019221548A1 (en) * | 2018-05-18 | 2019-11-21 | Im Ju Hyeon | Antenna device and method of manufacturing same |
KR20200029423A (en) * | 2018-05-18 | 2020-03-18 | 임주현 | Antenna device and manufacturing method thereof |
KR102228689B1 (en) * | 2018-05-18 | 2021-03-17 | 임주현 | Antenna device and manufacturing method thereof |
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