KR20070054356A - Antenna for radio frequency identification and making method therefor - Google Patents

Antenna for radio frequency identification and making method therefor Download PDF

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Publication number
KR20070054356A
KR20070054356A KR1020050112277A KR20050112277A KR20070054356A KR 20070054356 A KR20070054356 A KR 20070054356A KR 1020050112277 A KR1020050112277 A KR 1020050112277A KR 20050112277 A KR20050112277 A KR 20050112277A KR 20070054356 A KR20070054356 A KR 20070054356A
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South Korea
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thin film
film sheet
antenna
conductor pattern
manufacturing
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KR1020050112277A
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Korean (ko)
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김성은
오태성
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엘지이노텍 주식회사
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Priority to KR1020050112277A priority Critical patent/KR20070054356A/en
Publication of KR20070054356A publication Critical patent/KR20070054356A/en

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    • 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
    • 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
    • H01Q1/2225—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 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • 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
    • 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
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration

Abstract

본 발명은 소형화한 RFID 안테나 및 이를 제조하기 위한 제조방법을 제공하기 위한 것이다.The present invention is to provide a miniaturized RFID antenna and a manufacturing method for manufacturing the same.

상기의 목적을 달성하기 위한 본 발명은 도체패턴이 형성된 고투자율 박막 쉬트를 다층으로 적층시키고, 상기 박막 쉬트에 형성된 도체패턴들이 전기적으로 접속되는 기술구성으로 이루어진다.The present invention for achieving the above object is made of a technical configuration in which a high permeability thin film sheet on which a conductor pattern is formed is laminated in multiple layers, and the conductor patterns formed on the thin film sheet are electrically connected.

도체패턴, 페라이트, 고투자율, 박막 쉬트 Conductor Pattern, Ferrite, High Permeability, Thin Film Sheet

Description

무선태그용 안테나 및 이의 제조방법{antenna for radio frequency identification and making method therefor} Antenna for radio tag and manufacturing method thereof {antenna for radio frequency identification and making method therefor}

도 1은 종래의 무선태그의 구성을 나타낸 평면도이다.1 is a plan view showing the configuration of a conventional radio tag.

도 2는 본 발명의 일실시예가 적용되는 안테나의 단면도이다.2 is a cross-sectional view of an antenna to which an embodiment of the present invention is applied.

도 3은 본 발명의 일실시예에 적용되는 도체패턴의 예시도이다.3 is an exemplary view of a conductor pattern applied to an embodiment of the present invention.

도 4는 본 발명의 일실시예의 제조방법의 순서도이다.4 is a flowchart of a manufacturing method of an embodiment of the present invention.

본 발명은 무선태그(Radio Frequency Identification: RFID)에 내장되는 무선 태그용 안테나 및 이를 제조하는 방법에 관한 것이다.The present invention relates to an antenna for a wireless tag embedded in a radio frequency identification (RFID) and a method of manufacturing the same.

통상적인 무선태그는 RF신호를 안테나로 수신받고, 안테나에 유기되는 유기전원에 의하여 내부의 칩(IC)을 구동시킨다. A typical wireless tag receives an RF signal through an antenna and drives an internal chip (IC) by an organic power source induced in the antenna.

도 1은 종래의 무선태그의 구성을 나타낸 평면도이다.1 is a plan view showing the configuration of a conventional radio tag.

기판(1)에 IC 칩(2)이 설치되고, IC 칩(2)의 주변에는 기판(1)상에 도체가 루프 형상으로 인쇄되어 안테나(3)를 형성하고 있으며, 안테나(3)에 유기되는 전압을 IC 칩(2)에 공급한다.The IC chip 2 is provided in the board | substrate 1, The conductor is printed in loop shape on the board | substrate 1 in the periphery of the IC chip 2, and the antenna 3 is formed, The voltage to be supplied is supplied to the IC chip 2.

이와 같은 구조의 RFID의 안테나(3)는 루프 형상의 도체 패턴으로 이루어지고, 내부의 IC 칩(2)을 동작시킬 정도의 충분한 전압을 얻기 위하여 도체 패턴은 넓은 면적에 분포되어야 하기 때문에 RFID의 크기가 커지게 되는 문제점을 갖고 있다.The antenna 3 of the RFID having such a structure is made of a loop-shaped conductor pattern, and the size of the RFID is required because the conductor pattern must be distributed in a large area in order to obtain sufficient voltage to operate the internal IC chip 2. Has a problem that becomes large.

본 발명의 목적은 소형화한 RFID 안테나 및 이를 제조하기 위한 제조방법을 제공하기 위한 것이다.An object of the present invention is to provide a miniaturized RFID antenna and a manufacturing method for manufacturing the same.

본 발명의 다른 목적은 RFID 안테나에서 높은 전압을 생성하고, 생성된 전압을 손실 없이 사용할 수 있도록 하기 위한 것이다.Another object of the present invention is to generate a high voltage in the RFID antenna, and to use the generated voltage without loss.

상기의 목적을 달성하기 위한 본 발명은 도체 패턴이 형성된 고투자율 박막 쉬트를 다층으로 적층시키고, 상기 박막 쉬트에 형성된 도체 패턴들이 전기적으로 접속되는 무선태그용 안테나이다.The present invention for achieving the above object is a radio tag antenna in which a high permeability thin film sheet having a conductor pattern is laminated in a multi-layer, and the conductor patterns formed on the thin film sheet are electrically connected.

또한, 본 발명은 고투자율 박막 쉬트를 형성하여 건조하는 단계; 상기 박막 쉬트에 비아홀을 가공하고, 상기 비아홀을 충진하는 단계; 상기 박막 쉬트에 도체 패턴을 형성하는 도체 패턴 형성단계; 상기 도체 패턴이 형성된 박막 쉬트를 적층하는 적층단계; 상기 적층된 박막 쉬트를 저온 소성시키는 소성단계를 포함하는 무선태그용 안테나 제조방법이다. In addition, the present invention comprises the steps of forming and drying a high permeability thin film sheet; Processing via holes in the thin film sheet and filling the via holes; A conductor pattern forming step of forming a conductor pattern on the thin film sheet; A laminating step of laminating the thin film sheet on which the conductor pattern is formed; It is a radio tag antenna manufacturing method comprising a firing step of firing the laminated thin film sheet at low temperature.

이하, 첨부된 도면에 따라서 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일실시예가 적용되는 안테나의 단면도이며, 도 3은 본 발 명의 일실시예에 적용되는 도체패턴의 예시도이며, 도 4는 본 발명의 일실시예의 제조방법의 순서도이다.2 is a cross-sectional view of an antenna to which an embodiment of the present invention is applied, FIG. 3 is an exemplary view of a conductor pattern applied to an embodiment of the present invention, and FIG. 4 is a flowchart of a manufacturing method of an embodiment of the present invention.

도 2에 도시된 안테나(10)는 4개 층의 박막 쉬트(12), (13), (14), (15)로 이루어지며, 각각의 쉬트 상면에는 도체패턴(11)이 인쇄되어지며, 각 쉬트의 도체패턴들은 쉬트에 형성된 비아홀(21), (22), (23), (24)에 충진된 도체들에 의하여 서로 전기적으로 연결된다.The antenna 10 shown in FIG. 2 is composed of four layers of thin sheets 12, 13, 14, and 15, and a conductor pattern 11 is printed on the upper surface of each sheet. The conductor patterns of each sheet are electrically connected to each other by conductors filled in the via holes 21, 22, 23, and 24 formed in the sheet.

이때, 박막 쉬트(12), (13), (14), (15)는 고투자율 재료로 형성함으로써 도체 패턴(11)에 자기장을 집속시키도록 하는 것이 바람직하며, 재료비가 저렴한 페라이트로 이루어진 박막 쉬트가 바람직하다.At this time, the thin film sheets 12, 13, 14, and 15 are made of a high permeability material to focus the magnetic field on the conductor pattern 11, and the thin film sheets made of ferrite having a low material cost. Is preferred.

박막 쉬트를 형성하기 위하여 도 4에 도시된 바와 같이, 페라이트 분말과 바인더를 혼합하여 캐스팅 공정으로 박막으로 쉬트화하여 건조시킨다(S1). 이때, 박막의 두께는 캐스팅 공정의 닥터 브레이드(doctor blade)의 높이에 의하여 결정된다. 각각의 박막 쉬트에 비아홀(via hall)(21), (22), (23), (24)을 가공하고(S2), 비아홀에 도체를 충진시킨 후에(S3) 각각의 박막 쉬트 상면에 도체 페이스트를 스크린 인쇄방법에 의하여 도 3과 같은 형상으로 인쇄한다(S4). 이때, 도체는 도전성이 우수한 금, 은, 구리 등의 전도도가 높은 금속이 바람직하며, 도체 패턴의 형성은 이와 같은 스크린 인쇄방법에 국한 되지 않고, 박막의 도전층을 에칭하여 만들 수 있으며, 박막 쉬트(12), (13), (14), (15)상에 증착시켜 형성할 수 있다.In order to form a thin film sheet, as shown in FIG. 4, ferrite powder and a binder are mixed and sheeted into a thin film by a casting process and dried (S1). At this time, the thickness of the thin film is determined by the height of the doctor blade (doctor blade) of the casting process. Via holes (21), (22), (23), and (24) are machined into each thin film sheet (S2), and conductors are filled into the via holes (S3), and then the conductor paste is formed on the top of each thin film sheet. By the screen printing method is printed in the shape as shown in Figure 3 (S4). In this case, the conductor is preferably a metal having high conductivity such as gold, silver, and copper having excellent conductivity, and the formation of the conductor pattern is not limited to such a screen printing method, and can be made by etching the conductive layer of the thin film, and the thin film sheet. It can form by depositing on (12), (13), (14), and (15).

또한, 도체가 인쇄된 쉬트를 적층시킨 후에 가열, 가압시키고(S5), 소성시킨다(S6).Furthermore, after laminating the sheets on which the conductors are printed, they are heated, pressurized (S5) and fired (S6).

이때, 소성온도는 도체가 전도도가 높은 금속으로 이루어지며, 이러한 금속은 융점이 950℃ 이하이므로 950℃ 이하의 저온 소성이 바람직하다.At this time, the firing temperature is made of a metal having a high conductivity of the conductor, and since the melting point is 950 ° C. or lower, low temperature firing of 950 ° C. or lower is preferable.

상기 목적과 구성으로 이루어지는 본 발명에 따르면, RFID의 안테나를 도체가 인쇄된 박막 쉬트를 적층함으로써 소형화할 수 있다.According to the present invention having the above objects and configurations, the antenna of RFID can be miniaturized by laminating a thin film sheet printed with a conductor.

또한, 박막 쉬트를 고투자율의 페라이트로 형성함으로써 자기장을 집속화시켜 동일 금속패턴인 경우에 높은 전압을 유기할 수 있다.In addition, by forming the thin sheet with ferrite having a high permeability, the magnetic field can be focused to induce high voltage in the same metal pattern.

또한, 저온 소성에 의하여 도체패턴을 전도도가 높은 금속 도체로 형성함으로써 유기된 전압을 손실없이 IC칩에 공급할 수 있다.In addition, by forming the conductor pattern with a high conductivity metal conductor by low temperature firing, the induced voltage can be supplied to the IC chip without loss.

Claims (5)

도체패턴이 형성된 고투자율 박막 쉬트를 다층으로 적층시키고, 상기 박막 쉬트에 형성된 도체패턴들이 전기적으로 접속되는 무선태그용 안테나.A high-permeability thin film sheet having a conductor pattern stacked in a multilayer, and the antenna for a wireless tag is electrically connected to the conductor patterns formed on the thin film sheet. 제 1 항에 있어서, 상기 박막 쉬트는 페라이트분말이 함유되는 것을 특징으로 하는 무선태그용 안테나.The antenna of claim 1, wherein the thin film sheet contains ferrite powder. 고투자율 박막 쉬트를 형성하여 건조하는 단계;Forming and drying the high permeability thin film sheet; 상기 박막 쉬트에 비아홀을 가공하고, 상기 비아홀을 충진하는 단계;Processing via holes in the thin film sheet and filling the via holes; 상기 박막 쉬트에 도체 패턴을 형성하는 도체 패턴 형성단계;A conductor pattern forming step of forming a conductor pattern on the thin film sheet; 상기 도체 패턴이 형성된 박막 쉬트를 적층하는 적층단계;A laminating step of laminating the thin film sheet on which the conductor pattern is formed; 상기 적층된 박막 쉬트를 저온 소성시키는 소성단계를 포함하는 무선태그용 안테나 제조방법. A method for manufacturing an antenna for a wireless tag, comprising a step of firing the laminated thin film sheet at low temperature. 제 3 항에 있어서,The method of claim 3, wherein 상기 소성단계는 950℃ 이하로 소성시키는 것을 특징으로 하는 무선태크용 안테나 제조방법.The firing step is a radio tag antenna manufacturing method, characterized in that firing at 950 ℃ or less. 제 3 항에 있어서,The method of claim 3, wherein 상기 박막 쉬트는 페라이트를 포함하는 것을 특징으로 하는 무선태그용 안테나 제조방법.The thin film sheet is a radio tag antenna manufacturing method comprising a ferrite.
KR1020050112277A 2005-11-23 2005-11-23 Antenna for radio frequency identification and making method therefor KR20070054356A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8284117B2 (en) 2008-12-22 2012-10-09 Samsung Electronics Co., Ltd Antenna device and method of manufacturing the same
WO2017047891A1 (en) * 2015-03-31 2017-03-23 주식회사 이엠따블유 Antenna module and portable terminal having same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8284117B2 (en) 2008-12-22 2012-10-09 Samsung Electronics Co., Ltd Antenna device and method of manufacturing the same
WO2017047891A1 (en) * 2015-03-31 2017-03-23 주식회사 이엠따블유 Antenna module and portable terminal having same
US10318853B2 (en) 2015-03-31 2019-06-11 Emw Co., Ltd. Antenna module and portable terminal having same

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