JP2002117383A - Antenna coil for rfid and its manufacturing method - Google Patents
Antenna coil for rfid and its manufacturing methodInfo
- Publication number
- JP2002117383A JP2002117383A JP2001035020A JP2001035020A JP2002117383A JP 2002117383 A JP2002117383 A JP 2002117383A JP 2001035020 A JP2001035020 A JP 2001035020A JP 2001035020 A JP2001035020 A JP 2001035020A JP 2002117383 A JP2002117383 A JP 2002117383A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic core
- antenna coil
- core member
- insulating member
- insulating
- Prior art date
- Legal status (The legal status 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 status listed.)
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- Credit Cards Or The Like (AREA)
- Details Of Aerials (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、RFID(無線周
波数識別:Radio Frequency Identification)技術を利
用したタグに用いられるアンテナコイル及びその製造方
法に関するものである。[0001] 1. Field of the Invention [0002] The present invention relates to an antenna coil used for a tag using RFID (Radio Frequency Identification) technology and a method of manufacturing the same.
【0002】[0002]
【従来の技術】本出願人は物品に添付されたタグのアン
テナコイルにRFID素子が接続され、この素子に物品
固有のデータを記憶するメモリが設けられ、質問器の送
受信アンテナからタグが共振する周波数の電波を発信す
ることによりタグを活性化し、電波のデータ通信による
読出しコマンドに応じてメモリからデータの読出しを行
うとともに書込みコマンドに応じてメモリにデータを書
込むように構成された物品の識別装置を特許出願した
(特開2000−101471号)。この物品の識別装
置には、2種類のアンテナコイルが開示されている。ま
たアンテナコイルとRFID素子に内蔵されたコンデン
サにて共振回路が構成される。2. Description of the Related Art The applicant of the present invention has connected an RFID element to an antenna coil of a tag attached to an article, provided with a memory for storing data unique to the article, and resonated from the transmitting / receiving antenna of the interrogator. Identification of an article configured to activate a tag by transmitting a radio wave of a frequency, read data from a memory in response to a read command by radio wave data communication, and write data to the memory in response to a write command. The device was applied for a patent (Japanese Patent Laid-Open No. 2000-101471). In this article identification device, two types of antenna coils are disclosed. Further, a resonance circuit is formed by the antenna coil and the capacitor built in the RFID element.
【0003】第1のアンテナコイルとしては、表面が絶
縁層にて被覆された導線を略正方形の渦巻き状に巻回し
てベース板に貼付けることにより形成されたものや、或
いはベース板に積層したアルミニウム箔や銅箔等の導電
層をエッチング法又は打抜き法等により不要部分を除去
して略正方形の渦巻き状に形成されたものが用いられ
る。このように構成された物品の識別装置では、質問器
の送受信アンテナが第1のアンテナコイルに電波を発信
すると、第1のアンテナコイル及びコンデンサにより構
成される共振回路が共振する。この結果、RFID素子
が活性化してこの素子のメモリに記憶されている固有の
データが質問器により読出される。The first antenna coil is formed by winding a conductor whose surface is covered with an insulating layer into a substantially square spiral shape and affixing it to a base plate, or by laminating the base wire on the base plate. A conductive layer such as an aluminum foil or a copper foil formed in a substantially square spiral shape by removing unnecessary portions by an etching method, a punching method, or the like is used. In the article identification device configured as described above, when the transmission / reception antenna of the interrogator transmits a radio wave to the first antenna coil, the resonance circuit including the first antenna coil and the capacitor resonates. As a result, the RFID element is activated and the unique data stored in the memory of this element is read out by the interrogator.
【0004】一方、第2のアンテナコイルとしては、軟
磁性金属の粉末とプラスチックとの複合材により板状又
は円柱状等に形成された磁芯部材と、この磁芯部材の外
周面に巻回されたコイル本体とを有するものが用いられ
る。このように構成された物品の識別装置では、質問器
の送受信アンテナが第2のアンテナコイルに電波を発信
すると、第2のアンテナコイル及びコンデンサにより構
成される共振回路はタグに金属板が重畳されていても共
振する。この結果、RFID素子が活性化してこの素子
のメモリに記憶されている固有のデータが質問器により
読出される。On the other hand, as a second antenna coil, a magnetic core member formed in a plate shape or a columnar shape by a composite material of soft magnetic metal powder and plastic, and a coil wound around the outer peripheral surface of the magnetic core member And a coil body having a coil body. In the article identification device configured as described above, when the transmitting / receiving antenna of the interrogator emits a radio wave to the second antenna coil, a metal plate is superimposed on the tag in the resonance circuit including the second antenna coil and the capacitor. It resonates even if it is. As a result, the RFID element is activated and the unique data stored in the memory of this element is read out by the interrogator.
【0005】[0005]
【発明が解決しようとする課題】しかし、上記従来の第
1のアンテナコイルでは、タグのアンテナコイルを金属
製の物品に密着させると、アンテナコイルに向って発信
された電波により金属板に渦電流が発生し、この渦電流
の影響を受けてタグが作動しなくなる問題点があった。
また、上記従来の第2のアンテナコイルでは、第2のア
ンテナコイルを金属製の物品の表面に密着させてもこの
アンテナコイルは作動するけれども、磁芯部材の外周面
にコイル本体を巻回するため、アンテナ全体が比較的厚
くなって、物品から比較的大きく突出する問題点があっ
た。本発明の目的は、金属製の物品に密着させても、タ
グが確実に作動するとともに、厚さを極めて薄く形成で
きる、RFID用アンテナコイル及びその製造方法を提
供することにある。However, in the above-mentioned conventional first antenna coil, when the antenna coil of the tag is brought into close contact with a metal article, an eddy current is applied to the metal plate by a radio wave transmitted toward the antenna coil. Then, there is a problem that the tag does not operate due to the influence of the eddy current.
In the above-described conventional second antenna coil, the antenna coil operates even if the second antenna coil is brought into close contact with the surface of the metal article, but the coil body is wound around the outer peripheral surface of the magnetic core member. Therefore, there has been a problem that the entire antenna becomes relatively thick and projects relatively large from the article. An object of the present invention is to provide an RFID antenna coil and a method of manufacturing the same, in which a tag operates reliably and can be formed to be extremely thin even when brought into close contact with a metal article.
【0006】[0006]
【課題を解決するための手段】請求項1に係る発明は、
図1及び図2に示すように、磁芯部材16にコイル本体
17を巻回することにより形成されたRFID用アンテ
ナコイルの改良である。その特徴ある構成は、磁芯部材
16が平板状に形成され、コイル本体17が電気絶縁フ
ィルム又は電気絶縁シートにより形成された絶縁部材1
8と、絶縁部材18の表面に導電材料により蛇行するよ
うに形成された導電体19と、絶縁部材18に上記蛇行
する導電体19の間に位置するようにそれぞれ形成され
た複数のスリット18aとを有し、複数のスリット18
aにより絶縁部材16に並んで形成された複数の小片1
8bが磁芯部材16の表裏に交互に配置されかつ導電体
19が磁芯部材16に巻回されるように磁芯部材16が
複数のスリット18aに挿入されたところにある。この
請求項1に記載されたRFID用アンテナコイルでは、
アンテナコイル13の厚さを極めて薄く形成することが
できる。The invention according to claim 1 is
As shown in FIGS. 1 and 2, this is an improvement of an RFID antenna coil formed by winding a coil body 17 around a magnetic core member 16. The characteristic configuration is such that the magnetic core member 16 is formed in a flat plate shape, and the coil body 17 is formed of an electric insulating film or an electric insulating sheet.
8, a conductor 19 formed on the surface of the insulating member 18 so as to meander with a conductive material, and a plurality of slits 18a formed on the insulating member 18 so as to be located between the meandering conductors 19, respectively. And a plurality of slits 18
a plurality of small pieces 1 formed side by side on the insulating member 16
8b are alternately arranged on the front and back of the magnetic core member 16, and the magnetic core member 16 is inserted into the plurality of slits 18a so that the conductor 19 is wound around the magnetic core member 16. In the RFID antenna coil according to the first aspect,
The thickness of the antenna coil 13 can be made extremely thin.
【0007】請求項2に係る発明は、請求項1に係る発
明であって、磁芯部材16が、磁性材料からなる粉末又
はフレーク及びプラスチックの複合材、或いはアモルフ
ァス箔又はアモルファス箔の積層材により形成されこと
を特徴とする。請求項3に係る発明は、請求項1に係る
発明であって、図7に示すように、磁芯部材46が、絶
縁性樹脂フィルム又はシート46aと、その絶縁性樹脂
フィルム又はシート46aの表面に形成された磁性塗膜
46bとを備えたことを特徴とする。この請求項2又は
請求項3に記載されたRFID用アンテナコイルでは、
アンテナコイル13の厚さを更に薄く形成することがで
きる。The invention according to claim 2 is the invention according to claim 1, wherein the magnetic core member 16 is made of a composite material of powder or flake and a plastic made of a magnetic material, or an amorphous foil or a laminated material of an amorphous foil. It is characterized by being formed. The invention according to claim 3 is the invention according to claim 1, wherein, as shown in FIG. 7, the magnetic core member 46 includes an insulating resin film or sheet 46a and a surface of the insulating resin film or sheet 46a. And a magnetic coating film 46b formed on the substrate. In the RFID antenna coil according to claim 2 or 3,
The thickness of the antenna coil 13 can be further reduced.
【0008】請求項4に係る発明は、請求項1ないし3
いずれかに係る発明であって、更に絶縁部材の両面に一
対の電極板からなるコンデンサが設けられ、コンデンサ
が導電体の両端に電気的に接続されたことを特徴とす
る。この請求項4に記載されたRFID用アンテナコイ
ルでは、RFID用タグのICチップに内蔵されかつア
ンテナコイルとともに共振回路を構成するコンデンサの
容量が足りない場合、その足りない分を上記コンデンサ
で補充できる。The invention according to claim 4 is the invention according to claims 1 to 3
The invention according to any of the above aspects, further comprising a capacitor comprising a pair of electrode plates provided on both surfaces of the insulating member, and the capacitor being electrically connected to both ends of the conductor. In the RFID antenna coil according to the fourth aspect, when the capacity of the capacitor included in the IC chip of the RFID tag and constituting the resonance circuit together with the antenna coil is insufficient, the shortage can be supplemented by the capacitor. .
【0009】請求項5に係る発明は、図1〜図3に示す
ように、物品11に取付けられる請求項1ないし4いず
れか記載のアンテナコイル13と、アンテナコイル13
に電気的に接続されかつ物品11毎に異なる固有の情報
が記憶されたICチップ14とを備えたRFID用タグ
であって、ICチップ14がアンテナコイル13の導電
体19の両端に電気的に接続された状態でアンテナコイ
ル13の絶縁部材18の表面に接着されたことを特徴と
する。この請求項5に記載されたRFID用タグでは、
金属製の物品11にタグ12を密着させても、タグ12
が確実に作動するとともに、タグ12の厚さを極めて薄
く形成することができる。According to a fifth aspect of the present invention, as shown in FIGS. 1 to 3, the antenna coil 13 according to any one of the first to fourth aspects is attached to the article 11.
And an IC chip 14 which is electrically connected to the IC chip 14 and stores unique information different for each article 11, wherein the IC chip 14 is electrically connected to both ends of the conductor 19 of the antenna coil 13. It is characterized in that it is bonded to the surface of the insulating member 18 of the antenna coil 13 in the connected state. In the RFID tag according to the fifth aspect,
Even if the tag 12 is brought into close contact with the metal article 11, the tag 12
Operates reliably, and the thickness of the tag 12 can be made extremely thin.
【0010】請求項6に係る発明は、請求項5に係る発
明であって、更に絶縁部材と物品との間に導電性箔又は
導電性板が介装されたことを特徴とする。この請求項6
に記載されたRFID用タグでは、物品が金属により形
成されていても、アンテナコイルがこの金属製の物品か
ら電磁気的に遮蔽されるので、アンテナコイルの共振周
波数が上記金属製の物品の影響を受けなくなる。The invention according to claim 6 is the invention according to claim 5, characterized in that a conductive foil or a conductive plate is further interposed between the insulating member and the article. Claim 6
In the RFID tag described in the above, even if the article is formed of metal, the antenna coil is electromagnetically shielded from the metal article, so that the resonance frequency of the antenna coil is affected by the metal article. I will not receive it.
【0011】請求項7に係る発明は、図5に示すよう
に、電気絶縁フィルム又は電気絶縁シートにより形成さ
れた絶縁部材18の表面に導電材料により蛇行するよう
に導電体19を形成する工程と、蛇行する導電体19の
間に位置するように絶縁部材18に複数のスリット18
aをそれぞれ形成する工程と、平板状の磁芯部材16を
準備する工程と、複数のスリット18aにより絶縁部材
18に並んで形成された複数の小片18bが磁芯部材1
6の表裏に交互に配置されかつ導電体19が磁芯部材1
6に巻回されるように磁芯部材16を複数のスリット1
8aに挿入する工程とを含むRFID用アンテナコイル
の製造方法である。この請求項7に記載されたRFID
用アンテナコイルの製造方法では、上記のような厚さの
極めて薄いRFID用アンテナコイル13を製造するこ
とができる。According to a seventh aspect of the present invention, as shown in FIG. 5, a step of forming a conductor 19 so as to meander with a conductive material on the surface of an insulating member 18 formed of an electric insulating film or an electric insulating sheet. , A plurality of slits 18 in the insulating member 18 so as to be located between the meandering conductors 19.
a, a step of preparing a plate-shaped magnetic core member 16, and a plurality of small pieces 18b formed side by side on the insulating member 18 by a plurality of slits 18a.
6 and the conductor 19 is alternately arranged on the front and back of the magnetic core member 1.
6 so that the magnetic core member 16 is wound into a plurality of slits 1.
8a). A method for manufacturing an RFID antenna coil, comprising: The RFID according to claim 7
In the manufacturing method of the antenna coil for RFID, the antenna coil 13 for RFID having the extremely small thickness as described above can be manufactured.
【0012】請求項8に係る発明は、請求項7に係る発
明であって、平板状の磁芯部材16を準備する工程が、
磁性材料からなる粉末又はフレーク及びプラスチックの
複合材、或いはアモルファス箔又はアモルファス箔の積
層材により磁芯部材16を平板状に形成する工程である
ことを特徴とする。請求項9に係る発明は、請求項7に
係る発明であって、図8に示すように、平板状の磁芯部
材46を準備する工程が、磁性材料からなる粉末又はフ
レークを含む塗料を絶縁性樹脂フィルム又はシート46
aの表面に塗布乾燥することにより、絶縁性樹脂フィル
ム又はシート46aの表面に磁性塗膜46bが形成され
た磁芯部材46を得る工程であることを特徴とする。こ
の請求項8及び請求項9に記載されたRFID用アンテ
ナコイルの製造方法では、更に厚さの薄いRFID用ア
ンテナコイル13を製造することができる。The invention according to claim 8 is the invention according to claim 7, wherein the step of preparing the plate-shaped magnetic core member 16 comprises:
The process is characterized in that the magnetic core member 16 is formed in a flat plate shape by using a composite material of powder or flake and plastic made of a magnetic material, or an amorphous foil or a laminated material of an amorphous foil. The invention according to claim 9 is the invention according to claim 7, wherein, as shown in FIG. 8, the step of preparing the plate-shaped magnetic core member 46 includes insulating a paint containing powder or flakes made of a magnetic material. Resin film or sheet 46
a step of obtaining a magnetic core member 46 in which a magnetic coating film 46b is formed on the surface of an insulating resin film or sheet 46a by applying and drying the surface of a. According to the method of manufacturing the RFID antenna coil described in the eighth and ninth aspects, the RFID antenna coil 13 having a smaller thickness can be manufactured.
【0013】請求項10に係る発明は、請求項7ないし
9いずれかに係る発明であって、更に図6及び図7に示
すように、磁芯部材16を複数のスリット18aに挿入
するときに、複数の小片18bを絶縁部材18の両面か
ら交互に負圧にて吸引し、絶縁部材18に磁芯部材16
を挿通するための挿通孔18cを形成する工程を更に含
むことを特徴とする。請求項11に係る発明は、請求項
7ないし9いずれかに係る発明であって、更に図8及び
図9に示すように、磁芯部材46を複数のスリット18
aに挿入するときに、複数の小片18bを絶縁部材18
の両面から交互に静電気にて吸着し、絶縁部材18に磁
芯部材46を挿通するための挿通孔18cを形成する工
程を更に含むことを特徴とする。これら請求項10又は
11に記載されたRFID用アンテナコイルの製造方法
では、複数の小片18bが磁芯部材16,46の表裏に
交互に配置されかつ導電体19が磁芯部材16,46に
巻回されるように、磁芯部材16,46を速やかに複数
のスリット18aに挿入することができる。The invention according to claim 10 is the invention according to any one of claims 7 to 9, wherein the magnetic core member 16 is inserted into a plurality of slits 18a as shown in FIGS. , A plurality of small pieces 18 b are alternately sucked from both sides of the insulating member 18 with a negative pressure, and the magnetic core member 16 is attached to the insulating member 18.
The method further comprises a step of forming an insertion hole 18c for inserting the through hole. The invention according to claim 11 is the invention according to any one of claims 7 to 9, and furthermore, as shown in FIG. 8 and FIG.
a into the insulating member 18
The method further comprises the step of forming an insertion hole 18c for inserting the magnetic core member 46 into the insulating member 18 by alternately attracting the surface from both surfaces by static electricity. In the method for manufacturing an RFID antenna coil according to claim 10 or 11, a plurality of small pieces 18b are alternately arranged on the front and back of the magnetic core members 16, 46, and the conductor 19 is wound around the magnetic core members 16, 46. The magnetic core members 16, 46 can be quickly inserted into the plurality of slits 18a so as to be turned.
【0014】請求項12に係る発明は、請求項7ないし
11いずれかに係る発明であって、更に図5に示すよう
に、導電体19が絶縁部材18の表面に積層された導電
フィルム又は導電シートをエッチングすることにより形
成されたことを特徴とする。この請求項12に記載され
たRFID用アンテナコイルの製造方法では、表面に導
電体19が形成された絶縁部材18を安価に製造するこ
とができる。また導電体を絶縁部材の表面に導電材料を
所定のパターンでスクリーン印刷又は蒸着することによ
り形成することもできる。The invention according to claim 12 is the invention according to any one of claims 7 to 11, wherein, as shown in FIG. 5, a conductive film or a conductive film in which a conductor 19 is laminated on the surface of the insulating member 18. It is characterized by being formed by etching a sheet. According to the method of manufacturing an RFID antenna coil according to the twelfth aspect, the insulating member 18 having the conductor 19 formed on the surface can be manufactured at low cost. Alternatively, the conductor can be formed by screen printing or vapor deposition of a conductive material on the surface of the insulating member in a predetermined pattern.
【0015】請求項14に係る発明は、請求項7ないし
13いずれかに係る発明であって、更に図1、図2及び
図5に示すように、磁芯部材16,46又は絶縁部材1
9のいずれか一方又は双方に接着剤を塗布し、磁芯部材
16,46を絶縁部材18の複数のスリット18aに挿
入した後に、所定の圧力又は所定の圧力及び熱を加える
ことにより磁芯部材16,46を絶縁部材18に接着す
ることを特徴とする。この請求項14に記載されたRF
ID用アンテナコイルの製造方法では、磁芯部材16,
46を複数のスリット18aに挿入した状態で絶縁部材
18に極めて容易に固定することができる。The invention according to claim 14 is the invention according to any one of claims 7 to 13, and further includes a magnetic core member 16, 46 or an insulating member 1 as shown in FIGS.
9 is coated with an adhesive, and after inserting the magnetic core members 16 and 46 into the plurality of slits 18 a of the insulating member 18, a predetermined pressure or a predetermined pressure and heat are applied to the magnetic core member. 16 and 46 are bonded to the insulating member 18. The RF according to claim 14,
In the method of manufacturing the ID antenna coil, the magnetic core member 16,
In a state where the 46 is inserted into the plurality of slits 18a, it can be very easily fixed to the insulating member 18.
【0016】請求項15に係る発明は、図2及び図3に
示すように、請求項7ないし14いずれか記載の方法に
より製造されたアンテナコイル13の導電体19の両端
に、物品11毎に異なる固有の情報が記憶されたICチ
ップ14を電気的に接続した状態で、ICチップ14を
アンテナコイル13の絶縁部材18の表面に接着する工
程を含むRFID用タグの製造方法である。この請求項
15に記載されたRFID用タグの製造方法では、上記
のような厚さの極めて薄いRFID用タグ12を製造す
ることができる。According to a fifteenth aspect, as shown in FIGS. 2 and 3, both ends of the conductor 19 of the antenna coil 13 manufactured by the method according to any one of the seventh to fourteenth aspects are provided for each article 11. This is a method for manufacturing an RFID tag including a step of bonding the IC chip 14 to the surface of the insulating member 18 of the antenna coil 13 while electrically connecting the IC chip 14 storing different unique information. According to the method for manufacturing an RFID tag according to the fifteenth aspect, the RFID tag 12 having an extremely small thickness as described above can be manufactured.
【0017】[0017]
【発明の実施の形態】次に本発明の第1の実施の形態を
図面に基づいて説明する。図1〜図3に示すように、物
品11の表面にはRFID用タグ12が取付けられる。
このタグ12は物品11に取付けられるアンテナコイル
13と、このアンテナコイル13に電気的に接続されか
つ物品11毎に異なる固有の情報が記憶されたICチッ
プ14とを備える。物品11はこの実施の形態では倉庫
に保管された部品や製品等であり、金属により形成され
る。アンテナコイル13は平板状に形成された磁芯部材
16と、磁芯部材16にその長手方向を軸として螺旋状
に巻回されたコイル本体17とを有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, an RFID tag 12 is attached to the surface of the article 11.
The tag 12 includes an antenna coil 13 attached to the article 11 and an IC chip 14 electrically connected to the antenna coil 13 and storing unique information different for each article 11. In this embodiment, the article 11 is a part, a product, or the like stored in a warehouse, and is formed of metal. The antenna coil 13 has a magnetic core member 16 formed in a flat plate shape, and a coil body 17 spirally wound around the magnetic core member 16 with its longitudinal direction as an axis.
【0018】磁芯部材16はフェライト等の磁性材料の
粉末又はフレークとプラスチックとの複合材により長方
形状に形成されるか、或いはFe系アモルファス合金
(アライドケミカル社製のMETGLAS 2605S
−2)やCo系アモルファス合金(アライドケミカル社
製のMETGLAS 2714A)等のアモルファス箔
又はその積層材により長方形状に形成される。上記プラ
スチックとしては加工性の良い熱可塑性のプラスチック
を用いたり、或いは耐熱性の良い熱硬化性のプラスチッ
クを用いたりすることができる。また上記磁性材料の粉
末としては、カーボニル鉄粉末,鉄−パーマロイ等のア
トマイズ粉末,還元鉄粉末等が用いられる。一方、磁性
材料のフレークとしては、上記粉末をボールミル等で微
細化して粉末を成形した後に、この粉末を機械的に扁平
化して得られたフレークや、鉄系又はコバルト系アモル
ファス合金の溶湯粒を水冷銅に衝突させて得られたフレ
ークが用いられる。The magnetic core member 16 is formed in a rectangular shape from a powder of magnetic material such as ferrite or a composite material of flake and plastic, or an Fe-based amorphous alloy (METGLAS 2605S manufactured by Allied Chemical Co., Ltd.).
-2) or an amorphous foil such as a Co-based amorphous alloy (METGLAS 2714A manufactured by Allied Chemical Co., Ltd.) or a laminate thereof, and is formed in a rectangular shape. As the plastic, a thermoplastic plastic having good workability or a thermosetting plastic having good heat resistance can be used. Examples of the magnetic material powder include carbonyl iron powder, atomized powder such as iron-permalloy, and reduced iron powder. On the other hand, as flakes of a magnetic material, flakes obtained by finely pulverizing the powder with a ball mill or the like and then forming the powder mechanically and flattening the powder, or molten iron or cobalt-based amorphous alloy particles are used. Flake obtained by colliding with water-cooled copper is used.
【0019】また磁芯部材16は磁性材料の粉末又はフ
レーク及びプラスチックの複合材を射出成形又は圧縮成
形することにより形成されることが好ましい。このよう
に形成された磁芯部材16は脆弱なフェライトにより形
成された磁芯部材と比較して、強靱であるため薄くして
も割れ難い。また磁性材料の粉末又はフレークがプラス
チックに分散されている、即ち磁性材料の粉末又はフレ
ークがプラスチックにより相互に絶縁されているため、
磁芯部材16全体としては導電性を有せず、高周波の電
波を受けても渦電流は発生しない。The magnetic core member 16 is preferably formed by injection molding or compression molding of a magnetic material powder or flake and plastic composite material. The magnetic core member 16 formed in this way is tougher than a magnetic core member formed of fragile ferrite, so that it is hard to crack even when thinned. Also, since the magnetic material powder or flakes are dispersed in the plastic, that is, the magnetic material powder or flakes are insulated from each other by the plastic,
The magnetic core member 16 as a whole has no conductivity, and does not generate eddy currents even when receiving high-frequency radio waves.
【0020】一方、コイル本体17は電気絶縁フィルム
又は電気絶縁シートにより形成された絶縁部材18と、
絶縁部材18の表面に導電材料により蛇行するように形
成された導電体19と、絶縁部材18に上記蛇行する導
電体19の間に位置するようにそれぞれ形成された複数
のスリット18aとを有する。絶縁部材18は電気絶縁
性を有するプラスチック製のフィルム又はシート或いは
紙により長方形状に形成されるが、ポリエステルやポリ
イミド等のプラスチックフィルム又はプラスチックシー
トにより形成されることが好ましい。導電体19は絶縁
部材18の表面にその長手方向に所定の間隔をあけかつ
その幅方向に延びる複数の平行導電部19aと、これら
の平行導電部19aの両端を交互に接続して上記平行導
電部19aを蛇行させる複数の接続部19bとを有す
る。また絶縁部材18の表面には一対のリード部21,
21が設けられる。これらのリード部21,21の一端
は絶縁部材18の長手方向の両端に位置する平行導電部
19a,19aにそれぞれ接続され、他端は絶縁部材1
8の長手方向の略中央に互いに近接するように設けられ
る。On the other hand, the coil main body 17 includes an insulating member 18 formed of an electric insulating film or an electric insulating sheet,
It has a conductor 19 formed on the surface of the insulating member 18 so as to meander by a conductive material, and a plurality of slits 18 a formed on the insulating member 18 so as to be located between the meandering conductors 19. The insulating member 18 is formed in a rectangular shape from a plastic film, sheet, or paper having electrical insulation properties, but is preferably formed from a plastic film or plastic sheet such as polyester or polyimide. The conductor 19 is provided on the surface of the insulating member 18 at predetermined intervals in the longitudinal direction and extends in the width direction thereof, and a plurality of parallel conductive portions 19a. And a plurality of connecting portions 19b meandering the portion 19a. On the surface of the insulating member 18, a pair of lead portions 21,
21 are provided. One ends of these lead portions 21 and 21 are connected to parallel conductive portions 19 a and 19 a located at both ends in the longitudinal direction of the insulating member 18, respectively.
8 are provided close to each other at substantially the center in the longitudinal direction.
【0021】複数のスリット18aは複数の平行導電部
19aの間に位置するように絶縁部材18の幅方向に延
びてそれぞれ形成され、スリット18aの長さは磁芯部
材16の幅より長くかつ平行導電部19aの長さより短
く形成される。また複数のスリット18aを上記のよう
に絶縁部材18に形成することにより、絶縁部材18に
は複数の小片18bが並んで形成される。磁芯部材16
はこれらの小片18bが磁芯部材16の表裏に交互に配
置されかつ導電体19が磁芯部材16に巻回されるよう
に複数のスリット18aに挿入される。更にICチップ
14は一対のリード線21,21の他端にそれぞれ電気
的に接続された状態で、絶縁部材18の表面に接着され
る。The plurality of slits 18a extend in the width direction of the insulating member 18 so as to be located between the plurality of parallel conductive portions 19a. The length of the slit 18a is longer than the width of the magnetic core member 16 and is parallel. It is formed shorter than the length of the conductive portion 19a. In addition, by forming the plurality of slits 18a in the insulating member 18 as described above, the plurality of small pieces 18b are formed in the insulating member 18 side by side. Magnetic core member 16
These small pieces 18b are alternately arranged on the front and back of the magnetic core member 16 and inserted into the plurality of slits 18a so that the conductor 19 is wound around the magnetic core member 16. Further, the IC chip 14 is adhered to the surface of the insulating member 18 while being electrically connected to the other ends of the pair of lead wires 21 and 21.
【0022】上記ICチップ14は図4に示すように、
電源回路14aと、無線周波数(RF)回路14bと、
変調回路14cと、復調回路14dと、CPU14e
と、このCPU14eに接続され物品11に固有の情報
が記憶されるメモリ14fとを有する。電源回路14a
はコンデンサ(図示せず)を内蔵し、このコンデンサは
アンテナコイル13とともに共振回路を形成する。この
コンデンサにはアンテナコイル13が特定の周波数の電
波(上記共振回路が共振する周波数)を受信したときに
その相互誘導作用で生じる電力が充電される。電源回路
14aはこの電力を整流し安定化してCPU14eに供
給し、ICチップ14を活性化する。メモリ14fはR
OM(read only memory)、RAM(ramdom-access me
mory)及びEEPROM(electrically erasable prog
rammable read only memory)を含み、CPU14eの
制御の下で識別手段22からの電波のデータ通信による
読出しコマンドに応じて記憶されたデータの読出しを行
うとともに、識別手段22からの書込みコマンドに応じ
てデータの書込みが行われる。The IC chip 14 is, as shown in FIG.
A power supply circuit 14a, a radio frequency (RF) circuit 14b,
Modulation circuit 14c, demodulation circuit 14d, CPU 14e
And a memory 14f connected to the CPU 14e and storing information unique to the article 11. Power supply circuit 14a
Has a built-in capacitor (not shown), and this capacitor forms a resonance circuit with the antenna coil 13. When the antenna coil 13 receives a radio wave of a specific frequency (frequency at which the resonance circuit resonates), the capacitor is charged with electric power generated by the mutual induction action. The power supply circuit 14a rectifies and stabilizes this power and supplies it to the CPU 14e to activate the IC chip 14. Memory 14f is R
OM (read only memory), RAM (ramdom-access me
mory) and EEPROM (electrically erasable prog)
read out of the stored data under the control of the CPU 14e, in response to a read command by radio wave data communication from the identification means 22, and read data stored in response to a write command from the identification means 22. Is written.
【0023】上記識別手段22は図4に示すように、ア
ンテナコイル13と相互誘導作用する送受信アンテナ2
3と、送受信アンテナ23から電波を発信しかつ送受信
アンテナ23の受けた電波を処理する処理部24と、I
Cチップ14のメモリ14fに記憶された情報を表示す
る表示部26とを有する。送受信アンテナ23は物品1
1に取付けられたタグ12のアンテナコイル13に電波
を発信しかつそのアンテナコイル13からの電波を受信
可能に構成される。また処理部24は送受信アンテナ2
3に接続されかつバッテリを内蔵する電源回路24a
と、無線周波数(RF)回路24bと、変調回路24c
と、復調回路24dと、CPU24eと、このCPU2
4eに接続されICチップ14から読取った情報を記憶
するメモリ24fとを有する。また処理部24のCPU
24eには入力部24gが接続され、この入力部24g
により入力された情報はICチップ14のメモリ14f
に書込み可能に構成される。上記識別手段22は倉庫の
管理者により持運び可能に構成される。またICチップ
14のメモリ14fにはその物品11の名称、材質、重
量、製造年月日等が記憶される。As shown in FIG. 4, the identification means 22 includes a transmitting and receiving antenna 2 which interacts with the antenna coil 13.
3, a processing unit 24 for transmitting radio waves from the transmitting / receiving antenna 23 and processing the radio waves received by the transmitting / receiving antenna 23,
A display unit 26 for displaying information stored in the memory 14f of the C chip 14. The transmitting / receiving antenna 23 is the article 1
1 is configured to transmit a radio wave to the antenna coil 13 of the tag 12 attached to the tag 1 and to receive a radio wave from the antenna coil 13. The processing unit 24 includes the transmitting / receiving antenna 2
Power supply circuit 24a connected to the power supply 3 and containing a battery
, A radio frequency (RF) circuit 24b, and a modulation circuit 24c
, A demodulation circuit 24d, a CPU 24e, and the CPU 2
4e, and a memory 24f for storing information read from the IC chip 14. The CPU of the processing unit 24
The input unit 24g is connected to the input unit 24g.
Is input to the memory 14f of the IC chip 14.
Is configured to be writable. The identification means 22 is configured to be portable by a warehouse manager. The name, material, weight, date of manufacture, and the like of the article 11 are stored in the memory 14f of the IC chip 14.
【0024】このように構成されたRFID用アンテナ
13及びRFID用タグ12の製造方法を図2及び図5
〜図7に基づいて説明する。先ず電気絶縁フィルム又は
電気絶縁シートにより長方形状に形成された絶縁部材1
8の表面に導電材料により蛇行する導電体19及び一対
のリード部21,21を形成する(図5(a))。導電
体19及びリード部21は絶縁部材18の表面に積層さ
れたCu,Al,Zn等の導電フィルム又は導電シート
をエッチングすることにより形成される。これにより表
面に導電体19及びリード部21が形成された絶縁部材
18を安価に製造することができる。なお、導電体及び
リード部を絶縁部材の表面にCu,Al,Zn等の導電
材料を所定のパターンでスクリーン印刷又は蒸着するこ
とにより形成してもよい。次いで上記蛇行する導電体1
9の間に位置するように、複数の平行導電部19aの間
に位置するように、絶縁部材18に複数のスリット18
aをそれぞれ形成する(図5(b))。これらのスリッ
ト18aの両端には破れ防止のために小径の孔18dを
それぞれ形成することが好ましい(図2及び図5
(b))。FIGS. 2 and 5 show a method of manufacturing the RFID antenna 13 and the RFID tag 12 configured as described above.
This will be described with reference to FIG. First, an insulating member 1 formed in a rectangular shape by an electric insulating film or an electric insulating sheet.
A conductor 19 meandering with a conductive material and a pair of leads 21 and 21 are formed on the surface of the substrate 8 (FIG. 5A). The conductor 19 and the lead portion 21 are formed by etching a conductive film or a conductive sheet of Cu, Al, Zn or the like laminated on the surface of the insulating member 18. Thereby, the insulating member 18 having the conductor 19 and the lead portion 21 formed on the surface can be manufactured at low cost. The conductor and the lead may be formed on the surface of the insulating member by screen printing or vapor deposition of a conductive material such as Cu, Al, or Zn in a predetermined pattern. Next, the meandering conductor 1
9 so as to be located between the plurality of parallel conductive portions 19a so as to be located between the plurality of parallel conductive portions 19a.
a are formed (FIG. 5B). It is preferable to form small-diameter holes 18d at both ends of these slits 18a to prevent breakage (FIGS. 2 and 5).
(B)).
【0025】次に磁性材料からなる粉末又はフレーク及
びプラスチックの複合材又はアモルファス箔の積層材に
より磁芯部材16を長方形の平板状に形成する。この磁
芯部材16の長さは上記絶縁部材18の長さと略同一に
形成され、磁芯部材16の幅は上記スリット18aの長
さより短く形成される。更に上記磁芯部材16を複数の
スリット18aに挿入する(図5(c))。このとき絶
縁部材18の複数の小片18bは真空吸引装置31によ
り絶縁部材18の両面から交互に負圧にて吸引される
(図5(c)、図6及び図7)。この真空吸引装置31
は図6及び図7に詳しく示すように、絶縁部材18の上
方に設けられ複数の小片18bのうち一つ置きの小片1
8bに対向する複数のアッパ吸引孔32aが形成された
アッパ吸引具32と、絶縁部材18の下方に設けられ残
りの小片18bに対向する複数のロア吸引孔33aが形
成されたロア吸引具33と、上記アッパ吸引孔32a及
びロア吸引孔33aにエア管路34を介して接続された
真空ポンプ36と、真空ポンプ36を駆動する電動モー
タ37と、エア管路34に設けられアッパ吸引孔32a
及びロア吸引孔33aを真空ポンプ36又は大気に連通
するように切換える切換弁38とを備える。Next, the magnetic core member 16 is formed in a rectangular flat plate shape using a composite material of powder or flakes of magnetic material and plastic or a laminate of amorphous foil. The length of the magnetic core member 16 is substantially the same as the length of the insulating member 18, and the width of the magnetic core member 16 is shorter than the length of the slit 18a. Further, the magnetic core member 16 is inserted into the plurality of slits 18a (FIG. 5C). At this time, the plurality of small pieces 18b of the insulating member 18 are alternately suctioned from both sides of the insulating member 18 by negative pressure by the vacuum suction device 31 (FIGS. 5C, 6 and 7). This vacuum suction device 31
As shown in detail in FIGS. 6 and 7, every other small piece 1 of the plurality of small pieces 18 b is provided above the insulating member 18.
An upper suction tool 32 having a plurality of upper suction holes 32a opposed to 8b; and a lower suction tool 33 provided below the insulating member 18 and having a plurality of lower suction holes 33a opposed to the remaining small pieces 18b. A vacuum pump 36 connected to the upper suction hole 32a and the lower suction hole 33a through an air pipe 34, an electric motor 37 for driving the vacuum pump 36, and an upper suction hole 32a provided in the air pipe 34.
And a switching valve 38 for switching the lower suction hole 33a to communicate with the vacuum pump 36 or the atmosphere.
【0026】アッパ吸引孔32a及びロア吸引孔33a
を真空ポンプ36に連通するように切換弁38を切換え
て電動モータ37により真空ポンプ36を駆動し、ロア
吸引具33上に絶縁部材18を載せてアッパ吸引具32
を絶縁部材18の上面に密着させた後に、アッパ吸引具
32を所定の距離だけ上昇させる。これにより複数の小
片18bのうち一つ置きの小片18bがアッパ吸引具3
2により引上げられ、残りの小片18bがロア吸引具3
3に吸引された状態に保たれるので、絶縁部材18に磁
芯部材16を挿通するための挿通孔18cが形成される
(図5(c))。この状態で挿通孔18cに磁芯部材1
6を遊挿した後に、アッパ吸引孔32a及びロア吸引孔
33aを大気に連通するように切換弁38を切換える
と、アッパ吸引具32に吸引された小片18bがアッパ
吸引具32から離れて磁芯部材16の上面に密着する
(図5(d))。この結果、複数の小片18bが磁芯部
材16の表裏に交互に配置されかつ導電体19が磁芯部
材16に巻回されるように、磁芯部材16を速やかに複
数のスリット18aに挿入することができる。このよう
に製造されたアンテナコイル13の厚さは極めて薄い。Upper suction hole 32a and lower suction hole 33a
The switching valve 38 is switched so as to communicate with the vacuum pump 36, the vacuum pump 36 is driven by the electric motor 37, the insulating member 18 is placed on the lower suction tool 33, and the upper suction tool 32
Is brought into close contact with the upper surface of the insulating member 18, and then the upper suction tool 32 is raised by a predetermined distance. As a result, every other small piece 18b of the plurality of small pieces 18b is
2 and the remaining small piece 18b is
Since the magnetic core member 16 is maintained in the state of being sucked by the insulating member 18, an insertion hole 18 c for inserting the magnetic core member 16 into the insulating member 18 is formed (FIG. 5C). In this state, the magnetic core member 1 is inserted into the insertion hole 18c.
After loosely inserting 6, the switching valve 38 is switched so that the upper suction hole 32a and the lower suction hole 33a communicate with the atmosphere. It is in close contact with the upper surface of the member 16 (FIG. 5D). As a result, the magnetic core member 16 is quickly inserted into the slits 18a so that the plurality of small pieces 18b are alternately arranged on the front and back of the magnetic core member 16 and the conductor 19 is wound around the magnetic core member 16. be able to. The thickness of the antenna coil 13 manufactured in this manner is extremely thin.
【0027】なお、予め磁芯部材16又は絶縁部材18
のいずれか一方又は双方に所定の圧力又は所定の圧力及
び熱を加えることにより接着可能な接着剤を塗布してお
けば、磁芯部材16を絶縁部材18の複数のスリット1
8aに挿入した後に、所定の圧力又は所定の圧力及び熱
を加えると、磁芯部材16は絶縁部材18に接着され
る。この結果、磁芯部材16を複数のスリット18aに
挿入した状態で絶縁部材18に極めて容易に固定するこ
とができる。そして一対のリード部21,21の他端に
ICチップ14を電気的に接続した状態で、このICチ
ップ14をアンテナコイル13の絶縁部材18の表面に
接着することにより(図2)、RFID用タグ12が製
造される。このように製造されたRFID用タグ12は
極めて薄いため、物品11に取付けても、物品11から
殆ど突出しない。The magnetic core member 16 or the insulating member 18
By applying a predetermined pressure or an adhesive that can be bonded by applying a predetermined pressure and heat to one or both of them, the magnetic core member 16 can be connected to the plurality of slits 1 of the insulating member 18.
When a predetermined pressure or a predetermined pressure and heat are applied after being inserted into 8a, the magnetic core member 16 is bonded to the insulating member 18. As a result, the magnetic core member 16 can be extremely easily fixed to the insulating member 18 with the magnetic core member 16 inserted into the plurality of slits 18a. The IC chip 14 is adhered to the surface of the insulating member 18 of the antenna coil 13 in a state where the IC chip 14 is electrically connected to the other ends of the pair of lead portions 21 and 21 (FIG. 2). The tag 12 is manufactured. Since the RFID tag 12 manufactured in this manner is extremely thin, it hardly projects from the article 11 even when attached to the article 11.
【0028】また、絶縁部材と物品との間にAl等によ
り形成された導電性箔又は導電性板を介装することが好
ましい。これにより物品が金属にて形成されていても、
アンテナコイルがこの物品から電磁気的に遮蔽されるの
で、アンテナコイルの共振周波数が上記物品の影響を殆
ど受けなくなる。更に絶縁部材の両面に一対の電極板か
らなるコンデンサを設け、このコンデンサを一対のリー
ド部に電気的に接続すれば、RFID用タグのICチッ
プに内蔵されかつアンテナコイルとともに共振回路を構
成するコンデンサの容量が足りないときに、その足りな
い分を上記コンデンサで補充できる。Preferably, a conductive foil or a conductive plate made of Al or the like is interposed between the insulating member and the article. Thus, even if the article is made of metal,
Since the antenna coil is electromagnetically shielded from the article, the resonance frequency of the antenna coil is hardly affected by the article. Further, if a capacitor composed of a pair of electrode plates is provided on both surfaces of the insulating member and this capacitor is electrically connected to a pair of lead portions, the capacitor is built in the IC chip of the RFID tag and forms a resonance circuit together with the antenna coil. When the capacity is insufficient, the shortage can be supplemented by the capacitor.
【0029】このように構成されたRFID用タグ12
の動作を説明する。倉庫の管理者は識別手段22を用い
て物品11をチェックする。具体的には識別手段22の
送受信アンテナ23をタグ12に近付け、送受信アンテ
ナ23からタグ12のアンテナコイル13に向けて2値
化されたデジタル信号の質問信号を特定周波数の電波に
より送信する。識別手段22から発せられるデジタル信
号は、図示しない信号発生器から発せられ変調回路14
cで変調を受け、RF回路14bでこの変調した信号を
増幅して送受信アンテナ23から送信される。この変調
には例えばASK(振幅変調)、FSK(周波数変調)
又はPSK(位相変調)が挙げられる。送信された質問
信号の電波はタグ12のアンテナコイル13に受信され
る。The RFID tag 12 constructed as described above
Will be described. The manager of the warehouse checks the article 11 using the identification means 22. Specifically, the transmission / reception antenna 23 of the identification unit 22 is brought close to the tag 12, and a binary digital interrogation signal is transmitted from the transmission / reception antenna 23 to the antenna coil 13 of the tag 12 by radio waves of a specific frequency. The digital signal output from the identification means 22 is output from a signal generator (not shown) and output from the modulation circuit 14.
The signal is modulated by c, and the modulated signal is amplified by the RF circuit 14b and transmitted from the transmitting / receiving antenna 23. For example, ASK (amplitude modulation), FSK (frequency modulation)
Or PSK (phase modulation). The transmitted radio wave of the interrogation signal is received by the antenna coil 13 of the tag 12.
【0030】このため、アンテナコイル13と電源回路
14aのコンデンサとにより構成される共振回路の共振
の振幅が大きくなるので、このコンデンサには十分な量
の電力が充電される、即ち送受信アンテナ23とアンテ
ナコイル13の相互誘導作用により十分な量の電力が電
源回路14aのコンデンサに充電される。電源回路14
aはこの電力を整流し安定化してCPU14eに供給
し、ICチップ14を活性化し、更にRF回路14bを
介して復調回路14dで元のデジタル信号の質問信号を
再現させる。CPU14eはこの質問信号に基づいてメ
モリ14fに書込まれていたその物品11に関する情報
を送信する。この情報の送信は2値化されたデータ信号
をICチップ14の変調回路14cで変調し、RF回路
14bで増幅してアンテナコイル13から送出すること
により行われる。送信されたデータは識別手段22の送
受信アンテナ23が受信し、処理部24はタグ12から
の物品固有の情報を表示部26に表示する。倉庫の管理
者は表示部26に表示された情報を見てその物品11の
保管場所を変更したり或いは工場に搬送して在庫管理す
る。As a result, the resonance amplitude of the resonance circuit formed by the antenna coil 13 and the capacitor of the power supply circuit 14a increases, so that this capacitor is charged with a sufficient amount of power, that is, the transmission / reception antenna 23 A sufficient amount of power is charged in the capacitor of the power supply circuit 14a by the mutual induction action of the antenna coil 13. Power supply circuit 14
A rectifies and stabilizes this power and supplies it to the CPU 14e to activate the IC chip 14. Further, the interrogation signal of the original digital signal is reproduced by the demodulation circuit 14d via the RF circuit 14b. The CPU 14e transmits the information about the article 11 written in the memory 14f based on the inquiry signal. The transmission of this information is performed by modulating the binarized data signal with the modulation circuit 14c of the IC chip 14, amplifying the data signal with the RF circuit 14b, and transmitting the amplified signal from the antenna coil 13. The transmitted data is received by the transmission / reception antenna 23 of the identification unit 22, and the processing unit 24 displays information unique to the article from the tag 12 on the display unit 26. The manager of the warehouse looks at the information displayed on the display unit 26 and changes the storage location of the article 11 or transports the article 11 to a factory for inventory management.
【0031】また管理者は識別手段22の入力部24g
から在庫管理した日付をICチップ14のメモリ14f
に書込む。具体的には識別手段22の送受信アンテナ2
3からタグ12のアンテナコイル13に向けて上記在庫
管理した日付を特定周波数の電波により送信する。この
情報は2値化されたデジタル信号として識別手段22か
ら発せられる。このデジタル信号は、図示しない信号発
生器から発せられ変調回路24cで変調を受け、RF回
路24bでこの変調した信号を増幅して送受信アンテナ
23から送信される。送信された電波はタグ12のアン
テナコイル13に受信され、この受信により、電源回路
14aのコンデンサには送受信アンテナ23とアンテナ
コイル13の相互誘導作用で生じる電力が充電される。
この結果、電源回路14aは電力を整流し安定化してC
PU14eに供給し、ICチップ14を活性化する。次
にICチップ14のRF回路14bでは復調に必要な信
号のみを取込み、復調回路14dで上記情報のデジタル
信号を再現させて、CPU14eによりこのデジタル信
号をメモリ14fに書込む。Further, the administrator operates the input section 24g of the identification means 22.
From the stock management date of the IC chip 14
Write to. Specifically, the transmitting / receiving antenna 2 of the identification unit 22
From 3 to the antenna coil 13 of the tag 12, the date on which the stock was managed is transmitted by radio waves of a specific frequency. This information is issued from the identification means 22 as a binary digital signal. The digital signal is emitted from a signal generator (not shown), is modulated by a modulation circuit 24c, is amplified by an RF circuit 24b, and is transmitted from a transmission / reception antenna 23. The transmitted radio wave is received by the antenna coil 13 of the tag 12, and by this reception, the capacitor of the power supply circuit 14a is charged with the power generated by the mutual induction between the transmitting / receiving antenna 23 and the antenna coil 13.
As a result, the power supply circuit 14a rectifies and stabilizes the power,
This is supplied to the PU 14e to activate the IC chip 14. Next, the RF circuit 14b of the IC chip 14 fetches only the signal necessary for demodulation, the demodulation circuit 14d reproduces the digital signal of the information, and the CPU 14e writes the digital signal to the memory 14f.
【0032】図8及び図9は本発明の第2の実施の形態
を示す。図8及び図9において図6及び図7と同一符号
は同一部品を示す。この実施の形態では、磁芯部材46
が、絶縁性樹脂フィルム又はシート46aと、この絶縁
性樹脂フィルム又はシート46aの表面に形成された磁
性塗膜46bとを備える。絶縁性樹脂フィルム又はシー
ト46aとしてはポリエチレンテレフタレート(PE
T)又はポリイミドからなる電気絶縁性のフィルム又は
シートが用いられ、長方形状に形成された絶縁性樹脂フ
ィルム又はシート46aの表面に第1の実施の形態で説
明した磁性材料からなる粉末又はフレークを含む塗料を
塗布乾燥させることにより、絶縁性樹脂フィルム又はシ
ート46aの表面に磁性塗膜46bが形成された磁芯部
材46が得られる。FIGS. 8 and 9 show a second embodiment of the present invention. 8 and 9, the same reference numerals as those in FIGS. 6 and 7 indicate the same parts. In this embodiment, the magnetic core member 46
Has an insulating resin film or sheet 46a and a magnetic coating film 46b formed on the surface of the insulating resin film or sheet 46a. Polyethylene terephthalate (PE) is used as the insulating resin film or sheet 46a.
T) or an electrically insulating film or sheet made of polyimide is used, and a powder or flake made of the magnetic material described in the first embodiment is coated on the surface of an insulating resin film or sheet 46a formed in a rectangular shape. By applying and drying the paint containing, the magnetic core member 46 in which the magnetic coating film 46b is formed on the surface of the insulating resin film or sheet 46a is obtained.
【0033】ここで絶縁性樹脂フィルム又はシート46
aの厚さは10〜100μmであることが好ましく、更
に好ましくは20〜40μmである。またその表面に形
成された磁性塗膜46bの厚さは10〜800μmが好
ましく、更に好ましくは30〜300μmである。な
お、塗料を一度塗布しただけでは所定の厚さが得られな
い場合には、繰り返し同一の塗料を塗布乾燥することに
より所望の厚さの塗膜を得ることができる。このように
構成された磁芯部材46では、射出成形において成形が
困難な0.8mm以下の厚さの磁芯部材46を比較的安
価に得ることができる。また、塗料を塗布乾燥させるこ
とにより磁性塗膜46bを形成するので、その塗料に磁
性材料からなるフレークを含ませた場合には、そのフレ
ークを絶縁性樹脂フィルム又はシート46aの表面に平
行に配置することができ、磁芯部材46の特性を向上さ
せることもできる。Here, the insulating resin film or sheet 46
The thickness a is preferably from 10 to 100 μm, more preferably from 20 to 40 μm. Further, the thickness of the magnetic coating film 46b formed on the surface thereof is preferably from 10 to 800 μm, and more preferably from 30 to 300 μm. In addition, when a predetermined thickness cannot be obtained by simply applying the paint once, a coating film having a desired thickness can be obtained by repeatedly applying and drying the same paint. With the magnetic core member 46 configured as described above, the magnetic core member 46 having a thickness of 0.8 mm or less, which is difficult to mold in injection molding, can be obtained at relatively low cost. Moreover, since the magnetic coating film 46b is formed by applying and drying the paint, when the paint contains flakes made of a magnetic material, the flakes are arranged in parallel to the surface of the insulating resin film or sheet 46a. Therefore, the characteristics of the magnetic core member 46 can be improved.
【0034】また、この実施の形態では、磁芯部材46
を複数のスリット18aに挿入するときに、絶縁部材1
8の複数の小片18bが静電吸着装置51により絶縁部
材18の両面から交互に静電気にて吸着され、絶縁部材
18に磁芯部材46を挿通するための挿通孔18cが形
成される。この静電吸着装置51は絶縁部材18の上方
に設けられ複数の小片18bのうち一つ置きの小片18
bに対向する複数のアッパ突起52aが形成されたアッ
パ吸着具52と、絶縁部材18の下方に設けられ残りの
小片18bに対向する複数のロア突起53aが形成され
たロア吸着具53と、上記アッパ吸着具52及びロア吸
着具53に電気的に接続された静電気発生機54とを備
える。アッパ吸着具52及びロア吸着具53は導電材料
により形成される。上記以外は第1の実施の形態と同一
に構成される。In this embodiment, the magnetic core member 46
When inserting into the plurality of slits 18a, the insulating member 1
The plurality of small pieces 18b are alternately attracted by electrostatic attraction from both sides of the insulating member 18 by the electrostatic attraction device 51, and an insertion hole 18c for inserting the magnetic core member 46 into the insulating member 18 is formed. The electrostatic attraction device 51 is provided above the insulating member 18, and every other small piece 18 out of the plurality of small pieces 18 b is provided.
b, a lower suction tool 52 provided with a plurality of lower projections 53a provided below the insulating member 18 and opposed to the remaining small piece 18b; An electrostatic generator 54 is electrically connected to the upper suction tool 52 and the lower suction tool 53. The upper suction tool 52 and the lower suction tool 53 are formed of a conductive material. Except for the above, the configuration is the same as that of the first embodiment.
【0035】このように構成された静電吸着装置51の
使用方法を説明する。先ず第1の実施の形態と同様にし
て絶縁部材18の表面に導電体19を形成した後に、絶
縁部材18に複数のスリット18aを形成する。次にロ
ア吸着具53上に絶縁部材18を載せてアッパ吸着具5
2を絶縁部材18の上面に密着させた後に、静電気発生
機54を作動させてアッパ吸着具52を所定の距離だけ
上昇させる。このとき静電気発生機54により発生した
静電気がアッパ突起52a及びロア突起53aの先端に
達するので、複数の小片18bのうち一つ置きの小片1
8bがアッパ突起52aにより引上げられ、残りの小片
18bがロア突起53aに吸着された状態に保たれ、絶
縁部材18に磁芯部材46を挿通するための挿通孔18
cが形成される。この状態で挿通孔18cに磁芯部材4
6を遊挿した後に、静電気発生機54を停止すると、ア
ッパ突起52aに吸着された小片18bがアッパ突起5
2aから離れて磁芯部材46の上面に密着する。この結
果、複数の小片18bが磁芯部材46の表裏に交互に配
置されかつ導電体19が磁芯部材46に巻回されるよう
に、磁芯部材46を速やかに複数のスリット18bに挿
入することができる。上記以外のアンテナコイルの製造
方法は第1の実施の形態と略同様であるので、繰返しの
説明を省略する。A method of using the electrostatic suction device 51 thus configured will be described. First, a conductor 19 is formed on the surface of the insulating member 18 in the same manner as in the first embodiment, and then a plurality of slits 18a are formed in the insulating member 18. Next, the insulating member 18 is placed on the lower suction tool 53 and the upper suction tool 5
After bringing 2 into close contact with the upper surface of the insulating member 18, the static electricity generator 54 is operated to raise the upper suction tool 52 by a predetermined distance. At this time, the static electricity generated by the static electricity generator 54 reaches the tips of the upper projection 52a and the lower projection 53a.
8b is pulled up by the upper projection 52a, the remaining small pieces 18b are held in a state of being adsorbed by the lower projection 53a, and the insertion holes 18 for inserting the magnetic core member 46 into the insulating member 18 are provided.
c is formed. In this state, the magnetic core member 4 is inserted into the insertion hole 18c.
When the static electricity generator 54 is stopped after loosely inserting the small protrusion 6, the small piece 18 b adsorbed on the upper protrusion 52 a is moved to the upper protrusion 5.
2a, and closely adheres to the upper surface of the magnetic core member 46. As a result, the magnetic core member 46 is quickly inserted into the slits 18b such that the plurality of small pieces 18b are alternately arranged on the front and back of the magnetic core member 46 and the conductor 19 is wound around the magnetic core member 46. be able to. Since the manufacturing method of the antenna coil other than the above is substantially the same as that of the first embodiment, the description thereof will not be repeated.
【0036】[0036]
【発明の効果】以上述べたように、本発明によれば、絶
縁部材の表面に蛇行するように導電体を形成し、絶縁部
材に上記蛇行する導電体の間に位置するように複数のス
リットをそれぞれ形成し、複数のスリットにより絶縁部
材に並んで形成された複数の小片が磁芯部材の表裏に交
互に配置されかつ導電体が磁芯部材に巻回されるように
磁芯部材を複数のスリットに挿入したので、アンテナコ
イルの厚さを極めて薄く形成することができる。また絶
縁部材の両面に一対の電極板からなるコンデンサを設
け、このコンデンサを導電体の両端に電気的に接続すれ
ば、RFID用タグのICチップに内蔵されかつアンテ
ナコイルとともに共振回路を構成するコンデンサの足り
ない容量を上記コンデンサで補充できる。As described above, according to the present invention, a conductor is formed in a meandering manner on the surface of an insulating member, and a plurality of slits are formed in the insulating member so as to be located between the meandering conductors. Are formed, and a plurality of small pieces formed side by side on the insulating member by the plurality of slits are alternately arranged on the front and back of the magnetic core member, and the plurality of magnetic core members are wound so that the conductor is wound around the magnetic core member. The antenna coil can be formed to be extremely thin. Further, if a capacitor composed of a pair of electrode plates is provided on both surfaces of the insulating member and this capacitor is electrically connected to both ends of the conductor, the capacitor is built into the IC chip of the RFID tag and forms a resonance circuit together with the antenna coil. Insufficient capacity can be replenished with the capacitor.
【0037】またRFID用タグのICチップをアンテ
ナコイルの導電体の両端に電気的に接続した状態で、ア
ンテナコイルの絶縁部材の表面に接着すれば、金属製の
物品にタグを密着させても、タグが確実に作動するとと
もに、厚さが極めて薄いタグを得ることができる。また
絶縁部材と物品との間に導電性箔又は導電性板を介装す
れば、物品が金属により形成されていても、アンテナコ
イルがこの金属製の物品から電磁気的に遮蔽されるの
で、アンテナコイルの共振周波数が上記金属製の物品の
影響を受けなくなる。If the IC chip of the RFID tag is electrically connected to both ends of the conductor of the antenna coil and adhered to the surface of the insulating member of the antenna coil, the tag can be adhered to a metal article. In addition, the tag operates reliably, and a tag having a very small thickness can be obtained. Also, if a conductive foil or a conductive plate is interposed between the insulating member and the article, the antenna coil is electromagnetically shielded from the metal article even if the article is formed of metal, so that the antenna The resonance frequency of the coil is not affected by the metal article.
【0038】また絶縁部材の表面に導電材料により蛇行
するように導電体を形成し、蛇行する導電体の間に位置
するように絶縁部材に複数のスリットをそれぞれ形成
し、更に複数のスリットにより絶縁部材に並んで形成さ
れた複数の小片が平板状の磁芯部材の表裏に交互に配置
されかつ導電体が磁芯部材に巻回されるように磁芯部材
を複数のスリットに挿入すれば、上記のような厚さの極
めて薄いアンテナコイルを製造することができる。また
磁芯部材を複数のスリットに挿入するときに、複数の小
片を絶縁部材の両面から交互に、負圧にて吸引し或いは
静電気にて吸着し、絶縁部材に磁芯部材を挿通するため
の挿通孔を形成すれば、複数の小片が磁芯部材の表裏に
交互に配置されかつ導電体が磁芯部材に巻回されるよう
に磁芯部材を速やかに複数のスリットに挿入することが
できる。Further, a conductor is formed on the surface of the insulating member so as to meander with a conductive material, a plurality of slits are formed in the insulating member so as to be located between the meandering conductors, and furthermore, a plurality of slits are used for insulation. If a plurality of small pieces formed side by side on the member are alternately arranged on the front and back of the plate-shaped magnetic core member and the magnetic core member is inserted into the plurality of slits so that the conductor is wound around the magnetic core member, An extremely thin antenna coil as described above can be manufactured. Also, when inserting the magnetic core member into the plurality of slits, a plurality of small pieces are alternately sucked from both sides of the insulating member by negative pressure or adsorbed by static electricity, so that the magnetic core member is inserted through the insulating member. By forming the insertion hole, the magnetic core member can be quickly inserted into the plurality of slits such that the plurality of small pieces are alternately arranged on the front and back of the magnetic core member, and the conductor is wound around the magnetic core member. .
【0039】また導電体を絶縁部材の表面に積層された
導電フィルム等をエッチングすることにより形成すれ
ば、表面に導電体が形成された絶縁部材を安価に製造す
ることができる。また磁芯部材又は絶縁部材のいずれか
一方又は双方に接着剤を塗布し、磁芯部材を絶縁部材の
複数のスリットに挿入した後に、所定の圧力等を加える
ことにより磁芯部材を絶縁部材に接着すれば、磁芯部材
を複数のスリットに挿入した状態で絶縁部材に極めて容
易に固定することができる。更に上記アンテナコイルの
導電体の両端にICチップを電気的に接続した状態で、
ICチップをアンテナコイルの絶縁部材の表面に接着す
れば、上記のような厚さの極めて薄いRFID用タグを
製造することができる。When the conductor is formed by etching a conductive film or the like laminated on the surface of the insulating member, the insulating member having the conductor formed on the surface can be manufactured at low cost. Also, an adhesive is applied to one or both of the magnetic core member and the insulating member, and after inserting the magnetic core member into the plurality of slits of the insulating member, a predetermined pressure or the like is applied to the magnetic core member to the insulating member. By bonding, the magnetic core member can be extremely easily fixed to the insulating member while being inserted into the plurality of slits. Further, with the IC chip electrically connected to both ends of the conductor of the antenna coil,
If the IC chip is adhered to the surface of the insulating member of the antenna coil, an extremely thin RFID tag as described above can be manufactured.
【図1】本発明第1実施形態のRFID用タグを示す図
2のA−A線断面図。FIG. 1 is a sectional view taken along line AA of FIG. 2 showing an RFID tag according to a first embodiment of the present invention.
【図2】図1のB矢視図。FIG. 2 is a view taken in the direction of arrow B in FIG. 1;
【図3】そのタグに識別手段の送受信アンテナを対向さ
せた状態を示す側面図。FIG. 3 is a side view showing a state in which a transmitting / receiving antenna of an identification unit is opposed to the tag.
【図4】そのタグ及び識別手段の構成図。FIG. 4 is a configuration diagram of the tag and identification means.
【図5】そのRFID用アンテナコイルの製造手順を示
す工程図。FIG. 5 is a process chart showing a manufacturing procedure of the RFID antenna coil.
【図6】絶縁部材のスリット間の複数の小片を負圧によ
り上下交互に吸引している状態を示す図7のC−C線断
面図。FIG. 6 is a cross-sectional view taken along the line CC of FIG. 7, showing a state in which a plurality of small pieces between slits of the insulating member are vertically sucked alternately by negative pressure.
【図7】図6のD−D線断面図。FIG. 7 is a sectional view taken along line DD of FIG. 6;
【図8】本発明の第2実施形態における絶縁部材のスリ
ット間の複数の小片を静電気により上下交互に吸着して
いる状態を示す図9のE−E線断面図。FIG. 8 is a cross-sectional view taken along the line EE of FIG. 9 showing a state in which a plurality of small pieces between slits of an insulating member are alternately and vertically attracted by static electricity in a second embodiment of the present invention.
【図9】図8のF−F線断面図。FIG. 9 is a sectional view taken along line FF of FIG. 8;
11 物品 12 RFID用タグ 13 アンテナコイル 14 ICチップ 16 磁芯部材 17 コイル本体 18 絶縁部材 18a スリット 18b 小片 18c 挿通孔 19 導電体 46 磁芯部材 46a 絶縁性樹脂フィルム又はシート 46b 磁性塗膜 DESCRIPTION OF SYMBOLS 11 Article 12 RFID tag 13 Antenna coil 14 IC chip 16 Magnetic core member 17 Coil main body 18 Insulating member 18a Slit 18b Small piece 18c Insertion hole 19 Conductor 46 Magnetic core member 46a Insulating resin film or sheet 46b Magnetic coating
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2C005 MA15 MA18 MB10 NA08 5B035 AA04 BA03 BB09 CA01 5J046 AA07 AB11 PA04 PA07 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 MA15 MA18 MB10 NA08 5B035 AA04 BA03 BB09 CA01 5J046 AA07 AB11 PA04 PA07
Claims (15)
回することにより形成されたRFID用アンテナコイル
において、 前記磁芯部材(16,46)が平板状に形成され、 前記コイル本体(17)が電気絶縁フィルム又は電気絶縁シ
ートにより形成された絶縁部材(18)と、前記絶縁部材(1
8)の表面に導電材料により蛇行するように形成された導
電体(19)と、前記絶縁部材(18)に前記蛇行する導電体(1
9)の間に位置するようにそれぞれ形成された複数のスリ
ット(18a)とを有し、 前記複数のスリット(18a)により前記絶縁部材(18)に並
んで形成された複数の小片(18b)が前記磁芯部材(16,46)
の表裏に交互に配置されかつ前記導電体(19)が前記磁芯
部材(16,46)に巻回されるように前記磁芯部材(16,46)が
前記複数のスリット(18a)に挿入されたことを特徴とす
るRFID用アンテナコイル。An RFID antenna coil formed by winding a coil body (17) around a magnetic core member (16, 46), wherein the magnetic core member (16, 46) is formed in a flat plate shape, An insulating member (18) in which the coil body (17) is formed of an electric insulating film or an electric insulating sheet; and the insulating member (1
8) a conductor (19) formed to meander with a conductive material on the surface, and the meandering conductor (1) on the insulating member (18).
9) a plurality of slits (18a) respectively formed so as to be located between, a plurality of small pieces (18b) formed side by side with the insulating member (18) by the plurality of slits (18a) Is the magnetic core member (16, 46)
The magnetic core members (16, 46) are inserted into the plurality of slits (18a) such that the conductors (19) are alternately arranged on the front and back sides and the conductor (19) is wound around the magnetic core members (16, 46). An antenna coil for RFID.
又はフレーク及びプラスチックの複合材、或いはアモル
ファス箔又はアモルファス箔の積層材により形成された
請求項1記載のRFID用アンテナコイル。2. The RFID antenna coil according to claim 1, wherein the magnetic core member is formed of a composite material of powder or flake and plastic made of a magnetic material, or an amorphous foil or a laminated material of an amorphous foil.
はシート(46a)と、前記絶縁性樹脂フィルム又はシート
(46a)の表面に形成された磁性塗膜(46b)とを備えた請求
項1記載のRFID用アンテナコイル。3. A magnetic core member (46) comprising an insulating resin film or sheet (46a) and said insulating resin film or sheet.
The antenna coil for RFID according to claim 1, further comprising a magnetic coating film (46b) formed on the surface of (46a).
コンデンサが設けられ、前記コンデンサが導電体の両端
に電気的に接続された請求項1ないし3いずれか記載の
RFID用アンテナコイル。4. The RFID antenna coil according to claim 1, wherein a capacitor comprising a pair of electrode plates is provided on both surfaces of the insulating member, and the capacitor is electrically connected to both ends of the conductor.
4いずれか記載のアンテナコイル(13)と、前記アンテナ
コイル(13)に電気的に接続されかつ前記物品(11)毎に異
なる固有の情報が記憶されたICチップ(14)とを備えた
RFID用タグであって、 前記ICチップ(14)が前記アンテナコイル(13)の導電体
(19)の両端に電気的に接続された状態で前記アンテナコ
イル(13)の絶縁部材(18)の表面に接着されたことを特徴
とするRFID用タグ。5. An antenna coil (13) according to any one of claims 1 to 4 attached to an article (11), and a unique antenna electrically connected to said antenna coil (13) and different for each article (11). An RFID tag comprising an IC chip (14) in which information of the antenna coil (13) is stored, wherein the IC chip (14) is a conductor of the antenna coil (13).
An RFID tag which is adhered to the surface of an insulating member (18) of the antenna coil (13) while being electrically connected to both ends of (19).
電性板が介装された請求項5記載のRFID用タグ。6. The RFID tag according to claim 5, wherein a conductive foil or a conductive plate is interposed between the insulating member and the article.
より形成された絶縁部材(18)の表面に導電材料により蛇
行するように導電体(19)を形成する工程と、前記蛇行す
る導電体(19)の間に位置するように前記絶縁部材(18)に
複数のスリット(18a)をそれぞれ形成する工程と、 平板状の磁芯部材(16,46)を準備する工程と、 前記複数のスリット(18a)により前記絶縁部材(18)に並
んで形成された複数の小片(18a)が前記磁芯部材(16,46)
の表裏に交互に配置されかつ前記導電体(19)が前記磁芯
部材(16,46)に巻回されるように前記磁芯部材(16,46)を
前記複数のスリット(18a)に挿入する工程とを含むRF
ID用アンテナコイルの製造方法。7. A step of forming a conductor (19) so as to meander with a conductive material on a surface of an insulating member (18) formed by an electric insulating film or an electric insulating sheet; and the meandering conductor (19). A step of forming a plurality of slits (18a) in the insulating member (18) so as to be located between the plurality of slits (18a); a step of preparing a plate-shaped magnetic core member (16, 46); A plurality of small pieces (18a) formed side by side with the insulating member (18) by the magnetic core member (16, 46)
The magnetic core members (16, 46) are inserted into the plurality of slits (18a) so that the conductors (19) are alternately arranged on the front and back sides and the conductor (19) is wound around the magnetic core members (16, 46). RF
A method for manufacturing an ID antenna coil.
が、磁性材料からなる粉末又はフレーク及びプラスチッ
クの複合材、或いはアモルファス箔又はアモルファス箔
の積層材により磁芯部材(16)を平板状に形成する工程で
ある請求項7記載のRFID用アンテナコイルの製造方
法。8. The step of preparing a magnetic core member (16) in the form of a flat plate includes the steps of: preparing a magnetic core member (16) from a composite material of powder or flakes and plastic made of a magnetic material; or an amorphous foil or a laminated material of an amorphous foil. The method for manufacturing an RFID antenna coil according to claim 7, which is a step of forming a flat plate.
が、磁性材料からなる粉末又はフレークを含む塗料を絶
縁性樹脂フィルム又はシート(46a)の表面に塗布乾燥す
ることにより、前記絶縁性樹脂フィルム又はシート(46
a)の表面に磁性塗膜(46b)が形成された磁芯部材(16)を
得る工程である請求項7記載のRFID用アンテナコイ
ルの製造方法。9. The step of preparing a plate-shaped magnetic core member (46) is performed by applying a coating material containing powder or flakes made of a magnetic material to the surface of an insulating resin film or sheet (46a) and drying the coating material. Insulating resin film or sheet (46
8. The method for manufacturing an RFID antenna coil according to claim 7, wherein the step (a) is a step of obtaining a magnetic core member (16) having a magnetic coating film (46b) formed on a surface thereof.
a)に挿入するときに、複数の小片(18b)を絶縁部材(18)
の両面から交互に負圧にて吸引し、前記絶縁部材(18)に
前記磁芯部材(16,46)を挿通するための挿通孔(18c)を形
成する工程を更に含む請求項7ないし9いずれか記載の
RFID用アンテナコイルの製造方法。10. The magnetic core member (16, 46) is connected to a plurality of slits (18).
When inserted into a), a plurality of small pieces (18b) are
10. The method according to claim 7, further comprising the step of forming a through-hole (18c) through which said magnetic core member (16, 46) is inserted into said insulating member (18) by alternately sucking the magnetic core member (16, 46) from both surfaces. The manufacturing method of any one of the above-described RFID antenna coils.
a)に挿入するときに、複数の小片(18b)を前記絶縁部材
(18)の両面から交互に静電気にて吸着し、前記絶縁部材
(18)に前記磁芯部材(16,46)を挿通するための挿通孔(18
c)を形成する工程を更に含む請求項7ないし9いずれか
記載のRFID用アンテナコイルの製造方法。11. The magnetic core member (16, 46) is connected to a plurality of slits (18).
a) when inserting the small pieces (18b) into the insulating member
(18) The insulating member is alternately adsorbed by static electricity from both sides,
An insertion hole (18) for inserting the magnetic core member (16, 46) through (18).
The method for manufacturing an RFID antenna coil according to any one of claims 7 to 9, further comprising the step of forming (c).
層された導電フィルム又は導電シートをエッチングする
ことにより形成された請求項7ないし11いずれか記載
のRFID用アンテナコイルの製造方法。12. The manufacture of an RFID antenna coil according to claim 7, wherein the conductor (19) is formed by etching a conductive film or a conductive sheet laminated on the surface of the insulating member (18). Method.
所定のパターンでスクリーン印刷又は蒸着することによ
り形成された請求項7ないし11いずれか記載のRFI
D用アンテナコイルの製造方法。13. The RFI according to claim 7, wherein the conductor is formed by screen-printing or vapor-depositing a conductive material on the surface of the insulating member in a predetermined pattern.
A method for manufacturing an antenna coil for D.
いずれか一方又は双方に接着剤を塗布し、前記磁芯部材
(16,46)を前記絶縁部材(18)の複数のスリット(18a)に挿
入した後に、所定の圧力又は所定の圧力及び熱を加える
ことにより前記磁芯部材(16,46)を前記絶縁部材(18)に
接着する請求項7ないし13いずれか記載のRFID用
アンテナコイルの製造方法。14. An adhesive is applied to one or both of the magnetic core member (16, 46) and the insulating member (18),
After inserting the (16, 46) into the plurality of slits (18a) of the insulating member (18), a predetermined pressure or a predetermined pressure and heat are applied so that the magnetic core member (16, 46) is The method for manufacturing an RFID antenna coil according to any one of claims 7 to 13, which is bonded to (18).
法により製造されたアンテナコイル(13)の導電体(19)の
両端に、物品(11)毎に異なる固有の情報が記憶されたI
Cチップ(14)を電気的に接続した状態で、前記ICチッ
プ(14)を前記アンテナコイル(13)の絶縁部材(18)の表面
に接着する工程を含むRFID用タグの製造方法。15. An I coil in which different information for each article (11) is stored at both ends of a conductor (19) of an antenna coil (13) manufactured by the method according to claim 7.
A method for manufacturing an RFID tag, comprising a step of bonding the IC chip (14) to the surface of an insulating member (18) of the antenna coil (13) while the C chip (14) is electrically connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2001035020A JP2002117383A (en) | 2000-08-01 | 2001-02-13 | Antenna coil for rfid and its manufacturing method |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000232662 | 2000-08-01 | ||
JP2000-232662 | 2000-08-01 | ||
JP2001035020A JP2002117383A (en) | 2000-08-01 | 2001-02-13 | Antenna coil for rfid and its manufacturing method |
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Publication Number | Publication Date |
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JP2002117383A true JP2002117383A (en) | 2002-04-19 |
Family
ID=26597132
Family Applications (1)
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JP2001035020A Pending JP2002117383A (en) | 2000-08-01 | 2001-02-13 | Antenna coil for rfid and its manufacturing method |
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JP2006081140A (en) * | 2003-12-11 | 2006-03-23 | Hitachi Metals Ltd | Antenna, radio clock using the same, keyless entry system, and rfid system |
WO2007000807A1 (en) | 2005-06-28 | 2007-01-04 | Fujitsu Limited | Radio frequency identification tag |
JP2007035879A (en) * | 2005-07-26 | 2007-02-08 | Sumida Corporation | Magnetic element |
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DE102014203169A1 (en) * | 2014-02-21 | 2015-09-10 | Siemens Medical Instruments Pte. Ltd. | Antenna with shielding device and manufacturing method |
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2001
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006081140A (en) * | 2003-12-11 | 2006-03-23 | Hitachi Metals Ltd | Antenna, radio clock using the same, keyless entry system, and rfid system |
WO2007000807A1 (en) | 2005-06-28 | 2007-01-04 | Fujitsu Limited | Radio frequency identification tag |
JP2007035879A (en) * | 2005-07-26 | 2007-02-08 | Sumida Corporation | Magnetic element |
EP1887652A1 (en) * | 2006-08-08 | 2008-02-13 | Samsung Electronics Co., Ltd. | Loop antenna having matching circuit integrally formed |
US7554501B2 (en) | 2006-08-08 | 2009-06-30 | Samsung Electronics Co., Ltd. | Loop antenna having matching circuit integrally formed |
JP2010154007A (en) * | 2008-12-24 | 2010-07-08 | Murata Mfg Co Ltd | Magnetic antenna and antenna device |
DE102014203169A1 (en) * | 2014-02-21 | 2015-09-10 | Siemens Medical Instruments Pte. Ltd. | Antenna with shielding device and manufacturing method |
US9559409B2 (en) | 2014-02-21 | 2017-01-31 | Sivantos Pte. Ltd. | Antenna with shielding apparatus and manufacturing method |
CN104952596A (en) * | 2015-06-22 | 2015-09-30 | 广东明路电力电子有限公司 | Panel coil reactance or inductor and machining technology thereof |
CN109888498A (en) * | 2017-12-06 | 2019-06-14 | 三星电机株式会社 | Radio antenna |
CN109888468A (en) * | 2017-12-06 | 2019-06-14 | 三星电机株式会社 | Antenna assembly and equipment including the antenna assembly |
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