JPS62218195A - Thin-film magnetic transducer - Google Patents
Thin-film magnetic transducerInfo
- Publication number
- JPS62218195A JPS62218195A JP61060668A JP6066886A JPS62218195A JP S62218195 A JPS62218195 A JP S62218195A JP 61060668 A JP61060668 A JP 61060668A JP 6066886 A JP6066886 A JP 6066886A JP S62218195 A JPS62218195 A JP S62218195A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- thin film
- card
- thin
- magnetic transducer
- 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.)
- Pending
Links
- 239000010409 thin film Substances 0.000 title claims description 28
- 239000010408 film Substances 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910002555 FeNi Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Magnetic Heads (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は薄膜磁気トランデューサに関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to thin film magnetic transducers.
（従来の技術）
一１イクロプロセッサ及びメモリ素子を内蔵したいわゆ
るＩＣカードと呼ばれるカードが開発されている。この
カードは今までの磁気ストライプ付のカード（磁気カー
ド）に比べてはるかに記憶容量が大きく、また偽造や不
正読出しを防ぐことが可能であるにのＩＣカードは通常
データの入出力のための端子をその表面上に有する。し
かしながら、静電気によるメモリ等の破壊や、使用回数
の増大による端子の摩耗による接触不良といった問題が
考えられている。そこで非接触でＩＣカードと情報の授
受を行うことのできる装置の開発も行われている。例え
ばカード内に設けたコイルとカード外に設けたコイルと
を対向させ、両者間で信号の授受を行うこと等種々提案
されている。(Prior Art) A card called an IC card, which has a built-in microprocessor and a memory element, has been developed. This card has a much larger storage capacity than conventional cards with magnetic stripes (magnetic cards), and can prevent counterfeiting and unauthorized reading. It has a terminal on its surface. However, there are problems such as damage to the memory due to static electricity and poor contact due to wear of the terminals due to increased use. Therefore, devices that can exchange information with IC cards without contact are being developed. For example, various proposals have been made, such as arranging a coil provided inside the card and a coil provided outside the card to face each other, and transmitting and receiving signals between the two.
ところで、上記コイルを用いてカードよりカード外の機
器に信号を出力する場合、外部入出力機器にはコイルを
設けることが必要であり、従来の磁気カードに対応する
カード読み取り装置ではこのカードのデータを読み取る
ことができないという欠点があった◇
（発明が解決しようとする問題点）
上述したように従来のＩＣカードは従来の磁気カード読
み取り装置ではデータを読み取ることができないという
問題があった。本発明はこのような点にかんがみてなさ
れたもので、ＩＣカード等に内蔵させたとき従来の磁気
カード読み取シ装置でもデータを読み取ることができる
薄膜磁気トランスデユーサを提供することを目的とする
。By the way, when using the above-mentioned coil to output signals from the card to equipment outside the card, it is necessary to install a coil in the external input/output equipment, and conventional card reading devices compatible with magnetic cards cannot read the data of this card. ◇ (Problem to be Solved by the Invention) As mentioned above, conventional IC cards had a problem in that the data could not be read by conventional magnetic card reading devices. The present invention has been made in view of the above points, and an object of the present invention is to provide a thin film magnetic transducer that can read data even with conventional magnetic card reading devices when built into an IC card or the like. .
（問題点を解決するための手段）
本発明では１部に空隙部を有し、薄膜コイルが巻回され
たリング状軟磁性薄膜の上下両面に非磁性導体膜を配置
し、これらを非磁性基板上に配置させ、かつ前記軟磁性
薄膜の上部に配置する非磁性導体膜を軟磁性薄膜の空隙
部に対応する部分には形成しないように構成した。(Means for Solving the Problems) In the present invention, non-magnetic conductive films are arranged on both upper and lower surfaces of a ring-shaped soft magnetic thin film having a gap in one part and around which a thin-film coil is wound. The non-magnetic conductive film disposed on the substrate and above the soft magnetic thin film is not formed in the portion corresponding to the gap of the soft magnetic thin film.
（作 用）
となってあられれる。従って例えば、この薄膜磁気トラ
ンスデユーサをカードの所定位置に内蔵すれば、外部の
磁気カード読み取り装置中の磁気ヘッドにて上記磁束を
拾い、カード内のメモリの内容（薄膜コイルにはこの信
号電流が流される）を読み取ることができる。(Action) It will come to you. Therefore, for example, if this thin film magnetic transducer is built into a predetermined position of a card, the above magnetic flux is picked up by the magnetic head in an external magnetic card reading device, and the contents of the memory in the card (the thin film coil is loaded with this signal current). can be read).
（実施例）
μ下、本発明になる薄膜磁気トランスデユーサの一実施
例について説明する、
第１図は上記実施例を示す分解斜視図である。(Embodiment) Below, an embodiment of the thin film magnetic transducer according to the present invention will be described. FIG. 1 is an exploded perspective view showing the above embodiment.
（１）は非磁性基板であり、（２）はこの非磁性基板（
１）上に形成される円板状の第１の非磁性導体膜である
。(1) is a non-magnetic substrate, and (2) is this non-magnetic substrate (
1) A disk-shaped first non-magnetic conductor film formed on top.
この導体膜（２）はＣｕ、ＡＪ等よシなり、蒸着やスパ
ッタ等の方法で形成される。（３）はコアとなるリング
状の磁性＊ａであシ、リングの一部に空隙部（４）を有
する。この磁性薄膜（３）はＦｅＮｉよシ成シ、同じく
蒸着やスパッタ等の方法で形成される。（５）は薄膜コ
イルであり、リング状の磁性薄膜（３）に絶縁膜を導体
膜である。この導体膜（６）は磁性薄膜（３）の空隙径
より大きくなっている。This conductor film (2) is made of Cu, AJ, etc., and is formed by a method such as vapor deposition or sputtering. (3) is a ring-shaped magnetic core *a, and has a gap (4) in a part of the ring. This magnetic thin film (3) is formed from FeNi by a method such as vapor deposition or sputtering. (5) is a thin film coil, which includes a ring-shaped magnetic thin film (3), an insulating film, and a conductive film. This conductive film (6) has a gap diameter larger than that of the magnetic thin film (3).
上記構成の薄膜磁気トランスデユーサはその薄部（４）
からこの磁性薄膜（３）のリング平面と垂直方向の磁界
が発生する。従って、第２図に示すように第１図の簿膜
磁気トランスデユーサａＤをカードα２内に埋め込み、
同じくカード（ｌυに内蔵されているマイクロプロセッ
サ（メモリも一体化） １１３よシ増幅器ａ４を介して
薄膜コイル（５）に信号電流を流すことによシ、カード
α２内に配・置された（例えば磁気カード読み取り装置
中の）磁気ヘッドａ９にてマイクロプロセッサ−中のメ
モリ部の記憶内容を読み取ることができる。なお、ａｌ
は内蔵の電池である。The thin film magnetic transducer with the above configuration has its thin part (4)
A magnetic field is generated in a direction perpendicular to the ring plane of the magnetic thin film (3). Therefore, as shown in FIG. 2, the film magnetic transducer aD of FIG. 1 is embedded in the card α2, and
Similarly, the microprocessor (memory is also integrated) built into the card (lυ) 113 is placed in the card α2 by passing a signal current through the thin film coil (5) via the amplifier a4. For example, the magnetic head a9 (in a magnetic card reader) can read the stored contents of the memory section in the microprocessor.
is a built-in battery.
なお、本実施例においては非磁性導体！ （２１、（６
）を設けているため、磁性薄膜（３）の空隙部（４）以
外におけるリング平面に垂直な方向の磁界の発生（磁束
漏洩）があっても導体膜Ｃ２）、（６）にレンツの法則
による渦電流が流れ、これが上記磁束の漏洩を妨ケル。In addition, in this example, a non-magnetic conductor is used! (21, (6
), even if a magnetic field is generated (magnetic flux leakage) in a direction perpendicular to the ring plane in areas other than the air gap (4) of the magnetic thin film (3), Lenz's law is applied to the conductor film C2) and (6). Eddy currents flow due to this, and this prevents the leakage of the magnetic flux.
従って、磁気トランスデユーサのインダクタンスは導体
膜（２） 、 （６）がない場合に比べて低下し高周波
特性が導体膜（２） 、 （６）がない場合よりも改善
される。さらに複数の信号を処理しようとして上記トラ
ンスデユーサを複数個カード内に隣接配置させた場合で
も、隣接したトランスデユーサとのクロストークを防止
することができる。Therefore, the inductance of the magnetic transducer is lower than in the case without the conductor films (2) and (6), and the high frequency characteristics are improved compared to the case without the conductor films (2) and (6). Furthermore, even when a plurality of the transducers are arranged adjacent to each other in a card in order to process a plurality of signals, crosstalk between adjacent transducers can be prevented.
なお、上記実施例ではマイクロプロセッサとしてメモリ
と一体化したものを考えているが、本発明はこれに限ら
れることな−く両者が別体のものにも適用可能である。In the above embodiment, a microprocessor integrated with a memory is considered, but the present invention is not limited to this, and can also be applied to a microprocessor in which the two are separate units.
また、メモリのみを有したカードにも適用可能である。Further, it is also applicable to a card having only a memory.
本発明によれば、従来の磁気カード読み取り装置でもカ
ードのデータを読み取ることが可能であシ、力葛つまた
インダクタンスを低下させろことができるので、高周波
信号の伝達特性にもすぐれさらに複数隣接配置させても
クロストークの問題が生じない薄膜磁気トランスデユー
サを提供することができる。According to the present invention, it is possible to read card data even with a conventional magnetic card reading device, and since it is possible to reduce force and inductance, the transmission characteristics of high frequency signals are excellent, and multiple devices can be arranged adjacently. It is possible to provide a thin film magnetic transducer that does not cause crosstalk problems even when
第１図は本発明になる薄膜磁気トランスデーサの一実施
例を示す分解斜視図、第２図は第１図の薄膜磁気トラン
スデユーサをＩＣカードに内蔵させた−例を示す斜視図
である。
１・・・非磁性基板、 ２．６・・・非磁性導体膜、
３・・・磁性薄膜、 ４・・・空隙部。
５・・・薄膜コイル。
代理人 弁理士 則 近 憲 佑
同 宇治 弘
第１ｒｓFIG. 1 is an exploded perspective view showing an embodiment of the thin film magnetic transducer according to the present invention, and FIG. 2 is a perspective view showing an example of the thin film magnetic transducer of FIG. 1 built into an IC card. be. 1...Nonmagnetic substrate, 2.6...Nonmagnetic conductor film,
3...Magnetic thin film, 4...Gap portion. 5... Thin film coil. Agent Patent Attorney Noriyuki Chika Yudo Hiroshi Uji 1rs
Claims (1)
導体膜と、この導体膜上に形成され、一部に空隙部を有
するリング状軟磁性薄膜と、このリング状軟磁性薄膜に
巻回された薄膜コイルと、空隙部分の上部を除いてリン
グ状軟磁性薄膜の上部に形成された第２の非磁性導体膜
とを具備したことを特徴とする薄膜磁気トランスデユー
サ。A non-magnetic substrate, a first non-magnetic conductor film formed on the substrate, a ring-shaped soft magnetic thin film formed on the conductor film and having a gap in a part, and a ring-shaped soft magnetic thin film formed on the conductor film. A thin film magnetic transducer comprising a wound thin film coil and a second nonmagnetic conductive film formed on the ring-shaped soft magnetic thin film except for the upper part of the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060668A JPS62218195A (en) | 1986-03-20 | 1986-03-20 | Thin-film magnetic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61060668A JPS62218195A (en) | 1986-03-20 | 1986-03-20 | Thin-film magnetic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62218195A true JPS62218195A (en) | 1987-09-25 |
Family
ID=13148934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61060668A Pending JPS62218195A (en) | 1986-03-20 | 1986-03-20 | Thin-film magnetic transducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62218195A (en) |
-
1986
- 1986-03-20 JP JP61060668A patent/JPS62218195A/en active Pending
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