JPH0199893A - Ic card - Google Patents
Ic cardInfo
- Publication number
- JPH0199893A JPH0199893A JP62259019A JP25901987A JPH0199893A JP H0199893 A JPH0199893 A JP H0199893A JP 62259019 A JP62259019 A JP 62259019A JP 25901987 A JP25901987 A JP 25901987A JP H0199893 A JPH0199893 A JP H0199893A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- resistor
- card
- conductive film
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 230000005611 electricity Effects 0.000 abstract description 12
- 230000003068 static effect Effects 0.000 abstract description 12
- 239000004020 conductor Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101100514842 Xenopus laevis mtus1 gene Proteins 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はＩＣカードに係シ、特に静電気に強いＩＣカー
ドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an IC card, and particularly to an IC card that is resistant to static electricity.
従来のＩＣカードの一例を、第２図（ａ）、第２図（ｂ
）に示す。第２図（ａ）は、従来のＩＣカードの外形を
示す斜視図である。同図において、ＩＣカードの幅と長
さは、それぞれト０冨、８５ｍのクレジットカードと同
等の寸法とする。ＩＣカードの厚さは、いろいろとある
が、この例ではメス型コネクタを短辺方向に配置し、金
属のケースを用いる為、３ｍと比較的厚い寸法となって
いる。Examples of conventional IC cards are shown in Figures 2(a) and 2(b).
). FIG. 2(a) is a perspective view showing the external shape of a conventional IC card. In the figure, the width and length of the IC card are equivalent to a credit card with a width of 0.0 m and a length of 85 m, respectively. There are various thicknesses of IC cards, but in this example, the female connector is arranged along the short side and a metal case is used, so it is relatively thick at 3 m.
第２図（ｂ）は、このＩＣカードの内部構成を分解して
示す斜視図である。同図において、金属ケース（例えば
ステンレス製）１１．絶縁性シート（例えば高分子樹脂
製）１２．複数のＩＣＩ ７が搭載されたプリント基板
１５．この基板１５に接続するメス型コネクタ１６が示
されている。同図に示される様に、メス型コネクタ１６
は、プリン上基板１５に半田付けされている。FIG. 2(b) is an exploded perspective view showing the internal structure of this IC card. In the figure, a metal case (for example, made of stainless steel) 11. Insulating sheet (for example, made of polymer resin) 12. Printed circuit board 15 on which multiple ICIs 7 are mounted. A female connector 16 is shown that connects to this board 15. As shown in the figure, a female connector 16
is soldered to the printed circuit board 15.
この種のＩＣカードは、ＯＡ機器等とデータの授受を行
なうことが可能であるが、通常はデータを保持した状態
で、保管されるが、成るいは使用者によシ持ち歩かれる
。従って、この種のＩＣカードは種々の温度・湿度条件
下にさらされることがわかる。特に湿度の低い環境下に
於ては、静電気によるＩＣカード内のデータ破壊、成る
いはＩＣカード内の搭載ＩＣ自体の破壊と言う問題が発
生する。Although this type of IC card is capable of exchanging data with OA equipment and the like, it is usually stored in a state where it retains data, or is carried around by the user. Therefore, it can be seen that this type of IC card is exposed to various temperature and humidity conditions. Particularly in environments with low humidity, a problem arises in that static electricity destroys the data in the IC card or destroys the IC mounted in the IC card itself.
とζろで、従来例のＩＣカードに於て、金属ケース１１
ｋ静電気が徐々に帯電されると、やがて金属ケース１１
とプリント基板１５内の金属配線部分との間に放電が起
こる。かかる金属配線部分は、カード内のＩＣへの信号
配線又は電源、ＧＮＤ配線である為、仁の様な放電の結
果、ＩＣ自体の破壊、又は放電の起きた配線上の信号レ
ベルの変化に伴なうＩＣ内のデータ破壊が発生する。In the conventional IC card, the metal case 11
When the static electricity is gradually charged, the metal case 11
A discharge occurs between the metal wiring portion and the printed circuit board 15. Since such metal wiring is the signal wiring, power supply, and GND wiring for the IC in the card, the IC itself may be destroyed as a result of the electric discharge, or the signal level on the wiring where the discharge has occurred may change. Otherwise, data in the IC will be destroyed.
本発明の目的は、前記問題点が解決され、放電現象を防
止し、集積回路素子が破壊せず、データのクリア事故等
が発生しないようにしたＩＣカードを提供することに４
る。An object of the present invention is to provide an IC card that solves the above-mentioned problems, prevents discharge phenomena, prevents integrated circuit elements from being destroyed, and prevents data clearing accidents from occurring.
Ru.
本発明の構成は、１個又は複数のＩＣを実装したプリン
ト基板を、金属ケース内に収納したＩＣカードに於て、
プリント基板と金属ケースとの間に、絶縁性フィルム、
導電性フィルム、絶縁性フィルムをこの順番で重ねた三
重フィルム構造を設け、導電性フィルムとプリント基板
上の専用電極とを電気的に接続し、専用電極とプリント
基板上の電気回路に於ける電源配線又はＧＮＤ配線との
間を１ｋΩ以上の抵抗器を介して電気的に接続したこと
を特徴とする。The structure of the present invention is an IC card in which a printed circuit board on which one or more ICs are mounted is housed in a metal case.
An insulating film is placed between the printed circuit board and the metal case.
A triple film structure is provided in which a conductive film and an insulating film are stacked in this order, and the conductive film and the dedicated electrode on the printed circuit board are electrically connected, and the power supply for the dedicated electrode and the electric circuit on the printed circuit board is established. It is characterized in that it is electrically connected to the wiring or GND wiring via a resistor of 1 kΩ or more.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の第１の実施例＋２＞ＩＣカードを示す
斜視図である。同図において、本実施例のＩＣカードは
、従来例と同様な一対の金属ケース１１と、一対の絶縁
性シート１２と、メス型コネクタ１６を有し複数のＩＣ
１７が搭載されたプリント基板１５とを含む。さらに本
実施例は、前述の従来例と異なる部品、即ち一対の導電
性フィルム（例えば導電性樹脂）１３．一対の絶縁性フ
ィルム１４を追加し、また導電性フィルム１３の一端と
プリント基板１５上に設けられた専用電極１０２とを、
導電材（例えば、銅線）１０１ｋより電気的に接続し、
前記専用電極１０２とプリント基板１５上の電源又はＧ
ＮＤ配線１０４とを抵抗器１０３で結線した。ここで、
専用電極１０２は、プリント基板１５０表面及び裏面に
形成され、両者はスルーホールによシミ気的にシ１−ト
されている。又、導電材１０１は、第１図に示されるも
のよシ、実際には十分短かくすることが可能である。FIG. 1 is a perspective view showing a first embodiment +2>IC card of the present invention. In the figure, the IC card of this embodiment has a pair of metal cases 11 similar to the conventional example, a pair of insulating sheets 12, and a female connector 16, and has a plurality of IC cards.
17 is mounted on the printed circuit board 15. Furthermore, this embodiment includes parts different from the conventional example described above, namely a pair of conductive films (for example, conductive resin) 13. A pair of insulating films 14 are added, and one end of the conductive film 13 and a dedicated electrode 102 provided on the printed circuit board 15 are connected.
Electrically connected from a conductive material (for example, copper wire) 101k,
The dedicated electrode 102 and the power supply or G on the printed circuit board 15
It was connected to the ND wiring 104 using a resistor 103. here,
The dedicated electrodes 102 are formed on the front and back surfaces of the printed circuit board 150, and both are airtightly sheeted into through holes. Also, the conductive material 101 can actually be made much shorter than that shown in FIG.
今、本実施例のＩＣカードに於て、金属ケース１１ｋ静
電気を徐々に帯電していくと、やがて金属ケース１１と
導電性フィルム１３との間に放電が起こる。放電に伴な
い、導電性フィルム１３上で放電箇所を中心にして電流
が流れるが、導電性フィルム１３０層抵抗を適当に大き
な値に設定するととＫよシ、放電電流を実効的に放電箇
所の近傍領域内でしか流れない様にすることができる。Now, in the IC card of this embodiment, when the metal case 11k is gradually charged with static electricity, discharge occurs between the metal case 11 and the conductive film 13. As the discharge occurs, a current flows on the conductive film 13 centering on the discharge point, but if the resistance of the conductive film 130 layer is set to an appropriately large value, the discharge current can be effectively reduced to the discharge point. It can be made to flow only within a nearby area.
即ち、放電エネルギは導電性フィルム１３上の放電箇所
の近傍領域の抵抗体にて熱エネルギに変換されると考え
ることができる。従って、金属ケース１１ｋ与えられた
静電気に、必ず導電性フィルム１３上へ放電し、しかも
導電性フィルム１３内にてエネルギ消費されるので、プ
リント基板１５上の搭載ＩＣ及び回路配線への静電気に
よる影響が防止されることがわかる。That is, it can be considered that the discharge energy is converted into thermal energy by the resistor in the vicinity of the discharge location on the conductive film 13. Therefore, the static electricity applied to the metal case 11k is always discharged onto the conductive film 13, and the energy is consumed within the conductive film 13, so that the effect of static electricity on the mounted IC and circuit wiring on the printed circuit board 15 is reduced. It can be seen that this can be prevented.
尚、抵抗器１０３は、導電性フィルム１３とプリント基
板１５との間の静電気による放電を防止する為の抵抗器
で１例えば１０にΩに設定される。Note that the resistor 103 is a resistor for preventing discharge due to static electricity between the conductive film 13 and the printed circuit board 15, and is set to 1, for example, 10 Ω.
外被の金属ケース１１と異なシ、導電性フィルム１３、
プリント基板１５には静電気の帯電は少ないと考えられ
るが、徐々に帯電されていく状況も考えられるので、抵
抗器１０３を設けることがよシ好ましい。A conductive film 13, which is different from the outer metal case 11,
Although it is thought that the printed circuit board 15 is not charged with static electricity, it is possible that the printed circuit board 15 is gradually charged with static electricity, so it is more preferable to provide the resistor 103.
以上の様に、本実施例のＩＣカードは、前述の従来の欠
点であった、金属ケースとプリント基板上の回路配線と
の間の静電気放電によるＩＣカード内のデータ破壊、ま
たはＩＣ自体の破壊を防止することができ、従来例に比
べて静電耐圧を著しく向上させることができる。As described above, the IC card of this embodiment has the above-mentioned conventional drawbacks such as destruction of data in the IC card or destruction of the IC itself due to electrostatic discharge between the metal case and the circuit wiring on the printed circuit board. can be prevented, and the electrostatic withstand voltage can be significantly improved compared to the conventional example.
次に本発明の第２の実施例のＩＣカードを説明する。本
発明の第２の実施例では、前述の第１の実施例における
抵抗器１０３を、プリント基板１５上に形成された１０
にΩ印刷抵抗体（図示せず）として構成される。この印
刷抵抗の使用によシ、プリント基板上に抵抗器が占有す
る面積が従来よシ減少し、ｔたコストダウンが実現でき
、かつ第１の実施例と同様に高い静電耐圧を実現するこ
とができる。Next, an IC card according to a second embodiment of the present invention will be explained. In a second embodiment of the present invention, the resistor 103 in the first embodiment described above is replaced with a resistor 103 formed on a printed circuit board 15.
is configured as an Ω printed resistor (not shown). By using this printed resistor, the area occupied by the resistor on the printed circuit board is reduced compared to the conventional one, making it possible to achieve a significant cost reduction, and to achieve high electrostatic withstand voltage as in the first embodiment. be able to.
前述の各実施例では、導電性フィルム及び絶縁性フィル
ムはそれぞれ表面用と裏面用の２枚ずつで構成されてい
たが、本発明によれば、フレキシブルな材質のフィルム
を用いることによシ、それぞれ１枚のフィルムを用いて
、プリント基板を二重、三重に包み込んだ構造とするこ
ともできる。In each of the above embodiments, the conductive film and the insulating film were each composed of two sheets, one for the front surface and one for the back surface, but according to the present invention, by using films made of flexible material, It is also possible to have a structure in which the printed circuit board is wrapped double or triple by using one film for each.
以上説明した様に、本発明は、金属ケースとプリント基
板との間に導電性フィルムを設けることによシ、静電気
による金属ケースとプリント基板上の回路配線との間の
直接放電を防止し、かつ導電性フィルムとプリント基板
上の電源又はＧＮＤ配線を抵抗器を介して電気的に接続
することによシ、静電気による、導電性フィルムとプリ
ント基板上の回路配線の間の放電を防止することによっ
て、従来のＩＣカードに比べて静電耐圧を著しく向上さ
せる効果がある。As explained above, the present invention prevents direct discharge between the metal case and the circuit wiring on the printed circuit board due to static electricity by providing a conductive film between the metal case and the printed circuit board, And, by electrically connecting the conductive film and the power supply or GND wiring on the printed circuit board through a resistor, it is possible to prevent discharge between the conductive film and the circuit wiring on the printed circuit board due to static electricity. This has the effect of significantly improving electrostatic withstand voltage compared to conventional IC cards.
第１図は本発明の第１の実施例のＩＣカードを分解して
示す斜視図、第２図（ａ）は従来のＩＣカードの斜視図
、第２図（ｂ）は第２図（ａ）のＩＣカードの内部構成
を分解して示す斜視図である。
１１−・・金属ケース、１２．１４・・・絶縁性フィル
ム、１３・・・導電性フィルム、１５・・・プリント基
板、１６・・・メス型コネクタ、１７・・・ＩＣ，１０
１・・・導電材、１０２・・・専用電極、１０３・・・
抵抗器、１０４・・・電源又は接地（ＧＮＤ）配線。
代理人 弁理士 内 原 晋FIG. 1 is an exploded perspective view of an IC card according to a first embodiment of the present invention, FIG. 2(a) is a perspective view of a conventional IC card, and FIG. 2(b) is a perspective view of a conventional IC card. ) is an exploded perspective view showing the internal structure of the IC card. 11- Metal case, 12.14 Insulating film, 13 Conductive film, 15 Printed circuit board, 16 Female connector, 17 IC, 10
1... Conductive material, 102... Dedicated electrode, 103...
Resistor, 104...Power supply or ground (GND) wiring. Agent Patent Attorney Susumu Uchihara
Claims (2)
ケース内に収納したＩＣカードに於て、前記プリント基
板と前記金属ケースの間に、第１の絶縁性フィルム、導
電性フィルム、第２の絶縁性フィルムをこの順番で重ね
た三重フィルム構造を設け、前記導電性フィルムと前記
プリント基板上の専用電極とを電気的に接続し、前記専
用電極と前記プリント基板上の電気回路に於ける電源配
線又は接地配線との間を１ｋΩ以上の抵抗体を介して電
気的に接続したことを特徴とするＩＣカード。(1) In an IC card in which a printed circuit board on which an integrated circuit element is mounted is housed in a metal case, a first insulating film, a conductive film, and a second insulating film are disposed between the printed circuit board and the metal case. A triple film structure is provided in which insulating films are stacked in this order, the conductive film and the dedicated electrode on the printed circuit board are electrically connected, and the power source for the dedicated electrode and the electric circuit on the printed circuit board is provided. An IC card characterized in that it is electrically connected to wiring or ground wiring via a resistor of 1 kΩ or more.
抗体である特許請求の範囲第１項記載のＩＣカード。(2) The IC card according to claim 1, wherein the resistor is a printed resistor formed on a printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62259019A JPH06438B2 (en) | 1987-10-13 | 1987-10-13 | IC card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62259019A JPH06438B2 (en) | 1987-10-13 | 1987-10-13 | IC card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199893A true JPH0199893A (en) | 1989-04-18 |
| JPH06438B2 JPH06438B2 (en) | 1994-01-05 |
Family
ID=17328222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62259019A Expired - Fee Related JPH06438B2 (en) | 1987-10-13 | 1987-10-13 | IC card |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06438B2 (en) |
-
1987
- 1987-10-13 JP JP62259019A patent/JPH06438B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06438B2 (en) | 1994-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |