JP2005284352A - Portable electronic equipment - Google Patents
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- JP2005284352A JP2005284352A JP2004093022A JP2004093022A JP2005284352A JP 2005284352 A JP2005284352 A JP 2005284352A JP 2004093022 A JP2004093022 A JP 2004093022A JP 2004093022 A JP2004093022 A JP 2004093022A JP 2005284352 A JP2005284352 A JP 2005284352A
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Abstract
Description
本発明は、例えば、定期券や証明カード等として適用される無線カード等の携帯可能電子装置に関する。 The present invention relates to a portable electronic device such as a wireless card applied as a commuter pass or a certification card.
この種の無線カードとしては、例えば、図4及び図5に示すようなものが知られている。 As this type of wireless card, for example, those shown in FIGS. 4 and 5 are known.
即ち、図中101は無線カードKのカード基板で、このカード基板101の表面側には電子部品としてのLSI102及びアンテナパタン103さらに、コンデンサ電極104が配設されている。また、カード基板101の裏面側にはコンデンサ電極105が設けられている。
That is,
カード基板101、LSI102、アンテナパタン103、コンデンサ電極104,105は、例えば、塩化ビニルやPET−G等の樹脂製の表面シート106と裏面シート107とにより被覆されている。表面シート106と裏面シート107との間には絶縁性の充填材109が充填されている(例えば、特許文献1参照。)。
The
ところで、上記したように構成される無線カードKは外部との接触端子がなく、また、その表裏面が樹脂製のシート106,107によって被覆されるため、比較的、耐静電気は高い。
しかしながら、従来においては、無線カードKに対して表面及び裏面のシート106,107の耐圧を超える静電気が印加された場合、図5に示すように静電気が表面及び裏面のシート106,107を貫通して内部の電気回路(アンテナパターン103、コンデンサ電極104,105、LSI102)にスパークしてLSI102が破壊されてしまう虞があった。
However, conventionally, when static electricity exceeding the withstand voltage of the front and
本発明は、上記事情に着目してなされたもので、その目的とするところは、被覆材の耐圧を超える静電気が印加された場合でも、LSIが破壊されることのないようにした携帯可能電子装置を提供することを目的とする。 The present invention has been made by paying attention to the above circumstances, and the purpose of the present invention is to carry portable electronic devices that prevent destruction of LSI even when static electricity exceeding the withstand voltage of the covering material is applied. An object is to provide an apparatus.
上記課題を解決するため、請求項1記載のものは、アンテナと、このアンテナを介して外部装置との間で信号の授受を行うLSIと、前記アンテナ、及びLSIを被覆する被覆材と、この被覆材と前記アンテナ及びLSIとの間に充填される絶縁性の充填材と、前記アンテナ及びLSIと前記被覆材との間を仕切るように設けられた導体とを具備することを特徴とする。
In order to solve the above-described problem, an object described in
請求項6記載のものは、アンテナと、このアンテナを介して外部装置との間で信号の授受を行うLSIと、前記アンテナ及びLSIを配置する基板と、この基板に配置された前記アンテナ及びLSIを被覆する被覆材と、この被覆材と前記アンテナ及びLSIとの間に充填される絶縁性の充填材と、前記アンテナ及びLSIと前記被覆材との間を仕切るように設けられた導体とを具備することを特徴とする。 According to a sixth aspect of the present invention, there is provided an antenna, an LSI for transmitting / receiving a signal to / from an external device via the antenna, a substrate on which the antenna and the LSI are disposed, and the antenna and LSI disposed on the substrate. A covering material that covers the antenna, an insulating filler filled between the antenna and the LSI, and a conductor provided so as to partition the antenna, the LSI, and the covering material. It is characterized by comprising.
本発明によれば、アンテナ及びコンデンサさらにLSIへの静電気のスパークを防止でき、静電気によるLSIの破壊を防止できる。 According to the present invention, it is possible to prevent static electricity from sparking to the antenna, the capacitor, and the LSI, and to prevent destruction of the LSI due to static electricity.
以下、本発明を図面に示す実施の形態を参照して詳細に説明する。
図1は、本発明の一実施の形態である無線カードKを示す平面図で、図2はその縦断側面図である。
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is a plan view showing a wireless card K according to an embodiment of the present invention, and FIG. 2 is a longitudinal side view thereof.
無線カードKはカード基材1を有し、このカード基板1の材料としては、例えば、厚さ0.038mmのポリエチレンテレフタレート(以下、PETという)が用いられる。このカード基板1の表面側には電子部品としてのLSI3が実装されているとともに、アンテナパタン4が設けられている。
The wireless card K has a
LSI3は、基板1にフリップチップ方式で実装されるインレットとされている。アンテナパタン4は例えば、厚さ0.3mmのアルミニューム箔をエッチングして形成される。
The
カード基板1にはコンデンサ電極6,7が設けられ、これらコンデンサ電極6,7は、誘電体であるPET製のカード基板1をアルミニュームパターンで挟むことにより静電容量を持ち、この実施の形態では、電極面積4mm×10mmで、約10PFの容量となっている。
上記LSI3は、図3に示すようにコンデンサ電極6,7を介してアンテナパタン4に電気的に接続されている。
The
カード基板1、LSI3及びアンテナパタン4、さらに、コンデンサ電極6,7は、被覆材としての表面シート10と裏面シート11とにより被覆されている。表面シート10と裏面シート11としては、厚さ0.075mmのPETシートが用いられる。表面シート10と裏面シート11との間には絶縁性の充填材12が充填されている。表、裏面のシート10,11と充填材12とは真空ホットプレスにより一体化されたのち、カード状に打ち抜かれてカード化される。
The
また、表面シート10と裏面シート11の内側にはそれぞれ本発明の要部に係わる導体としての導電層13,14が設けられている。表面シート10側の導電層13は、コンデンサ電極6及びアンテナパタン4に対向され、裏面シート11側の導電層14は、コンデンサ電極7に対向されている。
Further,
導電層13,14は、例えば、アルミニューム粒子を多く含むインクや、銀ペーストにより印刷されて形成されている。
The
なお、導電層13,14は、表裏シート10,11の内側に、アルミニューム箔や、銅箔などの金属箔をエッチングまたは、型抜きすることにより形成するようにしてもよい。
The
このように構成される無線カードKは、カード外部から供給される電波を電力に変換してLSI3を動作させ、残りの電力でレスポンスを返して非接触でデータ通信を可能とする。
ところで、上記無線カードKにはその表裏のシート10,11の耐圧を超える静電気が印加されることがある。この静電気は表裏シート10,11を貫通して内部のコンデンサ電極6,7やアンテナパタン4にスパークしてLSI3を破壊してしまう虞がある。
The wireless card K configured in this manner converts radio waves supplied from the outside of the card into electric power, operates the
By the way, static electricity exceeding the withstand voltage of the front and
しかしながら、この実施の形態においては、上記したように、表裏のシート10,11に、導電層13,14をコンデンサ電極6,7及びアンテナパタン4さらに、LSI3に対向する状態で設けるため、表裏のシート10,11に印加される静電気は導電層13,14により受けられる。これにより、アンテナパタン4や、コンデンサ電極6,7への静電気のスパークが防止され、LSI3を破壊することがない。
However, in this embodiment, as described above, the
上記したように、この実施の形態によれば、表裏のシート10,11の耐圧を超える静電気が印加されても、LSI3を破壊することがないという利点を得ることができる。
As described above, according to this embodiment, it is possible to obtain an advantage that the
なお、本発明は、上記一実施の形態に限られることなく、その要旨の範囲内で種々変形実施可能なことは勿論である。 Of course, the present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the gist thereof.
2…カード基板(基板)、3…LSI、4…アンテナパターン(アンテナ)、6,7…コンデンサ電極(コンデンサ)、10…表面シート(被覆材)、11…裏面シート(被覆材)、12…充填材、13,14…導電層(導体)。 2 ... Card substrate (substrate), 3 ... LSI, 4 ... Antenna pattern (antenna), 6, 7 ... Capacitor electrode (capacitor), 10 ... Top sheet (covering material), 11 ... Back sheet (covering material), 12 ... Filler, 13, 14... Conductive layer (conductor).
Claims (7)
このアンテナを介して外部装置との間で信号の授受を行うLSIと、
前記アンテナ、及びLSIを被覆する被覆材と、
この被覆材と前記アンテナ及びLSIとの間に充填される絶縁性の充填材と、
前記アンテナ及びLSIと前記被覆材との間を仕切るように設けられた導体と
を具備することを特徴とする携帯可能電子装置。 An antenna,
An LSI that transmits and receives signals to and from an external device via this antenna;
A covering material for covering the antenna and LSI;
An insulating filler filled between the covering material and the antenna and LSI;
A portable electronic device comprising: a conductor provided so as to partition the antenna and the LSI and the covering material.
このアンテナを介して外部装置との間で信号の授受を行うLSIと、
前記アンテナ及びLSIを配置する基板と、
この基板に配置された前記アンテナ及びLSIを被覆する被覆材と、
この被覆材と前記アンテナ及びLSIとの間に充填される絶縁性の充填材と、
前記アンテナ及びLSIと前記被覆材との間を仕切るように設けられた導体と
を具備することを特徴とする携帯可能電子装置。 An antenna,
An LSI that transmits and receives signals to and from an external device via this antenna;
A substrate on which the antenna and the LSI are arranged;
A covering material for covering the antenna and LSI disposed on the substrate;
An insulating filler filled between the covering material and the antenna and LSI;
A portable electronic device comprising: a conductor provided so as to partition the antenna and the LSI and the covering material.
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