JP2006190181A

JP2006190181A - Information terminal device and production method for information terminal device

Info

Publication number: JP2006190181A
Application number: JP2005002797A
Authority: JP
Inventors: Kiyoshi Toyoda; 潔豊田
Original assignee: Olympus Corp
Current assignee: Olympus Corp
Priority date: 2005-01-07
Filing date: 2005-01-07
Publication date: 2006-07-20

Abstract

<P>PROBLEM TO BE SOLVED: To reduce reduction of an information transmission distance caused by an eddy current generated in an electric conductor. <P>SOLUTION: This information terminal device 1 has: an antenna 2a formed with a coil-like antenna pattern on a flexible printed circuit board or the like; an insulative member 3 formed by molding an insulative and non-magnetic material such as a plastic in a sheet state; a magnetic member 4 formed by molding a magnetic material such as ferrite in a sheet state; a wiring board 5 mounted with various kinds of electronic circuits on the surface; a display device 6a displaying various kinds of information; and a plurality of input buttons 7a protruding from a casing upper face part. The antenna 2a, the insulative member 3, the magnetic member 4, the wiring board 5 and the display device 6a are sequentially disposed from a bottom face part inside a casing. The antenna 2a, the insulative member 3 and the magnetic member 4 are disposed while being overlapped so as to be sequentially layered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、情報記憶媒体に対して非接触に情報処理を行う情報端末装置および情報端末装置の製造方法に関し、特に情報記憶媒体の情報を読み取る情報読取処理および情報記憶媒体に情報を書き込む情報書込処理を行う情報端末装置および情報端末装置の製造方法に関するものである。 The present invention relates to an information terminal device that performs information processing on an information storage medium in a non-contact manner, and a method for manufacturing the information terminal device, and more particularly to an information reading process for reading information from an information storage medium and an information document for writing information to an information storage medium. The present invention relates to an information terminal device that performs a loading process and a method of manufacturing the information terminal device.

近年、無線通信による情報処理システムの１つであるＲＦＩＤ（Radio Frequency Identification）システムが、入退室管理、物品管理等に利用されている。このＲＦＩＤシステムでは、識別情報等を記憶するＲＦＩＤタグを管理対象に取り付け、情報端末装置がＲＦＩＤタグに対して所定周波数の電波を用いて情報読取処理および情報書込処理を行うことによって管理対象を管理する。 In recent years, an RFID (Radio Frequency Identification) system, which is one of information processing systems using wireless communication, is used for entrance / exit management, article management, and the like. In this RFID system, an RFID tag that stores identification information or the like is attached to a management target, and the information terminal device performs information reading processing and information writing processing on the RFID tag using radio waves of a predetermined frequency. to manage.

通常、ＲＦＩＤシステムの情報端末装置は、１ターン以上のループ状もしくはコイル状のアンテナを備え、このアンテナによってＲＦＩＤタグに対する電波の送受信を行っている。ところが、アンテナの近傍に金属がある場合、アンテナで発生した磁束が金属に錯交することによって金属内に渦電流が発生し、この渦電流による磁界がアンテナで発生した磁界を打ち消すことによって、情報端末装置のＲＦＩＤタグに対する情報読取距離および情報書込距離である情報伝送距離が短くなり、さらには情報伝送距離がなくなるという問題があった。この問題を解決するため、アンテナと金属との間に磁性体を配置した情報端末装置が提案されている（たとえば、特許文献１，２，４，５参照）。また、アンテナを有するＲＦＩＤタグについても同様の問題があり、この問題を解決するため、アンテナと金属との間に磁性体を配置したＲＦＩＤタグが提案されている（たとえば、特許文献３参照）。 Usually, an information terminal device of an RFID system is provided with a loop-shaped or coil-shaped antenna having one or more turns, and radio waves are transmitted to and received from the RFID tag using this antenna. However, when there is a metal near the antenna, the magnetic flux generated by the antenna intermixes with the metal to generate an eddy current in the metal, and the magnetic field generated by the eddy current cancels the magnetic field generated by the antenna, thereby providing information. There has been a problem that the information transmission distance which is the information reading distance and the information writing distance with respect to the RFID tag of the terminal device is shortened, and further the information transmission distance is eliminated. In order to solve this problem, an information terminal device in which a magnetic material is disposed between an antenna and a metal has been proposed (see, for example, Patent Documents 1, 2, 4, and 5). Further, the RFID tag having an antenna has the same problem, and in order to solve this problem, an RFID tag in which a magnetic material is disposed between the antenna and a metal has been proposed (for example, see Patent Document 3).

これらの情報端末装置およびＲＦＩＤタグは、高い透磁率を有するフェライト等の磁性体に磁束が集中する特性を利用し、アンテナと金属との間に磁性体を配置することによって、アンテナで発生する磁束が金属に錯交しないようにし、あるいは錯交する磁束が減少するようにして情報伝送距離の減小を軽減するようにしている。 These information terminal devices and RFID tags utilize the property that magnetic flux concentrates on a magnetic material such as ferrite having a high magnetic permeability, and magnetic flux generated in an antenna by arranging the magnetic material between the antenna and metal. Is prevented from intermingling with metal, or the magnetic flux intermingled is reduced so as to reduce the decrease in the information transmission distance.

特開２００３−１０８９６６号公報JP 2003-108966 A 特開２００４−３８５５２号公報JP 2004-38552 A 特開２００４−１６６１７５号公報JP 2004-166175 A 特開２００３−９９７３３号公報JP 2003-99733 A 特開２００４−８６６５４号公報JP 2004-86654 A

ところで、近年、ＲＦＩＤシステムの利便性を促進するため、情報端末装置の小型化の要求が高まっている。しかし、情報端末装置を小型化すると、内部の配線基板、スイッチ、表示装置等に組み込まれた金属部品がアンテナ近傍に配置されることになり、この金属部品に発生する渦電流に起因して、情報端末装置の情報伝送距離が短くなり、さらには情報伝送距離がなくなるという問題がある。この場合も、上述したように、アンテナと金属との間に磁性体を配置することによって情報伝送距離の減小を軽減することはできるが、近傍に金属がない場合と比較して十分な情報伝送距離を確保できるものではなく、所望の情報伝送距離が得られない場合が生じ、結果的に所望の通信ができない場合が生ずるという問題があった。 By the way, in recent years, in order to promote the convenience of the RFID system, there is an increasing demand for downsizing of the information terminal device. However, when the information terminal device is downsized, metal parts built in the internal wiring board, switch, display device, etc. will be placed near the antenna, and due to the eddy current generated in this metal part, There is a problem that the information transmission distance of the information terminal device is shortened and further the information transmission distance is lost. Also in this case, as described above, it is possible to reduce the reduction in the information transmission distance by arranging a magnetic body between the antenna and the metal, but sufficient information compared with the case where there is no metal in the vicinity. There is a problem in that a transmission distance cannot be secured and a desired information transmission distance cannot be obtained, and as a result, a desired communication cannot be performed.

本発明は、上記に鑑みてなされたものであって、装置の小型化等にともなって情報端末装置のアンテナ近傍に金属等の電気導体を配置する場合、この電気導体に発生する渦電流に起因した情報伝送距離の減小を一層軽減することができ、確実に所望の情報伝送距離を得ることができる情報端末装置および情報端末装置の製造方法を提供することを目的とする。 The present invention has been made in view of the above, and when an electric conductor such as a metal is disposed in the vicinity of an antenna of an information terminal device due to downsizing of the apparatus or the like, the present invention is caused by an eddy current generated in the electric conductor. It is an object of the present invention to provide an information terminal device and a method of manufacturing the information terminal device that can further reduce the reduction in the information transmission distance and can reliably obtain a desired information transmission distance.

上記の目的を達成するために、請求項１にかかる情報端末装置は、情報記憶媒体に対して非接触に情報処理を行う情報端末装置において、前記情報記憶媒体との間で情報の伝送を行うアンテナと、当該情報端末装置内に存在する電気導体と前記アンテナとの間に配置され、磁性を有した磁性部材と、前記電気導体と前記アンテナとの間に配置され、非磁性かつ絶縁性を有した絶縁部材と、を備え、前記アンテナと前記磁性部材とに挟まれた第１の層厚をｄ１、前記磁性部材と前記電気導体とに挟まれた第２の層厚をｄ２としたとき、ｄ１＞ｄ２なる関係を満たすことを特徴とする。 In order to achieve the above object, an information terminal device according to claim 1 transmits information to and from the information storage medium in an information terminal device that performs information processing without contact with the information storage medium. Arranged between the antenna, the electric conductor present in the information terminal device and the antenna, and is disposed between the magnetic member having magnetism, the electric conductor and the antenna, and is non-magnetic and insulating. A first layer thickness sandwiched between the antenna and the magnetic member is d1, and a second layer thickness sandwiched between the magnetic member and the electrical conductor is d2. , D1> d2 is satisfied.

また、請求項２にかかる情報端末装置は、外部情報端末装置によって非接触に情報処理が行われる情報記憶媒体を内蔵した情報端末装置において、前記情報記憶媒体に接続され、前記外部情報端末装置との間で情報の伝送を行うアンテナと、当該情報端末装置内に存在する電気導体と前記アンテナとの間に配置され、磁性を有した磁性部材と、前記電気導体と前記アンテナとの間に配置され、非磁性かつ絶縁性を有した絶縁部材と、を備え、前記アンテナと前記磁性部材とに挟まれた第１の層厚をｄ１、前記磁性部材と前記電気導体とに挟まれた第２の層厚をｄ２としたとき、ｄ１＞ｄ２なる関係を満たすことを特徴とする。 An information terminal device according to claim 2 is an information terminal device including an information storage medium in which information processing is performed in a non-contact manner by the external information terminal device, and is connected to the information storage medium, Between the antenna for transmitting information between the electric conductor, the electric conductor existing in the information terminal device and the antenna, and between the electric conductor and the antenna. A non-magnetic and insulating member, a first layer thickness sandwiched between the antenna and the magnetic member is d1, and a second layer sandwiched between the magnetic member and the electrical conductor When the layer thickness is d2, the relationship d1> d2 is satisfied.

また、請求項３にかかる情報端末装置は、上記の発明において、前記絶縁部材は、前記アンテナによって前記情報の伝送を行うことができる情報伝送距離が所定値以上もしくは所定範囲内に入る厚さに設定されることを特徴とする。 According to a third aspect of the present invention, there is provided the information terminal device according to the above invention, wherein the insulating member has a thickness that allows an information transmission distance at which the information can be transmitted by the antenna to be greater than or equal to a predetermined value or within a predetermined range. It is characterized by being set.

また、請求項４にかかる情報端末装置は、上記の発明において、前記絶縁部材は、非磁性かつ絶縁性を有した複数層によって形成されることを特徴とする。 The information terminal device according to claim 4 is characterized in that, in the above invention, the insulating member is formed of a plurality of nonmagnetic and insulating layers.

また、請求項５にかかる情報端末装置は、上記の発明において、前記絶縁部材は、それぞれ非磁性かつ絶縁性を有した接着剤、接着剤と基材、粘着材、または粘着材と基材によって形成されることを特徴とする。 The information terminal device according to claim 5 is the information terminal device according to the invention, wherein the insulating member is made of a non-magnetic and insulating adhesive, an adhesive and a base, an adhesive, or an adhesive and a base. It is formed.

また、請求項６にかかる情報端末装置は、上記の発明において、前記磁性部材は、前記電気導体と対向する面に、金属シートもしくは金属板を有することを特徴とする。 The information terminal device according to claim 6 is characterized in that, in the above invention, the magnetic member has a metal sheet or a metal plate on a surface facing the electric conductor.

また、請求項７にかかる情報端末装置は、上記の発明において、前記磁性部材は、前記電気導体と対向する面に、接着剤もしくは粘着剤によって、前記金属シートもしくは金属板を接着して有することを特徴とする。 Further, in the information terminal device according to claim 7, in the above invention, the magnetic member has the metal sheet or the metal plate bonded to the surface facing the electric conductor with an adhesive or an adhesive. It is characterized by.

また、請求項８にかかる情報端末装置の製造方法は、情報記憶媒体に対して非接触に情報処理を行う情報端末装置の製造方法において、前記情報記憶媒体との間で情報の伝送を行うアンテナを配置するアンテナ配置工程と、当該情報端末装置内に存在する電気導体と前記アンテナとの間に、磁性を有した磁性部材を配置する磁性部材配置工程と、前記電気導体と前記アンテナとの間に、非磁性かつ絶縁性を有した絶縁部材を配置する絶縁部材配置工程と、を含み、前記磁性部材配置工程は、前記アンテナと前記磁性部材とに挟まれた第１の層厚をｄ１、前記磁性部材と前記電気導体とに挟まれた第２の層厚をｄ２としたとき、ｄ１＞ｄ２なる関係を満たすように前記磁性部材を配置することを特徴とする。 An information terminal device manufacturing method according to claim 8 is an information terminal device manufacturing method that performs information processing in a non-contact manner with respect to the information storage medium, and an antenna that transmits information to and from the information storage medium. An antenna arranging step of arranging the magnetic member, a magnetic member arranging step of arranging a magnetic member having magnetism between the electric conductor existing in the information terminal device and the antenna, and between the electric conductor and the antenna An insulating member disposing step of disposing a nonmagnetic insulating member, wherein the magnetic member disposing step sets a first layer thickness sandwiched between the antenna and the magnetic member to d1, When the second layer thickness sandwiched between the magnetic member and the electric conductor is d2, the magnetic member is arranged so as to satisfy the relationship d1> d2.

また、請求項９にかかる情報端末装置の製造方法は、外部情報端末装置によって非接触に情報処理が行われる情報記憶媒体を内蔵した情報端末装置の製造方法において、前記情報記憶媒体に接続され、前記外部情報端末装置との間で情報の伝送を行うアンテナを配置するアンテナ配置工程と、当該情報端末装置内に存在する電気導体と前記アンテナとの間に、磁性を有した磁性部材を配置する磁性部材配置工程と、前記電気導体と前記アンテナとの間に、非磁性かつ絶縁性を有した絶縁部材を配置する絶縁部材配置工程と、を含み、前記磁性部材配置工程は、前記アンテナと前記磁性部材とに挟まれた第１の層厚をｄ１、前記磁性部材と前記電気導体とに挟まれた第２の層厚をｄ２としたとき、ｄ１＞ｄ２なる関係を満たすように前記磁性部材を配置することを特徴とする。 In addition, an information terminal device manufacturing method according to claim 9 is an information terminal device manufacturing method including an information storage medium in which information processing is performed in a non-contact manner by an external information terminal device, and is connected to the information storage medium. An antenna arrangement step of arranging an antenna for transmitting information to and from the external information terminal device, and a magnetic member having magnetism is arranged between the electric conductor existing in the information terminal device and the antenna. A magnetic member disposing step, and an insulating member disposing step of disposing a nonmagnetic insulating member between the electric conductor and the antenna, wherein the magnetic member disposing step includes the antenna and the antenna. When the first layer thickness sandwiched between the magnetic members is d1 and the second layer thickness sandwiched between the magnetic members and the electrical conductor is d2, the magnetic part satisfies the relationship d1> d2. Characterized by arranging the.

また、請求項１０にかかる情報端末装置の製造方法は、上記発明において、前記絶縁部材は、前記アンテナによって前記情報の伝送を行うことができる情報伝送距離が所定値以上もしくは所定範囲内に入る厚さに設定されることを特徴とする。 According to a tenth aspect of the present invention, there is provided a method for manufacturing an information terminal device according to the above invention, wherein the insulating member has a thickness that allows an information transmission distance at which the information can be transmitted by the antenna to be greater than or equal to a predetermined value or within a predetermined range. It is characterized by being set.

本発明にかかる情報端末装置および情報端末装置の製造方法によれば、装置の小型化等にともなって情報端末装置のアンテナ近傍に金属等の電気導体を配置する場合、この電気導体に発生する渦電流に起因した情報伝送距離の減小を一層軽減することができ、確実に所望の情報伝送距離を得ることができる。 According to the information terminal device and the method of manufacturing the information terminal device according to the present invention, when an electric conductor such as a metal is disposed in the vicinity of the antenna of the information terminal device due to downsizing of the information terminal device, the vortex generated in the electric conductor is generated. Reduction of the information transmission distance due to the current can be further reduced, and a desired information transmission distance can be obtained with certainty.

以下、添付図面を参照して、本発明にかかる情報端末装置の好適な実施の形態を詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。また、図面の記載において、同一部分には同一の符号を付している。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of an information terminal device according to the invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments. In the description of the drawings, the same parts are denoted by the same reference numerals.

（実施の形態１）
まず、本発明の実施の形態１にかかる情報端末装置について説明する。図１および図２は、それぞれこの実施の形態１にかかる情報端末装置の概要構成を示すブロック図および斜視図である。図１に示すように、この実施の形態１にかかる情報端末装置１は、管理対象等に取り付けられた外部情報記憶媒体であるＲＦＩＤタグ８に対して情報読取処理および情報書込処理を行うＲＦＩＤ処理部２と、各種情報を表示する表示部６と、各種情報の入力を受け付ける入力部７と、情報端末装置１の全体の処理および動作を制御する制御部Ｃ１とを備える。ＲＦＩＤ処理部２は、ＲＦＩＤタグ８に対し所定周波数の電波を送受信して情報の伝送を行うアンテナ２ａを備え、ＲＦＩＤタグ８は、同様に、ＲＦＩＤ処理部２に対して電波の送受信を行うアンテナ８ａを備える。ＲＦＩＤ処理部２、表示部６および入力部７は、制御部Ｃ１に電気的に接続され、制御部Ｃ１は、これらの各構成部位を制御する。また、図２に示すように、情報端末装置１は、筐体内部にあって底面部から順次配置されたアンテナ２ａ、絶縁部材３、磁性部材４、配線基板５および表示部６としての表示装置６ａと、入力部７の一部であって筐体上面部に突起した複数の入力ボタン７ａとを備える。アンテナ２ａ、絶縁部材３および磁性部材４は、順次積層されるように重ね合わせて配置される。 (Embodiment 1)
First, the information terminal device according to the first exemplary embodiment of the present invention will be described. FIG. 1 and FIG. 2 are a block diagram and a perspective view, respectively, showing a schematic configuration of the information terminal device according to the first embodiment. As shown in FIG. 1, the information terminal device 1 according to the first embodiment performs an information reading process and an information writing process on an RFID tag 8 that is an external information storage medium attached to a management target or the like. The processing unit 2, a display unit 6 that displays various types of information, an input unit 7 that receives input of various types of information, and a control unit C 1 that controls the overall processing and operation of the information terminal device 1. The RFID processing unit 2 includes an antenna 2a that transmits / receives information by transmitting / receiving radio waves of a predetermined frequency to / from the RFID tag 8, and the RFID tag 8 is similarly an antenna that transmits / receives radio waves to / from the RFID processing unit 2. 8a. The RFID processing unit 2, the display unit 6, and the input unit 7 are electrically connected to the control unit C1, and the control unit C1 controls these components. As shown in FIG. 2, the information terminal device 1 includes a display device as an antenna 2 a, an insulating member 3, a magnetic member 4, a wiring board 5, and a display unit 6 which are arranged inside the casing and sequentially from the bottom surface. 6a and a plurality of input buttons 7a that are part of the input unit 7 and protrude from the upper surface of the housing. The antenna 2a, the insulating member 3 and the magnetic member 4 are arranged so as to be stacked one after another.

アンテナ２ａは、たとえば、硬質プリント配線板、フレキシブルプリント配線板等に１ターン以上のコイル状もしくはループ状のアンテナパターンを形成して実現される。なお、硬質プリント配線板あるいはフレキシブルプリント配線板では、通常、銅箔等の導体層のプリントパターンによってアンテナパターンが形成されるが、エナメル線等によってループを構成するようにしてもよい。また、アンテナパターン形状は、円形、矩形もしくは一部折れ曲がった形状等、任意の形状でよい。なお、情報端末装置１の小型化を図る場合、省スペース化対応および立体的な筐体形状への対応などの点で、硬質プリント配線板よりもフレキシブルプリント配線板の使用が好ましい。 The antenna 2a is realized by, for example, forming a coil-shaped or loop-shaped antenna pattern of one turn or more on a hard printed wiring board, a flexible printed wiring board, or the like. In a hard printed wiring board or a flexible printed wiring board, an antenna pattern is usually formed by a printed pattern of a conductor layer such as a copper foil, but a loop may be formed by an enameled wire or the like. The antenna pattern shape may be any shape such as a circle, a rectangle, or a partially bent shape. When the information terminal device 1 is miniaturized, it is preferable to use a flexible printed wiring board rather than a rigid printed wiring board in terms of space saving and three-dimensional housing shape.

絶縁部材３は、絶縁性かつ非磁性を有したプラスチック等の材料をシート状もしくはプレート状に成形して実現され、磁性部材４は、フェライト等の磁性体をシート状もしくはプレート状に成形して実現される。なお、絶縁部材３は、空間すなわち空気層でもよい。この空間を満たす空気層は、絶縁性および非磁性を有し、絶縁部材３として作用する。また、磁性部材４は、内部に渦電流が発生しないように、さらに絶縁性を有することが望ましく、たとえば、導電性を有した磁性体を材料として用いる場合、この磁性体を粉末状にしてプラスチック等の絶縁材料に混ぜ込み成形することによって、局所的に導電性を有しても、全体として絶縁性を有するように形成することが好ましい。 The insulating member 3 is realized by molding an insulating and non-magnetic material such as plastic into a sheet or plate, and the magnetic member 4 is formed by molding a magnetic material such as ferrite into a sheet or plate. Realized. The insulating member 3 may be a space, that is, an air layer. The air layer that fills this space has insulating properties and nonmagnetic properties, and acts as the insulating member 3. Further, it is desirable that the magnetic member 4 further has an insulating property so that eddy currents are not generated therein. For example, when a magnetic material having conductivity is used as a material, the magnetic material 4 is made into a powder and is made of plastic. It is preferable to form by mixing with an insulating material such as an insulating material so as to have insulating properties as a whole even if it has local conductivity.

配線基板５は、情報端末装置１の機能を実現するためのＩＣチップ、各種電子回路等が表面に実装された回路基板であり、制御部Ｃ１を実現するＣＰＵを動作させる高速クロック等で発生するノイズを低減させるため、たとえば、基板の全面もしくは大部分の面がグランド面である層（グランドプレーン）を有した多層基板を用いて実現される。 The wiring board 5 is a circuit board on which an IC chip and various electronic circuits for realizing the functions of the information terminal device 1 are mounted, and is generated by a high-speed clock or the like that operates the CPU that realizes the control unit C1. In order to reduce noise, for example, it is realized using a multilayer substrate having a layer (ground plane) whose entire surface or most of the substrate is a ground surface.

表示装置６ａは、液晶ディスプレイ、有機ＥＬ（Electroluminescence）ディスプレイ等を用いて実現され、情報読取処理によってＲＦＩＤタグ８から読み取られた情報等、各種情報をディスプレイ上に表示する。なお、表示装置６ａは、入力部７としてのタッチパネルをディスプレイ上に備えるようにしてもよく、この場合、ディスプレイおよびタッチパネルで発生するノイズを低減するため、たとえば、裏面など、表示面以外の表面に薄い金属板（シールド板）が設けられる。 The display device 6a is realized by using a liquid crystal display, an organic EL (Electroluminescence) display, or the like, and displays various information such as information read from the RFID tag 8 by an information reading process on the display. The display device 6a may include a touch panel as the input unit 7 on the display. In this case, in order to reduce noise generated on the display and the touch panel, for example, on the surface other than the display surface such as the back surface. A thin metal plate (shield plate) is provided.

入力ボタン７ａは、情報端末装置１が行う各種処理および動作の指示情報の入力を受け付ける。入力ボタン７ａは、たとえば、外部から押し込まれることによって配線基板５上に配置されたプッシュスイッチ７ｂの金属接点を接続し、所定の処理回路に接続信号を伝送する。 The input button 7a accepts input of instruction information for various processes and operations performed by the information terminal device 1. The input button 7a connects, for example, a metal contact of the push switch 7b disposed on the wiring board 5 by being pushed from the outside, and transmits a connection signal to a predetermined processing circuit.

図３は、アンテナ２ａ、絶縁部材３および磁性部材４を底面側から見た場合の構成を模式的に示す斜視図である。図３に示すように、アンテナ２ａは、図上、上面側であって、情報端末装置１の底面側にコイル状に形成されたアンテナパターン２ａａを有する。電気導体９は、上述した配線基板５のグランドプレーン、表示装置６ａのシールド板、プッシュスイッチ７ｂの金属接点等、情報端末装置１内に存在する電気導体の総体を模式的に示したものである。情報端末装置１では、絶縁部材３および磁性部材４を配置しない場合、この電気導体９に発生する渦電流によってアンテナ２ａで発生する磁界が打ち消され、情報伝送距離が減小する。これに対し、従来は、電気導体９とアンテナ２ａとの間に磁性部材４を配置することによって、情報伝送距離の減小を抑制するようにしていたが、この実施の形態１では、さらに磁性部材４とアンテナ２ａとの間に絶縁部材３を配置することによって、情報伝送距離の減小を一層抑制するようにしている。なお、図３では、アンテナ２ａ、絶縁部材３および磁性部材４が互いに対向する面を同じ大きさで示しているが、必ずしもこの限りではなく、アンテナ２ａの大きさに対して絶縁部材３および磁性部材４の大きさをある程度大きくするか、あるいは小さくするようにしてもよい。また、図３では、磁性部材４と電気導体９との間隔層を空気層としているが、この間隔層に絶縁部材３と同様の絶縁部材を配置するようにしてもよい。 FIG. 3 is a perspective view schematically showing the configuration when the antenna 2a, the insulating member 3, and the magnetic member 4 are viewed from the bottom surface side. As shown in FIG. 3, the antenna 2 a has an antenna pattern 2 aa formed in a coil shape on the upper surface side in the figure and on the bottom surface side of the information terminal device 1. The electrical conductor 9 schematically shows the entire electrical conductor existing in the information terminal device 1, such as the ground plane of the wiring board 5, the shield plate of the display device 6a, and the metal contact of the push switch 7b. . In the information terminal device 1, when the insulating member 3 and the magnetic member 4 are not arranged, the magnetic field generated in the antenna 2a is canceled by the eddy current generated in the electric conductor 9, and the information transmission distance is reduced. On the other hand, conventionally, the magnetic member 4 is arranged between the electric conductor 9 and the antenna 2a to suppress the reduction of the information transmission distance. By disposing the insulating member 3 between the member 4 and the antenna 2a, the reduction in the information transmission distance is further suppressed. In FIG. 3, the surfaces of the antenna 2 a, the insulating member 3, and the magnetic member 4 facing each other are shown to have the same size, but this is not necessarily limited, and the insulating member 3 and the magnetic member 4 are not necessarily limited to the size of the antenna 2 a. The size of the member 4 may be increased to some extent or decreased. In FIG. 3, the space layer between the magnetic member 4 and the electric conductor 9 is an air layer. However, an insulating member similar to the insulating member 3 may be disposed in this space layer.

図４は、図３に示したアンテナ２ａ、絶縁部材３、磁性部材４および電気導体９のＡ−Ａ線断面図である。図４に示すように、絶縁部材３は、アンテナ２ａおよび磁性部材４に対して密着して配置されている。情報端末装置１の小型化を図る場合、アンテナ２ａと電気導体９との間隔は必然的に小さくなるため、このようにアンテナ２ａ、絶縁部材３および磁性部材４は互いに密着して配置させることが配置都合上、有効である。なお、実用的には、アンテナ２ａから電気導体９までの間隔は、０．１ｍｍでも小さいことが望まれ、具体的には１ｍｍ以下を目標とする場合がある。そして、このように限られたスペースの中でアンテナ２ａと電気導体９とが密接して配置される場合に、電気導体９に発生する渦電流をいかに抑制するかが本発明の課題である。 4 is a cross-sectional view of the antenna 2a, the insulating member 3, the magnetic member 4, and the electric conductor 9 shown in FIG. As shown in FIG. 4, the insulating member 3 is disposed in close contact with the antenna 2 a and the magnetic member 4. When the information terminal device 1 is downsized, the distance between the antenna 2a and the electric conductor 9 is inevitably small, and thus the antenna 2a, the insulating member 3 and the magnetic member 4 can be arranged in close contact with each other. Effective for placement. In practice, it is desirable that the distance from the antenna 2a to the electric conductor 9 is as small as 0.1 mm. Specifically, the target may be 1 mm or less. And it is a subject of this invention how to suppress the eddy current which generate | occur | produces in the electrical conductor 9, when the antenna 2a and the electrical conductor 9 are arrange | positioned closely in such a limited space.

アンテナ２ａ、絶縁部材３および磁性部材４を互いに密着配置させるためには、図５に示すように、絶縁性および非磁性を有した絶縁基材３ａと絶縁接着剤３ｂとの２層によって絶縁部材３を形成し、絶縁接着剤３ｂによって絶縁基材３ａを磁性部材４に接着するようにしてもよい。さらに、絶縁基材３ａのアンテナ２ａに対向する面に絶縁接着剤の層を設け、絶縁基材３ａとアンテナ２ａとを接着するようにしてもよい。このように、アンテナ２ａ、絶縁部材３および磁性部材４を互いに接着することによって、安価かつ簡便に各部材を密着配置させることができる。この場合、絶縁接着剤３ｂは、塗布して形成する接着剤であってもよいし、貼付して形成する粘着テープであってもよい。 In order to arrange the antenna 2a, the insulating member 3 and the magnetic member 4 in close contact with each other, as shown in FIG. 5, the insulating member is composed of two layers of insulating base material 3a and insulating adhesive 3b having insulating properties and nonmagnetic properties. 3 and the insulating base material 3a may be bonded to the magnetic member 4 by the insulating adhesive 3b. Furthermore, an insulating adhesive layer may be provided on the surface of the insulating base 3a facing the antenna 2a so that the insulating base 3a and the antenna 2a are bonded. Thus, by adhering the antenna 2a, the insulating member 3 and the magnetic member 4 to each other, the respective members can be arranged in close contact with each other at low cost. In this case, the insulating adhesive 3b may be an adhesive formed by coating, or an adhesive tape formed by sticking.

なお、絶縁部材３は、さらに複数層によって形成し、たとえば図６に示すように、絶縁基材３ｃ，３ｄおよび絶縁接着材３ｂの３層構造としてもよく、さらに、各層の部材を絶縁性および非磁性を有した絶縁接着剤によって接着するようにしてもよい。また、各部材を密着させる必要がない場合には、たとえば図７に示すように、絶縁部材３とアンテナ２ａとの間に部材を配置せず空気層３ｅを設けるようにしてもよい。この空気層３ｅは、絶縁性および非磁性を有し、絶縁部材３として作用する。 The insulating member 3 is further formed of a plurality of layers, and may have a three-layer structure of insulating base materials 3c and 3d and an insulating adhesive material 3b as shown in FIG. 6, for example. You may make it adhere | attach with the insulating adhesive agent which has nonmagnetism. Further, when it is not necessary to bring the members into close contact with each other, for example, as shown in FIG. 7, an air layer 3e may be provided without disposing the member between the insulating member 3 and the antenna 2a. The air layer 3e has insulating properties and nonmagnetic properties, and acts as the insulating member 3.

ここで、アンテナ２ａ、絶縁部材３および磁性部材４を配置する工程として、たとえば、図４に示したように個別に部材を配置する場合、情報端末装置１の筐体にアンテナ２ａを配置し、このアンテナ２ａの上に順次、絶縁部材３および磁性部材４を配置すればよい。また、図５に示したように絶縁接着剤３ｂによって部材を接着して配置する場合、たとえば、筐体にアンテナ２ａを配置し、その後、接着した絶縁部材３および磁性部材４をアンテナ２ａ上に配置すればよい。あるいは、情報端末装置１の筐体とは別に、アンテナ２ａ、絶縁部材３および磁性部材４を順次重ね合わせて一体の部品とし、その後、この一体の部品を筐体に固定するようにしてもよい。なお、絶縁部材３は、これら配置工程の前にあらかじめ、アンテナ２ａの最終的な情報伝送距離が所定値以上もしくは所定範囲内に入る厚さに成形しておくとよい。 Here, as a process of arranging the antenna 2a, the insulating member 3 and the magnetic member 4, for example, when arranging the members individually as shown in FIG. 4, the antenna 2a is arranged in the casing of the information terminal device 1, The insulating member 3 and the magnetic member 4 may be sequentially disposed on the antenna 2a. Further, when the members are bonded and arranged by the insulating adhesive 3b as shown in FIG. 5, for example, the antenna 2a is arranged in the housing, and then the bonded insulating member 3 and magnetic member 4 are placed on the antenna 2a. What is necessary is just to arrange. Alternatively, separately from the housing of the information terminal device 1, the antenna 2 a, the insulating member 3, and the magnetic member 4 may be sequentially stacked to form an integral part, and then the integral part may be fixed to the housing. . The insulating member 3 may be formed in advance to a thickness that allows the final information transmission distance of the antenna 2a to be greater than or equal to a predetermined value or within a predetermined range before these arrangement steps.

つぎに、絶縁部材３を配置したアンテナ２ａと磁性部材４との間隔の作用によって、電気導体９に発生した渦電流に起因する情報伝送距離の減小が抑制されることを示す実験結果について説明する。図８は、アンテナ２ａから磁性体４までの間隔と、磁性部材４の厚さと、磁性部材４から電気導体９までの間隔とを変化させて測定した情報伝送距離の結果を示す図である。ここで、アンテナ２ａから磁性部材４までの間隔をＡ、磁性部材４の厚さをＢ、磁性部材４から電気導体９までの間隔をＣとすると、アンテナ２ａから電気導体９までの間隔は（Ａ＋Ｂ＋Ｃ）に等しい。組合せ「１」は、従来技術に相当し、アンテナ２ａと磁性部材４、および磁性部材４と電気導体９をそれぞれ０．１５ｍｍ厚の粘着剤である両面テープによって貼り合わせた構成で情報伝送距離を測定した結果である。これに対して、組合せ「２」および「３」は、間隔Ａを間隔Ｃよりも大きくした本発明の構成による測定結果であり、それぞれ厚さＢを固定し、間隔Ａを変化させた場合の測定結果である。また、組合せ「４」は、厚さＢと間隔（Ａ＋Ｂ＋Ｃ）とを組合せ「３」と等しくし、間隔Ａを間隔Ｃよりも小さくした構成の測定結果である。なお、この測定で使用したアンテナ２ａは、２５μｍ厚のポリイミドを基材としたフレキシブル配線板にアンテナパターンを形成しており、周波数１３．５６ＭＨｚの電波を送受信できる。 Next, experimental results showing that the reduction in the information transmission distance due to the eddy current generated in the electric conductor 9 is suppressed by the action of the distance between the antenna 2a having the insulating member 3 and the magnetic member 4 will be described. To do. FIG. 8 is a diagram showing the result of the information transmission distance measured by changing the distance from the antenna 2 a to the magnetic body 4, the thickness of the magnetic member 4, and the distance from the magnetic member 4 to the electric conductor 9. Here, when the distance from the antenna 2a to the magnetic member 4 is A, the thickness of the magnetic member 4 is B, and the distance from the magnetic member 4 to the electric conductor 9 is C, the distance from the antenna 2a to the electric conductor 9 is ( A + B + C). The combination “1” corresponds to the prior art, and the information transmission distance is set by a configuration in which the antenna 2 a and the magnetic member 4, and the magnetic member 4 and the electric conductor 9 are bonded to each other by a double-sided tape that is 0.15 mm thick adhesive. It is the result of measurement. On the other hand, the combinations “2” and “3” are measurement results according to the configuration of the present invention in which the interval A is larger than the interval C, and the thickness A is fixed and the interval A is changed. It is a measurement result. The combination “4” is a measurement result of a configuration in which the thickness B and the interval (A + B + C) are equal to the combination “3” and the interval A is smaller than the interval C. The antenna 2a used in this measurement has an antenna pattern formed on a flexible wiring board made of polyimide having a thickness of 25 μm and can transmit and receive radio waves having a frequency of 13.56 MHz.

図８に示すように、間隔（Ａ＋Ｂ＋Ｃ）＝１．３ｍｍが等しい組合せ「１」および「３」の情報伝送距離はそれぞれ３５ｍｍおよび６０ｍｍであり、組合せ「３」は組合せ「１」の約１．７倍の情報伝送距離を有している。この結果は、間隔（Ａ＋Ｂ＋Ｃ）が等しい場合、絶縁部材３を配置した間隔Ａを間隔Ｃよりも大きくすることによって、アンテナ２ａの情報伝送距離を少なくとも約１．７倍に延伸できることを示している。すなわち、この結果は、絶縁部材３を配置した間隔Ａを間隔Ｃよりも大きくすることによって、従来技術に比して、電気導体９に発生する渦電流に起因した情報伝送距離の減小を一層抑制できることを示している。 As shown in FIG. 8, the information transmission distances of the combinations “1” and “3” having the same distance (A + B + C) = 1.3 mm are 35 mm and 60 mm, respectively, and the combination “3” is about 1. The information transmission distance is 7 times. This result shows that the information transmission distance of the antenna 2a can be extended at least about 1.7 times by setting the interval A in which the insulating member 3 is disposed larger than the interval C when the interval (A + B + C) is equal. . That is, as a result, the distance A in which the insulating member 3 is disposed is made larger than the distance C, thereby further reducing the information transmission distance due to the eddy current generated in the electric conductor 9 as compared with the prior art. It shows that it can be suppressed.

同様に、間隔（Ａ＋Ｂ＋Ｃ）＝１．３ｍｍが等しい組合せ「３」および「４」の情報伝送距離はそれぞれ６０ｍｍおよび４０ｍｍであり、組合せ「３」は組合せ「４」の約１．５倍の情報伝送距離を有している。この結果は、間隔（Ａ＋Ｂ＋Ｃ）および厚さBが等しい場合、絶縁部材３を配置した間隔Ａを間隔Ｃよりも大きくし、すなわち、磁性部材４をアンテナ２ａよりも電気導体９に近く配置することによって、アンテナ２ａの情報伝送距離を少なくとも約１．５倍に延伸できることを示している。 Similarly, the information transmission distances of the combinations “3” and “4” in which the distance (A + B + C) = 1.3 mm are equal are 60 mm and 40 mm, respectively, and the combination “3” is about 1.5 times the information of the combination “4”. Has a transmission distance. As a result, when the interval (A + B + C) and the thickness B are equal, the interval A in which the insulating member 3 is arranged is made larger than the interval C, that is, the magnetic member 4 is arranged closer to the electric conductor 9 than the antenna 2a. Shows that the information transmission distance of the antenna 2a can be extended at least about 1.5 times.

また、組合せ「２」では、間隔（Ａ＋Ｂ＋Ｃ）＝１．１ｍｍであり、組合せ「１」に比べて、アンテナ２ａから電気導体９までの間隔が小さくなっているにもかかわらず、絶縁部材３を配置した間隔Ａを間隔Ｃよりも大きくすることによって、情報伝送距離を３５ｍｍから４５ｍｍへと約１．３倍に延伸できることを示している。この組合せ２の結果でも、情報伝送距離の減小を従来技術より抑制できることがわかる。 Further, in the combination “2”, the distance (A + B + C) = 1.1 mm, and the insulating member 3 is connected to the electric conductor 9 in spite of the fact that the distance from the antenna 2a to the electric conductor 9 is smaller than that in the combination “1”. It is shown that the information transmission distance can be extended approximately 35 times from 35 mm to 45 mm by making the arranged interval A larger than the interval C. Also from the result of this combination 2, it can be seen that the reduction in the information transmission distance can be suppressed as compared with the prior art.

なお、磁性部材４は、アンテナ１から電気導体９方向に発生した磁束が磁性部材４の中を通り、磁性部材４を配置しない場合に比べ、電気導体９に錯交する磁束を減少させるため、情報送信距離の減小を抑制するものである。 In addition, since the magnetic member 4 reduces the magnetic flux generated in the direction of the electric conductor 9 from the antenna 1 through the magnetic member 4 and reduces the magnetic flux intermingled with the electric conductor 9, compared to the case where the magnetic member 4 is not disposed. This suppresses the decrease in the information transmission distance.

以上説明したこの実施の形態１にかかる情報端末装置１およびこの情報端末装置１の製造方法によれば、装置の小型化等にともなってアンテナ２ａの近傍に情報端末装置１の内部に存在する金属等である電気導体９を配置する場合、アンテナ２ａと電気導体９との間に磁性を有した磁性部材４を配置し、さらに、アンテナ２ａから磁性部材４までの間隔Ａを磁性部材４から電気導体９までの間隔Ｃよりも大きくすることによって、電気導体９に発生する渦電流に起因したアンテナ２ａの情報伝送距離の減小を一層軽減することができ、確実に所望の情報伝送距離を得ることができる。 According to the information terminal device 1 and the manufacturing method of the information terminal device 1 according to the first embodiment described above, the metal present inside the information terminal device 1 in the vicinity of the antenna 2a as the device is downsized. When the electric conductor 9 is disposed, the magnetic member 4 having magnetism is disposed between the antenna 2a and the electric conductor 9, and the distance A from the antenna 2a to the magnetic member 4 is electrically connected from the magnetic member 4 to the electric member 9. By making the distance C larger than the distance C to the conductor 9, the reduction in the information transmission distance of the antenna 2a due to the eddy current generated in the electric conductor 9 can be further reduced, and a desired information transmission distance can be reliably obtained. be able to.

なお、上述した情報端末装置１は、ＲＦＩＤタグ８に対し所定周波数の電波を送受信して情報読取処理および情報書込処理を行う情報端末装置として説明したが、このような情報端末装置に限定されるものではなく、たとえば図９に示すような情報端末装置であってもよい。図９は、この実施の形態１の変形例としての情報端末装置の概要構成を示すブロック図である。図９に示すように、この変形例としての情報端末装置１１は、図１に示した情報端末装置１のＲＦＩＤ処理部２に代えて、アンテナ２ａを接続したＲＦＩＤチップ１２を備えている。情報端末装置１１は、アンテナ２ａによって、外部情報端末装置２１が備えるＲＦＩＤ処理部２２との間で所定周波数の電波を送受信する。そして、情報端末装置１１は、受信電波による外部情報端末装置２１からの指示情報をもとに、ＲＦＩＤチップ１２に対して情報の入出力を行う。なお、ＲＦＩＤ処理部２２は、アンテナ２２ａによって、情報端末装置１１に対して電波を送受信する。また、ＲＦＩＤチップ１２の起動、電力供給等は、情報端末装置１１または外部情報端末装置２１のどちらから行うようにしてもよい。 The above-described information terminal device 1 has been described as an information terminal device that performs information reading processing and information writing processing by transmitting and receiving radio waves of a predetermined frequency to and from the RFID tag 8, but is limited to such information terminal devices. For example, an information terminal device as shown in FIG. 9 may be used. FIG. 9 is a block diagram showing a schematic configuration of an information terminal device as a modification of the first embodiment. As shown in FIG. 9, an information terminal device 11 as a modification includes an RFID chip 12 connected to an antenna 2a instead of the RFID processing unit 2 of the information terminal device 1 shown in FIG. The information terminal device 11 transmits and receives radio waves of a predetermined frequency to and from the RFID processing unit 22 provided in the external information terminal device 21 by the antenna 2a. Then, the information terminal device 11 inputs / outputs information to / from the RFID chip 12 based on the instruction information from the external information terminal device 21 by the received radio wave. Note that the RFID processing unit 22 transmits and receives radio waves to and from the information terminal device 11 through the antenna 22a. Further, activation of the RFID chip 12, power supply, and the like may be performed from either the information terminal device 11 or the external information terminal device 21.

（実施の形態２）
つぎに、本発明の実施の形態２について説明する。上述した実施の形態１では、アンテナ２ａと電気導体９との間に絶縁部材３と磁性部材４とを配置するようにしていたが、この実施の形態２では、磁性部材４と電気導体９との間に、さらに金属シートを配置するようにしている。 (Embodiment 2)
Next, a second embodiment of the present invention will be described. In the first embodiment described above, the insulating member 3 and the magnetic member 4 are arranged between the antenna 2a and the electric conductor 9, but in the second embodiment, the magnetic member 4 and the electric conductor 9 Further, a metal sheet is arranged between them.

図１０は、本発明の実施の形態２にかかる情報端末装置のアンテナ周辺部の構成を示す断面図である。図１０に示すアンテナ周辺部の構成では、図５に示した構成であるアンテナ２ａ、絶縁部材３、磁性部材４および電気導体９に加えて、磁性部材４と電気導体９との間に金属シート１４が配置されている。この金属シート１４は、接着剤１３によって磁性部材４に接着されている。その他の構成は、情報端末装置１と同じであり、同一構成部分には同一符号を付している。 FIG. 10: is sectional drawing which shows the structure of the antenna peripheral part of the information terminal device concerning Embodiment 2 of this invention. In the configuration of the antenna periphery shown in FIG. 10, in addition to the antenna 2a, the insulating member 3, the magnetic member 4 and the electric conductor 9 which are the configurations shown in FIG. 5, a metal sheet is provided between the magnetic member 4 and the electric conductor 9. 14 is arranged. The metal sheet 14 is bonded to the magnetic member 4 with an adhesive 13. Other configurations are the same as those of the information terminal device 1, and the same components are denoted by the same reference numerals.

金属シート１４は、銅、アルミ等の導体金属によって形成され、シートに限らずプレート状であってもよい。接着剤１３は、絶縁体、電気導体、磁性体、非磁性体のいずれで形成されてもよく、また、塗布して形成する接着剤、貼付して形成する粘着テープ等のいずれであってもよい。金属シート１４は、この金属シート１４もしくは磁性部材４に形成された接着剤１３によって、磁性部材４に接着される。 The metal sheet 14 is formed of a conductive metal such as copper or aluminum, and is not limited to a sheet but may be a plate shape. The adhesive 13 may be formed of any of an insulator, an electric conductor, a magnetic body, and a non-magnetic body, and may be any of an adhesive formed by coating, an adhesive tape formed by pasting, and the like. Good. The metal sheet 14 is bonded to the magnetic member 4 by the adhesive 13 formed on the metal sheet 14 or the magnetic member 4.

このように金属シート１４をさらに配置することによって、アンテナ２ａから電気導体９方向に発生した磁束であって磁性部材４によって捕捉されなかった磁束は、金属シート１４に錯交して渦電流を発生させるが、電気導体９に錯交せず渦電流を発生させない。このため、電気導体９によって情報伝送距離が減小させられることがなくなり、たとえば、情報端末装置の組み付けのばらつきにともなってアンテナ２ａから電気導体９までの距離が個体によって変動しても、情報伝送距離は個体によらず安定させることができる。 By further disposing the metal sheet 14 in this way, the magnetic flux generated in the direction of the electric conductor 9 from the antenna 2a and not captured by the magnetic member 4 is mixed with the metal sheet 14 to generate eddy currents. However, no eddy current is generated without intermingling with the electric conductor 9. For this reason, the information transmission distance is not reduced by the electric conductor 9, and for example, even if the distance from the antenna 2a to the electric conductor 9 varies depending on the individual due to the variation in the assembly of the information terminal device, the information transmission The distance can be stabilized regardless of the individual.

ここで、図８に示す表との対応関係は、次の通りである。金属シート１４は、電気的には電気導体９と等価の動きを示すので、表中の電気導体９を金属シート１４に置き換えた形となる。つまり、磁性部材４と電気導体９の間隔（Ｃ）は、磁性部材４と金属シート１４の間隔（Ｃ）となり、さらに、アンテナ２ａと電気導体９の間隔（Ａ＋Ｂ＋Ｃ）は、アンテナ２ａと金属シート１４の間隔（Ａ＋Ｂ＋Ｃ）となる。 Here, the correspondence with the table shown in FIG. 8 is as follows. The metal sheet 14 is electrically equivalent to the electric conductor 9, so that the electric conductor 9 in the table is replaced with the metal sheet 14. That is, the interval (C) between the magnetic member 4 and the electric conductor 9 is the interval (C) between the magnetic member 4 and the metal sheet 14, and the interval (A + B + C) between the antenna 2a and the electric conductor 9 is the antenna 2a and the metal sheet. 14 intervals (A + B + C).

また、金属シート１４をさらに配置することによって、アンテナ２から金属シート１４までの積層部品をユニット化することができる。このユニット化によって、情報伝送距離を含む種々のアンテナ性能評価をユニット単体で行うことができる。 Further, by arranging the metal sheet 14 further, the laminated parts from the antenna 2 to the metal sheet 14 can be unitized. By this unitization, various antenna performance evaluations including the information transmission distance can be performed as a single unit.

本発明の実施の形態１にかかる情報端末装置の概要構成を示すブロック図である。It is a block diagram which shows schematic structure of the information terminal device concerning Embodiment 1 of this invention. 本発明の実施の形態１にかかる情報端末装置の概要構成を示す斜視図である。It is a perspective view which shows schematic structure of the information terminal device concerning Embodiment 1 of this invention. 図１に示した情報端末装置のアンテナ周辺部材の構成を示す斜視図である。It is a perspective view which shows the structure of the antenna peripheral member of the information terminal device shown in FIG. 図３に示したＡ−Ａ断面を示す断面図である。It is sectional drawing which shows the AA cross section shown in FIG. 図４に示した絶縁部材の変形例を示す断面図である。It is sectional drawing which shows the modification of the insulating member shown in FIG. 図４に示した絶縁部材の変形例を示す断面図である。It is sectional drawing which shows the modification of the insulating member shown in FIG. 図４に示した絶縁部材の変形例を示す断面図である。It is sectional drawing which shows the modification of the insulating member shown in FIG. 図４に示した絶縁部材を配置したアンテナと磁性部材との間隔の作用によって情報伝送距離の減小が抑制される効果を説明する実験結果を示す図である。It is a figure which shows the experimental result explaining the effect by which the reduction | decrease of information transmission distance is suppressed by the effect | action of the space | interval of the antenna which has arrange | positioned the insulating member shown in FIG. 4, and a magnetic member. 本発明の実施の形態１にかかる情報端末装置の変形例の概要構成を示すブロック図である。It is a block diagram which shows schematic structure of the modification of the information terminal device concerning Embodiment 1 of this invention. 本発明の実施の形態２にかかる情報端末装置のアンテナ周辺部材の構成を示す断面図である。It is sectional drawing which shows the structure of the antenna peripheral member of the information terminal device concerning Embodiment 2 of this invention.

Explanation of symbols

１，１１情報端末装置
２，２２ＲＦＩＤ処理部
２ａ，２２ａアンテナ
２ａａアンテナパターン
３絶縁部材
３ａ，３ｃ，３ｄ絶縁基材
３ｂ絶縁接着剤
３ｅ空気層
４磁性部材
５配線基板
６表示部
６ａ表示装置
７入力部
７ａ入力ボタン
７ｂプッシュスイッチ
８ＲＦＩＤタグ
８ａアンテナ
９電気導体
１２ＲＦＩＤチップ
１３接着剤
１４金属シート
２１外部情報端末装置
Ｃ１，Ｃ２，Ｃ３制御部 DESCRIPTION OF SYMBOLS 1,11 Information terminal device 2,22 RFID process part 2a, 22a Antenna 2aa Antenna pattern 3 Insulating member 3a, 3c, 3d Insulating base material 3b Insulating adhesive 3e Air layer 4 Magnetic member 5 Wiring board 6 Display part 6a Display apparatus 7 Input unit 7a Input button 7b Push switch 8 RFID tag 8a Antenna 9 Electrical conductor 12 RFID chip 13 Adhesive 14 Metal sheet 21 External information terminal device C1, C2, C3 control unit

Claims

In an information terminal device that performs non-contact information processing on an information storage medium,
An antenna for transmitting information to and from the information storage medium;
A magnetic member disposed between the electric conductor present in the information terminal device and the antenna, and having magnetism;
An insulating member that is disposed between the electric conductor and the antenna and is nonmagnetic and insulating;
When the first layer thickness sandwiched between the antenna and the magnetic member is d1, and the second layer thickness sandwiched between the magnetic member and the electrical conductor is d2, d1> d2 An information terminal device characterized by satisfying

In an information terminal device incorporating an information storage medium in which information processing is performed in a non-contact manner by an external information terminal device,
An antenna connected to the information storage medium and transmitting information to and from the external information terminal device;
A magnetic member disposed between the electric conductor present in the information terminal device and the antenna, and having magnetism;
An insulating member that is disposed between the electric conductor and the antenna and is nonmagnetic and insulating;
When the first layer thickness sandwiched between the antenna and the magnetic member is d1, and the second layer thickness sandwiched between the magnetic member and the electrical conductor is d2, d1> d2 An information terminal device characterized by satisfying

3. The information according to claim 1, wherein the insulating member is set to a thickness in which an information transmission distance at which the information can be transmitted by the antenna is greater than or equal to a predetermined value or within a predetermined range. Terminal device.

The information terminal apparatus according to claim 1, wherein the insulating member is formed of a plurality of layers that are nonmagnetic and have insulating properties.

The insulating member is formed of a nonmagnetic and insulating adhesive, an adhesive and a base, an adhesive, or an adhesive and a base, respectively. Information terminal device described in 1.

The information terminal device according to claim 1, wherein the magnetic member has a metal sheet or a metal plate on a surface facing the electric conductor.

The information terminal device according to claim 6, wherein the magnetic member has the metal sheet or the metal plate adhered to a surface facing the electric conductor with an adhesive or an adhesive.

In a method for manufacturing an information terminal device that performs non-contact information processing on an information storage medium,
An antenna arrangement step of arranging an antenna for transmitting information to and from the information storage medium;
A magnetic member disposing step of disposing a magnetic member having magnetism between the electric conductor present in the information terminal device and the antenna;
An insulating member disposing step of disposing a nonmagnetic and insulating insulating member between the electric conductor and the antenna;
In the magnetic member arranging step, the first layer thickness sandwiched between the antenna and the magnetic member is d1, and the second layer thickness sandwiched between the magnetic member and the electric conductor is d2. Then, the magnetic member is disposed so as to satisfy the relationship d1> d2.

In a method of manufacturing an information terminal device including an information storage medium in which information processing is performed in a non-contact manner by an external information terminal device,
An antenna arrangement step of arranging an antenna connected to the information storage medium and transmitting information to and from the external information terminal device;
A magnetic member disposing step of disposing a magnetic member having magnetism between the electric conductor present in the information terminal device and the antenna;
An insulating member disposing step of disposing a nonmagnetic and insulating insulating member between the electric conductor and the antenna;
In the magnetic member arranging step, the first layer thickness sandwiched between the antenna and the magnetic member is d1, and the second layer thickness sandwiched between the magnetic member and the electric conductor is d2. Then, the magnetic member is disposed so as to satisfy the relationship d1> d2.

10. The information according to claim 8, wherein the insulating member is set to a thickness in which an information transmission distance capable of transmitting the information by the antenna is greater than or equal to a predetermined value or within a predetermined range. A method for manufacturing a terminal device.