JP7013747B2 - Communication terminal - Google Patents

Communication terminal Download PDF

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JP7013747B2
JP7013747B2 JP2017176616A JP2017176616A JP7013747B2 JP 7013747 B2 JP7013747 B2 JP 7013747B2 JP 2017176616 A JP2017176616 A JP 2017176616A JP 2017176616 A JP2017176616 A JP 2017176616A JP 7013747 B2 JP7013747 B2 JP 7013747B2
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communication terminal
battery
conductive portion
signal electrode
communication
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JP2019054366A (en
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祥 山田
智 三嶋
大輔 磯田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Description

本発明は、通信端末に関する。 The present invention relates to a communication terminal.

従来、電界(人体)通信の機能を有する通信端末が提案されている(例えば、特許文献1,2参照)。 Conventionally, a communication terminal having an electric field (human body) communication function has been proposed (see, for example, Patent Documents 1 and 2).

特許第5012830号公報Japanese Patent No. 501230 特開2015-192211号公報Japanese Unexamined Patent Publication No. 2015-192211

特許文献1,2に記載の通信端末を携帯して運用する場合、電源としては、ボタン電池等の一次電池や、外部より充電可能な二次電池が想定される。特許文献1,2に記載の通信端末では、電源としての電池が、信号電極に重なる位置に配置されている。このような通信端末について、以下に、より詳細に説明する。
図9は、従来の通信端末901を示す図である。図9(A)は、通信端末901の厚み方向Zに平行な断面における断面模式図である。図9(B)は、図9(A)のA-A矢視図である。
図9(A)に示すように、通信端末901は、信号電極910を備える。また、通信端末901は、電池4を備える。図9(B)に示すように、信号電極910は、その全面において、信号電極パターンを有する導電体により構成されている。よって、信号電極910は、電池4に重なる領域にも、信号電極パターンを有する。また、信号電極910と電池4との間隔が狭い。そのため、通信端末901において、信号電極910と電池4との間に、一定の静電容量Cが発生する。
When the communication terminals described in Patent Documents 1 and 2 are carried and operated, a primary battery such as a button battery or a secondary battery that can be charged from the outside is assumed as a power source. In the communication terminals described in Patent Documents 1 and 2, a battery as a power source is arranged at a position overlapping the signal electrode. Such a communication terminal will be described in more detail below.
FIG. 9 is a diagram showing a conventional communication terminal 901. FIG. 9A is a schematic cross-sectional view of the communication terminal 901 in a cross section parallel to the thickness direction Z. 9 (B) is a view taken along the line AA of FIG. 9 (A).
As shown in FIG. 9A, the communication terminal 901 includes a signal electrode 910. Further, the communication terminal 901 includes a battery 4. As shown in FIG. 9B, the signal electrode 910 is composed of a conductor having a signal electrode pattern on the entire surface thereof. Therefore, the signal electrode 910 also has a signal electrode pattern in the region overlapping the battery 4. Further, the distance between the signal electrode 910 and the battery 4 is narrow. Therefore, in the communication terminal 901, a constant capacitance C is generated between the signal electrode 910 and the battery 4.

上述の通信端末901において、電源として一次電池を使用する場合には、電池消耗後に電池を交換することになる。その際、電池の個体差により、静電容量Cの値が変わり、場合によっては、電極の共振周波数がずれて、通信性能が劣化つながってしまう。
また、上述の通信端末901において、電源として電池交換を想定しない二次電池を使用する場合においても、充放電の繰り返しによる電池の厚み変化によって、電池と信号電極910との間隔が変化する。そのことにより、信号電極910と電池との間に生じる静電容量Cの値が変わり、やはり、通信性能の劣化につながってしまう。
When a primary battery is used as a power source in the above-mentioned communication terminal 901, the battery is replaced after the battery is exhausted. At that time, the value of the capacitance C changes due to the individual difference of the battery, and in some cases, the resonance frequency of the electrode deviates, leading to deterioration of communication performance.
Further, even when a secondary battery that does not assume battery replacement is used as a power source in the above-mentioned communication terminal 901, the distance between the battery and the signal electrode 910 changes due to a change in the thickness of the battery due to repeated charging and discharging. As a result, the value of the capacitance C generated between the signal electrode 910 and the battery changes, which also leads to deterioration of communication performance.

特に、通信端末は、薄型化しており、信号電極と電池との間隔を近くするほど、その影響を受けやすくなる。
また、上述の電池のような導体の場合だけでなく、着脱可能な記憶媒体(例えば、メモリカード)のような誘電体を有する場合についても同様に、通信端末901の通信性能に影響を受ける場合がある。
そこで、本発明は、搭載した電池やメモリカード等の容量形成体による通信への影響を抑えた通信端末を提供することを目的とする。
In particular, the communication terminal is made thinner, and the closer the distance between the signal electrode and the battery is, the more easily it is affected.
Further, not only in the case of a conductor such as the battery described above, but also in the case of having a dielectric such as a removable storage medium (for example, a memory card), the communication performance of the communication terminal 901 is similarly affected. There is.
Therefore, an object of the present invention is to provide a communication terminal in which the influence of a capacity forming body such as a mounted battery or memory card on communication is suppressed.

本発明は、以下のような解決手段により、前記課題を解決する。なお、理解を容易にするために、本発明の実施形態に対応する符号を付して説明するが、これに限定されるものではない。また、符号を付して説明した構成は、適宜改良してもよく。また、少なくとも一部を他の構成物に代替してもよい。 The present invention solves the above-mentioned problems by the following solution means. In addition, in order to facilitate understanding, the description will be given with reference numerals corresponding to the embodiments of the present invention, but the present invention is not limited thereto. Further, the configuration described with reference numerals may be appropriately improved. Further, at least a part thereof may be replaced with another component.

第1の発明は、基準電極(2)に対向する位置に設けられる面状の信号電極(10,210,310)と、前記基準電極と前記信号電極との電位差による電気信号の通信を、伝達可能な通信媒体を介して行う通信部(6)と、前記信号電極に対向するようにして設けられた導体又は誘電体である容量形成体(4,305)と、を備え、前記信号電極は、電気を通す導電部(11,211,311)と、電気を通さない非導電部(12,212,312)とを有し、対向する前記容量形成体に重なる領域の少なくとも一部に、非導電部が形成されている、通信端末(1,201,301)である。
第2の発明は、第1の発明の通信端末(1-2)において、前記非導電部(12)は、切り欠き部である、通信端末である。
第3の発明は、第1の発明又は第2の発明の通信端末(1,201)において、前記非導電部(12,212)は、前記信号電極(10,210)に導通していない非導通部(14,214)を有する、通信端末である。
第4の発明は、第1の発明から第3の発明までのいずれかの通信端末(1,201,301)において、前記容量形成体は、電池(4,305)である、通信端末である。
第5の発明は、第4の発明の通信端末(201)において、前記非導電部(12)に、前記容量形成体(4)に接続された電池接触部(215)を有する、通信端末である。
The first invention transmits communication between a planar signal electrode (10, 210, 310) provided at a position facing the reference electrode (2) and an electric signal due to a potential difference between the reference electrode and the signal electrode. The signal electrode comprises a communication unit (6) performed via a possible communication medium, and a capacitance forming body (4,305) which is a conductor or a dielectric provided so as to face the signal electrode. It has a conductive portion (11, 211, 311) that conducts electricity and a non-conductive portion (12,212, 312) that does not conduct electricity, and is not included in at least a part of a region overlapping the facing capacitance forming body. It is a communication terminal (1,201,301) on which a conductive portion is formed.
According to the second invention, in the communication terminal (1-2) of the first invention, the non-conductive portion (12) is a communication terminal which is a notch portion.
According to the third invention, in the communication terminal (1,201) of the first invention or the second invention, the non-conductive portion (12,212) is not conducting to the signal electrode (10,210). It is a communication terminal having a conducting portion (14,214).
The fourth invention is a communication terminal in which the capacity forming body is a battery (4,305) in any of the communication terminals (1,201,301) from the first invention to the third invention. ..
A fifth aspect of the present invention is the communication terminal (201) of the fourth invention, wherein the non-conductive portion (12) has a battery contact portion (215) connected to the capacitance forming body (4). be.

本発明によれば、搭載した電池やメモリカード等の容量形成体による通信への影響を抑えた通信端末を提供することができる。 According to the present invention, it is possible to provide a communication terminal in which the influence of a capacity forming body such as a mounted battery or memory card on communication is suppressed.

第1実施形態に係る通信端末を示す図である。It is a figure which shows the communication terminal which concerns on 1st Embodiment. 第1実施形態に係る他の通信端末を示す図である。It is a figure which shows the other communication terminal which concerns on 1st Embodiment. 第1実施形態に係る他の通信端末を示す図である。It is a figure which shows the other communication terminal which concerns on 1st Embodiment. 第1実施形態に係る他の通信端末を示す図である。It is a figure which shows the other communication terminal which concerns on 1st Embodiment. 第1実施形態に係る他の通信端末を示す図である。It is a figure which shows the other communication terminal which concerns on 1st Embodiment. 第2実施形態に係る通信端末を示す図である。It is a figure which shows the communication terminal which concerns on 2nd Embodiment. 第2実施形態に係る他の通信端末を示す図である。It is a figure which shows the other communication terminal which concerns on 2nd Embodiment. 第3実施形態に係る通信端末を示す図である。It is a figure which shows the communication terminal which concerns on 3rd Embodiment. 従来の通信端末を示す図である。It is a figure which shows the conventional communication terminal.

以下、本発明を実施するための形態について、図を参照しながら説明する。なお、これは、あくまでも一例であって、本発明の技術的範囲はこれに限られるものではない。
(第1実施形態)
図1は、第1実施形態に係る通信端末1を示す図である。図1(A)は、通信端末1の厚み方向Zに平行な断面における断面模式図である。図1(B)は、図1(A)のA-A矢視図である。図1を以下に説明する各図において、通信端末の厚み方向をZ方向とし、それに直交する方向のうち、通信端末の長手方向をX方向、短手方向をY方向とする。
図1(A)に示す通信端末1は、電界通信の機能を有する。通信端末1は、例えば、ICタグ(不図示)に記憶されたID(IDentification)情報を、電界通信を介して外部装置(不図示)に送信する。なお、ICタグは、ICチップとして後述の基板3上に設けられるようにしてもよく、また、通信端末1とは別体のカード内に設けられ、ID情報を非接触通信により通信端末1に送信するようにしてもよい。
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that this is only an example, and the technical scope of the present invention is not limited to this.
(First Embodiment)
FIG. 1 is a diagram showing a communication terminal 1 according to the first embodiment. FIG. 1A is a schematic cross-sectional view of the communication terminal 1 in a cross section parallel to the thickness direction Z. FIG. 1B is an arrow view taken along the line AA of FIG. 1A. In each of the drawings described below, the thickness direction of the communication terminal is the Z direction, and among the directions orthogonal to the Z direction, the longitudinal direction of the communication terminal is the X direction and the lateral direction is the Y direction.
The communication terminal 1 shown in FIG. 1A has an electric field communication function. The communication terminal 1 transmits, for example, ID (IDentification) information stored in an IC tag (not shown) to an external device (not shown) via electric field communication. The IC tag may be provided as an IC chip on the substrate 3 described later, or may be provided in a card separate from the communication terminal 1 and ID information is transmitted to the communication terminal 1 by non-contact communication. You may send it.

通信端末1は、箱枠形状の筐体20により構成される。
筐体20の内部には、Z方向上部に信号電極10を備え、Z方向下部に基準電極2を備える。信号電極10と、基準電極2とは、筐体20の厚さ方向Zにおいて、平行に設置されている。ここで、平行とは、厳密な意味での平行のみではなく、信号電極10と、基準電極2とが接触しない範囲において平行ではない状態をも含む。
ここで、図1では、配線等の図示を省略すると共に、通信端末1の内部に配置された主要な電子部品のみに符号を付している。
基準電極2は、面状であり、例えば、一般的なプリント基板や、金属箔等のシートにより構成される。ここで、面状は、数学的な意味での厳密な面を意味するものではなく、電極としての厚みを有するものを含む意味である。また、面状には、平面や曲面といった形状をも含む。
The communication terminal 1 is composed of a box-shaped housing 20.
Inside the housing 20, a signal electrode 10 is provided in the upper part in the Z direction, and a reference electrode 2 is provided in the lower part in the Z direction. The signal electrode 10 and the reference electrode 2 are installed in parallel in the thickness direction Z of the housing 20. Here, the term "parallel" includes not only parallel in a strict sense but also a state in which the signal electrode 10 and the reference electrode 2 are not parallel in a range where they do not come into contact with each other.
Here, in FIG. 1, the wiring and the like are not shown, and the reference numerals are given only to the main electronic components arranged inside the communication terminal 1.
The reference electrode 2 is planar and is composed of, for example, a general printed circuit board or a sheet such as a metal foil. Here, the surface shape does not mean a strict surface in a mathematical sense, but includes a surface having a thickness as an electrode. Further, the planar shape also includes a shape such as a flat surface or a curved surface.

基板3は、基準電極2に重ねて、基準電極2のZ方向上側に配置される。基板3は、例えば、コントロール基板である。基板3には、電池4(容量形成体)、電界通信部6(通信部)、信号接続部7等が配置されている。
電池4は、ボタン電池等の一次電池である。
電界通信部6は、送信する情報に応じて変調された信号を、信号電極10に供給して、人体の近傍に変調電界を誘起させ、人体(通信媒体)を介して外部機器との間で電界通信を行う。具体的には、電界通信部6は、基準電極2と、信号電極10との間の電位差による電気信号によって通信を行う。電界通信部6は、電界通信インタフェース、電界通信制御ドライバ等(いずれも不図示)により構成される。
信号接続部7は、信号電極10と、電界通信部6とを電気的に接続する。
The substrate 3 is placed on the reference electrode 2 on the upper side in the Z direction of the reference electrode 2. The substrate 3 is, for example, a control substrate. A battery 4 (capacity forming body), an electric field communication unit 6 (communication unit), a signal connection unit 7, and the like are arranged on the substrate 3.
The battery 4 is a primary battery such as a button battery.
The electric field communication unit 6 supplies a signal modulated according to the information to be transmitted to the signal electrode 10, induces a modulated electric field in the vicinity of the human body, and communicates with an external device via the human body (communication medium). Performs electric field communication. Specifically, the electric field communication unit 6 communicates by an electric signal due to a potential difference between the reference electrode 2 and the signal electrode 10. The electric field communication unit 6 includes an electric field communication interface, an electric field communication control driver, and the like (all not shown).
The signal connection unit 7 electrically connects the signal electrode 10 and the electric field communication unit 6.

なお、基板3には、図示しない制御部を有する。制御部は、電界通信部6における通信や、その他の動作を制御する。制御部は、MPU(Micro-Processing Unit)、メモリ等により構成される。制御部のメモリには、電界通信部6による電界通信を行うためのアプリケーションソフトが記憶されている。
また、この例では、基準電極2と基板3とが別々のものとして記載しているが、基板3のグランドを、基準電極2としてもよい。
The substrate 3 has a control unit (not shown). The control unit controls communication and other operations in the electric field communication unit 6. The control unit is composed of an MPU (Micro-Processing Unit), a memory, and the like. The memory of the control unit stores application software for performing electric field communication by the electric field communication unit 6.
Further, in this example, the reference electrode 2 and the substrate 3 are described as separate ones, but the ground of the substrate 3 may be used as the reference electrode 2.

図1(B)に示すように、信号電極10は、面状であり、導電部11と、非導電部12とにより構成される。なお、信号電極10についても基準電極2と同様に、面状は、電極としての厚みを有するものを含む。
導電部11は、信号電極パターンを有するものであり、例えば、一般的なプリント基板や、金属箔等のシートにより構成される。
非導電部12は、信号電極パターンを有さず、非導電の材料により形成された基材により構成される。
ここで、信号電極10において電池4(Y方向に並んで2つ配置されている。)に重なる領域である電池領域13は、非導電部12により形成されている。このような構成により、電池4と、信号電極10との間の静電容量Cは、発生せず、ほぼ0とみなせる。よって、通信端末1は、電池4を交換等したことによる電池4の個体差を考慮しなくて済み、静電容量の変化が起因となる通信性能の劣化を防ぐことができる。
As shown in FIG. 1 (B), the signal electrode 10 is planar and is composed of a conductive portion 11 and a non-conductive portion 12. As with the reference electrode 2, the signal electrode 10 also includes a surface having a thickness as an electrode.
The conductive portion 11 has a signal electrode pattern, and is composed of, for example, a general printed circuit board or a sheet such as a metal foil.
The non-conductive portion 12 does not have a signal electrode pattern and is composed of a base material formed of a non-conductive material.
Here, in the signal electrode 10, the battery region 13, which is a region overlapping the batteries 4 (two arranged side by side in the Y direction), is formed by the non-conductive portion 12. With such a configuration, the capacitance C between the battery 4 and the signal electrode 10 does not occur and can be regarded as almost zero. Therefore, the communication terminal 1 does not need to consider the individual difference of the battery 4 due to the replacement of the battery 4, and can prevent the deterioration of the communication performance due to the change in the capacitance.

次に、通信端末1の他の例について、図2から図5に基づき説明する。
図2から図5までは、第1実施形態に係る他の通信端末1を示す図であり、図1に対応する図である。
Next, another example of the communication terminal 1 will be described with reference to FIGS. 2 to 5.
2 to 5 are diagrams showing another communication terminal 1 according to the first embodiment, and are diagrams corresponding to FIG. 1.

(他の実施例1)
図2(A)に示す通信端末1-1は、信号電極10-1が、導電部11-1のみにより構成されている。また、図2(B)に示すように、信号電極10-1は、電池領域13を含まないように構成され、図1に比較して面積が小さい。つまり、信号電極10-1は、非導電部12を、電池領域13を切り欠いた切り欠き部として構成するものである。
この場合、通信端末1-1における電池4と、信号電極10-1との間の静電容量Cは、信号電極10-1が電池4に重なる領域を有さないので、上述した実施例の通信端末1(図1(A))と同様に、ほぼ0とみなせる。よって、通信端末1-1は、電池4を交換等したことによる通信性能の劣化を防ぐことができる。
なお、信号電極10-1の導電部11-1と、信号電極10の導電部11とは、その面積及び配置位置がほぼ同じであるので、電界通信の通信性能は、通信端末1と、通信端末1-1とにおいて、ほぼ同じになる。
(Other Example 1)
In the communication terminal 1-1 shown in FIG. 2A, the signal electrode 10-1 is composed of only the conductive portion 11-1. Further, as shown in FIG. 2B, the signal electrode 10-1 is configured not to include the battery region 13, and has a smaller area than that of FIG. That is, the signal electrode 10-1 constitutes the non-conductive portion 12 as a notched portion notched in the battery region 13.
In this case, the capacitance C between the battery 4 and the signal electrode 10-1 in the communication terminal 1-1 does not have a region where the signal electrode 10-1 overlaps the battery 4, and therefore, in the above-described embodiment. Similar to the communication terminal 1 (FIG. 1 (A)), it can be regarded as almost 0. Therefore, the communication terminal 1-1 can prevent deterioration of communication performance due to replacement of the battery 4 or the like.
Since the area and the arrangement position of the conductive portion 11-1 of the signal electrode 10-1 and the conductive portion 11 of the signal electrode 10 are substantially the same, the communication performance of the electric field communication is the communication with the communication terminal 1. It is almost the same as the terminal 1-1.

(他の実施例2)
図3(A)に示す通信端末1-2は、信号電極10-2が、導電部11-2と、非導電部12-2とにより構成されている。また、図3(B)に示すように、導電部11-2は、電池領域13を避けるようにして、電池領域13をくり抜いた形状である。そして、非導電部12-2は、導電部11-2がくり抜かれた電池領域13に対応する位置に設けられ、電池領域13とほぼ同じ大きさ及び形状である。
この場合、通信端末1-2における電池4と、信号電極10-2との間の静電容量Cは、電池領域13が非導電部12-2になっているので、上述した実施例の通信端末1(図1(A))と同様に、ほぼ0とみなせる。よって、通信端末1-2は、電池4を交換等したことによる通信性能の劣化を防ぐことができる。
また、信号電極10-2の導電部11-2と、信号電極10の導電部11(図1(B))を比較すると、信号電極10-2の導電部11-2は、信号電極10の導電部11より面積が大きい。よって、通信端末1-2は、通信端末1(図1(A))よりも電界通信の通信性能を向上させることができる。
(Other Example 2)
In the communication terminal 1-2 shown in FIG. 3A, the signal electrode 10-2 is composed of a conductive portion 11-2 and a non-conductive portion 12-2. Further, as shown in FIG. 3B, the conductive portion 11-2 has a shape in which the battery region 13 is hollowed out so as to avoid the battery region 13. The non-conductive portion 12-2 is provided at a position corresponding to the battery region 13 in which the conductive portion 11-2 is hollowed out, and has substantially the same size and shape as the battery region 13.
In this case, the capacitance C between the battery 4 and the signal electrode 10-2 in the communication terminal 1-2 is such that the battery region 13 is the non-conductive portion 12-2, so that the communication of the above-described embodiment is performed. Similar to the terminal 1 (FIG. 1 (A)), it can be regarded as almost 0. Therefore, the communication terminal 1-2 can prevent deterioration of communication performance due to replacement of the battery 4 or the like.
Further, comparing the conductive portion 11-2 of the signal electrode 10-2 and the conductive portion 11 of the signal electrode 10 (FIG. 1 (B)), the conductive portion 11-2 of the signal electrode 10-2 is the signal electrode 10. The area is larger than that of the conductive portion 11. Therefore, the communication terminal 1-2 can improve the communication performance of the electric field communication as compared with the communication terminal 1 (FIG. 1 (A)).

上述した通信端末1-2の信号電極10-2は、導電部11-2が、電池領域13を避けるようにして、電池領域13をくり抜いた形状であった。また、非導電部12-2が、導電部11-2がくり抜かれた電池領域13に対応する位置に設けられ、電池領域13とほぼ同じ大きさ及び形状であった。しかし、通信端末1-2の信号電極10-2は、導電部11-2が、電池領域13を避けるようにして設けられていればよく、非導電部12-2の形状も電池領域13とほぼ同じ大きさ及び形状でなくてもよい。
図3(C)は、信号電極10-2の変形例である信号電極10-2aを示す。この例では、導電部11-2aは、電池領域13を避けるようにして設けられている。また、非導電部12-2aは、電池領域13を含むように形成され、その形状は、矩形である。このように、非導電部12-2aは、電池領域13よりも大きくてもよい。また、非導電部12-2aの形状は、その他、楕円形上や多角形状等、任意である。
The signal electrode 10-2 of the communication terminal 1-2 described above has a shape in which the battery region 13 is hollowed out so that the conductive portion 11-2 avoids the battery region 13. Further, the non-conductive portion 12-2 was provided at a position corresponding to the battery region 13 in which the conductive portion 11-2 was hollowed out, and had substantially the same size and shape as the battery region 13. However, the signal electrode 10-2 of the communication terminal 1-2 may be provided so that the conductive portion 11-2 avoids the battery region 13, and the shape of the non-conductive portion 12-2 is also the same as that of the battery region 13. It does not have to be about the same size and shape.
FIG. 3C shows a signal electrode 10-2a which is a modification of the signal electrode 10-2. In this example, the conductive portion 11-2a is provided so as to avoid the battery region 13. Further, the non-conductive portion 12-2a is formed so as to include the battery region 13, and the shape thereof is rectangular. As described above, the non-conductive portion 12-2a may be larger than the battery region 13. Further, the shape of the non-conductive portion 12-2a is arbitrary, such as an elliptical shape or a polygonal shape.

(他の実施例3)
図4(A)に示す通信端末1-3は、信号電極10-3が、導電部11-3と、非導電部12-3とにより構成されている。また、図4(B)に示すように、導電部11-3は、電池領域13の一部を円状にくり抜いた残りの部分であるため、電池領域13の一部領域を含まない。そして、非導電部12-3は、導電部11-3を有さない電池領域13の一部領域である。
この場合、通信端末1-3における電池4と、信号電極10-3との間には、電池領域13と、導電部11-3とが重複した部分で、静電容量Cが発生する。しかし、電池領域13の一部に非導電部12-3があるため、非導電部12-3がある分だけ、静電容量Cの発生を抑えることができる。ここで、非導電部12-3の面積は、電池領域13の面積の約1/4以上である場合に、通信機能の劣化を防ぐ程度に静電容量Cを下げる効果がある。
なお、この例では、非導電部12-3を円状のものであるとして説明したが、形状は、矩形状や多角形状等、任意である。また、電池領域13と、導電部11-3との重複部分は、例えば、網状に形成してもよく、その場合には、非導電部12-3は、網目にすればよい。
(Other Example 3)
In the communication terminal 1-3 shown in FIG. 4A, the signal electrodes 10-3 are composed of a conductive portion 11-3 and a non-conductive portion 12-3. Further, as shown in FIG. 4B, since the conductive portion 11-3 is the remaining portion obtained by hollowing out a part of the battery region 13 in a circular shape, the conductive portion 11-3 does not include a part of the battery region 13. The non-conductive portion 12-3 is a partial region of the battery region 13 that does not have the conductive portion 11-3.
In this case, a capacitance C is generated between the battery 4 in the communication terminal 1-3 and the signal electrode 10-3 at a portion where the battery region 13 and the conductive portion 11-3 overlap. However, since the non-conductive portion 12-3 is provided in a part of the battery region 13, the generation of the capacitance C can be suppressed by the amount of the non-conductive portion 12-3. Here, when the area of the non-conductive portion 12-3 is about 1/4 or more of the area of the battery region 13, there is an effect of lowering the capacitance C to the extent that deterioration of the communication function is prevented.
In this example, the non-conductive portion 12-3 has been described as having a circular shape, but the shape may be arbitrary, such as a rectangular shape or a polygonal shape. Further, the overlapping portion between the battery region 13 and the conductive portion 11-3 may be formed in a mesh shape, for example, and in that case, the non-conductive portion 12-3 may be meshed.

(他の実施例4)
図5(A)に示す通信端末1-4は、信号電極10-4が導電部11-4と、非導電部12-4とにより構成されている。また、図5(B)に示すように、導電部11-4は、上述の他の実施例2(図3参照)と同様に、電池領域13を避けるようにして、電池領域13の外周円より外側に形成されている。非導電部12-4は、導電部11-4がくり抜かれた電池領域13に対応する位置に設けられ、電池領域13とほぼ同じ大きさ及び形状である。
この非導電部12-4には、非導電部12-4の外周よりも内側に、導電部11-4に導通してしない非導通部14が円状に設けられている。この非導通部14は、例えば、導電部11-4と同じ基材により構成されている。
この場合、通信端末1-4における電池4と、信号電極10-4との間の静電容量Cは、非導通部14が非導電部12-4と同様の働きをするため、上述した実施例の通信端末1(図1(A))と同様に、ほぼ0とみなせる。よって、通信端末1-4は、電池4を交換等したことによる通信性能の劣化を防ぐことができる。
また、例えば、筐体20が透明である場合等、信号電極10-4を外観から視認可能な場合には、信号電極10-4は、外見上は、導電部11-4と、非導通部14との信号電極パターンが一体になっているように見えるため、見た目に区別が分かりづらいものにできる。
(Other Example 4)
In the communication terminal 1-4 shown in FIG. 5A, the signal electrodes 10-4 are composed of a conductive portion 11-4 and a non-conductive portion 12-4. Further, as shown in FIG. 5B, the conductive portion 11-4 avoids the battery region 13 in the same manner as in the other embodiment 2 (see FIG. 3) described above, so that the outer peripheral circle of the battery region 13 is avoided. It is formed on the outer side. The non-conductive portion 12-4 is provided at a position corresponding to the battery region 13 in which the conductive portion 11-4 is hollowed out, and has substantially the same size and shape as the battery region 13.
The non-conductive portion 12-4 is provided with a non-conductive portion 14 that does not conduct to the conductive portion 11-4 in a circular shape inside the outer circumference of the non-conductive portion 12-4. The non-conducting portion 14 is made of, for example, the same base material as the conductive portion 11-4.
In this case, the capacitance C between the battery 4 and the signal electrode 10-4 in the communication terminal 1-4 is carried out as described above because the non-conducting portion 14 functions in the same manner as the non-conductive portion 12-4. Similar to the example communication terminal 1 (FIG. 1 (A)), it can be regarded as almost 0. Therefore, the communication terminals 1-4 can prevent deterioration of communication performance due to replacement of the battery 4 or the like.
Further, when the signal electrode 10-4 is visible from the outside, for example, when the housing 20 is transparent, the signal electrode 10-4 is apparently a conductive portion 11-4 and a non-conducting portion. Since the signal electrode pattern with 14 seems to be integrated, it can be difficult to distinguish visually.

上述した第1実施形態の通信端末1によれば、以下のような効果を奏する。
通信端末1の信号電極10は、電池4に重なる電池領域13の少なくとも一部に非導電部12を有する。よって、信号電極10と、電池4との間に生じる静電容量Cを、通信性能を劣化させない程度に抑えることができ、電池4の個体差による静電容量Cの値の変化を吸収できる。
According to the communication terminal 1 of the first embodiment described above, the following effects are obtained.
The signal electrode 10 of the communication terminal 1 has a non-conductive portion 12 in at least a part of the battery region 13 overlapping the battery 4. Therefore, the capacitance C generated between the signal electrode 10 and the battery 4 can be suppressed to the extent that the communication performance is not deteriorated, and the change in the value of the capacitance C due to the individual difference of the battery 4 can be absorbed.

(第2実施形態)
次に、第1実施形態と通信端末の構成が異なる第2実施形態について説明する。なお、以降の説明において、上述した第1実施形態と同様の機能を果たす部分には、同一の符号又は末尾に同一の符号を付して、重複する説明を適宜省略する。
図6は、第2実施形態に係る通信端末201を示す図である。図6(A)は、通信端末201の厚み方向Zに平行な断面における断面模式図である。図6(B)は、図6(A)のA-A矢視図である。
図6(A)に示すように、通信端末201は、通信端末1(図1(A))と比較して、電池4が設けられる位置が異なる。電池4は、信号電極210上(-Z側)に設けられている。そのため、通信端末201は、電池4の電流を電界通信部6等に供給するための電源接続部208を備える。また、図6(B)に示すように、信号電極210は、導電部211と、非導電部212と、電池接触部215とにより構成されている。電源接続部208は、電池接触部215を介して電池4に電気的に接続されている。導電部211は、上述の第1実施形態の他の実施例2(図3参照)とほぼ同様に、電池領域13を含まず、電池領域13をくり抜いた残りの部分である。非導電部212は、導電部211を有さない領域であり、電池領域13とほぼ同じ大きさ及び形状になっている。電池接触部215は、非導電部212の領域に設けられている。
この場合、通信端末201は、電池4に重なる位置に、導電部211を有さない。そのため、通信端末201における電池4と、信号電極210との間の静電容量Cは、上述した実施例の通信端末1(図1(A))と同様に、ほぼ0とみなせる。よって、通信端末201は、電池4を交換等したことによる通信性能の劣化を防ぐことができる。
なお、電源接続部208は、信号電極210の導電部211の一部を横切ることになるが、図6(B)に示すように、導電部211とは導通しないように、導電部211が電源接続部208を避けるようにして形成されている。
(Second Embodiment)
Next, a second embodiment in which the configuration of the communication terminal is different from that of the first embodiment will be described. In the following description, the same reference numerals or the same reference numerals will be added to the portions that perform the same functions as those of the first embodiment described above, and duplicate description will be omitted as appropriate.
FIG. 6 is a diagram showing a communication terminal 201 according to the second embodiment. FIG. 6A is a schematic cross-sectional view of the communication terminal 201 in a cross section parallel to the thickness direction Z. FIG. 6B is an arrow view taken along the line AA of FIG. 6A.
As shown in FIG. 6A, the communication terminal 201 is different from the communication terminal 1 (FIG. 1A) in the position where the battery 4 is provided. The battery 4 is provided on the signal electrode 210 (-Z side). Therefore, the communication terminal 201 includes a power supply connection unit 208 for supplying the current of the battery 4 to the electric field communication unit 6 and the like. Further, as shown in FIG. 6B, the signal electrode 210 is composed of a conductive portion 211, a non-conductive portion 212, and a battery contact portion 215. The power connection unit 208 is electrically connected to the battery 4 via the battery contact unit 215. The conductive portion 211 does not include the battery region 13, and is the remaining portion obtained by hollowing out the battery region 13, as in the case of the other embodiment 2 (see FIG. 3) of the first embodiment described above. The non-conductive portion 212 is a region having no conductive portion 211, and has substantially the same size and shape as the battery region 13. The battery contact portion 215 is provided in the region of the non-conductive portion 212.
In this case, the communication terminal 201 does not have the conductive portion 211 at a position overlapping the battery 4. Therefore, the capacitance C between the battery 4 and the signal electrode 210 in the communication terminal 201 can be regarded as almost 0, as in the communication terminal 1 (FIG. 1 (A)) of the above-described embodiment. Therefore, the communication terminal 201 can prevent deterioration of communication performance due to replacement of the battery 4 or the like.
The power supply connection portion 208 crosses a part of the conductive portion 211 of the signal electrode 210, but as shown in FIG. 6B, the conductive portion 211 is used as a power source so as not to conduct with the conductive portion 211. It is formed so as to avoid the connection portion 208.

(他の実施例)
次に、通信端末201に有する信号電極210の他の例について、図7に基づき説明する。
図7は、第2実施形態に係る通信端末201を示す図であり、図6に対応する図である。なお、図7(B)において、電源接続部208の図示は省略している。
(Other Examples)
Next, another example of the signal electrode 210 included in the communication terminal 201 will be described with reference to FIG. 7.
FIG. 7 is a diagram showing the communication terminal 201 according to the second embodiment, and is a diagram corresponding to FIG. 6. Note that, in FIG. 7B, the power connection unit 208 is not shown.

図7(A)に示す通信端末201-1は、上述した通信端末201と同様に、電池4が信号電極210上(-Z側)に設けられたものである。そして、図7(B)に示すように、信号電極210-1は、導電部211-1と、非導電部212-1とにより構成されている。導電部211-1は、上述の第1実施形態の他の実施例2(図3参照)とほぼ同様に、電池領域13を含まず、電池領域13をくり抜いた残りの部分である。非導電部212-1は、導電部211-1がくり抜かれた電池領域13に対応する位置に設けられ、電池領域13とほぼ同じ大きさ及び形状である。
この非導電部212-1には、非導電部212-1の外周よりも内側に、導電部211-1に導通してしない非導通部214と、電池接触部215とを有する。非導通部214は、例えば、導電部211-1と同じ基材により構成されている。非導通部214と、電池接触部215とは、互いに接していない。つまり、非導通部214と、電池接触部215は、非導電部212-1によって囲まれている。
この場合であっても、通信端末201-1における電池4と、信号電極210-1との間の静電容量Cは、上述した実施例の通信端末201(図6)と同様に、ほぼ0とみなせる。よって、通信端末201は、電池4を交換等したことによる通信性能の劣化を防ぐことができる。また、通信端末201-1は、上述した通信端末1-4(図5)と同様に、例えば、筐体20が透明である場合等、信号電極210-1を外観から視認可能な場合には、信号電極210-1は、外見上は、導電部211-1と、非導通部214と、電池接触部215との信号電極パターンが一体になっているように見えるため、見た目には区別が分かりづらいものにできる。
In the communication terminal 211-1 shown in FIG. 7A, the battery 4 is provided on the signal electrode 210 (-Z side) in the same manner as the communication terminal 201 described above. Then, as shown in FIG. 7B, the signal electrode 210-1 is composed of a conductive portion 211-1 and a non-conductive portion 211-1. The conductive portion 211-1 does not include the battery region 13 and is the remaining portion obtained by hollowing out the battery region 13, as in the case of the other embodiment 2 (see FIG. 3) of the first embodiment described above. The non-conductive portion 212-1 is provided at a position corresponding to the battery region 13 in which the conductive portion 211-1 is hollowed out, and has substantially the same size and shape as the battery region 13.
The non-conductive portion 212-1 has a non-conducting portion 214 that does not conduct to the conductive portion 211-1 and a battery contact portion 215 inside the outer circumference of the non-conductive portion 212-1. The non-conducting portion 214 is made of, for example, the same base material as the conductive portion 211-1. The non-conducting portion 214 and the battery contact portion 215 are not in contact with each other. That is, the non-conducting portion 214 and the battery contact portion 215 are surrounded by the non-conductive portion 212-1.
Even in this case, the capacitance C between the battery 4 in the communication terminal 201-1 and the signal electrode 210-1 is almost 0, as in the communication terminal 201 (FIG. 6) of the above-described embodiment. Can be regarded as. Therefore, the communication terminal 201 can prevent deterioration of communication performance due to replacement of the battery 4 or the like. Further, in the communication terminal 211-1, similarly to the above-mentioned communication terminal 1-4 (FIG. 5), when the signal electrode 210-1 can be visually recognized from the outside, for example, when the housing 20 is transparent. In the signal electrode 210-1, the signal electrode patterns of the conductive portion 211-1, the non-conducting portion 214, and the battery contact portion 215 appear to be integrated, so that they can be visually distinguished. It can be difficult to understand.

上述した第2実施形態の通信端末201によれば、以下のような効果を奏する。
通信端末201の信号電極210は、電池4を有するが、電池領域13の少なくとも外周を、信号電極パターンを有さない非導電部212により構成し、電池領域13には、導電部211を有さない。よって、信号電極210と、電池4との間の静電容量Cを低減でき、電界通信の通信性能の劣化を防ぐことができる。結果として、電池4の個体の差による電池の厚み変化を考慮することなく、どのような電池4であっても使用できる。
According to the communication terminal 201 of the second embodiment described above, the following effects are obtained.
The signal electrode 210 of the communication terminal 201 has a battery 4, but at least the outer periphery of the battery region 13 is composed of a non-conductive portion 212 having no signal electrode pattern, and the battery region 13 has a conductive portion 211. do not have. Therefore, the capacitance C between the signal electrode 210 and the battery 4 can be reduced, and deterioration of the communication performance of the electric field communication can be prevented. As a result, any battery 4 can be used without considering the change in the thickness of the battery due to the difference between the individual batteries 4.

(第3実施形態)
次に、上述した各1実施形態と通信端末の構成が異なる第3実施形態について説明する。
図8は、第3実施形態に係る通信端末301を示す図である。図8(A)は、通信端末301の厚み方向Zに平行な断面における断面模式図である。図8(B)は、図8(A)のA-A矢視図である。
(Third Embodiment)
Next, a third embodiment in which the configuration of the communication terminal is different from that of each of the above-described first embodiments will be described.
FIG. 8 is a diagram showing a communication terminal 301 according to the third embodiment. FIG. 8A is a schematic cross-sectional view of the communication terminal 301 in a cross section parallel to the thickness direction Z. FIG. 8B is an arrow view taken along the line AA of FIG. 8A.

図8(A)に示す通信端末301は、上述した通信端末1-2(図3)とほぼ同様であるが、外部より繰り返し充電可能な二次電池である電池305を用いている点で、第1実施形態と異なる。電池305は、例えば、リチウム電池である。
図8(B)に示すように、信号電極310は、導電部311と、非導電部312とにより構成される。導電部311は、電池305に重なる領域である電池領域313を含まず、電池領域313をくり抜いた残りの部分である。また、非導電部312は、導電部311を有さない領域であり、電池領域313とほぼ同じ大きさ及び形状になっている。
この場合、通信端末301における電池305と、信号電極310との間の静電容量Cは、上述した実施例の通信端末1-2(図3)と同様に、ほぼ0とみなせる。よって、通信端末301は、電池305の充放電の繰り返しによる電池の厚み変化によって変化する、静電容量の変化が起因となる通信性能の劣化を防ぐことができる。
The communication terminal 301 shown in FIG. 8A is almost the same as the communication terminal 1-2 (FIG. 3) described above, but uses a battery 305 which is a secondary battery that can be repeatedly charged from the outside. It is different from the first embodiment. The battery 305 is, for example, a lithium battery.
As shown in FIG. 8B, the signal electrode 310 is composed of a conductive portion 311 and a non-conductive portion 312. The conductive portion 311 does not include the battery region 313, which is a region overlapping the battery 305, and is the remaining portion obtained by hollowing out the battery region 313. Further, the non-conductive portion 312 is a region having no conductive portion 311 and has substantially the same size and shape as the battery region 313.
In this case, the capacitance C between the battery 305 and the signal electrode 310 in the communication terminal 301 can be regarded as almost 0, as in the communication terminal 1-2 (FIG. 3) of the above-described embodiment. Therefore, the communication terminal 301 can prevent deterioration of communication performance due to a change in capacitance, which changes due to a change in the thickness of the battery due to repeated charging and discharging of the battery 305.

上述した第3実施形態の通信端末301によれば、以下のような効果を奏する。
通信端末301の信号電極310は、電池領域313を、信号電極パターンを有さない非導電部312により構成する。よって、信号電極310と、電池305との間の静電容量Cを低減でき、電界通信の通信性能の劣化を防ぐことができる。結果として、電池305の充放電による電池の厚み変化を考慮することなく、どのような電池305であっても、継続して使用できる。
According to the communication terminal 301 of the third embodiment described above, the following effects are obtained.
The signal electrode 310 of the communication terminal 301 has a battery area 313 composed of a non-conductive portion 312 having no signal electrode pattern. Therefore, the capacitance C between the signal electrode 310 and the battery 305 can be reduced, and deterioration of the communication performance of the electric field communication can be prevented. As a result, any battery 305 can be continuously used without considering the change in the thickness of the battery due to the charging and discharging of the battery 305.

以上、本発明の実施形態について説明したが、本発明は、上述した実施形態に限定されるものではない。また、実施形態に記載した効果は、本発明から生じる最も好適な効果を列挙したに過ぎず、実施形態に記載したものに限定されない。なお、上述した実施形態及び後述する変形形態は、適宜に組み合わせて用いることもできるが、詳細な説明は省略する。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. Moreover, the effects described in the embodiments are merely a list of the most suitable effects resulting from the present invention, and are not limited to those described in the embodiments. The above-described embodiment and the modified form described later can be used in combination as appropriate, but detailed description thereof will be omitted.

(変形形態)
(1)各実施形態では、電池と信号電極との間に生じる静電容量Cを、非導電部を設けることにより生じさせないようにするものを例に説明したが、これに限定されない。非導電部の位置に重ねて設けるものは、電池以外の導体や誘電体であってもよく、例えば、SD(Secure Digital)メモリカードのようなものであっても、同様の効果を奏することができる。
(Deformed form)
(1) In each embodiment, an example has been described in which the capacitance C generated between the battery and the signal electrode is prevented from being generated by providing a non-conductive portion, but the present invention is not limited to this. What is superposed on the non-conductive portion may be a conductor or a dielectric other than the battery, and even if it is, for example, an SD (Secure Digital) memory card, the same effect can be obtained. can.

(2)各実施形態では、非導通部や、電池接触部は、導通部と同一面であるものを説明したが、これに限定されない。非導通部や、電池接触部を、別層に構成してもよい。 (2) In each embodiment, the non-conducting portion and the battery contact portion have been described as having the same surface as the conductive portion, but the present invention is not limited to this. The non-conducting portion and the battery contact portion may be configured in a separate layer.

(3)各実施形態では、非導電部の形状を、電池領域の形状と同じものを主に説明したが、これに限定されない。非導電部の形状は、電池領域の形状とは異なる形状であってもよい。 (3) In each embodiment, the shape of the non-conductive portion is mainly the same as the shape of the battery region, but the shape is not limited to this. The shape of the non-conductive portion may be different from the shape of the battery region.

1,201,301 通信端末
2 基準電極
3 基板
4,305 電池
6 電界通信部
7 信号接続部
10,210,310 信号電極
11,211,311 導電部
12,212,312 非導電部
13,313 電池領域
14,214 非導通部
208 電源接続部
215 電池接触部
1,201,301 Communication terminal 2 Reference electrode 3 Board 4,305 Battery 6 Electric field communication part 7 Signal connection part 10,210,310 Signal electrode 11,211,311 Conductive part 12,212,312 Non-conductive part 13,313 Battery Area 14,214 Non-conducting part 208 Power connection part 215 Battery contact part

Claims (5)

基準電極に対向する位置に設けられる面状の信号電極と、
前記基準電極と前記信号電極との電位差による電気信号の通信を、伝達可能な通信媒体を介して行う通信部と、
前記信号電極に対向するようにして設けられた導体又は誘電体である容量形成体と、
を備え、
前記信号電極は、電気を通す導電部と、電気を通さない非導電部とを有し、対向する前記容量形成体に重なる領域の少なくとも一部に、非導電部が形成されている、
通信端末。
A planar signal electrode provided at a position facing the reference electrode and
A communication unit that communicates an electric signal due to a potential difference between the reference electrode and the signal electrode via a communicable communication medium.
A capacitance forming body which is a conductor or a dielectric provided so as to face the signal electrode.
Equipped with
The signal electrode has a conductive portion that conducts electricity and a non-conductive portion that does not conduct electricity, and the non-conductive portion is formed in at least a part of a region that overlaps the capacitance forming body that faces the signal electrode.
Communication terminal.
請求項1に記載の通信端末において、
前記非導電部は、切り欠き部である、
通信端末。
In the communication terminal according to claim 1,
The non-conductive portion is a notch portion.
Communication terminal.
請求項1又は請求項2に記載の通信端末において、
前記非導電部は、前記信号電極に導通していない非導通部を有する、
通信端末。
In the communication terminal according to claim 1 or 2.
The non-conductive portion has a non-conductive portion that does not conduct to the signal electrode.
Communication terminal.
請求項1から請求項3までのいずれかに記載の通信端末において、
前記容量形成体は、電池である、
通信端末。
In the communication terminal according to any one of claims 1 to 3.
The capacity forming body is a battery.
Communication terminal.
請求項4に記載の通信端末において、
前記非導電部に、前記容量形成体に接続された電池接触部を有する、
通信端末。
In the communication terminal according to claim 4,
The non-conductive portion has a battery contact portion connected to the capacitance forming body.
Communication terminal.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009017466A (en) 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Casing structure
WO2009104467A1 (en) 2008-02-22 2009-08-27 アルプス電気株式会社 Electronic device for electric field communication
JP2009232284A (en) 2008-03-24 2009-10-08 Nippon Telegr & Teleph Corp <Ntt> Electric field communication device
JP2012037900A (en) 2011-09-26 2012-02-23 Nec Corp Display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009017466A (en) 2007-07-09 2009-01-22 Nippon Telegr & Teleph Corp <Ntt> Casing structure
WO2009104467A1 (en) 2008-02-22 2009-08-27 アルプス電気株式会社 Electronic device for electric field communication
JP2009232284A (en) 2008-03-24 2009-10-08 Nippon Telegr & Teleph Corp <Ntt> Electric field communication device
JP2012037900A (en) 2011-09-26 2012-02-23 Nec Corp Display device

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