JP2013247645A - Portable information communication terminal - Google Patents

Portable information communication terminal Download PDF

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JP2013247645A
JP2013247645A JP2012122362A JP2012122362A JP2013247645A JP 2013247645 A JP2013247645 A JP 2013247645A JP 2012122362 A JP2012122362 A JP 2012122362A JP 2012122362 A JP2012122362 A JP 2012122362A JP 2013247645 A JP2013247645 A JP 2013247645A
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communication terminal
information communication
portable information
conductive member
circuit board
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Daigo Konno
大悟 今野
Kota Aoki
恒太 青木
Kenji Ogawa
賢二 小川
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a portable information communication terminal capable of reducing SAR without performing transmission control even when the terminal is positioned close to a human body.SOLUTION: The portable information communication terminal comprises: a touch panel 2; a display section 3 disposed below the touch panel 2; a first circuit substrate 9 having a power supply unit 6, which is disposed below the display section 3 and supplies the power to an antenna element 7 via the power supply unit 6; a second circuit substrate 13 disposed below the display section 3, which has a radio section 10 electrically connected to the power supply unit 6; and a conductive member 4 which is disposed between the display section 3 and the first circuit substrate 9 and the second circuit substrate 13 and is electrically connected to the ground of the first circuit substrate 9 and the ground of the second circuit substrate 13. With this configuration, when the portable information communication terminal 1 is placed on lap, since the antenna current flows to the conductive member 4 which is away from the human body, SAR can be reduced.

Description

本発明は、タブレット端末と呼ばれ、平板状の外形を有し、表示部上に透過性のタッチパネルを配置した携帯情報通信端末に関する。   The present invention relates to a portable information communication terminal called a tablet terminal having a flat outer shape and having a transmissive touch panel disposed on a display unit.

上述した携帯情報通信端末に類似する情報機器として、例えば特許文献１〜３に記載されているものがある。特許文献１に記載された“電子計算機”は、電子計算機の傾きを検出する傾きセンサと、第１の筐体部の他方の主面が第２の筐体部と対向して閉じたことを検出するモードセンサとを有し、傾きセンサによって、アンテナが身体に近づく状態になっていることを検出し、かつ、モードセンサが第１の筐体部の他方の主面が第２の筐体部と対向して閉じられたことを検出した場合に、高周波送信信号が所定レベル以上であれば、該高周波送信信号を減衰させてアンテナに出力するようにしている。   As information equipment similar to the above-described portable information communication terminal, for example, there are those described in Patent Documents 1 to 3. The “electronic computer” described in Patent Document 1 is that an inclination sensor that detects the inclination of the electronic computer and that the other main surface of the first casing portion is closed facing the second casing portion. A mode sensor for detecting that the antenna is close to the body by the tilt sensor, and the mode sensor detects that the other main surface of the first casing portion is the second casing. When it is detected that the radio frequency transmission signal is closed facing the unit, if the radio frequency transmission signal is equal to or higher than a predetermined level, the radio frequency transmission signal is attenuated and output to the antenna.

特許文献２に記載された“タブレット式コンピュータ”は、第１〜第３のアンテナを有し、第１のアンテナから第１の周波数の基準信号を送信し、第２のアンテナ及び第３のアンテナそれぞれで受信した基準信号に対するスプリアス信号の受信電力に基づいて、人体といずれかのアンテナが接近しているか否かを判断し、人体が接近していると判断したときは、アンテナから人体を離すことを促すメッセージを表示し、またアンテナからの電波の送信を禁止するようにしている。   The “tablet computer” described in Patent Document 2 includes first to third antennas, transmits a first frequency reference signal from the first antenna, and the second antenna and the third antenna. Based on the received power of the spurious signal with respect to the reference signal received by each, it is determined whether or not the human body and any of the antennas are approaching, and if it is determined that the human body is approaching, move the human body away from the antenna A message that prompts you to do so is displayed, and transmission of radio waves from the antenna is prohibited.

特許文献３に記載された“Electronic device with proximity-based radio power control”は、近接センサを有し、この近接センサが端末の人体頭部への接近を感知したときに、送信電力を調整するようにしている。   “Electronic device with proximity-based radio power control” described in Patent Document 3 includes a proximity sensor, and adjusts transmission power when the proximity sensor senses the approach of the terminal to the human head. I have to.

特開２００９−１５２７０５号公報JP 2009-152705 A 特開２０１０−０４５６９８号公報JP 2010-045698 A 米国特許出願公開第２００９／０３０５７４２号明細書US Patent Application Publication No. 2009/0307422

ところで、タブレット端末と呼ばれる携帯情報通信端末は、比較的大型であることもあって、膝上に置いて使用される場合がある。図１２に従来の携帯情報通信端末の概略構成を示す斜視図、図１３に図１２に示す従来の携帯情報通信端末のＢ−Ｂ線断面図を示す。図１２に示すような従来の携帯情報通信端末１Ｃは、タッチパネル２と、タッチパネル２の下方に配置される表示部３と、表示部３の下方に、アンテナ素子７及び整合回路部５、給電部６が設けられた回路基板１７及び電池１４を収容する箱型の筐体１６とを備える。従来の携帯情報通信端末１Ｃの構成の場合、電波の放射に寄与するアンテナ電流が流れる回路基板１７が膝に最も近い箇所に設けられているため、人体への電波吸収量（ＳＡＲ：Specific Absorption Rate）が高くなるという課題がある。
上述した従来技術では、人体が端末に接近したときに、送信電力を下げたり、送信を停止させたりする等、送信制御を行ってＳＡＲの低減を図っているが、実使用時のデータの伝送品質が低下してしまうという課題がある。
なお、膝上など頭部以外の人体の部位が接近したときのＳＡＲは、ＦＣＣ（Federal Communications Commission：米連邦通信委員会）で規格化されている。 By the way, a portable information communication terminal called a tablet terminal is relatively large and may be used on the knee. FIG. 12 is a perspective view showing a schematic configuration of a conventional portable information communication terminal, and FIG. 13 is a sectional view taken along line BB of the conventional portable information communication terminal shown in FIG. A conventional portable information communication terminal 1 </ b> C as shown in FIG. 12 includes a touch panel 2, a display unit 3 disposed below the touch panel 2, an antenna element 7, a matching circuit unit 5, and a power feeding unit below the display unit 3. 6 is provided with a circuit board 17 provided with 6 and a box-shaped housing 16 for accommodating a battery 14. In the case of the configuration of the conventional portable information communication terminal 1C, the circuit board 17 through which the antenna current that contributes to the radiation of radio waves flows is provided at the location closest to the knee, so the radio wave absorption amount (SAR: Specific Absorption Rate) to the human body. ) Is high.
In the prior art described above, when the human body approaches the terminal, transmission power is reduced or transmission is stopped by performing transmission control to reduce SAR. However, data transmission during actual use is attempted. There is a problem that the quality is degraded.
Note that the SAR when a human body part other than the head, such as above the knee, approaches is standardized by the FCC (Federal Communications Commission).

本発明は、係る事情に鑑みてなされたものであり、人体が接近しても、送信制御することなくＳＡＲの低減を図ることができる携帯情報通信端末を提供することを目的とする。   The present invention has been made in view of such circumstances, and an object thereof is to provide a portable information communication terminal capable of reducing SAR without performing transmission control even when a human body approaches.

本発明の携帯情報通信端末は、タッチパネルと、前記タッチパネルの下方に配置された表示部と、前記表示部の下方に配置され、給電部を有し該給電部を介してアンテナ素子に給電する第１の回路基板と、前記表示部の下方に配置され、前記給電部と電気的に接続された無線部を有する第２の回路基板と、前記表示部と前記第１の回路基板及び前記第２の回路基板との間に配置され、前記第１の回路基板のグランド及び前記第２の回路基板のグランドと電気的に接続された導電性部材と、を備えたことを特徴とする。   The portable information communication terminal according to the present invention includes a touch panel, a display unit disposed below the touch panel, a display unit disposed below the display unit, and a power feeding unit that feeds power to the antenna element through the power feeding unit. A first circuit board, a second circuit board disposed below the display unit and having a wireless unit electrically connected to the power feeding unit, the display unit, the first circuit board, and the second circuit board. And a conductive member that is electrically connected to the ground of the first circuit board and the ground of the second circuit board.

上記構成によれば、表示部の下方に、第１の回路基板と第２の回路基板を配置するとともに、表示部と第１の回路基板及び第２の回路基板との間に第１の回路基板のグランドと第２の回路基板のグランドとを電気的に接続する導電性部材を配置したので、携帯情報通信端末を膝上においた場合、膝から離れた位置にある導電性部材に多くのアンテナ電流が流れることから、ＳＡＲの低減が図れる。このように、人体が接近しても、送信制御することなくＳＡＲの低減を図ることができる。   According to the above configuration, the first circuit board and the second circuit board are disposed below the display unit, and the first circuit is provided between the display unit and the first circuit board and the second circuit board. Since the conductive member that electrically connects the ground of the board and the ground of the second circuit board is disposed, when the portable information communication terminal is placed on the knee, many conductive members are located on the position away from the knee. Since the antenna current flows, SAR can be reduced. Thus, even when a human body approaches, SAR can be reduced without performing transmission control.

上記構成において、前記導電性部材は、前記表示部の側面周囲を覆うことを特徴とする。   The said structure WHEREIN: The said electroconductive member covers the side surface periphery of the said display part, It is characterized by the above-mentioned.

上記構成によれば、導電性部材で表示部の側面周囲を覆うことにより、携帯情報通信端末を膝上で使用する場合に膝から離れた位置にある導電性部材にアンテナ電流が流れるため、表示部側への電波の放射が更に強くなり、ＳＡＲの更なる低減を図ることができる。   According to the above configuration, the antenna current flows through the conductive member located away from the knee when the portable information communication terminal is used on the knee by covering the periphery of the side surface of the display unit with the conductive member. The emission of radio waves to the part side is further increased, and the SAR can be further reduced.

上記構成において、前記導電性部材は側面から見たときの断面がコの字状で、かつ、前記表示部の上面、側面及び下面の３面を覆う形状であることを特徴とする。   In the above configuration, the conductive member has a U-shaped cross section when viewed from the side surface, and has a shape that covers three surfaces of the upper surface, the side surface, and the lower surface of the display portion.

上記構成によれば、導電性部材が側面から見たときの断面がコの字状で、かつ、表示部の上面、側面及び下面の３面を覆うことにより、携帯情報通信端末の厚さ方向に対して表示部より上部にある導電性皮膜で構成されているタッチパネルと電磁結合をし、携帯情報通信端末を膝上で使用する場合に膝から離れた位置にあるタッチパネル側にアンテナ電流が流れるため、更なるＳＡＲの低減を図ることができる。   According to the above configuration, the cross-section when the conductive member is viewed from the side is U-shaped, and covers the top surface, the side surface, and the bottom surface of the display unit, so that the thickness direction of the portable information communication terminal When the mobile information communication terminal is used on the knee, the antenna current flows to the touch panel side located away from the knee when electromagnetically coupled to the touch panel made of a conductive film above the display. Therefore, the SAR can be further reduced.

上記構成において、前記導電性部材は前記タッチパネル方向から見て枠状で、かつ、前記表示部下部にも構成されており、枠内は他の導電性部材で覆われていることを特徴とする。   The said structure WHEREIN: The said electroconductive member is frame shape seeing from the said touch panel direction, and is comprised also in the said display part lower part, The inside of a frame is covered with the other electroconductive member, It is characterized by the above-mentioned. .

上記構成によれば、枠状である導電性部材を他の導電性部材で覆うことにより、携帯情報通信端末を膝上で使用する場合に人体方向への電波の放射が小さくなり、更なるＳＡＲの低減を図ることができる。   According to the above configuration, by covering the frame-shaped conductive member with another conductive member, when the portable information communication terminal is used on the knee, the radiation of the radio wave toward the human body is reduced, and the SAR is further increased. Can be reduced.

本発明によれば、人体が接近しても（例えば、携帯情報通信端末を膝上に置いても）、送信制御することなくＳＡＲの低減を図ることができる。   According to the present invention, even when a human body approaches (for example, even when a portable information communication terminal is placed on a knee), SAR can be reduced without performing transmission control.

本発明の一実施の形態に係る携帯情報通信端末の概略構成を示す斜視図The perspective view which shows schematic structure of the portable information communication terminal which concerns on one embodiment of this invention 図１の携帯情報通信端末を示す５面図FIG. 5 is a five-side view showing the portable information communication terminal of FIG. 図１の携帯情報通信端末と従来の携帯情報通信端末それぞれにおける、天面方向から見た電流分布を示す図The figure which shows the electric current distribution seen from the top | upper surface direction in each of the portable information communication terminal of FIG. 1 and the conventional portable information communication terminal. タッチパネル及び表示部の側面周囲を覆うことができる形状とした導電性部材を有する携帯情報通信端末の概観を示す斜視図The perspective view which shows the external appearance of the portable information communication terminal which has the electroconductive member made into the shape which can cover the side surface periphery of a touchscreen and a display part. 図４のＡ−Ａ線断面図AA line sectional view of FIG. タッチパネル及び表示部の側面周囲を覆うことができる形状とした導電性部材を有する携帯情報通信端末と、前述した導電性部材を有する携帯情報通信端末それぞれにおける左側面を見た電流分布を示す図The figure which shows the electric current distribution which looked at the left side in each of the portable information communication terminal which has the conductive member made into the shape which can cover the side surface periphery of a touch panel and a display part, and the portable information communication terminal which has the conductive member mentioned above. 図４又は図５に示す導電性部材の枠内を他の導電性部材で覆うようにした携帯情報通信端末の概観を示す斜視図The perspective view which shows the general view of the portable information communication terminal which covered the inside of the frame of the electroconductive member shown in FIG. 4 or FIG. 5 with another electroconductive member. 図４又は図５に示す導電性部材の枠内を他の導電性部材で覆うようにした携帯情報通信端末を示す断面図Sectional drawing which shows the portable information communication terminal which covered the inside of the frame of the electroconductive member shown in FIG. 4 or FIG. 5 with another electroconductive member 図７又は図８に示す携帯情報通信端末を膝上に置いた状態を示す斜視図The perspective view which shows the state which put the portable information communication terminal shown in FIG. 7 or FIG. 8 on the knee 図７に示す携帯情報通信端末の放射パターンを示す図The figure which shows the radiation pattern of the portable information communication terminal shown in FIG. 図８に示す携帯情報通信端末の放射パターンを示す図The figure which shows the radiation pattern of the portable information communication terminal shown in FIG. 従来の携帯情報通信端末の概略構成を示す斜視図The perspective view which shows schematic structure of the conventional portable information communication terminal. 図１２のＢ−Ｂ線断面図BB sectional view of FIG.

以下、本発明を実施するための好適な実施の形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings.

図１は、本発明の一実施の形態に係る携帯情報通信端末の概略構成を示す斜視図である。また、図２は、本実施の形態に係る携帯情報通信端末を示す５面図であり、（ａ）は正面視図、（ｂ）は左側面視図、（ｃ）は右側面視図、（ｄ）は天面視図、（ｅ）は背面視図である。   FIG. 1 is a perspective view showing a schematic configuration of a portable information communication terminal according to an embodiment of the present invention. 2 is a five-side view showing the portable information communication terminal according to the present embodiment, where (a) is a front view, (b) is a left-side view, and (c) is a right-side view. (D) is a top view, and (e) is a back view.

図１及び図２において、本実施の形態に係る携帯情報通信端末１は、タッチパネル２と、タッチパネル２の下方に配置される表示デバイス（ＬＣＤ（Liquid Crystal Display）や有機ＥＬ（Electro Luminescence）等）を有する表示部３と、表示部３の下方に配置される枠形状の導電性部材４と、導電性部材４の下方に配置され、整合回路部５、給電部６、アンテナ素子７及び第１の接点部８が設けられた第１の回路基板９と、導電性部材４の下方で、かつ第１の回路基板９から離間した位置に配置され、無線部１０、制御部１１及び第２の接点部１２が設けられた第２の回路基板１３と、導電性部材４の下方に配置された電池１４と、離間配置された第１の回路基板９と第２の回路基板１３を電気的に接続する同軸ケーブル１５と、タッチパネル２、表示部３、導電性部材４、第１の回路基板９、第２の回路基板１３、電池１４及び同軸ケーブル１５を収容する箱型の筐体１６とを備える。   1 and 2, a portable information communication terminal 1 according to the present embodiment includes a touch panel 2 and a display device (LCD (Liquid Crystal Display), organic EL (Electro Luminescence), etc.) disposed below the touch panel 2. , A frame-shaped conductive member 4 disposed below the display unit 3, a matching circuit unit 5, a power feeding unit 6, an antenna element 7, and a first element disposed below the conductive member 4. The first circuit board 9 provided with the contact portion 8 is disposed below the conductive member 4 and at a position separated from the first circuit board 9, and the radio unit 10, the control unit 11, and the second circuit unit 9 are disposed. The second circuit board 13 provided with the contact portion 12, the battery 14 disposed below the conductive member 4, and the first circuit board 9 and the second circuit board 13 that are spaced apart are electrically connected. Coaxial cable 15 to be connected, touch panel 2, display Comprising 3 conductive member 4, the first circuit board 9, the second circuit board 13, a housing 16 of the box-shaped housing the battery 14 and the coaxial cable 15.

タッチパネル２及び表示部３は、第２の回路基板１３と電気的に接続されている。第１の回路基板９において、アンテナ素子７は給電部６に接続されており、給電部６は整合回路部５に接続されている。整合回路部５は、同軸ケーブル１５を介して第２の回路基板１３の無線部１０に接続されている。第１の接点部８は、第１の回路基板９のグランドと導電性部材４を接続するものである。第１の接点部８は、筐体１６に導電性部材４が収容されることで、導電性部材４と第１の回路基板９のグランドとを電気的に接続する。   The touch panel 2 and the display unit 3 are electrically connected to the second circuit board 13. In the first circuit board 9, the antenna element 7 is connected to the power feeding unit 6, and the power feeding unit 6 is connected to the matching circuit unit 5. The matching circuit unit 5 is connected to the radio unit 10 of the second circuit board 13 via the coaxial cable 15. The first contact 8 connects the ground of the first circuit board 9 and the conductive member 4. The first contact portion 8 electrically connects the conductive member 4 and the ground of the first circuit board 9 by accommodating the conductive member 4 in the housing 16.

第２の回路基板１３において、無線部１０は、ＲＦ信号入出力端（図示略）が同軸ケーブル１５を介して第１の回路基板９の整合回路部５に接続される。また、無線部１０は、制御部１１と接続されており、制御部１１によって送受信制御される。第２の接点部１２は、第２の回路基板１３のグランドと導電性部材４を接続するものである。第２の接点部１２は、筐体１６に導電性部材４が収容されることで、導電性部材４と第２の回路基板１３のグランドとを電気的に接続する。   In the second circuit board 13, the radio unit 10 has an RF signal input / output end (not shown) connected to the matching circuit unit 5 of the first circuit board 9 via the coaxial cable 15. The radio unit 10 is connected to the control unit 11 and is controlled to be transmitted and received by the control unit 11. The second contact 12 connects the ground of the second circuit board 13 and the conductive member 4. The second contact portion 12 electrically connects the conductive member 4 and the ground of the second circuit board 13 by accommodating the conductive member 4 in the housing 16.

表示部３の下方に導電性部材４を配置し、導電性部材４と第１の回路基板９のグランドを第１の接点部８を介して電気的に接続し、また導電性部材４と第２の回路基板１３を第２の接点部１２を介して電気的に接続することで、送信時に、第１の回路基板９と第２の回路基板１３に流れるアンテナ電流が導電性部材４に流れ、更に導電性部材４に流れたアンテナ電流がタッチパネル２の金属蒸着膜にも流れる。したがって、携帯情報通信端末１を膝上に置いた場合、電波放射に寄与するアンテナ電流が膝から離れた位置を流れることになり、ＳＡＲが低減する。   The conductive member 4 is disposed below the display unit 3, the conductive member 4 and the ground of the first circuit board 9 are electrically connected via the first contact portion 8, and the conductive member 4 and the first circuit board 9 are electrically connected to each other. By electrically connecting the two circuit boards 13 via the second contact portion 12, the antenna current flowing in the first circuit board 9 and the second circuit board 13 flows in the conductive member 4 during transmission. Furthermore, the antenna current that has flowed through the conductive member 4 also flows through the metal vapor deposition film of the touch panel 2. Therefore, when the portable information communication terminal 1 is placed on the knee, the antenna current contributing to radio wave radiation flows through a position away from the knee, and SAR is reduced.

図３は、本実施の形態に係る携帯情報通信端末１と従来の携帯情報通信端末１００それぞれにおける、天面方向から見た電流分布を示す図であり、（ａ）は携帯情報通信端末１における電流分布、（ｂ）は従来の携帯情報通信端末１００における電流分布である。なお、従来の携帯情報通信端末１００のタッチパネル、表示部及びアンテナ素子は、本実施の形態に係る携帯情報通信端末１のものと同様であるので、同一の符号を付けている。同図の（ａ），（ｂ）それぞれにおける矢印は、アンテナ電流の大きさと方向を示している。   FIG. 3 is a diagram illustrating a current distribution viewed from the top surface direction in each of the portable information communication terminal 1 according to the present embodiment and the conventional portable information communication terminal 100, and (a) in the portable information communication terminal 1. Current distribution, (b) is a current distribution in the conventional portable information communication terminal 100. Note that the touch panel, the display unit, and the antenna element of the conventional portable information communication terminal 100 are the same as those of the portable information communication terminal 1 according to the present embodiment, and thus are given the same reference numerals. The arrows in (a) and (b) of FIG. 6 indicate the magnitude and direction of the antenna current.

従来の携帯情報通信端末１００おいて、回路基板１０１の上方にタッチパネル２と表示部３が配置されており、また回路基板１０１の図面に向かって右端部分にアンテナ素子７が配置されている。従来の携帯情報通信端末１００では、回路基板１０１側により多くのアンテナ電流が流れているが、本実施の形態に係る携帯情報通信端末１では、タッチパネル２側により多くのアンテナ電流が流れているのが分かる。本実施の形態に係る携帯情報通信端末１を膝上に置いた場合、膝から離れた位置でアンテナ電流が流れることになる。   In the conventional portable information communication terminal 100, the touch panel 2 and the display unit 3 are disposed above the circuit board 101, and the antenna element 7 is disposed at the right end portion of the circuit board 101 as viewed in the drawing. In conventional portable information communication terminal 100, a large amount of antenna current flows on the circuit board 101 side, but in portable information communication terminal 1 according to the present embodiment, a large amount of antenna current flows on the touch panel 2 side. I understand. When portable information communication terminal 1 according to the present embodiment is placed on the knee, the antenna current flows at a position away from the knee.

このように本実施の形態に係る携帯情報通信端末１は、タッチパネル２と、タッチパネル２の下方に配置された表示部３と、表示部３の下方に配置され、給電部６を有し該給電部６を介してアンテナ素子７に給電する第１の回路基板９と、表示部３の下方に配置され、給電部６と電気的に接続された無線部１０を有する第２の回路基板１３と、表示部３と第１の回路基板９及び第２の回路基板１３との間に配置され、第１の回路基板９のグランド及び第２の回路基板１３のグランドと電気的に接続された導電性部材４と、を備えたので、送信時に、タッチパネル２側により多くのアンテナ電流が流れるようになり、携帯情報通信端末１を膝上においた場合、人体が受けるアンテナ電流による影響を低減できる。即ち、ＳＡＲの低減が図れる。このように、携帯情報通信端末１に人体が接近しても、送信制御することなくＳＡＲの低減を図ることができる。   As described above, the portable information communication terminal 1 according to the present embodiment includes the touch panel 2, the display unit 3 disposed below the touch panel 2, and the power supply unit 6 disposed below the display unit 3. A first circuit board 9 that feeds power to the antenna element 7 via the unit 6, and a second circuit board 13 that is disposed below the display unit 3 and has a wireless unit 10 that is electrically connected to the power feeding unit 6. The conductive portion disposed between the display unit 3 and the first circuit board 9 and the second circuit board 13 and electrically connected to the ground of the first circuit board 9 and the ground of the second circuit board 13. Since the antenna member 4 is provided, a large amount of antenna current flows on the touch panel 2 side during transmission, and when the portable information communication terminal 1 is placed on the knee, the influence of the antenna current on the human body can be reduced. That is, SAR can be reduced. Thus, even if a human body approaches the portable information communication terminal 1, it is possible to reduce the SAR without performing transmission control.

なお、本実施の形態に係る携帯情報通信端末１において、導電性部材４を、タッチパネル２及び表示部３の側面周囲を覆う形状としても良い。図４は、タッチパネル２及び表示部３の側面周囲を覆うことができる形状とした導電性部材４Ａを有する携帯情報通信端末１Ａの概観を示す斜視図、図５は、図４のＡ−Ａ線断面図である。図５に示すように、導電性部材４Ａの周縁部が断面コ字状になっており、当該部分でタッチパネル２及び表示部３の側面周囲を覆っている。導電性部材４Ａでタッチパネル２及び表示部３の側面周囲を覆うことで、第１の回路基板９及び第２の回路基板１３に流れるアンテナ電流が導電性部材４Ａを通じて携帯情報通信端末１の厚み方向にも流れるため、表示部３側への電波の放射が更に強くなり、ＳＡＲの更なる低減を図ることができる。   In the portable information communication terminal 1 according to the present embodiment, the conductive member 4 may have a shape that covers the periphery of the side surfaces of the touch panel 2 and the display unit 3. 4 is a perspective view showing an overview of a portable information communication terminal 1A having a conductive member 4A having a shape capable of covering the side surfaces of the touch panel 2 and the display unit 3, and FIG. 5 is a line AA in FIG. It is sectional drawing. As shown in FIG. 5, the periphery of the conductive member 4 </ b> A has a U-shaped cross section, and covers the periphery of the side surfaces of the touch panel 2 and the display unit 3. By covering the periphery of the side surfaces of the touch panel 2 and the display unit 3 with the conductive member 4A, the antenna current flowing through the first circuit board 9 and the second circuit board 13 is passed through the conductive member 4A in the thickness direction of the portable information communication terminal 1. Therefore, the emission of radio waves to the display unit 3 side becomes stronger, and the SAR can be further reduced.

図６は、タッチパネル２及び表示部３の側面周囲を覆うことができる形状とした導電性部材４Ａを有する携帯情報通信端末１Ａと、前述した導電性部材４を有する携帯情報通信端末１それぞれにおける左側面を見た電流分布を示す図であり、（ａ）は携帯情報通信端末１Ａにおける電流分布、（ｂ）は携帯情報通信端末１における電流分布である。なお、図の（ａ）では、タッチパネル２及び表示部３は省略している。同図の（ａ），（ｂ）それぞれにおける矢印は、アンテナ電流の大きさと方向を示している。   FIG. 6 shows the left side of each of the portable information communication terminal 1A having the conductive member 4A having a shape capable of covering the periphery of the side surfaces of the touch panel 2 and the display unit 3, and the portable information communication terminal 1 having the conductive member 4 described above. It is a figure which shows the current distribution which looked at the surface, (a) is the current distribution in 1 A of portable information communication terminals, (b) is the current distribution in the portable information communication terminal 1. FIG. Note that the touch panel 2 and the display unit 3 are omitted in FIG. The arrows in (a) and (b) of FIG. 6 indicate the magnitude and direction of the antenna current.

タッチパネル２は導体素子であるため、タッチパネル２にもアンテナ電流が流れるが、タッチパネル２及び表示部３の側面周囲を覆う形状の導電性部材４Ａを使用することで、アンテナ電流が導電性部材４Ａを通じて携帯情報通信端末１Ａの厚み方向にも流れる。このため、表示部３側への電波の放射が更に強くなり、ＳＡＲの更なる低減が図れる。   Since the touch panel 2 is a conductor element, an antenna current also flows through the touch panel 2, but by using the conductive member 4A having a shape that covers the periphery of the side surface of the touch panel 2 and the display unit 3, the antenna current passes through the conductive member 4A. It also flows in the thickness direction of the portable information communication terminal 1A. For this reason, the radiation | emission of the electromagnetic wave to the display part 3 side becomes still stronger, and the further reduction of SAR can be aimed at.

また、本実施の形態に係る携帯情報通信端末１において、枠形状の導電性部材４の枠内を他の導電性部材で覆うようにしても良い。図７は、図４又は図５に示す枠形状の導電性部材４Ａのタッチパネル２及び表示部３側と反対側即ち第１，第２の回路基板９，１３側で表示部３が導電性部材４Ａで覆われていない箇所を他の導電性部材で覆うようにした携帯情報通信端末１Ｂの概観を示す斜視図である。また、図８は、図４又は図５に示す導電性部材４Ａで表示部３が覆われていない箇所を他の導電性部材で覆うようにした携帯情報通信端末１Ｂを示す断面図である。図７及び図８に示すように、枠形状の導電性部材４Ａのタッチパネル２及び表示部３側と反対側即ち第１，第２の回路基板９，１３側で表示部３が導電性部材４Ａで覆われていない箇所をシート状の導電性部材２０で覆っている。導電性部材２０で導電性部材４Ａの枠内を覆うことで、人体方向への電波の放射が更に少なくなり、ＳＡＲの更なる低減を図ることができる。なお、図８は、携帯情報通信端末１Ｂを金属板２１に置いた状態を示している。   Moreover, in the portable information communication terminal 1 according to the present embodiment, the inside of the frame-shaped conductive member 4 may be covered with another conductive member. 7 shows the conductive member 4A having a frame shape shown in FIG. 4 or FIG. 5 on the side opposite to the touch panel 2 and the display unit 3 side, that is, on the first and second circuit boards 9 and 13 side. It is a perspective view which shows the external appearance of the portable information communication terminal 1B which covered the location which is not covered with 4A with another electroconductive member. FIG. 8 is a cross-sectional view showing a portable information communication terminal 1B in which a portion where the display unit 3 is not covered with the conductive member 4A shown in FIG. 4 or 5 is covered with another conductive member. As shown in FIGS. 7 and 8, the display unit 3 is electrically conductive member 4A on the side opposite to the touch panel 2 and display unit 3 side of the frame-shaped conductive member 4A, that is, on the first and second circuit boards 9 and 13 side. The portion not covered with is covered with a sheet-like conductive member 20. By covering the inside of the frame of the conductive member 4A with the conductive member 20, radiation of radio waves toward the human body is further reduced, and SAR can be further reduced. 8 shows a state where the portable information communication terminal 1B is placed on the metal plate 21.

図９は、前述した携帯情報通信端末１Ｂを膝上に置いた状態を示す斜視図である。図１０は、図７に示す携帯情報通信端末１Ｂの放射パターンを示す図であり、（ａ）は導電性部材４Ａに導電性部材２０を設けていないときの放射パターン、（ｂ）は導電性部材４Ａに導電性部材２０を設けたときの放射パターンである。また、同図（ａ）及び（ｂ）に示すＥθは電界強度のθ方向成分である。同図の（ａ）及び（ｂ）において、上側は表示部３側の方向、下側は人体側（膝側）の方向である。点線で囲った部分３０，３１から分かるように、導電性部材２０で導電性部材４Ａの枠内を塞ぐことにより、導電性部材４Ａの枠内が他の導電性部材で塞がれていない場合と比較して、人体方向への電波の放射が少なくなっている。人体方向への電波の放射が少なくなることで、ＳＡＲが低減する。 FIG. 9 is a perspective view showing a state in which the above-described portable information communication terminal 1B is placed on the knee. 10A and 10B are diagrams showing a radiation pattern of the portable information communication terminal 1B shown in FIG. 7, in which FIG. 10A is a radiation pattern when the conductive member 20 is not provided on the conductive member 4A, and FIG. This is a radiation pattern when the conductive member 20 is provided on the member 4A. Further, E θ shown in FIGS. 4A and 4B is a θ direction component of electric field strength. In (a) and (b) of the figure, the upper side is the direction on the display unit 3 side, and the lower side is the direction on the human body side (knee side). As can be seen from the portions 30 and 31 surrounded by the dotted line, the inside of the frame of the conductive member 4A is not closed by another conductive member by closing the inside of the frame of the conductive member 4A with the conductive member 20 Compared with, the radiation of radio waves toward the human body is reduced. SAR is reduced by reducing the radiation of radio waves toward the human body.

図１１は、図８に示す携帯情報通信端末１Ｂ（即ち、携帯情報通信端末１Ｂを金属板２１に置いたとき）の放射パターンを示す図であり、（ａ）は導電性部材４Ａに導電性部材２０を設けていないときの放射パターン、（ｂ）は導電性部材４Ａに導電性部材２０を設けたときの放射パターンである。また、同図（ａ）及び（ｂ）に示すＥθは電界強度のθ方向成分、Ｅφは電界強度のφ方向成分である。同図の（ａ）及び（ｂ）において、上側は表示部３側の方向、下側は金属板２１側の方向である。導電性部材２０で導電性部材４Ａの枠内を塞ぐことにより、導電性部材４Ａの枠内が他の導電性部材で塞がれていない場合と比較して、金属板２１上に携帯情報通信端末１Ｂを置いたときに表示部３側の方向の放射が強くなり、アンテナ特性が向上する。 FIG. 11 is a diagram showing a radiation pattern of the portable information communication terminal 1B shown in FIG. 8 (that is, when the portable information communication terminal 1B is placed on the metal plate 21), and FIG. A radiation pattern when the member 20 is not provided, and (b) is a radiation pattern when the conductive member 20 is provided on the conductive member 4A. Further, E θ shown in FIGS. 4A and 4B is a θ direction component of electric field strength, and E φ is a φ direction component of electric field strength. In (a) and (b) of the figure, the upper side is the direction on the display unit 3 side, and the lower side is the direction on the metal plate 21 side. By closing the inside of the frame of the conductive member 4A with the conductive member 20, compared with the case where the inside of the frame of the conductive member 4A is not closed with another conductive member, the portable information communication on the metal plate 21 When the terminal 1B is placed, radiation in the direction of the display unit 3 becomes stronger, and the antenna characteristics are improved.

本発明は、人体が接近しても、送信制御することなくＳＡＲの低減を図ることができるといった効果を有し、タブレット端末と呼ばれる携帯情報通信端末への適用が可能である。   The present invention has an effect that SAR can be reduced without performing transmission control even when a human body approaches, and can be applied to a portable information communication terminal called a tablet terminal.

１，１Ａ，１Ｂ 携帯情報通信端末
２ タッチパネル
３ 表示部
４，４Ａ，２０ 導電性部材
５ 整合回路部
６ 給電部
７ アンテナ素子
８ 第１の接点部
９ 第１の回路基板
１０ 無線部
１１ 制御部
１２ 第２の接点部
１３ 第２の回路基板
１４ 電池
１５ 同軸ケーブル
１６ 筐体 1, 1A, 1B Mobile information communication terminal 2 Touch panel 3 Display unit 4, 4A, 20 Conductive member 5 Matching circuit unit 6 Power feeding unit 7 Antenna element 8 First contact unit 9 First circuit board 10 Radio unit 11 Control unit 12 Second contact portion 13 Second circuit board 14 Battery 15 Coaxial cable 16 Housing

Claims (4)

タッチパネルと、
前記タッチパネルの下方に配置された表示部と、
前記表示部の下方に配置され、給電部を有し該給電部を介してアンテナ素子に給電する第１の回路基板と、
前記表示部の下方に配置され、前記給電部と電気的に接続された無線部を有する第２の回路基板と、
前記表示部と前記第１の回路基板及び前記第２の回路基板との間に配置され、前記第１の回路基板のグランド及び前記第２の回路基板のグランドと電気的に接続された導電性部材と、
を備えたことを特徴とする携帯情報通信端末。 A touch panel;
A display unit disposed below the touch panel;
A first circuit board disposed below the display unit and having a power feeding unit and feeding power to the antenna element through the power feeding unit;
A second circuit board disposed below the display unit and having a wireless unit electrically connected to the power feeding unit;
Conductivity disposed between the display unit and the first circuit board and the second circuit board, and electrically connected to the ground of the first circuit board and the ground of the second circuit board. Members,
A portable information communication terminal comprising: 請求項１に記載の携帯情報通信端末であって、
前記導電性部材は、前記表示部の側面周囲を覆うことを特徴とする携帯情報通信端末。 The portable information communication terminal according to claim 1,
The portable information communication terminal, wherein the conductive member covers a periphery of a side surface of the display unit. 請求項１又は請求項２に記載の携帯情報通信端末であって、
前記導電性部材は側面から見たときの断面がコの字状で、かつ、前記表示部の上面、側面及び下面の３面を覆う形状であることを特徴とする携帯情報通信端末。 The portable information communication terminal according to claim 1 or 2,
A portable information communication terminal characterized in that the conductive member has a U-shaped cross section when viewed from the side, and has a shape covering the upper surface, the side surface, and the lower surface of the display unit. 請求項１ないし請求項３のいずれか一項に記載の携帯情報通信端末であって、
前記導電性部材は前記タッチパネル方向から見て枠状で、かつ、前記表示部下部にも構成されており、枠内は他の導電性部材で覆われていることを特徴とする携帯情報通信端末。 The portable information communication terminal according to any one of claims 1 to 3,
The portable information communication terminal, wherein the conductive member has a frame shape when viewed from the touch panel direction and is also formed at the lower portion of the display unit, and the frame is covered with another conductive member. .
JP2012122362A 2012-05-29 2012-05-29 Portable information communication terminal Pending JP2013247645A (en)

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CN105027354A (en) * 2014-01-28 2015-11-04 华为技术有限公司 Antenna system, small cell, terminal and method for separating two antennas
WO2017141600A1 (en) * 2016-02-18 2017-08-24 パナソニックＩｐマネジメント株式会社 Antenna device and electronic apparatus
JP2021524695A (en) * 2018-06-26 2021-09-13 エイブイエックス・アンテナ・インコーポレーテッド Methods and systems for controlling modal antennas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105027354A (en) * 2014-01-28 2015-11-04 华为技术有限公司 Antenna system, small cell, terminal and method for separating two antennas
WO2017141600A1 (en) * 2016-02-18 2017-08-24 パナソニックＩｐマネジメント株式会社 Antenna device and electronic apparatus
US10651540B2 (en) 2016-02-18 2020-05-12 Panasonic Intellectual Property Management Co., Ltd. Antenna unit and electronic device
US11011824B2 (en) 2016-02-18 2021-05-18 Panasonic Intellectual Property Management Co., Ltd. Antenna unit and electronic device
US11527811B2 (en) 2016-02-18 2022-12-13 Panasonic Intellectual Property Management Co., Ltd. Antenna unit and electronic device
JP2021524695A (en) * 2018-06-26 2021-09-13 エイブイエックス・アンテナ・インコーポレーテッド Methods and systems for controlling modal antennas
JP7050968B2 (en) 2018-06-26 2022-04-08 エイブイエックス・アンテナ・インコーポレーテッド Methods and systems for controlling modal antennas

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