JP2004346555A - Electromagnetic shielding panel - Google Patents

Electromagnetic shielding panel Download PDF

Info

Publication number
JP2004346555A
JP2004346555A JP2003142931A JP2003142931A JP2004346555A JP 2004346555 A JP2004346555 A JP 2004346555A JP 2003142931 A JP2003142931 A JP 2003142931A JP 2003142931 A JP2003142931 A JP 2003142931A JP 2004346555 A JP2004346555 A JP 2004346555A
Authority
JP
Japan
Prior art keywords
electromagnetic shielding
film
conductive film
transparent conductive
shielding panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
JP2003142931A
Other languages
Japanese (ja)
Inventor
Masaaki Katano
正昭 片野
Toru Hirotsu
透 弘津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Glass Co Ltd
Original Assignee
Central Glass Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central Glass Co Ltd filed Critical Central Glass Co Ltd
Priority to JP2003142931A priority Critical patent/JP2004346555A/en
Publication of JP2004346555A publication Critical patent/JP2004346555A/en
Abandoned legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost electromagnetic shielding panel with electromagnetic shielding performance of -10 to -30 dB in view of the necessity of electromagnetic shielding performance of -30 dB or more to prevent the malfunction of a computer system in a building and tapping in the case of using the electromagnetic shielding panel to prevent the occurrence of malfunction and noise of electronic equipment used in an OA/communication field or the like, but cost is high due to the use of a transparent plate formed with a metal film of low resistance as the constitution of laminated glass or double glazing for the electromagnetic shielding film with better performance than -30 dB. <P>SOLUTION: A transparent conductive film formed of a tin oxide film is formed on a transparent plate body to form the electromagnetic shielding panel in which the area resistance of the transparent conductive film is in a range of 10-300 ohm/square. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、インテリジェントビルの開口部や間仕切りなどに装着される電磁遮蔽パネルに関し、特に単板で用いる電磁遮蔽パネルに関する。
【0002】
【従来の技術】近年、OA・通信分野などに代表されるように電子機器が不可欠であり、それら機器・装置類が発生する電磁波によって他の電子機器や電子制御機器が誤動作したり、ノイズを発生するケースが多くなっている。特に、高度情報化時代においては窓ガラスから侵入する電磁波が、建物内のコンピューターや通信機器等を誤動作させたり、ノイズ源になっている。また、逆に建物内の電子機器から発生する電磁波が窓ガラスから出ていき、建物の外部の電子機器等を誤動作させたり、ノイズ源になっている。
このような目的で電磁遮蔽パネルを用いる場合、建物内の電算機システムの誤動作や、盗聴を防止するために、ー30dB以上の電磁遮蔽性能が必要とされている。
【0003】
このため、建物の窓に電磁遮蔽性能を付与する、多くの提案がなされている。
【0004】
例えば、特開昭64−5099号報において、2枚の板ガラスの少なくとも一方の板ガラスには導電膜を備え、このような板ガラスを中間膜で接着し、合わせガラスの構成にした電磁遮蔽ガラスが提案されている。
【0005】
特許文献1おいては、2枚のガラスを対向配置し、2枚のガラスで形成される空気層側に透明導電フィルムを設ける電磁遮蔽パネルが提案されている。また、特許文献2において、複層ガラスの空気層側のガラス面に透明導電膜を形成したものが開示されている。
【0006】
また、金属網あるいは透明導電膜をガラスの間に挿入した電磁遮蔽パネルが開示されている(特許文献3、特許文献4、特許文献5)。金属網あるいは透明導電膜を2枚のガラスの間に設けるのは、金属網あるいは透明導電膜を物理的あるいは化学的に保護するためである。
【0007】
近年、通信における周波数が20GHz程度までの高周波域になると、透明導電膜には、電気抵抗の小さい金属膜が用いられている。金属膜は、湿気などによって変質しやすく、これを防ぐため、透明導電膜を設けた透明板状体は、合わせガラスや複層ガラスの構成にして用い、透明導電膜は合わせガラスの中間膜側や、あるいは複層ガラスの空気層側に配置することが重要である。従って、例えば、電磁遮蔽ガラスは、通常の開口部に用いられるガラスに比べ高価となってしまう。
【0008】
他方、建物内の電算機システムの誤動作は、装置の誤動作の許容レベルまでにノイズ源の電波強度を低減させればよく、電磁波ノイズに対する誤動作をしない許容レベルは、汎用コンピューターおよびパーソナルコンピューターで110〜120dB程度である。一般にノイズ源の電磁波の強度は、最大レベルで150dB程度であるが、ノイズ源からの距離による減衰等を考慮して、開口部に求められる電磁遮蔽性能はー10〜―30dBあれば、電磁遮蔽パネルとして使用することができる。
【0009】
また、建物内部において、PHS電話やパーソナルコンピューター(PC)などが構内の無線LANなどに使用され、該無線通信に対するPCやサーバーの誤動作防止や盗聴防止を目的とする場合、電磁遮蔽をする周波数範囲は、20MHz〜5GHzと限定できる。
【0010】
【特許文献1】
実開昭60−183497号公報
【特許文献2】
実開平3−83996号公報
【特許文献3】
特開昭62−112886号公報
【特許文献4】
特開平1−171297号公報
【特許文献5】
特開2000ー119047号公報
【0011】
【発明が解決しようとする課題】
電磁遮蔽性能が−10〜−30dBであるような安価な電磁遮蔽パネルを提供する。
【0012】
【課題を解決するための手段】
本発明の電磁遮蔽パネルは、透明板状体に透明導電膜を形成して電磁遮蔽を行う電磁遮蔽パネルにおいて、透明導電膜が酸化スズ膜であり、該透明導電膜の面積抵抗が10〜300Ω/□の範囲であることを特徴とする電磁遮蔽パネルである。
【0013】
また、本発明の電磁遮蔽パネルは、前記電磁遮蔽パネルにおいて、透明導電膜に保護部材が一体化されていることを特徴とする電磁遮蔽パネルである。
【0014】
【発明の実施の形態】
20〜30MHzの周波数帯においては高出力のトラック無線(CB無線)があり、800MHz〜1GHz、1.5GHz帯における携帯電話および1.9GHz帯のPHS電話、また2.45GHz帯においてはPDA(情報携帯端末)やPCによる無線LAN、さらにまた5GHz帯においてもPCによる無線LANなどのノイズ電波が問題となる。
【0015】
本発明の電磁遮蔽パネルは、図1に示すように透明板状体1に透明導電膜2を形成したものである。
【0016】
透明板状体1には、ソーダ石灰系ガラス、アルミノ珪酸系ガラス、ホウ珪酸系ガラス等の各種板ガラスが使用できる。
【0017】
透明板状体1に形成する透明導電膜2には、酸化スズ膜(通称NESA膜)を用いる。酸化スズ膜は、成膜速度が速く生産効率の高いCVD法(化学的蒸着法)で、透明板状体1の表面に成膜することが好ましい。酸化スズ膜は、CVD法の他に、スプレー法、スパッタリング法、PLD(パルスレーザーデポジッション)法等の方法を用いて成膜することができる。
【0018】
酸化スズ膜でなる透明導電膜は、透明性が高く、耐候性に優れるので、保護膜無しで用いることができる。また、酸化スズ膜のかわりに、Sbあるいは酸化亜鉛を含む酸化スズ系の膜を透明導電膜に用いてもよい。
【0019】
透明導電膜2の面積抵抗は、20MHz〜5GHzの周波数範囲における電磁遮蔽の性能がー10〜ー30dBとなるように、10〜300Ω/□の範囲とすることが好ましい。
【0020】
透明板状体に成膜した酸化スズ膜は、電磁遮蔽の性能が−30dBの場合で、可視光透過率が80%前後と高いため、一般のフロートガラスとの連層窓としても違和感はなく、また熱線主に赤外線を多く反射するため、ビルの冷暖房費の低減化に有効である。
【0021】
なお、本発明の電磁遮蔽パネルは透視性が高いので、外部からの透視を防ぎたい場合には、酸化スズ膜の上に物理的蒸着法(スパッタリング法、真空蒸着法)等によりステンレス鋼や窒化チタン等の薄膜を成膜したり、さらにまた、ゾル・ゲル法による湿式塗布方式を用いて、着色膜を成膜することができる。
【0022】
図5は、枠10に電磁遮蔽パネルを嵌め込み、電磁遮蔽窓としたときの要部断面図である。枠10は、アルミニウム製やステンレス鋼製等の金属で作製された導電性の枠を用いることが好ましい。
【0023】
電磁遮蔽パネルの透明導電膜2と枠10との導通は、導電性を有するバックアップ材9あるいは導電性を有するシーリング材8を用いる。バックアップ材9とシーリング材8の両方に導電性を有する材料を用いてもよく、バックアップ材9とシーリング材8のどちらか一方にのみ、導電性を有する材料を用いてもよい。
【0024】
導電性を有するバックアップ材9に、金属網や金属フィルムをパイプ状にしたものが使用でき、導電性を有するシーリング材8に、金属やカーボン等の導電性材料の粉体をサルファイド系接着剤やシリコーン系接着剤等のシーリング材に混入せしめたものが使用できる。
【0025】
透明導電膜2の面積抵抗が高く、ー10dB程度の要求遮蔽性能であれば、導電性のない通常のバックアップ材やシーリング材を用いてもよい。
【0026】
電磁遮蔽パネルの透明導電膜2に保護部材や透明板状態を接着する場合は、図2に示すように、透明導電膜2を形成した透明板状体1の辺部を導電性被覆材3で囲繞し、透明導電膜2が枠に導通できるようにすることが好ましい。
【0027】
導電性被覆材3は、銅、アルミニウム、SUS、亜鉛およびスズメッキ銅などの金属のフィルムあるいはテープを用いることができる。また前記の金属フィルムあるいはテープに、カーボンまたはニッケルなどの粉体を含有させた導電性の粘着剤を積層したもの、あるいは絶縁性粘着剤を部分的に積層したもの、さらに、前記金属テープに多数の穴を開けて絶縁性粘着剤を積層したもの、さらには金属箔の粘着剤塗布面を凸凹のエンボス状にして導通をとる構造としたものを使用することができる。
【0028】
図3は、接着剤4を用いて、透明導電膜2に保護部材5を接着したものである。保護部材5には、ポリエステルテレフタレートやポリカーボネートなどの透明な樹脂製の、板あるいはフィルムを用いることが望ましい。さらに、図4は、中間膜6を用いて、透明導電膜2に保護部材5として、透明板状体を一体化し、安全・防犯性を向上させたものである。透明板状体に、板ガラスやアクリルあるいはポリカーボネートを用いることが好ましい。
【0029】
【実施例】
以下、図面を参考にしながら本発明を詳細に説明する。
【0030】
実施例1
図1に示すような電磁遮蔽パネルを作製した。透明板状体1には、厚み6mmの板ガラスを用い、透明導電膜2は酸化スズ膜をCVD法で、面積抵抗が30Ω/□になるように形成した。
【0031】
透明導電膜2に対して、JIS R 3221に記載の耐薬品性試験(耐酸、耐アルカリ試験)および耐摩耗試験を実施したところ、可視光透過率および目視観察による外観において、試験の前後に変化がなく、十分な耐候性を有していることを確認した。
【0032】
さらに、作製した電磁遮蔽パネルを図5に示すように、バックアップ材9に導電性を有するバックアップ材を用いて枠体に嵌め込み電磁遮蔽窓としたところ、20MHz〜5GHzの周波数範囲において、ー22dBの電磁遮蔽性能が得られた。なお、シーリング材8にはシリコーン系シーリング材を用いた。
【0033】
比較例1
図1に示す透明板状体1には、厚み6mmの板ガラスを用い、透明導電膜2はステンレス鋼の単層膜をスパッタリング法で、面積抵抗が30Ω/□になるように形成した。
【0034】
形成された透明導電膜2に対して、実施例1と同様に、JIS R 3221に記載の耐薬品性試験(耐酸、耐アルカリ試験)および耐摩耗試験を実施したところ、透明導電膜2に白濁や剥がれ等の欠陥を生じ、十分な耐候性は得られなかった。
【0035】
実施例2
実施例1で作製した電磁遮蔽パネルを用い、図2に示すように、電磁遮蔽パネルの周辺部を導電性被覆材3で囲繞した。導電性被覆材にはアルミテープを用いた。
【0036】
さらに、図3に示すように、ポリエステルテレフタレートのフィルムを保護部材5として透明導電膜2に接着した。
【0037】
保護部材5を接着した電磁遮蔽パネルを、実施例1と同様のシーリング材8とバックアップ材9を用い、図6のように電磁遮蔽窓とした。本実施例においても、実施例1と同様の電磁遮蔽性能が得られた。
【0038】
実施例3
実施例2と同様に、実施例1で作製した電磁遮蔽パネルを用い、図2に示すように、電磁遮蔽パネルの周辺部を導電性被覆材3で囲繞した。導電性被覆材にはアルミテープを用いた。
【0039】
さらに、図4に示すように、中間膜6にポリビニルブチラールを用いて、ポリカーボネートでなる透明板状体7を一体化した。
【0040】
透明板状体7と一体化した電磁遮蔽パネルを、実施例1と同様のシーリング材8、バックアップ材9を用い、図7のように安全・防犯性に優れた電磁遮蔽窓とした。本実施例においても、実施例1と同様の電磁遮蔽性能が得られた。
【0041】
【発明の効果】
本発明の電磁遮蔽パネルは、建物内部のコンピューターの誤動作をおよび情報の漏洩を防ぐための、安価で耐久性のよい電磁遮蔽パネルを提供する。
【図面の簡単な説明】
【図1】透明板状体に透明導電膜を形成した性電磁遮蔽パネルの断面図である。
【図2】導電性被覆材を設けた電磁遮蔽パネルの断面図である。
【図3】保護部材を接着した電磁遮蔽パネルを示す断面図である。
【図4】透明導電膜に透明板状体を接着した電磁遮蔽パネルを示す断面図である。
【図5】窓枠に嵌め込まれた実施例1の電磁遮蔽パネルを示す要部断面図である。
【図6】窓枠に嵌め込まれた実施例2の電磁遮蔽パネルを示す要部断面図である。
【図7】窓枠に嵌め込まれた実施例3の電磁遮蔽パネルを示す要部断面図である。
【符号の説明】
1 板ガラス
2 透明導電膜(NESA膜)
3 導電性被覆材
4 接着剤
5 保護部材
6 接着剤(ポリビニルブチラール膜)
7 透明板状体
8 シーリング材
9 バックアップ材
10 枠
11 セッティングブロック
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electromagnetic shielding panel mounted on an opening or a partition of an intelligent building, and particularly to an electromagnetic shielding panel used as a single plate.
[0002]
2. Description of the Related Art In recent years, electronic devices are indispensable as represented by the OA and communication fields, and other electronic devices and electronic control devices malfunction or generate noise due to electromagnetic waves generated by these devices and devices. The number of cases that occur is increasing. Particularly, in the advanced information age, electromagnetic waves entering from window glass cause computers and communication devices in buildings to malfunction or become noise sources. Conversely, electromagnetic waves generated from electronic devices in the building exit from the window glass, causing electronic devices and the like outside the building to malfunction or become a noise source.
When an electromagnetic shielding panel is used for such a purpose, an electromagnetic shielding performance of -30 dB or more is required in order to prevent a computer system in a building from malfunctioning and eavesdropping.
[0003]
For this reason, many proposals have been made to provide electromagnetic shielding performance to windows of buildings.
[0004]
For example, Japanese Patent Application Laid-Open No. 64-5099 proposes an electromagnetic shielding glass in which at least one of two glass sheets is provided with a conductive film, and such a glass sheet is bonded with an intermediate film to form a laminated glass. Have been.
[0005]
Patent Document 1 proposes an electromagnetic shielding panel in which two glass sheets are arranged to face each other and a transparent conductive film is provided on an air layer side formed by the two glass sheets. Patent Document 2 discloses a multilayer glass in which a transparent conductive film is formed on the glass surface on the air layer side.
[0006]
In addition, an electromagnetic shielding panel in which a metal net or a transparent conductive film is inserted between glass has been disclosed (Patent Literature 3, Patent Literature 4, Patent Literature 5). The reason why the metal net or the transparent conductive film is provided between the two glasses is to protect the metal net or the transparent conductive film physically or chemically.
[0007]
In recent years, when the frequency in communication becomes a high frequency range up to about 20 GHz, a metal film having a small electric resistance is used as the transparent conductive film. The metal film is easily deteriorated by moisture and the like, and in order to prevent this, the transparent plate provided with the transparent conductive film is used in the form of laminated glass or double-layer glass, and the transparent conductive film is formed on the intermediate film side of the laminated glass. It is important to arrange it on the air layer side of the multi-layer glass. Therefore, for example, the electromagnetic shielding glass is more expensive than the glass used for a normal opening.
[0008]
On the other hand, the malfunction of the computer system in the building can be achieved by reducing the radio field intensity of the noise source to the allowable level of the malfunction of the device. The allowable level of the malfunction against the electromagnetic noise is 110 to 110 for general-purpose computers and personal computers. It is about 120 dB. In general, the intensity of the electromagnetic wave from the noise source is about 150 dB at the maximum level, but if the electromagnetic shielding performance required for the opening is −10 to −30 dB in consideration of attenuation due to the distance from the noise source, the electromagnetic shielding Can be used as a panel.
[0009]
Also, when a PHS phone or a personal computer (PC) is used for a wireless LAN in the premises in a building and the purpose is to prevent malfunction or eavesdropping of the PC or server for the wireless communication, a frequency range in which electromagnetic shielding is performed. Can be limited to 20 MHz to 5 GHz.
[0010]
[Patent Document 1]
Japanese Utility Model Publication No. 60-183497 [Patent Document 2]
JP-A-3-83996 [Patent Document 3]
JP-A-62-112886 [Patent Document 4]
JP-A-1-171297 [Patent Document 5]
Japanese Patent Application Laid-Open No. 2000-119047
[Problems to be solved by the invention]
An inexpensive electromagnetic shielding panel having an electromagnetic shielding performance of -10 to -30 dB is provided.
[0012]
[Means for Solving the Problems]
The electromagnetic shielding panel of the present invention is an electromagnetic shielding panel in which a transparent conductive film is formed on a transparent plate to perform electromagnetic shielding, wherein the transparent conductive film is a tin oxide film, and the sheet resistance of the transparent conductive film is 10 to 300 Ω. / □ range.
[0013]
Further, the electromagnetic shielding panel according to the present invention is the electromagnetic shielding panel, wherein the protective member is integrated with the transparent conductive film in the electromagnetic shielding panel.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
In the frequency band of 20 to 30 MHz, there is a high-output track radio (CB radio), a mobile phone in the 800 MHz to 1 GHz and 1.5 GHz bands and a PHS phone in the 1.9 GHz band, and a PDA (information) in the 2.45 GHz band. Noise radio waves such as a wireless LAN by a portable terminal) and a PC, and a wireless LAN by a PC in the 5 GHz band also become problems.
[0015]
The electromagnetic shielding panel of the present invention is such that a transparent conductive film 2 is formed on a transparent plate 1 as shown in FIG.
[0016]
Various plate glasses such as soda-lime glass, aluminosilicate glass, and borosilicate glass can be used for the transparent plate 1.
[0017]
As the transparent conductive film 2 formed on the transparent plate 1, a tin oxide film (commonly called a NESA film) is used. The tin oxide film is preferably formed on the surface of the transparent plate 1 by a CVD method (chemical vapor deposition method) having a high film forming speed and a high production efficiency. The tin oxide film can be formed by a method such as a spray method, a sputtering method, or a PLD (pulse laser deposition) method in addition to the CVD method.
[0018]
A transparent conductive film made of a tin oxide film has high transparency and excellent weather resistance, and thus can be used without a protective film. Instead of the tin oxide film, a tin oxide-based film containing Sb or zinc oxide may be used for the transparent conductive film.
[0019]
The sheet resistance of the transparent conductive film 2 is preferably in the range of 10 to 300 Ω / □ so that the performance of electromagnetic shielding in the frequency range of 20 MHz to 5 GHz is -10 to -30 dB.
[0020]
Since the tin oxide film formed on the transparent plate has an electromagnetic shielding performance of −30 dB and a high visible light transmittance of about 80%, there is no sense of incongruity even as a multi-layer window with general float glass. In addition, since heat rays mainly reflect a large amount of infrared rays, it is effective in reducing the cost of cooling and heating a building.
[0021]
Since the electromagnetic shielding panel of the present invention has high transparency, if it is desired to prevent external transparency, stainless steel or nitride is formed on the tin oxide film by physical vapor deposition (sputtering, vacuum vapor deposition) or the like. A colored film can be formed by forming a thin film of titanium or the like, or by using a wet coating method using a sol-gel method.
[0022]
FIG. 5 is a cross-sectional view of main parts when an electromagnetic shielding panel is fitted into the frame 10 to form an electromagnetic shielding window. As the frame 10, it is preferable to use a conductive frame made of a metal such as aluminum or stainless steel.
[0023]
For conduction between the transparent conductive film 2 and the frame 10 of the electromagnetic shielding panel, a conductive backup material 9 or a conductive sealing material 8 is used. A material having conductivity may be used for both the backup material 9 and the sealing material 8, and a material having conductivity may be used for only one of the backup material 9 and the sealing material 8.
[0024]
As the conductive backup material 9, a pipe made of a metal net or a metal film can be used, and the conductive sealing material 8 is formed by applying a powder of a conductive material such as metal or carbon to a sulfide adhesive or the like. A material mixed with a sealing material such as a silicone adhesive can be used.
[0025]
As long as the sheet resistance of the transparent conductive film 2 is high and the required shielding performance is about -10 dB, a normal non-conductive backup material or sealing material may be used.
[0026]
When the protective member or the transparent plate is bonded to the transparent conductive film 2 of the electromagnetic shielding panel, as shown in FIG. 2, the side of the transparent plate 1 on which the transparent conductive film 2 is formed is coated with the conductive coating material 3. It is preferable to surround the frame so that the transparent conductive film 2 can conduct to the frame.
[0027]
As the conductive coating material 3, a metal film or tape such as copper, aluminum, SUS, zinc, and tin-plated copper can be used. Further, the metal film or tape is laminated with a conductive adhesive containing a powder of carbon or nickel, or is partially laminated with an insulating adhesive. Can be used in which an insulating pressure-sensitive adhesive is laminated by forming a hole, or a structure in which the pressure-sensitive adhesive-coated surface of a metal foil is formed in an uneven embossed shape so as to conduct electricity.
[0028]
FIG. 3 shows that the protective member 5 is bonded to the transparent conductive film 2 using the adhesive 4. As the protective member 5, it is desirable to use a plate or a film made of a transparent resin such as polyester terephthalate or polycarbonate. Further, FIG. 4 shows a structure in which a transparent plate-like body is integrated with the transparent conductive film 2 as the protective member 5 using the intermediate film 6 to improve safety and security. It is preferable to use plate glass, acrylic or polycarbonate for the transparent plate.
[0029]
【Example】
Hereinafter, the present invention will be described in detail with reference to the drawings.
[0030]
Example 1
An electromagnetic shielding panel as shown in FIG. 1 was produced. The transparent plate 1 was made of a 6 mm-thick plate glass, and the transparent conductive film 2 was formed of a tin oxide film by a CVD method so that the sheet resistance was 30 Ω / □.
[0031]
When the chemical resistance test (acid resistance, alkali resistance test) and the wear resistance test described in JIS R 3221 were performed on the transparent conductive film 2, the visible light transmittance and the appearance by visual observation changed before and after the test. No sufficient weather resistance was confirmed.
[0032]
Further, as shown in FIG. 5, the manufactured electromagnetic shielding panel was fitted into a frame using a backup material having conductivity as the backup material 9 to form an electromagnetic shielding window. In a frequency range of 20 MHz to 5 GHz, the electromagnetic shielding window was -22 dB. Electromagnetic shielding performance was obtained. Note that a silicone-based sealing material was used as the sealing material 8.
[0033]
Comparative Example 1
As the transparent plate 1 shown in FIG. 1, a plate glass having a thickness of 6 mm was used, and the transparent conductive film 2 was formed by sputtering a single-layer film of stainless steel so that the sheet resistance was 30 Ω / □.
[0034]
The formed transparent conductive film 2 was subjected to a chemical resistance test (acid resistance and alkali resistance test) and an abrasion resistance test described in JIS R 3221 in the same manner as in Example 1. Defects such as peeling and peeling occurred, and sufficient weather resistance was not obtained.
[0035]
Example 2
Using the electromagnetic shielding panel manufactured in Example 1, the periphery of the electromagnetic shielding panel was surrounded by the conductive coating material 3 as shown in FIG. Aluminum tape was used for the conductive coating material.
[0036]
Further, as shown in FIG. 3, a polyester terephthalate film was adhered to the transparent conductive film 2 as a protective member 5.
[0037]
The electromagnetic shielding panel to which the protective member 5 was bonded was used as an electromagnetic shielding window as shown in FIG. 6 using the same sealing material 8 and backup material 9 as in Example 1. Also in this embodiment, the same electromagnetic shielding performance as that of the first embodiment was obtained.
[0038]
Example 3
As in Example 2, the electromagnetic shielding panel manufactured in Example 1 was used, and the periphery of the electromagnetic shielding panel was surrounded by the conductive coating material 3 as shown in FIG. Aluminum tape was used for the conductive coating material.
[0039]
Further, as shown in FIG. 4, a transparent plate-like body 7 made of polycarbonate was integrated with the intermediate film 6 using polyvinyl butyral.
[0040]
The electromagnetic shielding panel integrated with the transparent plate-like body 7 was used as the electromagnetic shielding window excellent in safety and security as shown in FIG. 7 by using the same sealing material 8 and backup material 9 as in Example 1. Also in this embodiment, the same electromagnetic shielding performance as that of the first embodiment was obtained.
[0041]
【The invention's effect】
The electromagnetic shielding panel of the present invention provides an inexpensive and highly durable electromagnetic shielding panel for preventing malfunction of a computer inside a building and preventing information leakage.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a sex electromagnetic shielding panel in which a transparent conductive film is formed on a transparent plate.
FIG. 2 is a cross-sectional view of an electromagnetic shielding panel provided with a conductive coating material.
FIG. 3 is a sectional view showing an electromagnetic shielding panel to which a protective member is adhered.
FIG. 4 is a cross-sectional view showing an electromagnetic shielding panel in which a transparent plate is adhered to a transparent conductive film.
FIG. 5 is a sectional view of a main part showing the electromagnetic shielding panel of Example 1 fitted in a window frame.
FIG. 6 is a cross-sectional view illustrating a main part of the electromagnetic shielding panel according to the second embodiment fitted in a window frame.
FIG. 7 is a sectional view of a main part showing an electromagnetic shielding panel of Example 3 fitted into a window frame.
[Explanation of symbols]
1 sheet glass 2 transparent conductive film (NESA film)
3 conductive covering material 4 adhesive 5 protective member 6 adhesive (polyvinyl butyral film)
7 Transparent plate 8 Sealing material 9 Backup material 10 Frame 11 Setting block

Claims (2)

透明板状体に透明導電膜を形成して電磁遮蔽を行う電磁遮蔽パネルにおいて、透明導電膜が酸化スズ膜であり、該透明導電膜の面積抵抗が10〜300Ω/□の範囲であることを特徴とする電磁遮蔽パネル。In an electromagnetic shielding panel in which a transparent conductive film is formed on a transparent plate to perform electromagnetic shielding, the transparent conductive film is a tin oxide film, and a sheet resistance of the transparent conductive film is in a range of 10 to 300 Ω / □. Characteristic electromagnetic shielding panel. 透明導電膜に保護部材が一体化されていることを特徴とする請求項1に記載の電磁遮蔽パネル。The electromagnetic shielding panel according to claim 1, wherein the protective member is integrated with the transparent conductive film.
JP2003142931A 2003-05-21 2003-05-21 Electromagnetic shielding panel Abandoned JP2004346555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003142931A JP2004346555A (en) 2003-05-21 2003-05-21 Electromagnetic shielding panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003142931A JP2004346555A (en) 2003-05-21 2003-05-21 Electromagnetic shielding panel

Publications (1)

Publication Number Publication Date
JP2004346555A true JP2004346555A (en) 2004-12-09

Family

ID=33530851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003142931A Abandoned JP2004346555A (en) 2003-05-21 2003-05-21 Electromagnetic shielding panel

Country Status (1)

Country Link
JP (1) JP2004346555A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014212258A (en) * 2013-04-19 2014-11-13 大成建設株式会社 Electromagnetic shielding film attachment tool for electromagnetic shielding window, and electromagnetic shielding window using the same and construction method of electromagnetic shielding window

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014212258A (en) * 2013-04-19 2014-11-13 大成建設株式会社 Electromagnetic shielding film attachment tool for electromagnetic shielding window, and electromagnetic shielding window using the same and construction method of electromagnetic shielding window

Similar Documents

Publication Publication Date Title
US8872703B2 (en) Transparent, flat antenna, suitable for transmitting and receiving electromagnetic waves, method for the production thereof, and use thereof
US4874903A (en) Shielding panel
US20070042819A1 (en) Wireless network shielding system and method
ATE526151T1 (en) CONDUCTIVE LAMINATED BODY, FILM FOR SHIELDING ELECTROMAGNETIC WAVES FOR PLASMA DISPLAY AND PROTECTIVE PLATE FOR PLASMA DISPLAY
CA2022948A1 (en) Electromagnetic shielding panel
KR101470901B1 (en) Heat-reflecting film with the visibility improvement and the thermal barrier and thermal insulation characteristics
RU2701521C2 (en) Glass panel with heating and electromagnetic screening
US20210363053A1 (en) Method for producing an electronic structure on a glass pane and glass sheet having at least one glass pane of this type
WO2007129607A1 (en) Electromagnetic wave absorption board to be used in wireless lan
JP2004346555A (en) Electromagnetic shielding panel
WO2010055787A1 (en) Electromagnetic shielding laminated glass
JP4359451B2 (en) Electromagnetic shielding panel and electromagnetic shielding window
RU2766946C2 (en) Glass with heating threads, having leads on the edge or on the outer side of the glass
JP2000059074A (en) Electromagnetic shielding transparent body
JPH09321484A (en) Electromagnetic shielding glass
CN206579221U (en) A kind of electromagnetic shielding glass
US8507086B2 (en) Seaming tape and method of sealing window film seams
JP2005016159A (en) Electromagnetic shielding panel and electromagnetic shielding window
JP7255179B2 (en) Heat ray shielding laminated glass
JP2005188059A (en) Electromagnetic shielding panel
JP2007297879A (en) Electromagnetic wave absorption plate
JP2009027126A (en) Electromagnetic shielding panel
JP2003152387A (en) Electromagnetic shielding panel
CN208881289U (en) Vacuum interlayer shielding protection glass structure
JP2006282473A (en) Electromagnetic wave shielding glass

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060110

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20060424

A762 Written abandonment of application

Free format text: JAPANESE INTERMEDIATE CODE: A762

Effective date: 20080109