JPH046662B2 - - Google Patents
Info
- Publication number
- JPH046662B2 JPH046662B2 JP18812383A JP18812383A JPH046662B2 JP H046662 B2 JPH046662 B2 JP H046662B2 JP 18812383 A JP18812383 A JP 18812383A JP 18812383 A JP18812383 A JP 18812383A JP H046662 B2 JPH046662 B2 JP H046662B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- electromagnetic shielding
- thin film
- window glass
- transparent conductive
- 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.)
- Expired
Links
- 239000010408 film Substances 0.000 claims description 71
- 239000010409 thin film Substances 0.000 claims description 59
- 239000005357 flat glass Substances 0.000 claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 claims description 29
- 239000011521 glass Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 17
- 239000000377 silicon dioxide Substances 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 2
- 229910003437 indium oxide Inorganic materials 0.000 claims description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000006104 solid solution Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 4
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- QCCDYNYSHILRDG-UHFFFAOYSA-K cerium(3+);trifluoride Chemical compound [F-].[F-].[F-].[Ce+3] QCCDYNYSHILRDG-UHFFFAOYSA-K 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Window Of Vehicle (AREA)
- Surface Treatment Of Glass (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 本発明は電磁遮蔽ウインドガラスに関する。[Detailed description of the invention] 〔Technical field〕 The present invention relates to electromagnetic shielding window glass.
本発明の電磁遮蔽ウインドガラスは、車両、航
空機、建築物のウインドガラスに用いることがで
きる。例えば、自動車用窓ガラスに本発明の電磁
遮蔽ウインドガラスを用いると、車載電子機器に
対する外来電波によるノイズ（EMI：電磁干渉）
を防止できると共に、日射の車室内への侵入を抑
制することができ、更には良好な視界の確保がで
き、ノイズの防止、車室内温度の上昇防止等に有
用である。 The electromagnetic shielding window glass of the present invention can be used for vehicle, aircraft, and building window glasses. For example, if the electromagnetic shielding window glass of the present invention is used in an automobile window glass, noise (EMI: electromagnetic interference) caused by external radio waves to the in-vehicle electronic equipment may occur.
In addition, it is possible to prevent solar radiation from entering the vehicle interior, and furthermore, it is possible to ensure good visibility, which is useful for preventing noise, preventing a rise in vehicle interior temperature, etc.
自動車等においては、ウインドガラスを通して
外来電波が侵入する。この外来電波は、車載電子
機器に対してノイズとなる場合がある。従来はか
かるEMIを防止するため、車載電子機器個々で
耐EMI性の対策がなされており、ウインドガラ
ス自体には何等対策が施されていなかつた。従つ
て、EMI対策用の電子部品が備え、コスト増の
原因となつていた。
In automobiles, external radio waves enter through the window glass. This external radio wave may become noise to in-vehicle electronic equipment. Conventionally, in order to prevent such EMI, EMI resistance measures have been taken for each in-vehicle electronic device, and no measures have been taken for the window glass itself. Therefore, electronic components for EMI countermeasures are required, which causes an increase in costs.
また、日射により車内温度が上昇し、特に夏場
または日中の駐車時等において、エアコンの効き
不良等により乗車時に不快感が大きいという問題
があつた。従来、かかる対策として、採光には影
響の少ない赤外線域の波長を反射する熱線反射膜
を自動車のウインドガラスに設けたものがある
が、まだ十分とは言えなかつた。 In addition, the temperature inside the vehicle increases due to solar radiation, and there is a problem in that the ineffectiveness of the air conditioner causes great discomfort when riding, especially in the summer or when parking during the day. Conventionally, as a countermeasure against this problem, a heat ray reflecting film that reflects wavelengths in the infrared region, which has little effect on sunlight, has been provided on the windshield of an automobile, but this has not yet been sufficient.
また、ユーザー指向の多様化により、メータ類
が増え、これに伴い夜間における照明装置の増加
や光度の増加が行われている。この結果、フロン
ト窓ガラスやサイドウインドガラスに反射像をつ
くり、運転視野を妨げる場合がある。これらは、
レオスタツト（夜間走行時のメータ類およびイン
ストルメントパネルの照度を自由にコントロール
する装置）を設けたり、メータフードやパネルの
形状を工夫することにより対応することができる
ものの、根本的な解決とはなつていない。 Furthermore, due to the diversification of user preferences, the number of meters has increased, and this has led to an increase in the number of lighting devices and an increase in luminous intensity at night. As a result, a reflected image may be created on the front windshield or side window glass, obstructing the driver's field of vision. these are,
This can be countered by installing a rheostat (a device that freely controls the illuminance of the meters and instrument panel when driving at night) or by modifying the shape of the meter hood and panel, but this is not a fundamental solution. Not yet.
このため、ウインドガラス自体で上記問題を解
決することが望まれていた。 Therefore, it has been desired to solve the above problem with the window glass itself.
本発明は上記従来技術の問題を解決するために
なされたもので、電磁波を遮蔽すると共に赤外線
の侵入を大幅に抑止でき、かつガラス映りを防止
できる電磁遮蔽ウインドガラスを提供することを
目的とする。
The present invention has been made in order to solve the above-mentioned problems of the prior art, and aims to provide an electromagnetic shielding window glass that can shield electromagnetic waves, significantly inhibit the intrusion of infrared rays, and prevent reflections on the glass. .
かかる目的は、本発明によれば、ガラス基板の
使用時における外側面に、電磁遮蔽用透明導電性
薄膜と熱線反射膜がこの順に積層され、一方ガラ
ス基板の使用時における内側面に、電磁遮蔽用透
明導電性薄膜と可視光線の反射防止膜がこの順に
積層されていることを特徴とする電磁遮蔽ウイン
ドガラスによつて達成される。
According to the present invention, a transparent conductive thin film for electromagnetic shielding and a heat ray reflective film are laminated in this order on the outer surface of the glass substrate when in use, while an electromagnetic shielding layer is laminated on the inner surface of the glass substrate when in use. This is achieved by an electromagnetic shielding window glass characterized in that a transparent conductive thin film for use with visible light and an anti-reflection film for visible light are laminated in this order.
本発明の電磁遮蔽ウインドガラスは、上記した
如く、ガラス基板の外側に電磁遮蔽用透明導電性
薄膜と熱線反射膜を積層し、内側に電磁遮蔽用透
明導電性薄膜と可視光線の反射防止膜を設けたこ
とが特徴である。 As described above, the electromagnetic shielding window glass of the present invention has a transparent conductive thin film for electromagnetic shielding and a heat ray reflective film laminated on the outside of the glass substrate, and a transparent conductive thin film for electromagnetic shielding and a visible light antireflection film on the inside. It is characterized by the fact that
本発明において、ガラス基板としては通常用い
られている強化ガラス、部分強化ガラス、合わせ
ガラス等を用いることができる。 In the present invention, commonly used tempered glass, partially tempered glass, laminated glass, etc. can be used as the glass substrate.
透明導電性薄膜の材料としては、例えば、ITO
（酸化インジウム（In2O3）と二酸化錫（SnO2）
の固溶体）を用いることができる。この透明導電
性薄膜の膜厚は、本発明の電磁遮蔽ウインドガラ
スが透明であることが必要なため、可視光の波長
域の電磁波は通過するように、100Å〜数μの範
囲とする。なお、透明導電性薄膜の膜厚は熱線反
射膜の構成には直接影響を及ぼさないため、上記
範囲内において適宜決めることができる。従つ
て、電磁遮蔽効果の向上と透明導電性薄膜による
赤外線吸収効果の向上を目的として、膜厚を大き
くすることも可能である。 Examples of materials for transparent conductive thin films include ITO.
(Indium oxide (In 2 O 3 ) and tin dioxide (SnO 2 )
solid solution) can be used. Since the electromagnetic shielding window glass of the present invention needs to be transparent, the thickness of this transparent conductive thin film is set in the range of 100 Å to several microns so that electromagnetic waves in the wavelength range of visible light can pass through. Note that the thickness of the transparent conductive thin film does not directly affect the structure of the heat ray reflective film, so it can be appropriately determined within the above range. Therefore, it is possible to increase the film thickness for the purpose of improving the electromagnetic shielding effect and the infrared absorption effect of the transparent conductive thin film.
なお、透明導電性薄膜を、熱線反射膜または可
視光線の反射防止膜を構成する光学薄膜の一つと
して利用することもできる。 Note that the transparent conductive thin film can also be used as one of the optical thin films constituting a heat ray reflective film or a visible light antireflection film.
また、電磁遮蔽用透明導電性薄膜の表面抵抗
（シート抵抗）は数百Ω／□以下であることが望
ましい。 Further, it is desirable that the surface resistance (sheet resistance) of the transparent conductive thin film for electromagnetic shielding be several hundred Ω/□ or less.
この透明導電性薄膜の接地は、ウインドガラス
に接触する導電性接着材、スペーサ、ダム、クリ
ツプ等の支持部材により直接接地してもよく、ま
たは容量結合により高周波接地をしてもよい。 The transparent conductive thin film may be grounded directly by a support member such as a conductive adhesive, a spacer, a dam, or a clip that comes into contact with the window glass, or may be grounded by high frequency through capacitive coupling.
本発明において、熱線反射膜としては、従来公
知の光学薄膜を用いる。光学薄膜とは、ガラス等
の基板表面上に、この基板表面における反射防
止、反射増加等を目的として形成された薄膜であ
り、光の干渉効果を利用するものである。光学薄
膜は１層のみで形成されることもあるが、高屈折
率物質と低屈折率物質とを交互に積層したいわゆ
る多層膜として形成されることもある。高屈折率
物質としては、酸化ジルコニウム（ZrO2）、酸化
チタン（TiO2）等が用いられ、低屈折率物質と
しては、二酸化珪素（SiO2）、フツ化マグネシウ
ム（MgF2）等が用いられる。 In the present invention, a conventionally known optical thin film is used as the heat ray reflective film. An optical thin film is a thin film formed on the surface of a substrate such as glass for the purpose of preventing reflection, increasing reflection, etc. on the substrate surface, and utilizes the interference effect of light. An optical thin film may be formed of only one layer, but it may also be formed as a so-called multilayer film in which high refractive index materials and low refractive index materials are alternately laminated. Zirconium oxide (ZrO 2 ), titanium oxide (TiO 2 ), etc. are used as high refractive index substances, and silicon dioxide (SiO 2 ), magnesium fluoride (MgF 2 ), etc. are used as low refractive index substances. .
光学薄膜を多層膜として形成した場合には、反
射防止効果、反射増加効果を一層高めることがで
きる。また、反射防止、反射増加を生じさせる光
の波長域を広げたり、薄膜を形成する物質の屈折
率との関係において、この物質の選択の自由度を
増すことができる。 When the optical thin film is formed as a multilayer film, the antireflection effect and the reflection increasing effect can be further enhanced. Furthermore, it is possible to widen the wavelength range of light that causes reflection prevention or increased reflection, and to increase the degree of freedom in selecting the material forming the thin film in relation to its refractive index.
本発明においては、熱線反射膜として、例えば
TiO2膜とSiO2膜を積層させた多層膜を用いるこ
とができる。このとき、熱線反射膜における各光
学薄膜の膜厚は、光学的膜厚でλ／４（λ：反射
しようとする赤外線の波長）である。但し、熱線
反射膜の最上層の膜厚はλ／８とする。 In the present invention, as the heat ray reflective film, for example,
A multilayer film in which a TiO 2 film and a SiO 2 film are laminated can be used. At this time, the film thickness of each optical thin film in the heat ray reflective film is λ/4 (λ: wavelength of infrared rays to be reflected) in optical film thickness. However, the thickness of the top layer of the heat ray reflective film is λ/8.
本発明において、可視光線の反射防止膜として
は、例えば、弗化セリウム（CeF3）、酸化ジルコ
ニウム（ZrO2）、弗化マグネシウム（MgO2）の
各光学薄膜を用いることができる。また、二酸化
珪素（SiO2）の光学薄膜の単層でもよいし、透
明導電性薄膜と二酸化珪素の光学薄膜を積層して
もよい。これらの光学薄膜は、ガラス基板の内表
面から車内側に向かつて前記順に積層されてい
る。これらの光学薄膜の膜厚は、0.05μ〜0.3μが
望ましい。 In the present invention, optical thin films of cerium fluoride (CeF 3 ), zirconium oxide (ZrO 2 ), and magnesium fluoride (MgO 2 ) can be used as the visible light antireflection film, for example. Moreover, a single layer of an optical thin film of silicon dioxide (SiO 2 ) may be used, or a transparent conductive thin film and an optical thin film of silicon dioxide may be laminated. These optical thin films are laminated in the above order from the inner surface of the glass substrate toward the inside of the vehicle. The thickness of these optical thin films is preferably 0.05μ to 0.3μ.
上記透明導電性薄膜と熱線反射膜と可視光線の
反射防止膜は、ガラス基板上等に、真空蒸着法、
スパツタリング、イオンプレーテイング等の適宜
な表面処理技術によつて形成される。 The above-mentioned transparent conductive thin film, heat ray reflective film and visible light anti-reflection film are deposited on a glass substrate etc. by vacuum evaporation method.
It is formed by an appropriate surface treatment technique such as sputtering or ion plating.
〔発明の作用〕
外界から入射した赤外線は、熱線反射膜で位相
干渉を起こし、車室内に侵入するのが抑制され、
大部分（50％程度）が反射して外界へ戻る。残り
の赤外線が電磁遮蔽用透明導電性薄膜を通過する
途中で吸収（入射赤外線の20〜30％程度）され、
合計70〜80％の赤外線が車室内に侵入するのが抑
止される。[Operation of the invention] Infrared rays incident from the outside world cause phase interference in the heat ray reflective film, and are prevented from entering the vehicle interior.
The majority (about 50%) is reflected back to the outside world. The remaining infrared rays are absorbed (approximately 20 to 30% of the incident infrared rays) while passing through the transparent conductive thin film for electromagnetic shielding.
A total of 70-80% of infrared rays are prevented from entering the vehicle interior.
一方、外界から入射した電波は、透明導電性薄
膜により電磁遮蔽され、透明導電性薄膜に誘起し
た高周波電流は、接地部を介してボデーに流れ、
車室内への電波の侵入を抑止する。 On the other hand, radio waves incident from the outside world are electromagnetically shielded by the transparent conductive thin film, and the high frequency current induced in the transparent conductive thin film flows to the body via the grounding part.
Prevents radio waves from entering the vehicle interior.
また、可視光線の反射防止膜により、可視光線
の反射が大幅に抑制され、ガラス映りが低減され
る。 Furthermore, the anti-reflection film for visible light greatly suppresses reflection of visible light, reducing reflections on the glass.
本発明は、上記の如く構成されているため、以
下のような効果を奏する。
Since the present invention is configured as described above, it has the following effects.
(イ) 本発明の電磁遮蔽ウインドガラスは、熱線反
射膜だけのときに比べ、透明導電性薄膜が熱線
吸収作用をするため、全体として熱線遮蔽率が
20〜30％向上する。(b) The electromagnetic shielding window glass of the present invention has a higher heat ray shielding rate as a whole because the transparent conductive thin film acts to absorb heat rays compared to when only a heat ray reflective film is used.
Improve by 20-30%.
(ロ) 本発明によれば、１つのガラスで、外来電波
の侵入と赤外線の侵入とガラス映りを同時に抑
止することができ、コストパフオーマンス上も
非常に有効で、実用的である。(b) According to the present invention, it is possible to simultaneously prevent the intrusion of foreign radio waves, infrared rays, and reflections on the glass with one glass, and it is very effective and practical in terms of cost performance.
(ハ) 透明導電性薄膜をガラス基板の両面に設けた
ため、電磁遮蔽効果が大きい。(c) Since transparent conductive thin films are provided on both sides of the glass substrate, the electromagnetic shielding effect is large.
(ニ) 熱線反射膜と可視光線の反射防止膜は、とも
に透明導電性薄膜の保護膜となるため、耐久性
に優れている。(d) The heat ray reflective film and the visible light antireflection film both serve as protective films for the transparent conductive thin film, and therefore have excellent durability.
(ホ) 電子機器の耐EMI性に対するコストの低減
化が図れ、エアコンの冷房性能が向上する。(e) The cost of EMI resistance of electronic devices can be reduced, and the cooling performance of air conditioners can be improved.
(ヘ) ウインドガラスの使用目的上の多機能化が図
れ、商品力が向上する。(F) Wind glass can be used for multiple purposes, improving product appeal.
(ト) 同一面で同時にスパツタリングが可能なた
め、生産上の省力化が図れる。(g) Since sputtering can be performed simultaneously on the same surface, labor savings in production can be achieved.
(チ) 電磁遮蔽用透明導電性薄膜の膜厚は任意に設
定でき、目的と必要に応じて、最適な膜厚を選
択することができる。(H) The thickness of the transparent conductive thin film for electromagnetic shielding can be set arbitrarily, and the optimal thickness can be selected depending on the purpose and necessity.
次に、本発明の望ましい実施例を図面を参考に
して説明する。
Next, preferred embodiments of the present invention will be described with reference to the drawings.
（第１実施例）
第１図は本発明の電磁遮蔽ウインドガラスを適
用した自動車を示す斜視図、第２図は第１図の
−断面図、第３図は第２図の−部分拡大図
である。(First Example) Fig. 1 is a perspective view showing an automobile to which the electromagnetic shielding window glass of the present invention is applied, Fig. 2 is a cross-sectional view of Fig. 1, and Fig. 3 is a partial enlarged view of Fig. 2. It is.
第１図において、ハツチングが施されている部
分に本発明の電磁遮蔽ウインドガラスが装着され
ている。 In FIG. 1, the electromagnetic shielding window glass of the present invention is attached to the hatched area.
第２図において、１はガラス基板であり、この
ガラス基板１の外側面上に透明導電性薄膜として
のITO膜２が設けられ、更にITO膜２上に熱線反
射膜３が設けられている。一方、ガラス基板１の
内側面上にはITO膜２と可視光線の反射防止膜４
が設けられている。このガラス基板１とITO膜２
と熱線反射膜３と可視光線の反射防止膜４により
本発明の電磁遮蔽ウインドガラス５が形成され
る。電磁遮蔽ウインドガラス５は、窓枠６とモー
ル７の間に導電性接着剤８によつて固定される。
なお、９は導電性接着剤８のはみ出しを防止する
ダムであり、１０は電磁遮蔽ウインドガラス５と
窓枠６の隙間を埋め、かつ電磁遮蔽ウインドガラ
ス５の下方へのずれを防ぐスペーサである。上記
ITO膜２は、導電性接着剤８によりボデー（窓枠
５）に接地されている。 In FIG. 2, reference numeral 1 denotes a glass substrate, and an ITO film 2 as a transparent conductive thin film is provided on the outer surface of this glass substrate 1, and a heat ray reflecting film 3 is further provided on the ITO film 2. On the other hand, an ITO film 2 and an anti-reflection film 4 for visible light are provided on the inner surface of the glass substrate 1.
is provided. This glass substrate 1 and ITO film 2
The electromagnetic shielding window glass 5 of the present invention is formed by the heat ray reflective film 3 and the visible light antireflection film 4. The electromagnetic shielding window glass 5 is fixed between the window frame 6 and the molding 7 with a conductive adhesive 8.
Note that 9 is a dam that prevents the conductive adhesive 8 from protruding, and 10 is a spacer that fills the gap between the electromagnetic shielding window glass 5 and the window frame 6 and prevents the electromagnetic shielding window glass 5 from shifting downward. . the above
The ITO film 2 is grounded to the body (window frame 5) with a conductive adhesive 8.
第３図にその部分拡大図が示されているよう
に、熱線反射膜３は６層の光学薄膜からなる。こ
の光学薄膜としては、高屈折率物質である酸化チ
タン（TiO2）３ａと低屈折率物質である二酸化
珪素（SiO2）３ｂが用いられており、交互に積
層されている。 As shown in a partially enlarged view in FIG. 3, the heat ray reflecting film 3 is composed of six layers of optical thin films. As this optical thin film, titanium oxide (TiO 2 ) 3a, which is a high refractive index material, and silicon dioxide (SiO 2 ) 3b, which is a low refractive index material, are used and are alternately layered.
酸化チタンの光学薄膜３ａおよび二酸化珪素の
光学薄膜３ｂの光学薄膜nd（ｎは屈折率、ｄは膜
厚）は、それぞれ反射すべき赤外線の波長の1/4
である。また、最上層を形成する二酸化珪素の光
学薄膜３ｂの光学薄膜ndは、前記赤外線の波長
の1/8である。 The optical thin film nd (n is the refractive index, d is the film thickness) of the optical thin film 3a of titanium oxide and the optical thin film 3b of silicon dioxide is 1/4 of the wavelength of the infrared rays to be reflected, respectively.
It is. Further, the optical thin film nd of the silicon dioxide optical thin film 3b forming the uppermost layer is 1/8 of the wavelength of the infrared rays.
例えば、反射すべき赤外線の波長を1050nｍ程
度に設定すると、この波長に対応する酸化チタン
の屈折率は約2.3であり、二酸化珪素の屈折率は
約1.45であるため、この場合酸化チタンの光学薄
膜３ａの膜厚は1140Å程度、二酸化珪素の光学薄
膜３ｂの膜厚は1810Å程度となり、最上層の二酸
化珪素の光学薄膜３ｂのみ900Å程度となる。 For example, if the wavelength of infrared rays to be reflected is set to about 1050 nm, the refractive index of titanium oxide corresponding to this wavelength is about 2.3, and the refractive index of silicon dioxide is about 1.45, so in this case, the optical thin film of titanium oxide The thickness of the optical thin film 3a made of silicon dioxide is about 1140 Å, the thickness of the optical thin film 3b of silicon dioxide is about 1810 Å, and only the thickness of the optical thin film 3b of silicon dioxide, which is the uppermost layer, is about 900 Å.
ITO膜２の膜厚は任意に設定できるが、本実施
例においては、外側のITO膜２ａは、反射防止膜
４を構成する光学薄膜の一つとしたため、膜厚は
λ／８の約680Åとし、内側のITO膜２ｂは可視
光線の反射防止膜４とは関係なく、膜厚を5000Å
とした。 The thickness of the ITO film 2 can be set arbitrarily, but in this example, the outer ITO film 2a was one of the optical thin films constituting the antireflection film 4, so the film thickness was set to approximately 680 Å, which is λ/8. , the inner ITO film 2b has a film thickness of 5000 Å, regardless of the visible light anti-reflection film 4.
And so.
また、可視光線の反射防止膜４として、二酸化
珪素の光学薄膜４ａを設けた。このとき、反射を
防止すべき可視光線の波長を520nｍに設定し、
二酸化珪素の光学薄膜４ａの膜厚を約900Åとし
た。 Furthermore, as an antireflection film 4 for visible light, an optical thin film 4a of silicon dioxide was provided. At this time, the wavelength of visible light to be prevented from reflection is set to 520 nm,
The thickness of the silicon dioxide optical thin film 4a was approximately 900 Å.
このITO膜２と熱線反射膜３と可視光線の反射
防止膜４とはそれぞれRFマグネトロンスパツタ
リング法によつて、ガラス基板１上およびITO膜
２上に形成した。そして、スパツタ後、350℃に
90分間保つ熱処理を施した。 The ITO film 2, the heat ray reflective film 3, and the visible light antireflection film 4 were formed on the glass substrate 1 and the ITO film 2, respectively, by RF magnetron sputtering. Then, after sputtering, it is heated to 350℃.
Heat treatment was performed for 90 minutes.
この結果得られた電磁遮蔽ウインドガラスは、
熱線反射膜による赤外線反射率が50％であり、
ITO膜による赤外線吸収率が25％であるため、合
わせて赤外線の75％が遮断された。従つて、車室
内の涼しさが確保でき、エアコンの負荷の低減が
図れた。 The resulting electromagnetic shielding window glass is
The infrared reflectance due to the heat ray reflective film is 50%,
Since the infrared absorption rate of the ITO film is 25%, a total of 75% of infrared rays were blocked. Therefore, it was possible to keep the cabin cool and reduce the load on the air conditioner.
また、本実施例の電磁遮蔽ウインドガラスは、
ITO膜を設けていない従来のものに比べ、10〜
20dB電磁遮蔽効果が向上した。 In addition, the electromagnetic shielding window glass of this example is
10~ compared to the conventional one that does not have an ITO film.
Improved electromagnetic shielding effect by 20dB.
更に、可視光線の反射防止膜を付けない従来の
ウインドガラスでは、可視光線の反射率は、内外
とも4.5％であつたが、本実施例の電磁遮蔽ウイ
ンドガラスでは、外側が1.0％、内側が2.5％であ
り、大幅に反射防止が図れた。従つて、ガラス映
りが低減した。 Furthermore, in conventional window glass without an anti-reflection film for visible light, the reflectance for visible light was 4.5% both inside and outside, but in the electromagnetic shielding window glass of this example, the reflectance for visible light was 1.0% on the outside and 1.0% on the inside. 2.5%, significantly preventing reflection. Therefore, the reflection on the glass was reduced.
（第２実施例）
第４図は第２実施例を示す電磁遮蔽ウインドガ
ラスの概略構成図である。(Second Embodiment) FIG. 4 is a schematic diagram of an electromagnetic shielding window glass showing a second embodiment.
第２実施例の第１実施例との違いは、ITO膜の
膜厚が第１実施例の場合と逆になつている点であ
り、他は第１実施例と実質的に同じである。 The difference between the second embodiment and the first embodiment is that the thickness of the ITO film is reversed from that of the first embodiment, and other aspects are substantially the same as the first embodiment.
第２実施例の電磁遮蔽ウインドガラスは、赤外
線遮断効果と電磁遮蔽効果は第１実施例と同じで
あり、可視光線の反射率が内外で逆になる。従つ
て、室内照明等のガラス映りは、第２実施例の方
がより低減している。 The electromagnetic shielding window glass of the second embodiment has the same infrared shielding effect and electromagnetic shielding effect as the first embodiment, but the reflectance of visible light is reversed inside and outside. Therefore, the reflection of indoor lighting on the glass is more reduced in the second embodiment.
以上、本発明の特定の実施例について説明した
が、本発明は、この実施例に限定されるものでは
なく、特許請求の範囲に記載の範囲内で種々の実
施態様が包含されるものであり、例えば、可視光
線の反射防止膜として、弗化マグネシウム、酸化
アルミニウム（Al2O3）の単層膜または弗化セリ
ウム、酸化ジルコニウム、弗化マグネシウムの３
層膜を用いることができる。 Although specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and includes various embodiments within the scope of the claims. For example, as an antireflection film for visible light, a single layer film of magnesium fluoride and aluminum oxide (Al 2 O 3 ) or a trilayer film of cerium fluoride, zirconium oxide, and magnesium fluoride may be used.
A layer film can be used.
なお、電磁遮蔽効果は、電子機器が自動車の前
方に集中しているため、自動車のウインドシール
ドガラスに設けるだけで、かなりの効果をあげる
ことができる。 In addition, since electronic devices are concentrated in the front of a car, the electromagnetic shielding effect can be quite effective simply by providing it on the windshield glass of the car.
第１図は本発明の電磁遮蔽ウインドガラスを適
用した自動車を示す斜視図、第２図は第１図の
−断面図、第３図は第２図の−部分拡大
図、第４図は本発明の第２実施例に係る電磁遮蔽
ウインドガラスの概略構成図である。
１……ガラス基板、２……透明導電性薄膜
（ITO膜）、２ａ……外側の透明導電性薄膜、２ｂ
……内側の透明導電性薄膜、３……熱線反射膜、
３ａ……酸化チタン膜（光学薄膜）、３ｂ……二
酸化珪素膜（光学薄膜）、４……可視光線の反射
防止膜、４ａ……二酸化珪素膜（光学薄膜）、５
……電磁遮蔽ウインドガラス、６……窓枠、７…
…モール、８……導電性接着剤、９……ダム、１
０……スペーサ。
Fig. 1 is a perspective view showing an automobile to which the electromagnetic shielding window glass of the present invention is applied, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is a partial enlarged view of Fig. 2, and Fig. 4 is a main FIG. 3 is a schematic configuration diagram of an electromagnetic shielding window glass according to a second embodiment of the invention. 1...Glass substrate, 2...Transparent conductive thin film (ITO film), 2a...Outer transparent conductive thin film, 2b
... Inner transparent conductive thin film, 3 ... Heat ray reflective film,
3a...Titanium oxide film (optical thin film), 3b...Silicon dioxide film (optical thin film), 4...Visible light antireflection film, 4a...Silicon dioxide film (optical thin film), 5
...Electromagnetic shielding window glass, 6...Window frame, 7...
...Mall, 8...Conductive adhesive, 9...Dam, 1
0...Spacer.
Claims (1)
遮蔽用透明導電性薄膜と熱線反射膜がこの順に積
層され、一方ガラス基板の使用時における内側面
に、電磁遮蔽用透明導電性薄膜と可視光線の反射
防止膜がこの順に積層されていることを特徴とす
る電磁遮蔽ウインドガラス。 ２ 特許請求の範囲第１項において、前記電磁遮
蔽用透明導電性薄膜はその材料がITO（酸化イン
ジウム（In2O3）と二酸化錫（SnO2）の固溶体）
であることを特徴とする電磁遮蔽ウインドガラ
ス。 ３ 特許請求の範囲第１項において、前記熱線反
射膜は、酸化チタンと二酸化珪素の光学薄膜の積
層体であることを特徴とする電磁遮蔽ウインドガ
ラス。 ４ 特許請求の範囲第１項において、前記可視光
線の反射防止膜は、二酸化珪素膜からなることを
特徴とする電磁遮蔽ウインドガラス。[Claims] 1. A transparent conductive thin film for electromagnetic shielding and a heat ray reflective film are laminated in this order on the outer surface of the glass substrate when in use, while a transparent conductive thin film for electromagnetic shielding is laminated on the inner surface of the glass substrate when in use. An electromagnetic shielding window glass characterized by having a transparent thin film and a visible light antireflection film laminated in this order. 2. In claim 1, the electromagnetic shielding transparent conductive thin film is made of ITO (a solid solution of indium oxide (In 2 O 3 ) and tin dioxide (SnO 2 )).
An electromagnetic shielding window glass characterized by: 3. The electromagnetic shielding window glass according to claim 1, wherein the heat ray reflective film is a laminate of optical thin films of titanium oxide and silicon dioxide. 4. The electromagnetic shielding window glass according to claim 1, wherein the visible light antireflection film is made of a silicon dioxide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18812383A JPS6081047A (en) | 1983-10-06 | 1983-10-06 | Window glass for electromagnetic shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18812383A JPS6081047A (en) | 1983-10-06 | 1983-10-06 | Window glass for electromagnetic shielding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6081047A JPS6081047A (en) | 1985-05-09 |
| JPH046662B2 true JPH046662B2 (en) | 1992-02-06 |
Family
ID=16218112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18812383A Granted JPS6081047A (en) | 1983-10-06 | 1983-10-06 | Window glass for electromagnetic shielding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6081047A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136316B (en) * | 1983-03-17 | 1986-05-29 | Glaverbel | Coated glazing materials |
| GB8624826D0 (en) * | 1986-10-16 | 1986-11-19 | Glaverbel | Light transmitting glazing pane |
| JP2855199B2 (en) * | 1987-09-03 | 1999-02-10 | 本田技研工業株式会社 | Automotive window glass |
| JP2948593B2 (en) * | 1988-08-22 | 1999-09-13 | 日東電工株式会社 | Transparent conductive film |
| US5707685A (en) * | 1991-03-19 | 1998-01-13 | Hitachi, Ltd. | Process for forming ultrafine particle film, transparent plate and image display plate |
| US5073451A (en) * | 1989-07-31 | 1991-12-17 | Central Glass Company, Limited | Heat insulating glass with dielectric multilayer coating |
| FR2793889B1 (en) * | 1999-05-20 | 2002-06-28 | Saint Gobain Vitrage | TRANSPARENT SUBSTRATE WITH ANTI-REFLECTIVE COATING |
| CA2981124A1 (en) * | 2015-05-15 | 2016-11-24 | Saint-Gobain Glass France | Pane with thermal-radiation-reflecting coating and fastening or sealing element attached thereto |
-
1983
- 1983-10-06 JP JP18812383A patent/JPS6081047A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6081047A (en) | 1985-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4507547A (en) | Heat wave shielding lamination | |
| US6746775B1 (en) | Glazing with optical and/or energetic properties capable of being electrically controlled | |
| JP2817978B2 (en) | Sunlight control layered coatings for glass windows | |
| KR101455201B1 (en) | Multiple glazing unit having increased selectivity and use of a substrate for producing such a galzing unit | |
| US20250282122A1 (en) | Laminated glass and vehicle | |
| EP0080182B1 (en) | Infrared shielding lamination | |
| US4583815A (en) | Heat wave shielding lamination | |
| US3597050A (en) | Transparent article having modified radiation-transmitting properties | |
| JP7604671B2 (en) | Heatable composite panes for projection assemblies | |
| RU192308U1 (en) | VEHICLE ROOF | |
| US20040124665A1 (en) | Thermally comfortable glass | |
| JP2008534429A (en) | Multi-layer glazing with improved selectivity | |
| JP2002348151A (en) | Heat ray reflecting laminated windsheld glass | |
| JPH08283044A (en) | Heat blocking glass | |
| JP2610880B2 (en) | Transparent substrate | |
| CN108515752B (en) | A sunroof assembly glass without sunshade | |
| JPH046662B2 (en) | ||
| JP2008024538A (en) | Laminated glass for windows | |
| KR20260036353A (en) | Laminated glass, display systems, and vehicles | |
| JPS6027623A (en) | Window glass shielding electromagnetic radiation | |
| JP3359697B2 (en) | Automotive windows and automobiles | |
| CN118938484B (en) | Black edge display glass, black edge display system and vehicle | |
| JPH0433749B2 (en) | ||
| JPH07138048A (en) | UV heat ray blocking glass | |
| JPS5826622A (en) | Window glass for automobiles attached with heat ray reflecting film |