CN205015541U - Electromagnetic shield window - Google Patents
Electromagnetic shield window Download PDFInfo
- Publication number
- CN205015541U CN205015541U CN201020128723.7U CN201020128723U CN205015541U CN 205015541 U CN205015541 U CN 205015541U CN 201020128723 U CN201020128723 U CN 201020128723U CN 205015541 U CN205015541 U CN 205015541U
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- Prior art keywords
- silverskin
- function
- substrate
- electromagnetic shielding
- shielding window
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Abstract
The utility model provides an electromagnetic shield window, including function substrate and the first silverskin of load on the function base plate, still include the second silverskin and the nickel membrane of load on the second silverskin of load edge around first silverskin surface, the epimembranal earth connection that is connected with of nickel. According to the utility model discloses an electromagnetic shield window, main function structure (playing the electromagnetic effect of shielding) is first silverskin, and thin silver layer resistance is lower, has good electromagnetic interference resistance function. Its luminousness is also higher in addition, simple structure, and the cost of manufacture is lower.
Description
Technical field
The utility model relates to a kind of electromagnetic shielding window.
Background technology
Electromagnetic screen is one of three large technology of electromagnetism interference, and it utilizes shield to stop or reduces a kind of measure of transmission of electromagnetic energy.Shielding is isolated between two area of space, exactly to control electric field, magnetic field and electromagnetic wave by a region to the induction in another region and radiation.Specifically, be surrounded with the interference source of shield by component, circuit, subassembly, cable or whole system exactly, prevent interfere with electromagnetic field to external diffusion; With shield, receiving circuit, equipment or system are surrounded, prevent them to be subject to the impact of external electromagnetic field.Because shield absorbs energy (eddy current loss), reflected energy (boundary reflection of electromagnetic wave on shield) and counteracting energy to all playing from the outside interference electromagnetic wave such as wire, cable, component, circuit or system and internal electrical magnetic wave (electromagnetic induction produces reverse electromagnetic field on the shielding layer, can offset part disturb electromagnetic wave) effect, so shield has the function weakening interference.
For the form with electro-magnetic screen function, the main method shield adopted at present is on form substrate surface, plate the very thin ito thin film of one deck, and ito thin film has very high transmittance, but resistance value is larger, and resistance value is larger, and shield effectiveness is poorer.If but increasing the thickness of ito film, resistance value has diminished, but transmittance will reduce, and affects the result of use of form, and the price making ITO in addition also costly, requires very high to device therefor.
A kind of shield is also had to be utilize metal material to obtain in addition.Such as, CN200810060905 discloses a kind of glass with electro-magnetic screen function, and it is on white glass substrate, once deposit the first zinc sulfide film layer, argent thin layer, the second zinc sulfide film layer.But the resistance of zinc sulphide is also larger, the electric conductivity of electromagnetic shielding membrane can be affected, reduce shield effectiveness.
Utility model content
The utility model is the technical matters that shield effectiveness such as anti-electromagnetic interference (EMI) film resistance larger grade is not good, cost is higher solved on prior art form, provides a kind of effectiveness good and the electromagnetic shielding window that cost of manufacture is lower.
The technical solution adopted in the utility model is as follows:
A kind of electromagnetic shielding window, comprises function base material and first silverskin of load on function substrate, also comprises second silverskin of load in the edge on the first silverskin surface and the nickel film of load on the second silverskin, described nickel film is connected with ground wire.
Further:
Described electromagnetic shielding window also comprises the structural substrate be connected with function base material and nickel film by bonding coat, described structural substrate cover part nickel film.
The integral light-transmitting rate of described electromagnetic shielding window function substrate, the first silverskin, bonding coat, structural substrate is 60%-75%.
The thickness of described bonding coat is 0.05-0.2 millimeter, and the thickness of described structural substrate is 0.3-4 millimeter.
The transmittance of described first silverskin is 60%-80%, and thickness is 40-70 nanometer.
The thickness of described second silverskin is 300-400 nanometer, and the thickness of described function substrate is 0.3-4 millimeter.
The width of described second silver film is 5-8 millimeter.
According to electromagnetic shielding window of the present utility model, principal functional structure (playing the effect of shielding electromagnetism) is the first silverskin, and thinner silver layer resistance is lower, has excellent anti electromagnet interference function.Its transmittance is also higher in addition, and structure is simple, and cost of manufacture is lower.
Accompanying drawing explanation
Fig. 1 is the electromagnetic shielding window structural representation that the utility model embodiment provides.
Embodiment
The technical matters solved to make the utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, according to the electromagnetic shielding window that the present embodiment provides, it comprises function base material 1 and first silverskin 2 of load on function substrate, namely covers the face that on function base material, observer can not see.Also comprise second silverskin 3 of load in the edge on the first silverskin surface and the nickel film 4 of load on the second silverskin, described nickel film is connected with ground wire 5, described electromagnetic shielding window also comprises the structural substrate 7 be connected with function base material and nickel film by bonding coat 6, described structural substrate cover part nickel film.The large circle of such function sheet material surface area ratio structure plate, makes the edge exposure of nickel film, by outer drain edge ground connection, can play the effect of electromagnetic screen.
Preferably, be also coated with above-mentioned first silverskin in the side of substrate, then the edge on above-mentioned first silverskin surface comprises the silverskin of silverskin on function substrate side and edge on the surface, covers the second silverskin thereon.For the back side of function substrate, on the described back side the first silverskin edge on the area of the second silverskin that covers determine according to design, in general, the width of described second silver film is 5-8 millimeter, and the annular that is on this first silverskin face width direction, on two ends 5-8 millimeter, length direction, two ends 5-8 millimeter surrounds is coated with the second silverskin.Described second silverskin round function substrate light-permeable part be namely effective use part of form.
In the present embodiment, first silverskin is the shielded metal layer that shielding force is strong, it plays a major role in effectiveness, second silverskin is then the electric conductivity in order to improve whole rete further, nickel film is except electric conductivity, more have the effect of protection metal screen layer concurrently, multilayer complex films is had anti-oxidant, the function such as anticorrosive, especially have and function is resisted to brine corrosion, thus the effectiveness of multilayer complex films is not influenced because being placed in aggressive atmosphere on protection base material, form substrate is then to protect above-mentioned rete, have certain supporting role in addition concurrently.
There is no particular limitation to the thickness of each structural sheet for the utility model, can be the thickness of conventional anti-electromagnetic interference (EMI) metal film, also can decide in its sole discretion according to the requirement of electromagnetic interference shield rate.Such as, for the electromagnetic shielding window being applied to military notebook field, the thickness of described function substrate is 0.3-4 millimeter, the thickness of the first silverskin is 40-70 nanometer, the thickness of the second silverskin is 300-400 nanometer, and the thickness of nickel film is 300-400 nanometer, and the thickness of bonding coat is 0.05-0.2 millimeter, the thickness of structural substrate is 0.3-4 millimeter, effectiveness can be made to meet requirement that military notebook prevents electromagnetic exposure.
There is no particular limitation to function substrate for the utility model, can be the various plastics that electromagnetic screen field is commonly used, such as, and polycarbonate (PC), polymethylmethacrylate (PMMA), PMMA+PC compound substance.Good in order to make function substrate and the first silverskin combine, preferably surface treatment is carried out to function substrate.First, use industrial white spirit by the fully wiping of the back side (i.e. non-viewing face) of function substrate, carry out surface degreasing and preliminary surface activation, with surface without any greasy dirt, impurity.Then, use anhydrous industrial alcohol by the back side wiping of function substrate, carry out further surface active.After the alcohol on function substrate surface fully volatilizees, use GPY-4I high-frequency spark Electrical Discharge Machine, carry out the back side trace electric discharge to function substrate.Spark machine sparking voltage 250-300V, electric current 2.0A, velocity of discharge 900rpm.Improve surface cleanliness by strict surface treatment, can effectively improve its surface adhesion force.
Be evenly distributed to make the first silverskin and be combined well with function base material, preferably adopting direct magnetic control (directcurrentmagnetron) sputtering method to obtain above-mentioned first silverskin.Described direct current magnetron sputtering process has been conventionally known to one of skill in the art, and such as, the method comprises and being sputtered in the atmosphere comprising inert gas by function substrate.Described inert gas is preferably argon gas.The sputtering power of described direct current magnetron sputtering process can be 2500-4000 watt, and stove heart rotating speed is 35 ~ 47S/C, and the plated film time is 34 ~ 46S.Can adhere to the first very thin silverskin be made up of the Argent grain that electric conductivity is good like this on function substrate, can not produce Morie fringe, and light transmission is good, the transmittance of the first silverskin of individual layer is 60%-80%, can meet its demand for form.
Obtained second silverskin of said method and nickel film can be adopted, when making the second silverskin, will the first silverskin not need the partial occlusion of covering second silverskin live, the power of the filming equipment selected be 7 ~ 9Kw, stove heart rotating speed is 35 ~ 47S/C, and the plated film time is 160 ~ 230S.The power making the filming equipment that nickel film is selected reaches 7 ~ 9Kw, and stove heart rotating speed is 35 ~ 47S/C, and the plated film time is 160 ~ 230S.So just form the thicker opaque diaphragm of one deck in the edge of the first silverskin, have electric conductivity and corrosion resistivity simultaneously concurrently.
After obtained above-mentioned metal film, arrange bonding coat at its back side, described bonding coat adopts light transmissive material, as transparent double-side glue.
Then structural substrate is combined with function substrate by bonding coat.Described structural substrate and function substrate align center, structural substrate is more smaller than function substrate area, while playing a protective role, part of nickel film can be made to expose in order to ground connection.In general, function substrate large 4-5 millimeter more each than the two ends of structural substrate in length and Width.
In order to meet the needs as form, described function substrate, bonding coat, structural substrate all have very high transmittance, even reach more than 99%, in general, function substrate described in the utility model embodiment, the first silverskin, bonding coat, structural substrate superimposed after integral light-transmitting rate be 60%-75%.
According to electromagnetic shielding window of the present utility model, effectiveness is better than traditional stainless (steel) wire shield effectiveness, diagonal angle resistance less than 2 ohm, there is excellent anti electromagnet interference function, electromagnetic screen rate is up to 25-40 debye (db), thinner silver layer also can not produce moire fringes, minimizing kopiopia.Its transmittance is high in addition, and structure is simple, and cost of manufacture is lower.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. an electromagnetic shielding window, it is characterized in that, comprise function base material and first silverskin of load on function substrate, also comprise second silverskin of load in the edge on the first silverskin surface and the nickel film of load on the second silverskin, described nickel film is connected with ground wire.
2. electromagnetic shielding window as claimed in claim 1, it is characterized in that, described electromagnetic shielding window also comprises the structural substrate be connected with function base material and nickel film by bonding coat, described structural substrate cover part nickel film.
3. electromagnetic shielding window as claimed in claim 2, it is characterized in that, the integral light-transmitting rate of described electromagnetic shielding window function substrate, the first silverskin, bonding coat, structural substrate is 60%-75%.
4. electromagnetic shielding window as claimed in claim 2, it is characterized in that, the thickness of described bonding coat is 0.05-0.2 millimeter, and the thickness of described structural substrate is 0.3-4 millimeter.
5. electromagnetic shielding window as claimed in claim 1 or 2, it is characterized in that, the transmittance of described first silverskin is 60%-80%, and thickness is 40-70 nanometer.
6. electromagnetic shielding window as claimed in claim 1 or 2, it is characterized in that, the thickness of described second silverskin is 300-400 nanometer, and the thickness of described function substrate is 0.3-4 millimeter.
7. electromagnetic shielding window as claimed in claim 1 or 2, it is characterized in that, the width of described second silver film is 5-8 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020128723.7U CN205015541U (en) | 2010-03-10 | 2010-03-10 | Electromagnetic shield window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020128723.7U CN205015541U (en) | 2010-03-10 | 2010-03-10 | Electromagnetic shield window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205015541U true CN205015541U (en) | 2016-02-03 |
Family
ID=55214136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020128723.7U Expired - Lifetime CN205015541U (en) | 2010-03-10 | 2010-03-10 | Electromagnetic shield window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205015541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040419A (en) * | 2017-12-08 | 2018-05-15 | 深圳市鑫方上科技有限公司 | A kind of surface increases the electronic product casing preparation method of material combination 3D-SMT |
-
2010
- 2010-03-10 CN CN201020128723.7U patent/CN205015541U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040419A (en) * | 2017-12-08 | 2018-05-15 | 深圳市鑫方上科技有限公司 | A kind of surface increases the electronic product casing preparation method of material combination 3D-SMT |
| CN108040419B (en) * | 2017-12-08 | 2021-03-02 | 南京麦德材料有限公司 | Preparation method of electronic product shell with surface additive combined with 3D-SMT |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20160203 |