CN203194086U - Thin-type colorful electromagnetic interference shielding film - Google Patents
Thin-type colorful electromagnetic interference shielding film Download PDFInfo
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- CN203194086U CN203194086U CN 201320161544 CN201320161544U CN203194086U CN 203194086 U CN203194086 U CN 203194086U CN 201320161544 CN201320161544 CN 201320161544 CN 201320161544 U CN201320161544 U CN 201320161544U CN 203194086 U CN203194086 U CN 203194086U
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- release film
- film
- printing ink
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a thin-type colorful electromagnetic interference shielding film comprising a conductive adhesive layer, an insulation film layer, and a printing ink protection layer, which are sequentially overlapped with each other. A surface of the conductive adhesive layer is provided with a first release film in an attached manner, and a surface of the printing ink protection layer is provided with a second release film in an attached manner. The conductive adhesive layer is provided with a function of reducing the electromagnetic interference. The total thickness of the conductive adhesive layer, the insulation film layer, and the printing ink protection layer is in a range from 13 micrometers to 93micrometers, therefore the ultrathin appearance can be realized. By adopting the printing ink protection layer, the colorful appearance and the colorful shielding performance can be realized, and the adjustment of the materials and the thickness of various material layers can be provided with the better flexibility and pliability. The thin-type colorful electromagnetic interference shielding film has advantages of good chemical resistant performance, good electric performance, simple production method, low costs, and applicability in ultrathin products requiring bending or sliding of circuit board.
Description
Technical field
The utility model relates to a kind of emi shielding film structure, and is particularly a kind of ultra-thin and can realize the structure of the emi shielding film of colouring.
Background technology
Tend under the multi-functional complicated market demand at electronics and communication product, the structure of circuit substrate dress needs lighter, thin, short, little; And on function, then need powerful and the transmission of high speed signal.Therefore, line density certainly will improve, distance to each other between the support plate circuit is more and more nearer, and operating frequency is broadband towards height, if add configuration, the unreasonable down electromagnetic interference of wiring (Electromagnetic Interference, EMI) situation is more and more serious, therefore must effectively manage electromagnetic compatibility (Electromagnetic Compatibility, EMC), thus keep the normal signal transmission of electronic product and improve reliability.Frivolous and can be arbitrarily crooked characteristic, make soft board occupy critical role in the development of moving towards demand portable information and communication electronic industry.
Because the telecommunications product is more attained little trend, order about soft board and must carry more strong big function, on the other hand because portable electronic product moves towards microminiature, also and then drive the high demand of high density soft board technology, then require on the function under the situation of powerful and high frequencyization, high density, graph thinning, released the screen that is used for film-type flexible printed wiring board (FPC) in the market, in small-sized electronic products such as mobile phone, numerical digit camera, numerical digit video camera, be widely adopted.
In view of this, demand developing a kind of material of shield electromagnetic interference of novelty urgently.
The utility model content
In order to overcome above-mentioned defective, the utility model provides a kind of slimming colouring emi shielding film, slimming colouring emi shielding film of the present utility model not only has advantages such as ultrathin type, color masking and electromagnetic shielding, also have flexibility, advantage such as chemical resistance is good, electrical characteristic is good and pliability is good, again and simple in structure, manufacture method simply reach with low cost.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of slimming colouring emi shielding film comprises successively superimposed conduction gluing layer, insulating film layer and printing ink protective layer, and described conduction gluing layer, insulating film layer and printing ink protective layer three's gross thickness is 13 to 93 microns.
Be preferably, described conduction gluing laminar surface is covered with first release film, described first release film is the PET(polyester) fluorine moulds release film, PET and contains silicone oil release film, the inferior light release film of PET and PE(polyethylene) a kind of in the release film, the thickness of described first release film is 25 to 100 microns.
Be preferably, described printing ink protective layer surface is covered with second release film, and described second release film is moulded release film, PET for the PET fluorine and contained a kind of in silicone oil release film, the inferior light release film of PET and the PE release film, and the thickness of described second release film is 25 to 100 microns.
Be preferably, insulating film layer is polyphenylene sulfide (PPS) film or aromatic series polyamides dead drunk (aramid) film, and the thickness of described insulating film layer is 2 to 25 microns.
Say that further described conduction gluing layer can have the adhesion layer of conducting particles for one deck, and the thickness of described conduction gluing layer is 8 to 60 microns.
Say further, described conduction gluing layer can not have first adhesion layer of conducting particles and second adhesion layer that one deck has conducting particles constitutes by one deck yet, the bonding described insulating film layer of described first adhesion layer and described second adhesion layer (first adhesion layer is in order to increase the adhesion between insulating film layer and second adhesion layer), and the thickness of described conduction gluing layer is 8 to 60 microns.
In above-mentioned adhesion layer with conducting particles, conducting particles flows because resin material is subjected to hot pressing generation deformation, and then form turning circuit with ground connection cabling on the soft board, via making resin reach complete crosslinking curing to keep electrically good and mechanical properties under a period of time, make soft board impedance ground value lower and reach the purpose that reduces Electromagnetic Interference.
Say that further described printing ink protective layer is the resin bed that contains coloured female additive, the thickness of described printing ink protective layer is 3 to 8 microns.
The beneficial effects of the utility model are: slimming colouring emi shielding film of the present utility model is the gluing layer of coating conduction respectively and printing ink protective layer on two surfaces of insulating film layer; and on the surface of conduction gluing layer and printing ink protective layer, paste first release film and second release film respectively; wherein; conduction gluing layer has the effect that reduces electromagnetic interference; and conduction gluing layer; insulating film layer and printing ink protective layer three's gross thickness is 13 to 93 microns and has realized ultra-thinization; the printing ink protective layer has been realized colouring and color masking; make integral body have preferable flexibility and pliability by the material of each material layer and the adjustment of thickness; and it is good to possess chemical resistance; electrical characteristic is good; manufacture method is simple; advantage such as with low cost; be better than traditional polyimides diaphragm (the thin polyimides of thin glue); light sensitive polyimide (or acryl system) diaphragm; non-light sensitive polyimide diaphragm (photoresistance on the need); be applicable to clamshell phone; slide phone; digital camera; digital camera; flat computer; application such as intelligent mobile phone are used for replacing general barrier film material.
Description of drawings
Fig. 1 is slimming colouring emi shielding film structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection range of the present utility model is made more explicit defining.
Embodiment: a kind of slimming colouring emi shielding film; as shown in Figure 1; comprise successively superimposed conduction gluing layer 1, insulating film layer 2 and printing ink protective layer 3, and described conduction gluing layer, insulating film layer and printing ink protective layer three's gross thickness is 13 to 93 microns.
Described conduction gluing layer 1 surface is covered with first release film 4, and described first release film is moulded release film, PET for the PET fluorine and contained a kind of in silicone oil release film, the inferior light release film of PET and the PE release film, and the thickness of described first release film is 25 to 100 microns.
Described printing ink protective layer 3 surfaces are covered with second release film 5, and described second release film is moulded release film, PET for the PET fluorine and contained a kind of in silicone oil release film, the inferior light release film of PET and the PE release film, and the thickness of described second release film is 25 to 100 microns.
Insulating film layer 2 is polyphenylene sulfide (PPS) film or aromatic series polyamides dead drunk (aramid) film, and the thickness of described insulating film layer is 2 to 25 microns.
Described conduction gluing layer 1 can be the adhesion layer that one deck has conducting particles, can not have first adhesion layer of conducting particles and second adhesion layer that one deck has conducting particles constitutes the bonding described insulating film layer of described first adhesion layer and described second adhesion layer by one deck yet.The thickness of described conduction gluing layer is 8 to 60 microns.The material of above-mentioned adhesion layer be all epoxy resin, acrylic resin, amido formate be resin, silicon rubber be resin, poly-be at least a in resin and the polyimide resin to ring diformazan benzene series resin, bismaleimides.Contain conducting particles in the described conduction gluing layer, conducting particles flows because resin material is subjected to hot pressing generation deformation, and then form turning circuit with ground connection cabling on the soft board, via making resin reach complete crosslinking curing to keep electrically good and mechanical properties under a period of time, make soft board impedance ground value lower and reach the purpose that reduces Electromagnetic Interference.
Described printing ink protective layer 3 is for containing the resin bed of coloured female additive; the thickness of described printing ink protective layer is 3 to 8 microns; the resin that described printing ink protective layer adopts be epoxy resin, acrylic resin, amido formate be resin, silicon rubber be resin, poly-be at least a in resin and the polyimide resin to ring diformazan benzene series resin, bismaleimides, described look female additive comprises at least a in material with carbon element, titanium dioxide, pigment, dyestuff and the toner.Described printing ink protective layer can be shades of colours such as black, redness, orange, yellow, blueness.Pigment can comprise that organic material and inorganic material are prepared.
The manufacture method of above-mentioned slimming colouring emi shielding film, undertaken by following step:
Step 1: in the one side coating printing ink protective film of described insulating film layer;
Step 2: get second release film, second release film is covered on the printing ink protective layer, make the reflective degree difference on printing ink protective layer surface by second release film of selecting different surface roughness for use, reach different glossiness;
Step 3: at the another side coating conduction gluing layer of described insulating thin layer;
Step 4: get second release film, second release film is covered on the conduction gluing layer, this second release film is used for keeping the stickiness of described conduction gluing layer, is beneficial to follow-uply be bonding on circuit board or use is made in other pressing.
The utility model slimming colouring emi shielding film has characteristics such as flexibility height, electrical characteristic is good, chemical resistance is good, have more ultra-flexible, have advantages such as manufacture method is simple, with low cost than the employed polyimides coverlay of insulating barrier in the past, and the utility model slimming colouring emi shielding film has better extinction effect, to satisfy client's various different demands.Use the black polyamide thin film that is added with carbon dust traditionally; though the polyimides diaphragm of this manufacture has extinction effect preferably; but cost is too high; do not meet demand during actual volume production, and the anxiety that the polyimides diaphragm that contains additive also has character variation such as tensile strength, dimensional stability is considered.Therefore, the utility model can better application in the printed circuit board (PCB) that circuit is had mask requirement.
The lightness of the utility model slimming colouring emi shielding film and glossiness test are as follows:
Lightness (lightness; claim the L value again) refer to the definition to the bright-dark degree of color according to Commission Internationale De L'Eclairage (International Commission on Illumination); usually; the white lightness is the highest; the black lightness is minimum; and adjust the printing ink protective film near black, lightness is reduction relatively then.Lightness of the present utility model is measured by color difference meter (ColorQuest XEhunterlab).
Glossiness (Gloss) refers to the reflective degree of the printing ink protective layer ink pellet surface of emi shielding film, and glossiness does not have unit, but its numerical value is more big, and it is more strong to represent its catoptrical intensity, otherwise numerical value is more little, and it is more weak to represent its catoptrical intensity.The utility model is measured glossiness with Grossmeters (Novo Gloss TM).
Glossiness of the present utility model (Gloss value)/blackness test, flexibility test, flexibility test are tested as follows with electromagnetic shielding effect:
One, glossiness (Gloss value) test
The use Grossmeters carries out;
Test condition:
Angle: 60 °;
Specimen size: greater than length * wide=10cm * 4cm
Directly reading gets final product.
Two, blackness test
Use the blackness tester to carry out;
Test condition:
Angle: 45 °;
Specimen size: greater than length * wide=4m * 4cm
Directly reading gets final product.
Three, flexibility test
Use the flexibility tester to carry out.
Test condition:
Voltage: AC220V;
Measuring range: 410 grams;
Readable: 0.001 gram;
Test R angle: 2.35 mm;
Testing procedure:
1, adjusts two feets of tester, make air level be positioned at the leveling instrument center;
2, connect instrument power source, with the instrument zero clearing;
3, open glass door, test piece (size 10 mm * 30 a mm) end is fixed on the holder of pallet top, the other end is stuck on the deck at pallet center, makes test piece become one " U " font, shuts glass door after finishing;
4, rotary apparatus right-hand member knob slowly counterclockwise slowly descends deck, contacts with following square washer until it, and the R of test piece at this moment angle is 2.35 mm;
5, lamp to be instructed bright after, both can read contravariant power reading;
6, after test finishes, the knob dextrorotation to original position, is opened glass door, take off test piece;
7, repeat steps 3-6 suddenly, test other test pieces.
Four, flexibility test
Use the slide unit tester to carry out;
Test condition:
Use voltage: AC220V;
Test R angle: 1.0 mm;
Testing procedure:
1, adjusts two feets of tester, test piece is fixed on the tester table;
2, connect instrument power source, with the instrument zero clearing;
Set: test condition:
Spacing H:2.0 mm, place, R angle: 0.8 mm;
Frequency: 30 times/minute;
Shift motion: 32 mm;
3, lamp to be instructed bright after, can record the experimental test data;
4, after test finishes, the knob dextrorotation to original position, is taken off test piece;
5, repeat above-mentioned steps, test other test pieces.
Five, effectiveness test:
Test condition:
Coaxial transmission line testing making apparatus frequency of operation: 30MHz ~ 1.5GHz;
Line analyzer frequency of operation: 40MHz ~ 13.5GHz;
Testing procedure:
1, makes a load sample, a reference sample;
Load sample size: the filled circles of diameter 133mm;
Reference sample size: the round pattern of diameter 33mm and 133(external diameter)/and the 76(internal diameter) the ring-like pattern of mm;
2, connect coaxial transmission line testing making apparatus and line analyzer;
3, reference sample is made in the coaxial transmission line testing making apparatus, the incoming line analyzer is desired measuring range, and the corrector analyzer, makes to insert loss near 0dB;
4, remove reference sample and be placed on load sample, be the value of load sample capture-effect (dB) at screen display.
Experimental group 1-3: at the two sides of insulating film layer difference painting black printing ink protective layer and conduction gluing layer.According to the listed change insulating film layer of table 1 material (PPS, aramid) and thickness, be cut into the flexible printed wiring board specimen test piece of 10 ㎜ * 30 ㎜, diameter 133mm filled circles, carry out glossiness, blackness, flexibility, flexibility and electromagnet shield effect test, repeat three times, calculating mean value, test result is embedded in table 1.
Comparative example 1: the polyimide film that used thickness is 12.5 microns (Teijin Advanced Films Ltd. produces, the PI film of selling with trade name Kapton) is as insulating film layer, again painting black printing ink protective layer and conduction gluing layer.The thickness listed according to table 1, be cut into the flexible printed wiring board specimen test piece of 10 ㎜ * 30 ㎜, diameter 133mm filled circles, carry out glossiness, blackness, flexibility, flexibility and electromagnet shield effect test, repeat three times, calculating mean value, test result is embedded in table 1.
Comparative example 2,3: be coated with printing ink protective layer and conduction gluing layer on the two sides of insulating film layer respectively.According to the listed printing ink of selecting different colours for use of table 1, be cut into the flexible printed wiring board specimen test piece of 10 ㎜ * 30 ㎜, diameter 133mm filled circles, carry out glossiness, blackness, flexibility, flexibility and electromagnet shield effect test, repeat three times, calculating mean value, test result is embedded in table 1.
Table 1
| Project | Experimental group 1 | Experimental group 2 | Experimental group 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Printing ink protective layer color | Black | Black | Black | Black | Red | Green |
| Printing ink protective layer thickness/um | 5 | 5 | 5 | 5 | 5 | 5 |
| Insulating film layer | PPS | aramid | PPS | PI | PPS | PPS |
| Insulating film layer thickness/um | 10 | 10 | 20 | 10 | 10 | 10 |
| Conduction gluing layer thickness/um | 8 | 8 | 8 | 8 | 8 | 8 |
| Gross thickness | 23 | 23 | 33 | 23 | 23 | 23 |
| Gloss | 17.9 | 17.9 | 17.9 | 22.2 | 17.9 | 17.9 |
| Blackness | 29.8 | 29.8 | 29.8 | 31 | 63.7 | 67 |
| Flexibility/gf | 6.5 | 6.6 | 7.3 | 7.1 | 6.5 | 6.5 |
| Flexibility/ten thousand time | 53 | 52 | 45 | 41 | 53 | 53 |
| Screening effectiveness/dB | 53 | 53 | 53 | 53 | 53 | 53 |
Show with the result of comparative example 1 according to experimental group 1, experimental group 2, the utility model uses PPS, aramid as the insulating film layer material, compare with PI, low price not only, production cost is reduced, and have better flexibility and flexibility, so the utility model obviously is better than comparative example; By experimental group 1 and experimental group 3 as can be known, along with insulating film layer thickness reduces, the emi shielding film gross thickness reduces, and its flexibility, flexibility are better, demonstrates fully the advantage of slimming; By experimental group 1 and comparative example 2,3 test results as can be known, the different colours of ink lay, not only for the not influence of performances such as the screening effectiveness of emi shielding film, flexibility, flexibility, and the characteristic of colouring can give people's aesthetic feeling with harmonious, can progressively satisfy the increasing requirement of user, demonstrate fully the advantage of colouring.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Protection range of the present utility model should be listed as claims.
Claims (7)
1. a slimming colouring emi shielding film is characterized in that: comprise successively superimposed conduction gluing layer, insulating film layer and printing ink protective layer, and described conduction gluing layer, insulating film layer and printing ink protective layer three's gross thickness is 13 to 93 microns.
2. slimming colouring emi shielding film according to claim 1, it is characterized in that: described conduction gluing laminar surface is covered with first release film, described first release film is moulded release film, PET for the PET fluorine and is contained a kind of in silicone oil release film, the inferior light release film of PET and the PE release film, and the thickness of described first release film is 25 to 100 microns.
3. slimming colouring emi shielding film according to claim 1; it is characterized in that: described printing ink protective layer surface is covered with second release film; described second release film is moulded release film, PET for the PET fluorine and is contained a kind of in silicone oil release film, the inferior light release film of PET and the PE release film, and the thickness of described second release film is 25 to 100 microns.
4. slimming colouring emi shielding film according to claim 1, it is characterized in that: insulating film layer is polyphenylene sulfide film or the dead drunk film of aromatic series polyamides, and the thickness of described insulating film layer is 2 to 25 microns.
5. slimming colouring emi shielding film according to claim 1 is characterized in that: described conduction gluing layer has the adhesion layer of conducting particles for one deck, and the thickness of described conduction gluing layer is 8 to 60 microns.
6. slimming colouring emi shielding film according to claim 1, it is characterized in that: described conduction gluing layer does not have first adhesion layer of conducting particles by one deck and second adhesion layer that one deck has conducting particles constitutes, the bonding described insulating film layer of described first adhesion layer and described second adhesion layer, and the thickness of described conduction gluing layer is 8 to 60 microns.
7. slimming colouring emi shielding film according to claim 1, it is characterized in that: described printing ink protective layer is the resin bed that contains coloured female additive, the thickness of described printing ink protective layer is 3 to 8 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161544 CN203194086U (en) | 2013-04-02 | 2013-04-02 | Thin-type colorful electromagnetic interference shielding film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320161544 CN203194086U (en) | 2013-04-02 | 2013-04-02 | Thin-type colorful electromagnetic interference shielding film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203194086U true CN203194086U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320161544 Expired - Lifetime CN203194086U (en) | 2013-04-02 | 2013-04-02 | Thin-type colorful electromagnetic interference shielding film |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702513A (en) * | 2014-01-17 | 2014-04-02 | 杨秀英 | Carrier film suitable for single-sided flexible circuit board, as well as preparation method and application thereof |
| CN104105386A (en) * | 2013-04-02 | 2014-10-15 | 昆山雅森电子材料科技有限公司 | Thin-type colorful electromagnetic interference shielding film and manufacturing method thereof |
| CN105101762A (en) * | 2014-05-06 | 2015-11-25 | 昆山雅森电子材料科技有限公司 | Thin high-transmission electromagnetic interference shielding film, and manufacturing method and applications thereof |
| CN105578851A (en) * | 2014-10-15 | 2016-05-11 | 昆山雅森电子材料科技有限公司 | Thin-type high-transmission electromagnetic-absorbing screened film and manufacturing method thereof |
| CN105682441A (en) * | 2016-03-30 | 2016-06-15 | 上海维衡精密电子股份有限公司 | Shielding cover insulation film bonding method and insulation film used by same |
| CN108541204A (en) * | 2017-03-01 | 2018-09-14 | 昆山雅森电子材料科技有限公司 | High shielding slimming emi shielding film of combined type and preparation method thereof |
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2013
- 2013-04-02 CN CN 201320161544 patent/CN203194086U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105386A (en) * | 2013-04-02 | 2014-10-15 | 昆山雅森电子材料科技有限公司 | Thin-type colorful electromagnetic interference shielding film and manufacturing method thereof |
| CN103702513A (en) * | 2014-01-17 | 2014-04-02 | 杨秀英 | Carrier film suitable for single-sided flexible circuit board, as well as preparation method and application thereof |
| CN105101762A (en) * | 2014-05-06 | 2015-11-25 | 昆山雅森电子材料科技有限公司 | Thin high-transmission electromagnetic interference shielding film, and manufacturing method and applications thereof |
| CN105101762B (en) * | 2014-05-06 | 2018-08-07 | 昆山雅森电子材料科技有限公司 | It is thinned high-transmission emi shielding film and its manufacturing method and application |
| CN105578851A (en) * | 2014-10-15 | 2016-05-11 | 昆山雅森电子材料科技有限公司 | Thin-type high-transmission electromagnetic-absorbing screened film and manufacturing method thereof |
| CN105682441A (en) * | 2016-03-30 | 2016-06-15 | 上海维衡精密电子股份有限公司 | Shielding cover insulation film bonding method and insulation film used by same |
| CN108541204A (en) * | 2017-03-01 | 2018-09-14 | 昆山雅森电子材料科技有限公司 | High shielding slimming emi shielding film of combined type and preparation method thereof |
| CN108541204B (en) * | 2017-03-01 | 2020-11-17 | 昆山雅森电子材料科技有限公司 | Composite high-shielding thin electromagnetic interference shielding film and preparation method thereof |
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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: 20130911 |