CN104658650A - Flat cable - Google Patents
Flat cable Download PDFInfo
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- CN104658650A CN104658650A CN201510036014.3A CN201510036014A CN104658650A CN 104658650 A CN104658650 A CN 104658650A CN 201510036014 A CN201510036014 A CN 201510036014A CN 104658650 A CN104658650 A CN 104658650A
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- flat cable
- layer
- cable according
- following layer
- dielectric film
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Abstract
The invention relates to a flat cable which comprises a pair of insulating films, a plurality of conductors, a dielectric layer, at least one bonding layer and a coating layer, wherein the conductors are clamped between the insulating films and arranged left and right at intervals, and the dielectric layer, the bonding layer and the coating layer sequentially cover the outer side of one insulating film; the dielectric layer is made of PET, PE, PP or CPP; the surface of the bonding layer is bonded with a permeability magnetic material, and the bonding layer can provide a good EMI effect. The high-frequency performance of the flat cable is improved.
Description
Technical field
The present invention relates to a kind of flat cable, particularly relate to a kind of flat cable with high frequency performance.
Background technology
Flexible flat cable (Flexible Flat Cable, be called for short FFC) be a kind of PET insulating material and the very thin flat copper wire new types of data cable by the pressing of high-tech automation equipment production line, there is softness, random bending fold, thickness is thin, volume is little, connection is simple, convenient disassembly, easily solve the advantages such as electromagnetic shielding (EMI).In current flat cable industry, aluminium foil layer or copper foil layer are normally set to reach EMI effect (anti-electromagnetic interference effect), but, when having direct current or low frequency magnetic field interference in system, EMI effect is also not obvious, have impact on the high frequency performance of flat cable.
So, be necessary that a kind of new flat cable of design is to solve the problems of the technologies described above.
Summary of the invention
The object of the present invention is to provide and a kind of there is the flat cable improving EMI effect.
For realizing aforementioned object, the present invention adopts following technical scheme: a kind of flat cable, it comprises a pair dielectric film, be clamped in this between dielectric film and the spaced some conductors in left and right and the dielectric layer, at least one following layer and the serving that sequentially cover outside a wherein dielectric film, described dielectric layer is made up of PET, PE, PP or CPP material, and described following layer surface is bonded with permeability magnetic material.
The following layer surface of flat cable of the present invention is bonded with permeability magnetic material, following layer is made to have low magnetic resistance, macroscopically to the by-passing that magnetic-field component plays, effectively can weaken the magnetic field of flat cable inside, even if when having direct current or low frequency magnetic field interference in system, following layer also can provide good EMI effect, improves the high frequency performance of flat cable.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of first embodiment of the invention flat cable.
Fig. 2 is the schematic diagram of second embodiment of the invention flat cable.
Fig. 3 is the schematic diagram of third embodiment of the invention flat cable.
Fig. 4 is the schematic diagram of four embodiment of the invention flat cable.
Embodiment
Refer to shown in Fig. 1, first embodiment of the invention flat cable 10 comprises a pair dielectric film 11, be clamped in this between dielectric film 11 and the spaced some straps 12 in left and right and adhesive layer 13, dielectric layer 14, two following layer 15, serving 16 that sequentially covers outside a wherein dielectric film 11.
Adhesive layer 13 and following layer 15 are double faced adhesive tape or PUR, and dielectric layer 13 is made up of PET, PE, PP or CPP material, and in order to adjust the dielectric coefficient of flat cable 10, dielectric coefficient is less, and signal transmission rate is faster.
The surface of two following layers 15 is bonded with permeability magnetic material, as ferrite or rare earth permanent-magnet powder, following layer 15 is made to have low magnetic resistance, macroscopically to the by-passing that magnetic-field component plays, effectively can weaken the magnetic field of flat cable 10 inside, even if when having direct current or low frequency magnetic field interference in system, following layer 15 can provide good EMI effect, improves the high frequency performance of flat cable 10.
Refer to shown in Fig. 2, second embodiment of the invention flat cable 20 is on above-mentioned flat cable 10 basis, covers adhesive layer 13, dielectric layer 14, two following layer 15, serving 16 outside another dielectric film 11 again.Specifically, conductor 12 both sides are coated with adhesive layer 13, dielectric layer 14, two following layer 15, serving 16 respectively, the structure of conductor 12 both sides is symmetrical, this flat cable 20 utilizes the permeability magnetic material on following layer 15 surface, good EMI effect can be provided equally, improve the high frequency performance of flat cable 10, reach object of the present invention.
Refer to shown in Fig. 3 and Fig. 4, the main distinction of third embodiment of the invention flat cable 30 and the first execution mode flat cable 10 is, wherein following layer 35 surface coverage one metal level 351, replace permeability magnetic material, another following layer 35 is positioned at the outside of this metal level 351, and metal level 351 is aluminium foil or Copper Foil.Four embodiment of the invention flat cable 40 is on the 3rd execution mode flat cable 30 basis, arrange an adhesive layer 13, dielectric layer 14, following layer 35, metal level 351, another following layer 35, one serving 16 in the outside of two dielectric films 11, the structure of conductor 12 both sides is symmetrical simultaneously.Three, the flat cable 30,40 of the 4th execution mode can utilize the permeability magnetic material on following layer 35 surface equally, provides good EMI effect, improves the high frequency performance of flat cable 30,40, reaches object of the present invention.
Although be example object, disclose the preferred embodiment of the present invention, but those of ordinary skill in the art will recognize, when not departing from scope and spirit of the present invention disclosed in appending claims, various improvement, increase and replacement are possible.
Claims (10)
1. a flat cable, it comprises a pair dielectric film, be clamped in this between dielectric film and the spaced some conductors in left and right and the dielectric layer, at least one following layer and the serving that sequentially cover outside a wherein dielectric film, described dielectric layer is made up of PET, PE, PP or CPP material, it is characterized in that: described following layer surface is bonded with permeability magnetic material.
2. flat cable according to claim 1, is characterized in that: described permeability magnetic material is ferrite or rare earth permanent-magnet powder.
3. flat cable according to claim 1, is characterized in that: described following layer is adjacent two-layer, and the surface of each following layer is bonded with permeability magnetic material respectively.
4. flat cable according to claim 1, is characterized in that: the structure of described conductor both sides is symmetrical, and the outside of another dielectric film is also sequentially coated with a dielectric layer, at least one following layer and a serving.
5. flat cable according to claim 1, is characterized in that: described following layer is adjacent two-layer, and wherein the surface of a following layer is bonded with permeability magnetic material, and another following layer surface coverage has a metal level.
6. flat cable according to claim 5, is characterized in that: described metal level is positioned at the inner side of permeability magnetic material.
7. flat cable according to claim 5, is characterized in that: the structure of described conductor both sides is symmetrical, is also sequentially coated with a dielectric layer, two following layers and a serving outside another dielectric film.
8. flat cable according to claim 5, is characterized in that: described metal level is aluminium foil or Copper Foil.
9. the flat cable according to any one in claim 1-8, is characterized in that: described following layer is double faced adhesive tape or PUR.
10. flat cable according to claim 9, is characterized in that: be provided with one deck tack coat between described dielectric film and dielectric layer, and described tack coat is double faced adhesive tape or PUR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036014.3A CN104658650A (en) | 2015-01-23 | 2015-01-23 | Flat cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036014.3A CN104658650A (en) | 2015-01-23 | 2015-01-23 | Flat cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104658650A true CN104658650A (en) | 2015-05-27 |
Family
ID=53249668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510036014.3A Pending CN104658650A (en) | 2015-01-23 | 2015-01-23 | Flat cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104658650A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161179A (en) * | 2015-08-17 | 2015-12-16 | 深圳闻信电子有限公司 | High-frequency signal FFC adhesive film and technological process for processing adhesive film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866715A (en) * | 2009-04-14 | 2010-10-20 | 英帕可有限公司 | The flexible flat cable that is used for the reduction EMI of LVDS |
| CN102026529A (en) * | 2009-09-18 | 2011-04-20 | 大自达电线株式会社 | Shielding film, shielding distribution board having the same and grounding method thereof |
| KR20110107021A (en) * | 2010-03-24 | 2011-09-30 | 나노인텍 주식회사 | Conductive film for flexible flat cable |
| CN203787138U (en) * | 2014-04-14 | 2014-08-20 | 亳州联滔电子有限公司 | Flat cable |
| CN204423948U (en) * | 2015-01-23 | 2015-06-24 | 亳州联滔电子有限公司 | Flat cable |
-
2015
- 2015-01-23 CN CN201510036014.3A patent/CN104658650A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866715A (en) * | 2009-04-14 | 2010-10-20 | 英帕可有限公司 | The flexible flat cable that is used for the reduction EMI of LVDS |
| CN102026529A (en) * | 2009-09-18 | 2011-04-20 | 大自达电线株式会社 | Shielding film, shielding distribution board having the same and grounding method thereof |
| KR20110107021A (en) * | 2010-03-24 | 2011-09-30 | 나노인텍 주식회사 | Conductive film for flexible flat cable |
| CN203787138U (en) * | 2014-04-14 | 2014-08-20 | 亳州联滔电子有限公司 | Flat cable |
| CN204423948U (en) * | 2015-01-23 | 2015-06-24 | 亳州联滔电子有限公司 | Flat cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161179A (en) * | 2015-08-17 | 2015-12-16 | 深圳闻信电子有限公司 | High-frequency signal FFC adhesive film and technological process for processing adhesive film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |