CN215730924U - Flexible flat cable - Google Patents
Flexible flat cable Download PDFInfo
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- CN215730924U CN215730924U CN202121290347.6U CN202121290347U CN215730924U CN 215730924 U CN215730924 U CN 215730924U CN 202121290347 U CN202121290347 U CN 202121290347U CN 215730924 U CN215730924 U CN 215730924U
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- flat cable
- flexible flat
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Abstract
The application discloses flexible flat cable includes: a conductor, an adhesive layer and an insulating layer. The adhesive layer comprises a plurality of microparticles and colloid, the microparticles are doped in the colloid, the colloid wraps the periphery of the conductor, and the dielectric constant of the microparticles is smaller than that of the colloid. The insulating layer is coated on the periphery of the colloid. The utility model provides an adhesive layer effectively reduces dielectric constant and dielectric loss through a plurality of microgranules, can reduce the influence of adhesive layer to the conductor so. Furthermore, the fluororesin has flame retardancy, heat resistance and corrosion resistance, and the addition and use of a flame retardant can be reduced.
Description
Technical Field
The application relates to the technical field of high-frequency signals, in particular to a flexible flat cable.
Background
In the prior art, a power line for signal transmission is mostly composed of two layers of polyester insulating materials and a central conductor wire, and two ends of the power line are connected and assembled according to a plug structure required by a user. At present, taking a card-type flexible flat cable (i.e. FFC) as an example, a hot-melt adhesive film is one of three main raw materials constituting the card-type flexible flat cable, the hot-melt adhesive film can provide flame-retardant, heat-resistant and insulating effects, and meanwhile, the hot-melt adhesive film needs to be filled with a large amount of flame retardant, which causes the dielectric constant of the hot-melt adhesive film to increase and the dielectric loss to cause the problem of attenuation of high-speed transmission signals.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a flexible flat cable, it can be through be provided with a plurality of microparticles that fluororesin made in inside to reduce the use of fire retardant, and effectively solve present hot melt adhesive membrane and cause the problem that the dielectric constant increases and increase dielectric loss.
In order to solve the technical problem, the present application is implemented as follows:
the application provides a flexible flat cable, includes: a conductor, an adhesive layer and an insulating layer. The adhesive layer comprises a plurality of microparticles and colloid, the microparticles are doped in the colloid, the colloid wraps the periphery of the conductor, and the dielectric constant of the microparticles is smaller than that of the colloid; and the insulating layer is coated on the periphery of the colloid.
In this embodiment, the dielectric constant of the colloid is between 2.3 and 2.9, and the dielectric constant of the plurality of microparticles is between 1.8 and 2.4.
In one embodiment, the adhesive layer has a composition ratio of 10: 90 to 90: 10, wherein the adhesive layer has a preferred composition ratio of 20: 80 to 50: 50 of said colloid and said plurality of microparticles.
In one embodiment, the adhesive further comprises a substrate film layer disposed between the adhesive layer and the insulating layer.
In one embodiment, each of the microparticles is 0.1um to 50um in size, wherein each of the microparticles preferably has a particle size of 0.5um to 30 um.
In one embodiment, the conductors are multiple, and the multiple conductors are in a shape of a round strip or/and a flat strip.
In one embodiment, the conductors are a plurality of conductors, and the plurality of conductors are one or a combination of copper-plated wires, silver-plated wires and gold-plated wires.
In one embodiment, the insulating layer further comprises two reinforcing plates, the two reinforcing plates are respectively arranged at two ends of the insulating layer, and the two reinforcing plates are respectively positioned at the same side of the insulating layer.
In one embodiment, the insulating layer further comprises two reinforcing plates, the two reinforcing plates are respectively arranged at two ends of the insulating layer, and the two reinforcing plates are respectively positioned at the opposite sides of the insulating layer.
In one embodiment, the cable further comprises two reinforcing plates, the two reinforcing plates are respectively arranged at two ends of the conductor, and the two reinforcing plates are located on the same side of the conductor.
In one embodiment, the cable further comprises two reinforcing plates, the two reinforcing plates are respectively arranged at two ends of the conductor, and the two reinforcing plates are positioned at opposite sides of the conductor.
In one embodiment, the connector further comprises a reinforcing plate, and the reinforcing plate is arranged at one end of the conductor or one end of the insulating layer.
This application flexible flat cable, its a plurality of microparticles that make through fluororesin mix and make the viscose layer in the colloid, and the viscose layer can effectively reduce dielectric constant and dielectric loss, so can reduce the influence of viscose layer to the conductor, and again, fluororesin has fire resistance, heat resistance and corrosion resistance, and the addition of reducible fire retardant is used.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a cross-sectional view of a flexible flat cable of the present application;
fig. 2 is a cross-sectional view of a flexible flat cable of a first embodiment of the present application;
fig. 3 is a cross-sectional view of a flexible flat cable of a second embodiment of the present application;
fig. 4 is a sectional view of a flexible flat cable of a third embodiment of the present application;
fig. 5 is a sectional view of a flexible flat cable of a fourth embodiment of the present application;
fig. 6 is a sectional view of a flexible flat cable of a fifth embodiment of the present application; and
fig. 7 is a sectional view of a flexible flat cable according to a sixth embodiment of the present application.
Detailed Description
Embodiments of the present application are illustrated in the drawings and, for purposes of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details should not be used to limit the application. That is, in some embodiments of the present application, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings. In the following embodiments, the same or similar components will be denoted by the same reference numerals.
Fig. 1 is a cross-sectional view of a flexible flat cable with a hot melt adhesive film according to the present application. As shown, the present application provides a flexible flat cable comprising: a conductor 11, an adhesive layer 13 and an insulating layer 15. The adhesive layer 13 includes a plurality of microparticles 131 and a colloid 133, the microparticles 131 are doped in the colloid 133, and the colloid 133 covers the periphery of the conductor 11, wherein the dielectric constant of the microparticles 131 is less than the dielectric constant of the colloid 133. The insulating layer 15 covers the periphery of the colloid 133. Furthermore, the conductors 11 in the present embodiment have a plurality of shapes, such as but not limited to round bars or/and flat bars, and the wires of the plurality of conductors may be but not limited to one or a combination of copper-plated wires, silver-plated wires, and gold-plated wires.
As described above, the plurality of fine particles 131 are made of fluororesin, and the surfaces of the plurality of fine particles 131 made of fluororesin are subjected to surface treatment by fluorine-containing coupling agent treatment, molten potassium acetate modification, or sodium naphthalene solution modification. The dielectric constant of the plurality of microparticles 131 is less than that of the colloid 133, wherein the dielectric constant of the plurality of microparticles 131 made of the fluororesin is between 1.8 and 2.4, and the dielectric constant of the colloid 133 is between 2.3 and 2.9. In the present embodiment, the adhesive layer 13 is formed by doping a plurality of microparticles 131 made of fluorine resin into the colloid 133, and the adhesive layer 13 has a composition ratio of 10: 90 to 90: 10, the adhesive layer 13 has a preferred composition ratio of 20: 80 to 50: 50 colloid 133 and a plurality of microparticles 131. The colloid 133 is doped with a plurality of micro-particles 131 made of fluorine resin, so that the overall dielectric constant and dielectric loss of the adhesive layer 13 can be effectively reduced.
In the present embodiment, the particle size or shape of the plurality of micro-particles 131 made of fluororesin may be adjusted according to the user's requirement, the particle size of the plurality of micro-particles 131 made of fluororesin may be the same, different or not identical, and the above-mentioned usage mode may be selected according to the particle size required by the user. Wherein, the particle size of the plurality of micro-particles 131 made of the fluororesin is 0.1um to 50um, and the particle size of the plurality of micro-particles 131 made of the fluororesin is preferably 0.5um to 30 um. It should be further noted that, in the present embodiment, the sizes of the plurality of micro-particles 131 made of the fluorine resin are the same, different or not completely the same, and if the sizes of the plurality of micro-particles 131 made of the fluorine resin are different, the sizes of the plurality of micro-particles 131 in the adhesive layer 13 are completely different; if the plurality of micro particles 131 made of the fluorine resin are the same, the plurality of micro particles 131 in the adhesive layer 13 have the same size; if the plurality of micro-particles 131 made of the fluorine resin are not completely the same, the sizes of the micro-particles 131 in one portion of the adhesive layer 13 are completely the same, and the sizes of the micro-particles 131 in the other portions are different, so that the plurality of micro-particles 131 are arranged in the same, different or not completely the same size, thereby improving the overall flame retardancy, heat resistance and corrosion resistance of the flexible flat cable.
The shape of the plurality of fine particles 131 made of the fluororesin may be, but not limited to, a spherical shape, a conical shape, a rectangular shape, a rod shape, or a polygonal three-dimensional shape. Due to the different shapes of the plurality of micro-particles 131 of the fluorine resin particles, the contact surfaces of the plurality of micro-particles 131 of the fluorine resin particles and the adhesive layer 13 are different, thereby indirectly forming different bonding strengths between the adhesive layer 13 and the insulating layer 15 and between the adhesive layer 13 and the conductor 11.
The fluororesin material of the plurality of fine particles 131 related to the present embodiment is a tetrafluoroethylene resin, a tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin, a tetrafluoroethylene-hexafluoropropylene copolymer resin, a tetrafluoroethylene-ethylene copolymer resin, a vinylidene fluoride resin, a chlorotrifluoroethylene resin, or an ethylene-chlorotrifluoroethylene resin. Further, the plurality of fine particles 131 are tetrafluoroethylene resin, tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin, tetrafluoroethylene-hexafluoropropylene copolymer resin, tetrafluoroethylene-ethylene copolymer resin, vinylidene fluoride resin, chlorotrifluoroethylene resin, or ethylene-chlorotrifluoroethylene resin. The colloid 133 is one or a mixture of two or more of a modified ethylene-vinyl acetate copolymer, a modified thermoplastic polyurethane, a modified hydrogenated styrene-butadiene-styrene block copolymer, a styrene-isoprene-styrene copolymer, a styrene-butadiene-styrene block copolymer, a modified polyolefin elastomer, a maleic anhydride-modified polybutadiene resin, an amine-modified polybutadiene resin, a carboxyl-terminated modified polybutadiene resin, a hydroxyl-terminated modified polybutadiene resin, a maleic anhydride-modified butadiene-styrene copolymer, an acrylate-modified butadiene-styrene copolymer, a polyester, an epoxy resin, and a polyphenylene oxide.
In the present embodiment, the adhesive layer 13 is doped with one or a combination of two or more of crystalline silica, amorphous silica, spherical silica, titanium dioxide, strontium titanate, barium titanate, boron nitride, aluminum nitride, silicon carbide, alumina, glass fiber, polytetrafluoroethylene, polyphenylene sulfide, and polyether sulfone. The adhesive layer 13 is further doped with one or a combination of a thermoplastic resin, a tackifier, a flame retardant, a curing agent, a curing accelerator, a coupling agent, an anti-thermal aging agent, a leveling agent, a defoaming agent, an inorganic filler, a pigment and a solvent.
As described above, since the plurality of fine particles 131 of the fluororesin particles doped in the adhesive layer 13 have flame retardancy, heat resistance and corrosion resistance, the amount of the flame retardant added can be reduced to less than or equal to 10% of the total amount of the adhesive layer 13. The flame retardant doped in the adhesive layer 13 is a bromine-containing flame retardant or a phosphorus-containing flame retardant, wherein the bromine-containing flame retardant comprises decabromodiphenyl ether, decabromodiphenyl ethane or ethylene bistetrabromophthalimide, and the phosphorus-containing flame retardant comprises tris (2, 6-dimethylphenyl) phosphine, 10- (2, 5-dihydroxyphenyl) -9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 2, 6-bis (2, 6-dimethylphenyl) phosphinobenzene or 10-phenyl-9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide. The flame retardant is an organic flame retardant and an inorganic flame retardant, wherein the organic flame retardant comprises antimony trioxide, melamine phosphate, melamine polyphosphate, guanidine phosphate, guanidine polyphosphate, ammonium phosphate, ammonium polyphosphate, ammonium phosphate amide, ammonium polyphosphate amide, carbamate phosphate, carbamate polyphosphate, aluminum tridiethylphosphinate, aluminum trimethylethylphosphinate, aluminum tridiphenylphosphinate, zinc bisdiethylphosphinate, zinc bismethylethylphosphinate, zinc bisdiphenylphosphinate, titanyl bisdiethylphosphinate, titanium tetradiethylphosphinate, titanyl bismethylethylphosphinate, titanium tetramethylethylphosphinate, titanyl bisdiphenylphosphinate, titanium tetradiphenylphosphinate, and a phosphorus-based flame retardant of titanium tetradiphenylphosphinate; and triazine compounds such as melamine, melam, and melamine cyanurate, cyanuric acid compounds, isocyanuric acid compounds, triazole compounds, tetrazole compounds, diazo compounds, and urea, and inorganic flame retardants include metal hydroxides such as aluminum hydroxide, magnesium hydroxide, zirconium hydroxide, barium hydroxide, and calcium hydroxide; metal oxides of tin oxide, aluminum oxide, magnesium oxide, zirconium oxide, zinc oxide, molybdenum oxide, nickel oxide; one or more of zinc carbonate, magnesium carbonate, barium carbonate, zinc borate and hydrated glass. In addition, the fluororesin is a non-combustible resin, has a function similar to a flame retardant, can also reduce the proportion of the flame retardant filled in the mixed resin, and is an effective anti-dripping agent, which can contribute to the improvement of the flame retardant performance and the anti-dripping performance of the mixed resin.
In the present embodiment, the adhesive layer further includes a substrate film layer 17, and the substrate film layer 17 is disposed between the adhesive layer 13 and the insulating layer 15. Wherein the base material film layer 17 is a polyimide film, a polyether ether ketone film, a polyphenylene sulfide film, an aromatic polyamide film, a polyethylene naphthalate film, a liquid crystal polymer film or a polyethylene terephthalate film. In this embodiment, the adhesive of the adhesive layer 13 is coated with the base film layer 17 as the insulating layer 15.
Fig. 2 is a cross-sectional view of a flexible flat cable according to a first embodiment of the present application. As shown in the drawings, in the present embodiment, the flexible flat cable 1 further includes a reinforcing plate 19, and the reinforcing plate 19 is disposed at one end of the insulating layer 15. Wherein, one end of the flexible flat cable 1 is a plug end, the reinforcing plate 19 is arranged at the plug end, and the reinforcing plate 19 is used for reinforcing the structural strength of the plug end of the flexible flat cable 1. The other end of the flexible flat cable 1 is a soldering end, and the other end can be directly soldered on a circuit board.
Fig. 3 is a cross-sectional view of a flexible flat cable according to a second embodiment of the present application. As shown in the drawing, the difference of the present embodiment from the first embodiment lies in the structure in which the reinforcing plates 19 are connected. In the present embodiment, the flexible flat cable 1 further includes a reinforcing plate 19, and the reinforcing plate 19 is disposed at one end of the conductor 11. Wherein, one end of the flexible flat cable 1 is a plug end, the reinforcing plate 19 is arranged on the conductor 11 of the plug end, and the reinforcing plate 19 is used for reinforcing the structural strength of the conductor 11 of the flexible flat cable 1. The other end of the flexible flat cable 1 is a soldering end, and the other end can be directly soldered on a circuit board.
Fig. 4 is a cross-sectional view of a flexible flat cable according to a third embodiment of the present application. As shown in the drawing, the difference of the present embodiment compared to the first embodiment is the number of reinforcing plates 19. In this embodiment, the flexible flat cable 1 further includes two reinforcing plates 19, the two reinforcing plates 19 are respectively disposed at two ends of the insulating layer 15 of the flexible flat cable 1, and the two reinforcing plates 19 are respectively located at the same side of the insulating layer 15, i.e. the plugging surface of the plugging end is located at the same side. Wherein, both ends of the flexible flat cable 1 are plug ends, and the reinforcing plate 19 is used for reinforcing the structural strength of the plug ends at both ends of the flexible flat cable 1.
Fig. 5 is a cross-sectional view of a flexible flat cable according to a fourth embodiment of the present application. As shown in the drawing, the present embodiment is different from the third embodiment in the position where the reinforcing plate 19 is provided. In this embodiment, the flexible flat cable 1 further includes two reinforcing plates 19, the two reinforcing plates 19 are respectively disposed at two ends of the insulating layer 15, the two reinforcing plates 19 are respectively located at opposite sides of the insulating layer 15, i.e. the plugging surface of the plugging end is located at the opposite side. Wherein, both ends of the flexible flat cable 1 are plug ends, and the reinforcing plate 19 is used for reinforcing the structural strength of the plug ends at both ends of the flexible flat cable 1.
Fig. 6 is a cross-sectional view of a flexible flat cable according to a fifth embodiment of the present application. As shown in the drawing, the difference of the present embodiment from the third embodiment lies in the structure in which the reinforcing plates 19 are connected. In this embodiment, the flexible flat cable 1 further includes two reinforcing plates 19, the two reinforcing plates 19 are respectively disposed at two ends of the conductor 11, and the two reinforcing plates 19 are located at the same side of the conductor 11. The reinforcing plate 19 serves to reinforce the structural strength of the conductor 11 of the flexible flat cable 1.
Fig. 7 is a cross-sectional view of a flexible flat cable according to a fifth embodiment of the present application. As shown in the drawing, the difference of the present embodiment from the fourth embodiment lies in the structure in which the reinforcing plates 19 are connected. In the present embodiment, the flexible flat cable 1 further includes two reinforcing plates 19, the two reinforcing plates 19 are respectively disposed at two ends of the conductor 11, and the two reinforcing plates 19 are located at opposite sides of the conductor 11. The reinforcing plate 19 serves to reinforce the structural strength of the conductor 11 of the flexible flat cable 1.
To sum up, this application provides a flexible flat cable with glued membrane for high frequency signal, and a plurality of microparticles that fluororesin was made are compared in the dielectric constant of colloid low, and a plurality of microparticles that the viscose layer was made through fluororesin effectively reduce dielectric constant and dielectric loss, so can reduce the influence of viscose layer to the conductor. Furthermore, the fluororesin has flame retardancy, heat resistance and corrosion resistance, and the addition and use of a flame retardant can be reduced.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the foregoing specification illustrates and describes several preferred embodiments of this application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed herein, either by the above teachings or by the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (11)
1. A flexible flat cable, comprising:
a conductor;
the adhesive layer comprises a plurality of microparticles made of fluororesin and a colloid, the microparticles are arranged in the colloid, the colloid is coated on the periphery of the conductor, and the dielectric constant of the microparticles is smaller than that of the colloid; and
and the insulating layer is coated on the periphery of the colloid.
2. The flexible flat cable according to claim 1, wherein the colloid has a dielectric constant between 2.3 and 2.9, and the plurality of microparticles has a dielectric constant between 1.8 and 2.4.
3. The flexible flat cable according to claim 1, further comprising a substrate film layer disposed between the adhesive layer and the insulating layer.
4. The flexible flat cable of claim 1, wherein each of said microparticles has a size of 0.1um to 50um, wherein each of said microparticles preferably has a particle size of 0.5um to 30 um.
5. The flexible flat cable according to claim 1, wherein the conductor is a plurality of conductors, and the plurality of conductors are in the shape of a round bar or a flat bar.
6. The flexible flat cable according to claim 1, wherein the conductor is a plurality of conductors, and wires of the plurality of conductors are one or a combination of copper-plated wires, silver-plated wires, and gold-plated wires.
7. The flexible flat cable according to claim 1, further comprising two reinforcing plates respectively disposed at both ends of the insulating layer, wherein the two reinforcing plates are respectively located at the same side of the insulating layer.
8. The flexible flat cable according to claim 1, further comprising two reinforcing plates, the two reinforcing plates being respectively disposed at both ends of the insulating layer and being respectively located at opposite sides of the insulating layer.
9. The flexible flat cable according to claim 1, further comprising two reinforcing plates respectively disposed at both ends of the conductor, the two reinforcing plates being located on the same side of the conductor.
10. The flexible flat cable according to claim 1, further comprising two reinforcing plates respectively disposed at both ends of the conductor, the two reinforcing plates being located at opposite sides of the conductor.
11. The flexible flat cable of claim 1, further comprising a reinforcing plate disposed at one end of the conductor or one end of the insulating layer.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121290347.6U CN215730924U (en) | 2021-06-09 | 2021-06-09 | Flexible flat cable |
TW110209607U TWM623201U (en) | 2021-06-09 | 2021-08-13 | Flexible Flat Cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121290347.6U CN215730924U (en) | 2021-06-09 | 2021-06-09 | Flexible flat cable |
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Publication Number | Publication Date |
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CN215730924U true CN215730924U (en) | 2022-02-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202121290347.6U Active CN215730924U (en) | 2021-06-09 | 2021-06-09 | Flexible flat cable |
Country Status (2)
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CN (1) | CN215730924U (en) |
TW (1) | TWM623201U (en) |
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2021
- 2021-06-09 CN CN202121290347.6U patent/CN215730924U/en active Active
- 2021-08-13 TW TW110209607U patent/TWM623201U/en unknown
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