Flexible flat cable
Technical field
The utility model relates to a kind of flexible flat cable, particularly a kind of flexible flat cable with electromagnetic wave shielding effect and grounding function.
Background technology
Along with advancing by leaps and bounds of electronics technology, various electronic products day by day popularly are applied in the middle of our work and life.In various electronic products, winding displacement is widely applied with the approach as the signal transmission.Yet, winding displacement is when being used to transmission signals, but can supervene high frequency and high-octane electromagnetic wave, the interference that not only can generate electromagnetic waves of these electromagnetic waves to each parts in the electronic product, more likely cause the harm on the health, so various countries all order quite strict regulation for the electromagnetic intensity that electronic product produced.
The Electromagnetic Interference problem that is met with when using winding displacement for solving, prior art are to utilize conductive fabric coating winding displacement, and pull out a lead and make its contact metalwork on every side from conductive fabric, or make directly contact metalwork on every side of conductive fabric.Thus, the electromagnetic wave that conductive fabric is produced with regard to the maskable winding displacement, and with its directly or via lead lead off to around metalwork, the electromagnetic wave outside of avoiding winding displacement by this and being produced is propagated.Yet said method must labor intensive be coated on conductive fabric on the winding displacement, and not only labor intensive is also wasted man-hour.In addition, not only the volume change is big behind the winding displacement coated with conductive cloth, more exists to be difficult for bending and unworkable problem.
The utility model content
The purpose of this utility model is, a kind of flexible flat cable is provided, and it has electromagnetic wave shielding effect and grounding function, and very simple on the structure, can effectively reduce production time and cost, also can not have unpliant problem during use.
For achieving the above object, the utility model provides a kind of flexible flat cable, and it comprises
One first insulation material;
One conductor line layer is arranged in this first insulation material, wherein is provided with at least one earth connection in this conductor line layer, and this earth connection is provided with one first and exposes portion, and this first portion of exposing is made of this first insulation material that removes partly;
One second insulation material is arranged on this first insulation material;
One conductive layer is arranged in this second insulation material, and wherein this conductive layer is provided with one second and exposes portion, and this second portion of exposing is made of this second insulation material that removes partly; And
One aeolotropic conductive is located at this and first is exposed portion and this second and expose between the portion, in order to this earth connection is electrically connected at this conductive layer.
This first insulation material comprises insulating barrier and one first time insulating barrier on one first, this on first insulating barrier and this first time insulating barrier coat this conductor line layer up and down.
This conductor line layer comprises several holding wires.
The two ends of this conductor line layer are provided with several contacts that exposes that is exposed to this first insulation material.
The utility model also provides a kind of flexible flat cable, and it comprises:
One first insulation material;
One conductor line layer is arranged in this first insulation material, wherein is provided with at least one earth connection in this conductor line layer, and this earth connection is provided with one first and exposes portion, and this first portion of exposing is made of this first insulation material that removes partly;
One aeolotropic conductive is located at this and first is exposed in the portion; And
One conductive layer is located on this aeolotropic conductive.
More comprise:
One second insulation material is arranged on this first insulation material.
This second insulation material is between this first insulation material and this conductive layer, and this second insulation material is provided with an opening, and this conductive layer is connected with this aeolotropic conductive via this opening.
This first insulation material comprises insulating barrier and one first time insulating barrier on one first, this on first insulating barrier and this first time insulating barrier coat this conductor line layer up and down.
This conductor line layer comprises several holding wires.
The two ends of this conductor line layer are provided with several contacts that exposes that is exposed to this first insulation material.
The beneficial effects of the utility model: flexible flat cable of the present utility model, utilize the characteristic of or not about conducting up and down of aeolotropic conductive, the earth connection that is exposed to the first insulation material is electrically connected at the conductive layer that is exposed to the second insulation material, because aeolotropic conductive, conductive layer and the second insulation material can directly fit on the first insulation material and the conductor line layer, so not only can labor intensive, but also can automation produce in a large number.In addition, conductive layer and the formed structural group zoarium of the second insulation material are similar to conductor line layer and the formed structural group zoarium of the first insulation material, so the applying conductive layer and the second insulation material do not have too big variation on volume for the conductor line layer and the first insulation material, also be easy to bending, existing conductive fabric coating winding displacement is existing to have the bending of being difficult for and unworkable problem so can solve.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effect apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the schematic perspective view of flexible flat cable of the present utility model;
Fig. 2 is the perspective exploded view of the flexible flat cable among Fig. 1;
Fig. 3 is that flexible flat cable among Fig. 2 is at the schematic diagram of other direction;
Fig. 4 is that flexible flat cable among Fig. 1 is along the generalized section of AA line segment.
Embodiment
For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
See also Fig. 1 to Fig. 4, the utility model provides a kind of flexible flat cable 1, it has the function that reduces the electromagnetic interference (EMI) effect, this kind flexible flat cable 1 comprises one first insulation material 2, a conductor line layer 3, one second insulation material 4, a conductive layer 5 and an aeolotropic conductive 6 (ACF), wherein conductor line layer 3 is arranged in this first insulation material 2, and this first insulation material 2 comprises insulating barrier 22 and one first time insulating barrier 24 on one first.Insulating barrier 22 and first time insulating barrier coating conductor line layer 3 about in the of 24 on first; be not affected by the external environment with protection conductor line layer 3; wherein conductor line layer 3 includes several holding wires 32 and at least one earth connection 34; this earth connection 34 is provided with one first and exposes portion 30; this first exposes portion 30 and is made of the first insulation material 2 that removes partly, and the two ends of conductor line layer 3 be provided with that several are exposed to the first insulation material 3 expose contact 36.
The second insulation material 4 is arranged on this first insulation material 2, one conductive layer 5 is arranged in this second insulation material 4, wherein conductive layer 5 is provided with one second and exposes portion 50, this second exposes portion 50 and is made of the second insulation material 4 that removes partly, that is second insulation material 4 be provided with an opening 40, this opening 40 exposes this and second exposes portion 50.One aeolotropic conductive 6 is located at first and is exposed portion 30 and second and expose between the portion 50, in order to this earth connection 34 is electrically connected at this conductive layer 5.The another kind of selection is, this conductive layer 5 is not to be coated in the second insulation material 4, but conductive layer 5 directly is arranged on the second insulation material 4, this moment second, insulation material 4 was between the first insulation material 2 and conductive layer 5, conductive layer 5 also is to be connected with aeolotropic conductive 6 via the opening 40 on the second insulation material 4, sees through aeolotropic conductive 6 again and is electrically connected at earth connection 34.In the present embodiment, this conductive layer 5 is an aluminium foil, but is not limited thereto, and other electric conducting material can also use.
What deserves to be mentioned is, in the present embodiment, this aeolotropic conductive 6 exposes in the portion 30 except being arranged on first of earth connection 34, also be arranged at simultaneously in the portion of exposing (not indicating) of holding wire 32, but the characteristic of not conducting about because 6 of aeolotropic conductives have conducting up and down, therefore can not produce electrical communication between earth connection 34 and the holding wire 32, cooperate second of conductive layer 5 that the opening 40 of second insulation on the material 4 exposed to expose 50 in portion again and correspond to the aeolotropic conductive 6 that first of earth connection 34 exposes portion 30 tops, institute is so that have only earth connection 34 to be electrically connected to conductive layer 5 via aeolotropic conductive 6, and holding wire 32 can't be electrically connected to conductive layer 5 via aeolotropic conductive 6.So make can be more easy when making flexible flat cable 1 of the present utility model for the practice, be aeolotropic conductive 6 pasters fit in earth connection 34 first when exposing portion 30, do not need to consider the portion of exposing that whether will avoid touching holding wire 32, also need not consider the generation of the portion of exposing that whether will avoid holding wire 32, so on the manufacturing process to flexible flat cable 1 very big convenience is arranged, and be very suitable for automated production.
Flexible flat cable of the present utility model when making, at first can be on general soft arranging wire punching so that partly conductor expose, this conductor that exposes does not need strict control to have only earth connection to expose, holding wire also can expose; On the conductor that exposes, stick aeolotropic conductive (ACF) paster afterwards, utilize the characteristic of aeolotropic conductive, promptly up and down conducting but about not conducting, prevent to produce between earth connection and the holding wire and electrically connect; Stick the MYLER aluminium foil at last again, because the MYLER aluminium foil is inside and outsidely all to insulate, only on the relative position that needs the conductor of ground connection (earth connection), mode with the laser removal, paste at the MYLER aluminium foil and to allow on the face partly the aluminium foil in zone exposes, allowing this expose aluminium foil is connected with the contact of aeolotropic conductive paster with respect to the conductor that needs ground connection, so just can form grounding function, flexible flat cable of the present utility model is very suitable for automation and produces in a large number when making, can significantly reduce the time and the cost of manufacturing.
In sum, flexible flat cable of the present utility model, utilization is exposed earth connection on existing soft arranging wire, and allowing partly on the MYLER aluminium foil, aluminium foil exposes, the earth connection that will expose through aeolotropic conductive again engages with the aluminium foil that exposes afterwards, so just can form the flexible flat cable with electromagnetic wave shielding effect and grounding function.Because flexible flat cable of the present utility model is structurally very simple, produces in a large number so be easy to reach automation on processing procedure, can effectively reduce production time and cost.In addition, flexible flat cable of the present utility model is for the structure that existing conductive fabric coats winding displacement, and bending and do not have too big variation on volume easily coats that winding displacement is existing to have the bending of being difficult for and unworkable problem so can solve existing conductive fabric.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the utility model claim.