CN201773632U - Flat cable - Google Patents
Flat cable Download PDFInfo
- Publication number
- CN201773632U CN201773632U CN2010201161385U CN201020116138U CN201773632U CN 201773632 U CN201773632 U CN 201773632U CN 2010201161385 U CN2010201161385 U CN 2010201161385U CN 201020116138 U CN201020116138 U CN 201020116138U CN 201773632 U CN201773632 U CN 201773632U
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- dielectric constant
- dielectric layer
- low dielectric
- flat cable
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Abstract
The utility model provides a flat cable, which has different impedance characteristics according to different conductors. In the flat cable 1, a plurality of flat-angle conductors 2 are arranged on a plane according to the specific arranging pitch, insulating films 3 are attached on two sides of the arranged surface of the flat-angle conductors 2, a low-dielectric constant dielectric layer 6 is arranged in a portion of the cable along the width direction and covered by a shielding layer 7, and the impedance characteristic of the portion with the low-dielectric constant dielectric layer 6 is different from that of the portion without the low-dielectric constant dielectric layer 6.
Description
Technical field
The utility model relates to the flat cable of the wiring that can be used in the electrical equipment etc.
Background technology
As the high-speed transfer shield type flat cable that is connected to the electrical equipment on LCD, the plasma display etc., known have such cable: for make transmission signals that characteristic impedance is suitable for high-speed digital signal with or received signal with the characteristic impedance of IC, outside at dielectric film coats dielectric layer with low dielectric constant, and with the resin combination that constitutes by vistanex principal component as dielectric layer with low dielectric constant, thereby make it have good flexibility (for example, with reference to patent documentation 1).
[prior art document]
[patent documentation]
[patent documentation 1] TOHKEMY 2008-47505 communique (Chinese patent application publication number 101127257)
The utility model content
Problem to be solved in the utility model
People require to have different characteristic impedances with the conductor difference in a flat cable.
For this reason, the purpose of this utility model is to provide a kind of with the different flat cables with different impedances of conductor.
The method of dealing with problems and being adopted
The flat cable that the utility model that can address the above problem is related, wherein, many straight angle conductors are arranged with the predetermined arrangement pitch, and from the both sides applying insulating barrier of the hypothesis arrangement surface of described straight angle conductor; It is characterized in that:
At least in the outside of the described insulating barrier of a side, first dielectric layer with low dielectric constant is set in the part of cable widths direction, and in the outside of described first dielectric layer with low dielectric constant screen is set at least;
It is different with the characteristic impedance of the part that does not have described first dielectric layer with low dielectric constant to have the part of described first dielectric layer with low dielectric constant.
In flat cable of the present utility model,, second dielectric layer with low dielectric constant different with described first dielectric layer with low dielectric constant is set in a part of cable of cable widths direction at least in the outside of the described insulating barrier of a side;
Also can make the part that has described first dielectric layer with low dielectric constant different with the characteristic impedance of the part that has described second dielectric layer with low dielectric constant.
In addition, preferably, the screen of screen and the outside that is arranged on described second dielectric layer with low dielectric constant that is arranged on the outside of described first dielectric layer with low dielectric constant is different.
Preferably, in flat cable of the present utility model, described screen is made of wire netting.
The effect of utility model
According to flat cable of the present utility model, by in a part of cable of cable widths direction, first dielectric layer with low dielectric constant being set, thereby can regulate the characteristic impedance of the conductor that has described first dielectric layer with low dielectric constant part.And, can easily make the part that has described first dielectric layer with low dielectric constant different with the characteristic impedance of the part that does not have described first dielectric layer with low dielectric constant.In addition, by setting second dielectric layer with low dielectric constant different in a part of cable of cable widths direction, thereby can regulate the characteristic impedance of the part that does not have described first dielectric layer with low dielectric constant with described first dielectric layer with low dielectric constant.Like this, can be according to the different characteristic impedances of regulating described flat cable of conductor.
The simple declaration of accompanying drawing
[Fig. 1] is the plane graph that the one side of the flat cable in first embodiment is shown.
[Fig. 2] is the plane graph that the another side of the flat cable in first embodiment is shown.
[Fig. 3] is the sectional view that the Width of the flat cable in first embodiment is shown.
[Fig. 4] is the sectional view that the Width of the flat cable in second embodiment is shown.
[Fig. 5] is the sectional view at the Width that is pasted with 1 flat cable under the screened film state on the one side.
[symbol description]
1,1A, 1B: flat cable, 2: straight angle conductor, 3: dielectric film (insulating barrier), 6: dielectric layer with low dielectric constant (first dielectric layer with low dielectric constant), 6a: first dielectric layer with low dielectric constant, 6b: second dielectric layer with low dielectric constant, 9: screen
Preferred embodiment of the utility model
Followingly describe with reference to the example of accompanying drawing to the embodiment of flat cable of the present utility model.
(first embodiment)
At first, the flat cable to first embodiment describes.
As shown in Figure 1 to Figure 3, flat cable 1 possesses many (being 10 in the present embodiment) straight angle conductors 2, these straight angle conductors 2 are arranged with the predetermined arrangement pitch, and attach (lamination) dielectric films (insulating barrier) 3 from the both sides of the arrangement surface (supposing arrangement surface) of straight angle conductor 2.In the outside of dielectric film 3, in a part of cable of cable widths direction, alongst attach dielectric layer with low dielectric constant (first dielectric layer with low dielectric constant) 6 from both sides.And, on the periphery that contains this dielectric layer with low dielectric constant 6, attach screened film 7 with screen 9.Like this, flat cable 1 has formed the form of the flexible flat cable with shielding.
Two ends at the length direction of flat cable 1, go up the conductor exposed division 15 that many all straight angle conductors 2 of formation all expose out in one side (face shown in Figure 1), and, go up to attach dielectric film 3 at another side (surface shown in Figure 2), conductor exposed division 15 plays the binding post function of (it can be connected with the elastic contact chip of electric connector etc.).In addition, as shown in Figure 2, straight angle conductor 2 in conductor exposed division 15 does not spill on the next side (another side), and the terminal reinforcing band 14 that attaching is made of insulating resins such as polyester above dielectric film 3 prevents distortion thereby support the straight angle conductor 2 that is exposed thus.
In the cross section of straight angle conductor 2 is that rectangular copper layers on substrates is pressed tin coating.In the present embodiment, at the whole outer regions formation tin coating of copper base material.As the copper base material, can use copper or copper alloy.In addition, in the conductor exposed division 15 as binding post, acicular crystal (whisker) appears in the compression stress owing to being subjected to being used to electrically contact on the surface of straight angle conductor 2, therefore, for the generation of inhibition of whiskers, preferably, gold-plated on straight angle conductor 2.Gold-plated by carrying out, whisker can not occur, and can not be short-circuited, thereby improve the reliability that be electrically connected of straight angle conductor 2 with electric connector with each straight angle conductor 2 of narrow pitch arrangement.
The width dimensions W of straight angle conductor 2 is preferably more than or equals 0.2mm and be less than or equal to 0.8mm.In addition, the thickness of straight angle conductor 2 is preferably more than or equals 0.02mm and be less than or equal to 0.1mm.In addition, the arrangement pitch P of straight angle conductor 2 is preferably about 0.5mm～1.0mm.
Dielectric layer with low dielectric constant 6 is used to regulate the characteristic impedance of flat cable 1, in the flat cable 1 of the present embodiment, by being laminated to the adhesive agent layer 11 on the dielectric layer with low dielectric constant 6, dielectric layer with low dielectric constant 6 is attached to the outside of dielectric film 3.For example, under the situation with 30 straight angle conductors 2, dielectric layer with low dielectric constant 6 is arranged on the inside and outside two sides of 15 straight angle conductors 2 that broad ways is divided into two.Like this, in the part of cable widths direction, be provided with the flat cable 1 of dielectric layer with low dielectric constant 6, the dielectric constant that is pasted with the part of dielectric layer with low dielectric constant 6 diminishes, and, compare with the straight angle conductor 2 in the scope that does not attach dielectric layer with low dielectric constant 6, the characteristic impedance that is pasted with the straight angle conductor 2 in the scope of dielectric layer with low dielectric constant 6 is bigger.In order further to strengthen characteristic impedance, can increase the thickness of dielectric layer with low dielectric constant 6, perhaps can change material to reduce the dielectric constant of dielectric layer with low dielectric constant 6.In order further to reduce characteristic impedance, can reduce the thickness of dielectric layer with low dielectric constant 6, perhaps can change material to increase the dielectric constant of dielectric layer with low dielectric constant 6.
As dielectric layer with low dielectric constant 6, use the little and resin material that flexibility and processability are all excellent of dielectric constant as the material of principal component, in the present embodiment, use vistanex or mylar.As this vistanex, can enumerate (for example) polyvinyl resin (PE), acrylic resin (PP), sour modified polyvinyl resin, sour modified polypropylene resin, ethylene-vinyl acetate copolymer (EVA), ethylene-methyl methacrylate methyl terpolymer (EMMA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methacrylic acid copolymer (EMAA) and ionomer.And, in these resins, as the excellent especially vistanex of flexibility, can enumerate polyvinyl resin, sour modified polyvinyl resin, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer and ethylene-methacrylic acid copolymer.In addition, as the excellent especially vistanex of processability, can enumerate (for example) ldpe resin (LDPE) or linear low density polyethylene resin polyvinyl resins such as (LLDPE).
As mylar, can enumerate polyethylene terephthalate (PET).Particularly, under the situation of the thinner thickness of dielectric layer with low dielectric constant, preferably use PET.This can guarantee flexibility and can realize cheapization.
In addition, in the present embodiment, be the dielectric layer with low dielectric constant 6 of principal component by forming with the resin combination that constitutes by vistanex, resin combination is not foamed, and can improve the flexibility of flat cable 1.Therefore, the flexing (bending) in the time of can preventing flat cable 1 bending effectively.In addition, because the have specific thickness dielectric constant of dielectric layer with low dielectric constant 6 of (100 μ m～350 μ m) is reduced in 2.2～3.2 the scope, therefore, characteristic impedance value can be set at the arbitrary value in the scope of 50 Ω～110 Ω.
In addition, above-mentioned vistanex can use or can be used as two or more mixture uses separately.
In addition, when formation is the dielectric layer with low dielectric constant 6 of principal component with the resin combination that is made of vistanex, can makes and contain fire retardant in the dielectric layer with low dielectric constant 6 to give its anti-flammability.As this fire retardant, for example can enumerate halogen fire retardant, phosphate or phosphorus compound, nitrogen-containing compound, metal hydroxides etc.
Even do not give dielectric layer with low dielectric constant 6,, can in dielectric layer with low dielectric constant, not contain fire retardant as long as make the flame retardant test of flat cable 1 qualified with anti-flammability yet.
Screened film 7 is preferably the material that is made of adhesion layer 8, screen 9 and resin bed 10.As screen 9, can use metal forming or wire nettings such as aluminium or copper.When using wire netting, the density by changing net can the regulating characteristics impedance, and can make the thickness attenuation of dielectric layer with low dielectric constant.
In addition, resin bed 10 is polyester such as PET.Resin bed 10 can prevent peeling off of screen 9 or corrode, thus the mechanical strength of raising flat cable 1.
Also can use by screen 9 and adhesion layer 8 these two layers of screened films that constitutes.
As shown in Figure 3, use two screened films 7 respectively, the outside of dielectric film 3 that is attached to the outside of dielectric layer with low dielectric constant 6 respectively and does not have the part of dielectric layer with low dielectric constant 6 on inside and outside two sides.Separately paste screened film 7 by broad ways, even thereby at dielectric layer with low dielectric constant 6 with there is not the portion boundary of dielectric layer with low dielectric constant 6 partly to locate to form stepped, also screened film 7 can be attached to the outside of dielectric layer with low dielectric constant 6 and dielectric film 3 respectively and not form the gap.
As long as screened film 7 is attached on the conductor that needs the regulating characteristics impedance at least.In addition, and the situation when being not precluded within one side and go up attaching 1 film.
The screen 9 of this screened film 7 needn't be for impedance matching ground connection, still, also can be by the conductivity adhesion material and with one or more straight angle conductor 2 conductings as earth connection.In addition, also earth rod can be set, and, make the screen 9 and earth rod conducting of screened film 7 by the conductivity adhesion material.
In addition, screened film 7 also can only be arranged on the one side of flat cable 1, in this case, also can obtain certain shield effectiveness, and may be controlled to this.Under the situation on the one side that screened film 7 only is arranged on flat cable 1, dielectric layer with low dielectric constant 6 only can be arranged on the one side on, also dielectric layer with low dielectric constant 6 can be arranged on two-sided on.
In addition,, as mentioned above, use material,, just needn't further attach resin molding etc. in its outside as long as when attaching, make resin bed 10 be positioned at the outside with resin beds 10 such as PET as screened film 7.Yet, on the whole periphery of screened film 7, can twine the resin molding that constitutes by PE T etc., perhaps can be from inside and outside applying resin molding to cover the whole periphery of screened film 7.
In addition, by on Width, further separately attaching dielectric layer with low dielectric constant 6, the further sectionalization of part that can characteristic impedance is different subtly.
In addition, as the adhesion layer 8 of screened film 7, when using the polyesters adhesive, also can make this adhesion layer 8 itself play the effect of dielectric layer with low dielectric constant.In this case, consider the thickness of the dielectric constant of adhesion layer 8, thereby can obtain desired characteristic impedance with adjustment dielectric layer with low dielectric constant 6.By attach the screened film 7 with the adhesion layer 8 that is made of adhesives such as polyesters from the two sides, (for example) also can make the characteristic impedance of holding wire reach 50 Ω.
(second embodiment)
Next the flat cable to second embodiment describes.
In addition, for first embodiment in identical composition and identical structure division, compile with identical symbol, thereby omit explanation.
As shown in Figure 4, in this flat cable 1A, in the outside of dielectric film 3, broad ways is set up in parallel the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b with differing dielectric constant.Outside at the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b attaches screened film 7.
Comprising the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b is in order to regulate the characteristic impedance of flat cable 1A.For example, under situation with 30 straight angle conductors 2, the first dielectric layer with low dielectric constant 6a is arranged in the inside and outside two sides of 15 straight angle conductors 2 that are divided into two on the broad ways, and the second dielectric layer with low dielectric constant 6b is arranged in the inside and outside two sides of 15 other straight angle conductors 2.Compare with the first dielectric layer with low dielectric constant 6a, the dielectric constant of the formed second dielectric layer with low dielectric constant 6b is littler or thickness is thicker.Thus, compare with the straight angle conductor 2 in the scope that is pasted with the first dielectric layer with low dielectric constant 6a, the characteristic impedance that is pasted with the straight angle conductor 2 in the scope of the second dielectric layer with low dielectric constant 6b is bigger.
Under the situation of this flat cable 1A, use two screened films 7 on inside and outside two sides respectively, and be attached to the outside of the first dielectric layer with low dielectric constant 6a and the outside of the second dielectric layer with low dielectric constant 6b respectively.Thus, even form steppedly in the boundary portion office of the different first dielectric layer with low dielectric constant 6a of thickness and the second dielectric layer with low dielectric constant 6b, also screened film 7 can be attached to the outside of the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b respectively and not form the gap.
The utility model is not got rid of the situation when only attaching 1 screened film on one side.For example, as shown in Figure 5, can form such flat cable: only on one side, arrange side by side first dielectric layer with low dielectric constant and second dielectric layer with low dielectric constant, and attach a screened film thereon.
Like this, by above-mentioned flat cable 1A, 1B, therefore broad ways is set up in parallel the dielectric constant different a plurality of first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b, can easily make the characteristic impedance in the part of the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b different.
In addition, can the thickness difference between the first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b or dielectric constant difference or the two all inequality.
In addition, in above-mentioned flat cable 1A, 1B, be that broad ways is set up in parallel two different dielectric layers of dielectric constant, the i.e. first dielectric layer with low dielectric constant 6a and the second dielectric layer with low dielectric constant 6b, but being not limited to two dielectric layers, also can be more than three.
[embodiment]
(embodiment 1)
Measure the following flat cable (flat cable of first embodiment, it is for only being provided with the example of dielectric layer with low dielectric constant and screened film on one side) characteristic impedance, described flat cable is such flat cable: in the outside of a side dielectric film, in a part of cable of broad ways, be provided with dielectric layer with low dielectric constant, and be provided with screened film in its outside.
(1) material of each several part and thickness
Straight angle conductor
Material: copper
Thickness: 35 μ m
Dielectric film (comprising adhesion layer)
Material: polyester
Thickness: 60 μ m
Dielectric layer with low dielectric constant
Material: polyethylene
Thickness: 170 μ m
Screened film
Material: aluminium (comprising polyesters adhesion layer and the resin bed that constitutes by PET)
Thickness: 60 μ m
(2) measurement result
Be provided with the part of dielectric layer with low dielectric constant: 100 Ω
The part of dielectric layer with low dielectric constant is not set: 55 Ω
Like this, in above-mentioned flat cable,, the impedance of the part that is provided with dielectric layer with low dielectric constant is increased with respect to the part that dielectric layer with low dielectric constant is not set.
(embodiment 2)
Measure the following flat cable (flat cable of second embodiment, it is for being provided with the example (Fig. 5) of dielectric layer with low dielectric constant and screened film on one side) characteristic impedance, described flat cable is such flat cable: in the outside of a side dielectric film, be set side by side with the first different dielectric layer with low dielectric constant of dielectric constant and second dielectric layer with low dielectric constant, and be provided with screened film in its outside.
(1) material of each several part and thickness
Straight angle conductor
Material: copper
Thickness: 35 μ m
Dielectric film (comprising adhesion layer)
Material: polyester
Thickness: 60 μ m
First dielectric layer with low dielectric constant
Material: PET
Thickness: 50 μ m
Second dielectric layer with low dielectric constant
Material: polyethylene
Thickness: 170 μ m
Screened film
Material: aluminium (comprising polyesters adhesive and the resin bed that constitutes by PET)
Thickness: 60 μ m
(2) measurement result
Be provided with the part of first dielectric layer with low dielectric constant: 90 Ω
Be provided with the part of second dielectric layer with low dielectric constant: 100 Ω
Like this, in above-mentioned flat cable, can easily make the part that is provided with first dielectric layer with low dielectric constant different with the impedance of the part that is provided with second dielectric layer with low dielectric constant.
Claims (4)
1. flat cable, wherein, many straight angle conductors are arranged with the predetermined arrangement pitch, and from the both sides applying insulating barrier of the hypothesis arrangement surface of described straight angle conductor, it is characterized in that:
At least in the outside of the described insulating barrier of a side, in a part of cable of cable widths direction, be provided with first dielectric layer with low dielectric constant, and be provided with screen in the outside of described first dielectric layer with low dielectric constant at least;
It is different with the characteristic impedance of the part that does not have described first dielectric layer with low dielectric constant to have the part of described first dielectric layer with low dielectric constant.
2. the described flat cable of claim 1 is characterized in that:
At least in the outside of the described insulating barrier of a side, in a part of cable of cable widths direction, be provided with second dielectric layer with low dielectric constant different with described first dielectric layer with low dielectric constant,
The part that has described first dielectric layer with low dielectric constant is different with the characteristic impedance of the part that has described second dielectric layer with low dielectric constant.
3. the described flat cable of claim 2 is characterized in that:
The screen that is arranged on described first dielectric layer with low dielectric constant outside is inequality with the screen that is arranged on described second dielectric layer with low dielectric constant outside.
4. any described flat cable in the claim 1 to 3 is characterized in that:
Described screen is made of wire netting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201161385U CN201773632U (en) | 2010-02-12 | 2010-02-12 | Flat cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201161385U CN201773632U (en) | 2010-02-12 | 2010-02-12 | Flat cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773632U true CN201773632U (en) | 2011-03-23 |
Family
ID=43753474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201161385U Expired - Lifetime CN201773632U (en) | 2010-02-12 | 2010-02-12 | Flat cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773632U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254607A (en) * | 2011-04-21 | 2011-11-23 | 苏州市安特菲尔新材料有限公司 | Environment-friendly flexible flat cable and manufacturing method thereof |
| CN103165228A (en) * | 2011-12-15 | 2013-06-19 | 星电株式会社 | Flexible flat cable |
| CN103854731A (en) * | 2013-05-03 | 2014-06-11 | 亳州联滔电子有限公司 | Cable |
| CN111210933A (en) * | 2018-11-21 | 2020-05-29 | 贸联国际股份有限公司 | High-frequency flexible flat cable |
| CN112309617A (en) * | 2019-07-31 | 2021-02-02 | 台湾立讯精密有限公司 | Flexible flat cable, manufacturing method thereof and signal transmission device |
| CN113851257A (en) * | 2020-06-26 | 2021-12-28 | 莫列斯有限公司 | Electric wire and composite cable |
-
2010
- 2010-02-12 CN CN2010201161385U patent/CN201773632U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254607A (en) * | 2011-04-21 | 2011-11-23 | 苏州市安特菲尔新材料有限公司 | Environment-friendly flexible flat cable and manufacturing method thereof |
| CN102254607B (en) * | 2011-04-21 | 2012-11-07 | 苏州市安特菲尔新材料有限公司 | Environment-friendly flexible flat cable and manufacturing method thereof |
| CN103165228A (en) * | 2011-12-15 | 2013-06-19 | 星电株式会社 | Flexible flat cable |
| CN103854731A (en) * | 2013-05-03 | 2014-06-11 | 亳州联滔电子有限公司 | Cable |
| CN111210933A (en) * | 2018-11-21 | 2020-05-29 | 贸联国际股份有限公司 | High-frequency flexible flat cable |
| US10978770B2 (en) | 2018-11-21 | 2021-04-13 | Bizlink International Corp. | Flexible flat cable comprising conductor layers disposed on opposite sides of a metal isolation layer |
| CN112309617A (en) * | 2019-07-31 | 2021-02-02 | 台湾立讯精密有限公司 | Flexible flat cable, manufacturing method thereof and signal transmission device |
| CN113851257A (en) * | 2020-06-26 | 2021-12-28 | 莫列斯有限公司 | Electric wire and composite cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUMITOMO ELECTRIC INDUSTRIES LTD. Free format text: FORMER OWNER: SUMITOMO ELECTRIC INTERCONNECT PRODUCTS (SHANGHAI) LTD. Effective date: 20110513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: FACTORY BUILDING 35, NO. 281, FASAI ROAD, WAIGAOQIAO FREE TRADE ZONE, SHANGHAI TO: TOCHIGI PREFECTURE, JAPAN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110513 Address after: Japan Tochigi Patentee after: Sumitomo Electric Industries, Ltd. Address before: Shanghai Waigaoqiao Free Trade Zone No. 281 Building No. 35 synthesis method Patentee before: Sumitomo Electric Interconnect Products (Shanghai) Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
|
| CX01 | Expiry of patent term |