CN1983465A - Ribbon flexible cable with free impedance control - Google Patents
Ribbon flexible cable with free impedance control Download PDFInfo
- Publication number
- CN1983465A CN1983465A CN 200510132141 CN200510132141A CN1983465A CN 1983465 A CN1983465 A CN 1983465A CN 200510132141 CN200510132141 CN 200510132141 CN 200510132141 A CN200510132141 A CN 200510132141A CN 1983465 A CN1983465 A CN 1983465A
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- impedance
- cable
- metal material
- different
- flexible cable
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- 239000007769 metal material Substances 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
A Flexible Flat Cable (FFC) capable of freely controlling impedance is characterized in that more than one metal layer is respectively arranged on the upper surface and the lower surface of a conductive wire layer of the Flexible Flat Cable to be used as a coating impedance control layer so as to control the impedance of the Flexible Flat Cable. The metal layers may be made of the same or different metal materials. The metal material forming the coating impedance control layer is paved on the surface of the conductive wire layer of the ribbon flexible cable in blocks, and the width and the thickness of each block can be different so as to be used for different impedance matching.
Description
Technical field
The present invention relates to a kind of banded flexible cable (Flat Flexible Cable is called for short FFC), particularly relate to a kind of band flexible electric cable with impedance freedom control.
Background technology
At present, because the signal transmssion line such as the mobile computer signal transmssion line of many electronic products all require the resistance value specification, to reach impedance matching, the cable that use can control group usually, as flexible print circuit (Flexible Printed Circuit is called for short FPC).Flexible print circuit is the printed circuit made from flexible insulating substrate.It is owing to light and handy accurate and flexible folding, for product design brings great convenience and flexibility.Now be widely used in mobile phone, the personal digital assistant, digital camera, e-dictionary, printer is on the electronic products such as laptop computer and automobile.Utilize flexible print circuit can dwindle the volume of electronic product greatly, be suitable for the needs that electronic product develops to high density, miniaturization, highly reliable direction.The electric wire layer of flexible print circuit has the tin-coated copper electric wire of many different in width, impedance matching as different demands, by electric wire width tables of comparisons such as a resistance and tin copper, can learn the electric wire that how wide how many impedance correspondences are, flexible print circuit making sheet manufacturer is according to customer demand, wash the electric wire on surface wide or wash carefully, mating different impedances, so expense is higher.
Please refer to Fig. 1, at present employed two end interfaces and signal transmssion line (Transmission Line) between liquid crystal indicator and the system host board.According to interface standard, the specification of the signal transmssion line 15 between application and liquid crystal indicator interface 10 and the system host plate interface 20, must possess specified impedance (as 100 ohm), could be complementary with the circuit impedance of liquid crystal indicator interface 10 and system host plate interface 20.In other words, be applicable to the signal transmssion line 15 between liquid crystal indicator interface 10 and the motherboard interface 20, the specification that must possess the specified impedance (as 100 ohm) of regulation, for example, the impedances such as flexible print circuit that must use specification to have specified impedance meet the requirements of signal transmssion line, could instruct by the correct execution transmission signals, avoid malfunction.Otherwise, will cause the loss of signal, distortion or distortion.
As shown in Figure 2, use banded flexible cable 30, because its characteristic impedance value is mostly about 130 ohm, do not meet the use specification standards of the signal transmssion line (as employed signal transmssion line 15 between liquid crystal indicator interface 10 and the system host plate interface 20) of some electronic product interface, inapplicable as above-mentioned signal transmssion line.Yet the conventional band flexible cable has flexible print circuit equally can free bend, coiling, folding, can require to arrange arbitrarily according to space layout, and it is mobile arbitrarily and flexible at three dimensions, thereby reach the incorporate characteristics that the components and parts assembling is connected with lead, and banded flexible cable is simple in structure, as shown in Figure 3, it constitutes three layer laminate structures by upper strata ground wire 31, electric wire layer 32 and lower floor's ground wire 33 are superimposed; Hot pressing must be coated on electric wire layer 32 middle and constitute one through machine for this upper strata ground wire 31 and lower floor's ground wire 33, thus have advantage simple for production and cheap for manufacturing cost, and have softness, anti-combustion, cold-resistant thermal property again.
The cable two ends of banded flexible cable can be connected with universal serial bus (universal serial bus, be called for short USB) or any chip, the desired impedance difference of each chip or USB, owing to can't change impedance, a conventional band flexible cable can only satisfy a kind of chip.If will connect many core assemblies sheet simultaneously, may need multi-ribbon shape flexible cable to satisfy so.
If the characteristic impedance value of banded flexible cable can be changed, just not only can satisfy the use specification requirement of the signal transmssion line (as employed signal transmssion line 15 between liquid crystal indicator interface 10 and the system host plate interface 20) of multiple electronic product interface, and can connect various chips simultaneously, like this, except the manufacturing cost that can save a large amount of signal transmssion lines, and can reform and develop the new purposes of banded flexible cable, make banded flexible cable can be used as the signal transmssion line (as employed signal transmssion line 15 between liquid crystal indicator interface 10 and the system host plate interface 20) of multiple electronic product interface, and make signal transmssion line have the softness characteristics of banded flexible cable.
The premium properties of the exclusive lighting of banded flexible cable product, ultrathin type, anti-complications makes it to be widely used in high-tech areas such as radio instrument instrument, audio-visual equipment, calculator communication and Aerospace Products.
Therefore if can replace expensive flexible print circuit, can effectively reduce cost with the banded flexible cable of controllable impedance.
Summary of the invention
In order to solve above-mentioned the problems of the prior art and defective, technical problem to be solved by this invention is to provide a kind of banded flexible cable of controllable impedance, not only can satisfy the use specification requirement of the signal transmssion line of multiple electronic product interface, and can connect various chips simultaneously.
For achieving the above object, band flexible electric cable with impedance freedom control of the present invention, the upper and lower surface of its electric wire layer respectively is provided with the above metal level of one deck as coating the impedance Control layer to replace the ground wire of conventional band flexible cable.The tin-coated copper electric wire of described metal level and electric wire layer interacts and changes banded flexible cable in order to control the impedance of banded flexible cable.Above-mentioned metal level can be made up of identical metal material or different metal materials.Be layed in the upper and lower surface of the electric wire layer of banded flexible cable as the metal material blockette that coats the impedance Control layer, and the width of each block can be different with thickness, with as different impedance matchings.
In sum, the invention has the advantages that: banded flexible cable of the present invention, can free control group, to reach effect same as flexible print circuit.So can be with band flexible electric cable with impedance freedom control place of flexible printed circuit of the present invention, and banded flexible cable flexible print circuit is cheap, therefore can reduce the cost of the electronic installation of mobile computer or other script application flexibility printed circuit greatly.Banded flexible cable both can be used as the mobile computer signal transmssion line and had used, and also can connect various chips or USB simultaneously.The present invention makes banded flexible cable have outside the new purposes, and can make signal transmssion line have softness, anti-combustion, cold-resistant thermal property.
Description of drawings
Fig. 1 is the schematic diagram of interface transmission between available liquid crystal display device interface and the system host plate interface;
Fig. 2 is the overall appearance figure of the banded flexible cable of prior art;
Fig. 3 is the sectional structure chart along 3-3 line among Fig. 2;
Fig. 4 is the overall appearance figure of band flexible electric cable with impedance freedom control of the present invention;
Fig. 5 is the sectional structure chart along 5-5 line among Fig. 4; And
The schematic diagram of the coating impedance Control layer that Fig. 6 is made up of different metal materials for band flexible electric cable with impedance freedom control of the present invention.
Wherein, Reference numeral:
10-liquid crystal indicator interface
The 15-signal transmssion line
20-motherboard interface
30-conventional band flexible cable
The upper strata ground wire of 31-conventional band flexible cable
The electric wire layer of 32-conventional band flexible cable
Lower floor's ground wire of 33-conventional band flexible cable
The banded flexible cable of 40-the present invention
The 41-upper strata coats the impedance Control layer
43-lower floor coats the impedance Control layer
61-metal material one
62-metal material two
63-metal material three
64-metal material four
Embodiment
Below, will elaborate to better embodiment of the present invention in conjunction with the accompanying drawings.
Please refer to Fig. 2, the banded flexible cable 30 of having represented prior art among the figure, the conventional band flexible cable because its characteristic impedance value approximately all about 130 ohm, and can not change, do not meet the use specification standards of the signal transmssion line of some electronic equipment interfaces, be not suitable for signal transmssion line as some electronic equipment interfaces.Yet, banded flexible cable simple in structure, as shown in Figure 3, Fig. 3 is the sectional structure chart along 3-3 line among Fig. 2, constitutes three layer laminate structures by upper strata ground wire 31, electric wire layer 32 and lower floor's ground wire 33 are superimposed; Hot pressing must be coated on electric wire layer 32 middle and constitute one through machine, thus have advantage simple for production and cheap for manufacturing cost, and have softness, anti-combustion, cold-resistant thermal property again.Wherein, electric wire layer 32 has several tin-coated copper electric wires to be arranged side by side at interval, can be used to transmission signals.
Please refer to Fig. 4 now, this figure is the overall appearance figure of band flexible electric cable with impedance freedom control of the present invention, as shown in Figure 4, band flexible electric cable with impedance freedom control of the present invention is respectively spread the above metal level of one deck on the upper and lower surface of the electric wire of conventional band flexible cable, as coating the impedance Control layer, with the ground wire of the upper and lower surface that replaces the electric wire that is positioned at the conventional band flexible cable originally.The present invention is by interacting to reach different impedances with the electric wire layer as the metal material that coats the impedance Control layer.Fig. 5 is the sectional structure chart along 5-5 line among Fig. 4, and in Fig. 5, the electric wire layer 32 of middle conventional band flexible cable is generally the tin-coated copper electric wire and has several tin-coated copper electric wires to be arranged side by side at interval, can be used to transmission signals.The upper surface 41 and the lower surface 43 of electric wire layer are the coating impedance Control layer of band flexible electric cable with impedance freedom control of the present invention.
The metal material that this coats the impedance Control layer can adopt in metal such as free silver slurry, silver-colored carbon slurry, silver foil, aluminium paste, aluminium foil, Copper Foil and the metallic composite any one or more.
In one embodiment of this invention, the metal level of the coating impedance Control layer of band flexible electric cable with impedance freedom control is made up of identical metal material.The upper and lower surface that identical metal material blockette is layed in this band shape flexible cable electric wire layer is with as different impedance matchings.The width of its each block can be different, and the thickness of its each block also can be different.Change the width of each block or the resistance value that thickness can change band flexible electric cable with impedance freedom control.
Band flexible electric cable with impedance freedom control of the present invention, its two ends have a plurality of interfaces, are communicated with the different blocks that coats the impedance Control layer respectively, to reach different resistance values.Therefore, the band flexible electric cable with impedance freedom control by a basic invention can connect various chips or a plurality of USB port simultaneously.
In another embodiment of the present invention, the above metal level of one deck of the coating impedance Control layer of band flexible electric cable with impedance freedom control is made up of different metal materials.Please refer to Fig. 6, the schematic diagram of this figure coating impedance Control layer that to be band flexible electric cable with impedance freedom control of the present invention be made up of different metal materials.The surface that the metal material that metal material 1, metal material 2 62, metal material 3 63, metal material 4 64 are different, blockette are layed in banded flexible cable is with as different impedance matchings.Four kinds of can provide for present embodiment of above-mentioned different metal material, but be not limited in being made up of four kinds of metal materials of present embodiment also can be by being less than four kinds or form more than four kinds of metal materials.The width of each block of metal material can be different, and the thickness of its each block also can be different.The banded flexible cable of the free control group of present embodiment, its impedance can be by only changing metal material combination of forming its coating impedance Control layer and changing, also the resistance value that can change band flexible electric cable with impedance freedom control by the width or the thickness of each metal material of change also can reach the resistance value that changes band flexible electric cable with impedance freedom control by the number of plies that changes metal level.
Band flexible electric cable with impedance freedom control of the present invention, its two ends have a plurality of interfaces, are communicated with the different blocks that coats the impedance Control layer respectively, to reach different resistance values.Therefore, the band flexible electric cable with impedance freedom control by a basic invention can connect various chips or a plurality of USB port simultaneously.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1, a kind of band flexible electric cable with impedance freedom control is characterized in that, respectively is provided with the above metal level of one deck as coating the impedance Control layer to control the impedance of described banded flexible cable in the upper and lower surface of banded flexible cable electric wire layer.
2, band flexible electric cable with impedance freedom control according to claim 1 is characterized in that, described metal level is made up of identical metal material.
3, band flexible electric cable with impedance freedom control according to claim 2 is characterized in that, described identical metal material is layed in described banded flexible cable in the block mode surface is with as different impedance matchings.
4, band flexible electric cable with impedance freedom control according to claim 3 is characterized in that, described identical metal material, the width difference of its each block.
5, band flexible electric cable with impedance freedom control according to claim 3 is characterized in that, described identical metal material, the thickness difference of its each block.
6, band flexible electric cable with impedance freedom control according to claim 1 is characterized in that, described metal level is made up of different metal materials.
7, band flexible electric cable with impedance freedom control according to claim 6 is characterized in that, the surface that described different metal material blockette is layed in described banded flexible cable is with as different impedance matchings.
8, band flexible electric cable with impedance freedom control according to claim 7 is characterized in that, described different metal material, the width difference of its each block.
9, band flexible electric cable with impedance freedom control according to claim 7 is characterized in that, described different metal material, the thickness difference of its each block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510132141 CN1983465A (en) | 2005-12-16 | 2005-12-16 | Ribbon flexible cable with free impedance control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510132141 CN1983465A (en) | 2005-12-16 | 2005-12-16 | Ribbon flexible cable with free impedance control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1983465A true CN1983465A (en) | 2007-06-20 |
Family
ID=38165914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510132141 Pending CN1983465A (en) | 2005-12-16 | 2005-12-16 | Ribbon flexible cable with free impedance control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1983465A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165236A (en) * | 2011-12-19 | 2013-06-19 | 富士康(昆山)电脑接插件有限公司 | Flexible flat cable |
| CN104425061A (en) * | 2013-09-04 | 2015-03-18 | 富士康(昆山)电脑接插件有限公司 | Flat cable |
-
2005
- 2005-12-16 CN CN 200510132141 patent/CN1983465A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165236A (en) * | 2011-12-19 | 2013-06-19 | 富士康(昆山)电脑接插件有限公司 | Flexible flat cable |
| CN103165236B (en) * | 2011-12-19 | 2016-08-10 | 富士康(昆山)电脑接插件有限公司 | Flexible flat cable |
| CN104425061A (en) * | 2013-09-04 | 2015-03-18 | 富士康(昆山)电脑接插件有限公司 | Flat cable |
| CN104425061B (en) * | 2013-09-04 | 2017-01-04 | 富士康(昆山)电脑接插件有限公司 | Flat cable |
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