CN1776830A - Signal transmission cable and method for making same - Google Patents

Signal transmission cable and method for making same Download PDF

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Publication number
CN1776830A
CN1776830A CN 200510125397 CN200510125397A CN1776830A CN 1776830 A CN1776830 A CN 1776830A CN 200510125397 CN200510125397 CN 200510125397 CN 200510125397 A CN200510125397 A CN 200510125397A CN 1776830 A CN1776830 A CN 1776830A
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China
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sheet
cable
dielectric
electric conductor
signal
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CN 200510125397
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Chinese (zh)
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石丸幸宏
富田佳宏
柴田修
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Publication of CN1776830A publication Critical patent/CN1776830A/en
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Abstract

A signal transmission cable comprises dielectric core layers extending along the longitudinal direction of the cable; a first conductive layer which is layered on an outer surface of the dielectric core layers; a second conductive layer which is layered on the other outer surface of the dielectric core layers; and insulating material for covering the dielectric core layers and the first and second layers. Each and all of the dielectric core layers and the first and second layers have the same width, and each of the first and second layers has the same thickness. The insulating material is covered with a shield layer, and the shield layer is covered with a sheath, wherein the first and second layers form a pair of differential signal lines.

Description

The manufacture method of signal-transmitting cable and signal-transmitting cable
Technical field
The present invention relates to the manufacture method of signal-transmitting cable and signal-transmitting cable, the signal-transmitting cable of particularly can the high-speed transfer reliability high differential wave.
Background technology
In recent years, with net machine and home computer the progress of high frequencyization of the information machine of representative, swift and violent unusual, its clock pulse frequency has become the zone of crossing GHz.Accompany with it, in the signal-transmitting cable that between each machine, connects, also more and more require high-speed data transmission speed.In addition, be accompanied by the high speed of signal transmission, holding wire also increases along with the high capacity of data, and is also very high to the requirement of the multicore cable of correspondingly high speed.
Figure 40 represents the topology example of the soft multicore cable of prior art.As shown in figure 40, on insulation film 1000, dispose the many center conductors 1001 that transmit signals side by side after, cover center conductors 1001 with insulation film 1002, thereby form microstrip structure.
In addition, Figure 41 A, Figure 41 B represent the topology example of the multicore coaxial cable of prior art.Shown in Figure 41 B, multicore coaxial cable has many fine rule coaxial cables 1110, dispose these many fine rule coaxial cables 1110 side by side after, cover its integral body with insulation film 1115.Fine rule coaxial cable 1110 covers the center conductor 1111 that transmits signal with insulation film 1112 shown in Figure 41 A, and then covers its periphery with external conductor 1113 that becomes ground plane and insulation film 1114.
Soft multicore cable shown in Figure 40, since simple in structure, thus can make cheaply, but,, be difficult to prevent the deterioration of signal transmission quality so be subjected to the influence of extraneous noise easily because center conductor 1001 is not shielded fully.
Multicore coaxial cable shown in Figure 41 A has very high noise patience, but because complex structure, so cost an arm and a leg.
In Japanese documentation (spy opens 2003-323824 number), announced relevant technologies about the manufacture method of the multicore coaxial cable that addresses this is that.Figure 42 A-Figure 42 D is the figure of the manufacture method of the multicore coaxial cable announced of this patent documentation of expression.Shown in Figure 42 A, prepare the two sides and form after external conductor 1120,1122 ' the 1st insulation film 1121 external conductor 1122 ' above the etching (external conductor 1122 ' is not shown), unified formation with certain spaced many holding wires 1122.Then, shown in Figure 42 B, clip the 2nd insulation film 1123, multistage stacked arrangement the 1st insulation film 1121 of the unified holding wire 1122 that forms, behind the stacked external conductor 1124 of higher level, and each layer of crimping.Then, shown in Figure 42 C, utilize slicing machine that the duplexer of making is vertically cut apart, thereby cut out many multicore coaxial cables 1130.At last, shown in Figure 42 D,, form external conductor 1131 in the side of the multicore coaxial cable 1130 that cuts out.External conductor 1131 joins at the external conductor 1120 of the inside of cable side and multicore coaxial cable 1130, is connected to each other.So just finished multicore coaxial cable.
After adopting the manufacture method shown in Figure 42 A-Figure 42 D, owing to can unify to cut out many multicore coaxial cables, so can make cheaply, and become the center conductor of holding wire, adopt the structure that is covered by external conductor fully, so when having very high noise patience, can also prevent crosstalking between the transmission line.
, although the multicore coaxial cable that adopts the manufacture method shown in Figure 42 A-Figure 42 D to form has excellent noise patience, be difficult to eliminate fully the influence of extraneous noise.And, though have excellent noise patience, after the transmission speed of signal becomes zone above GHz, because extraneous noise becomes the major reason of the reliability decrease that makes transmission signals, so in high-speed transfer, even multicore coaxial cable also must take to prevent the measure of extraneous noise.
As extraneous noise being had very strong jamproof transmission means, the differential signal transmission mode is widely known by the people.This mode uses a pair of holding wire to send anti-phase signal mutually, obtain its difference after, offset extraneous noise, so from the principle, can not produce extraneous noise.
Figure 43 represents the basic structure of the differential signal transmission cable 1200 of prior art.As shown in figure 43, the periphery of the inner lead 1201 that constitutes at twisted wire by many conductor bundles, be arranged in parallel and be provided with 2 holding wires of insulating barrier 1202, the periphery of the holding wire of this 2 core (doublet cord), surround the external conductor 1203 that becomes screen, and then, surround the crust 1204 that constitutes by insulating material in its periphery.In addition, for external conductor 1203 earthing potentials that become screen, so, leaky line (drain line) 1205 and external conductor 1203 are provided with contiguously along the holding wire of doublet cord.As the relevant prior art of utilizing this doublet cord transmission differential signal, for example, in following Japanese documentation, recording and narrating.
The spy opens 2001-093357 number
The spy opens 2002-358841 number
The spy opens 2004-087198 number
On the other hand, be accompanied by the increase of holding wire, realized making many differential signal lines (holding wires of 2 cores) cable arranged side by side.Figure 44 represents the example of the multicore differential signal transmission cable 1210 of the ribbon type that many differential signal lines are arranged side by side into a single integrated structure.It is known as " biobelt circuit ", and many pair of differential transmission lines that are made of the conducting wiring 1211 and 1212 that forms are relative to each other imbedded in the dielectric layer 1213 by parallel, on the two sides of dielectric layer 1213, forms screen 1214,1215.If in dielectric layer, use the pliability film, just can constitute flexible differential signal transmission cable (flat cable).
In addition, in Figure 44,, told about the vertically example of the biobelt circuit of coupling of pair of conductive wiring as differential signal line.But can also adopt the pair of conductive structure transversely arranged, that be known as what is called " microstripline " that connects up.As the relevant prior art of utilizing this multi-core ribbon cable transmission differential signal, in following Japanese documentation, recording and narrating.
The spy opens 2001-210959 number
The spy opens 2002-158452 number
Figure 45 A-Figure 45 E represents the manufacture method of differential signal transmission cable shown in Figure 44.In Figure 45 A, prepare to form the material of conductive foil 1214,1221 on the two sides of dielectric piece 1220, shown in Figure 45 B, etching Butut on the conductive foil 1221 that forms on dielectric piece 1220 forms many conducting wirings 1211.Then, shown in Figure 45 C, after forming dielectric layer 1222 and conductive foil 1223 on whole of dielectric piece 1220, shown in Figure 45 D, etching Butut on this conductive foil 1223 forms many conducting wirings 1212.At this moment, conducting wiring 1212 is by contraposition on the position relative with conducting wiring 1211, and and conducting wiring 1211 have same widths ground and form.Like this, just constitute the pair of differential transmission line that makes the characteristic impedance unanimity.At last, shown in Figure 45 E, on whole of dielectric piece 1220, form dielectric layer 1223 and conductive foil 1225, many differential transmission circuits are imbedded the interior differential signal transmission cable of dielectric (dielectric piece 1220 and dielectric layer 1222,1223) thereby finish.
The differential signal transmission mode is though have very strong anti-external characteristics of interference.But in order to make its transmission differential signal more at high speed, just need take to make the measure of the characteristic impedance unanimity in the 2 core holding wires of differential signal transmission cable, perhaps take to reduce the measure of time lag (propagation delay time is poor).
In differential signal transmission cable shown in Figure 43 1200, become a pair of inner conductor 1201 of doublet cord, with the twisted wire formation of many conductor bundles.But when this conductor bundle of strand, between two bundle conductors, often produce the deviation of tension force.Therefore, the physical length that becomes 2 core holding wires of doublet cord just produces deviation, and it becomes the reason that adds large dead time.
In addition, as shown in figure 43, though becoming the insulating barrier 1202 of periphery of a pair of inner conductor 1201 of doublet cord, leaky line 1205 and covering join, but when surrounding doublet cord and leaky line 1205 with external conductor 1203, after making leaky line 1205 strongly and external conductor 1203 contacting, leaky line incision insulating barrier 1202 tends to make insulating barrier 1202 to burst and decreases.Therefore, between 2 core holding wires of differential signal transmission cable, just produce the deviation of capacity, it becomes the unbalance reason of characteristic impedance.
In order to address this is that, for example Japanese documentation (spy opens 2004-087198 number) is described, covering between a pair of doublet cord and leaky line 1205 of inner conductor 1201 with insulating barrier 1202, Jie is set at thing., owing to the distance of doublet cord and leaky line 1205 along with the shape that is situated between at thing becomes, can not become in the inside of transmission cable 1200 constant, thereby the unbalance new problem of characteristic impedance appears, be difficult to the high differential signal transmission cable of fabrication reliability.
Another side, in multicore differential signal transmission cable 1210 shown in Figure 44, pair of conductive wiring 1211,1212, by forming after the etching, so wiring width is easy to generate deviation, in addition, because mating the back with another root conducting wiring 1211, a conducting wiring 1212 forms, so be easy to generate the contraposition deviation.Its result, the deviation that these are made becomes the unbalance reason of characteristic impedance of differential signal transmission cable.In addition, though by improving machining accuracy, the deviation that can suppress to make, introduce high-precision process equipment after, must improve manufacturing cost, in addition, for the cable of long distance, the raising of machining accuracy also is limited.
In sum, in the differential signal transmission cable of prior art, problems such as the deviation of existence generation characteristic impedance, time lag.These problems are brought the misoperation that causes behind the signal Transmit Degrade, become the major reason of the high speed that hinders differential signal transmission.The multicore while cable that adopts the manufacture method shown in Figure 42 A-Figure 42 C to form in addition, though become the band line structure, but with the place of incision shown in Figure 42 C, become and comprise along the thin slice in-plane side by side behind the position of 2 holding wires of configuration, a pair of holding wire that can also form to constitute the differential signal transmission lines road is the multicore differential transmission cable of unit.
, in the multicore differential transmission cable that forms like this, because a pair of holding wire is by etching formation, so the interval of the width of holding wire and holding wire is easy to generate deviation.Because these values are parameters of characteristic impedance of decision differential signal transmission cable, so the deviation in the manufacturing of these values directly influences the deviation of the characteristic impedance of differential signal transmission cable.The deviation of characteristic impedance is brought the misoperation that causes behind the signal Transmit Degrade, becomes the major reason of the high speed that hinders differential signal transmission.
In addition, to go up the holding wire of formation as a pair of holding wire at different layers (i.e. the different layer of above-below direction as upper layer and lower floor thereof), when constituting the differential signal transmission lines road, be difficult to make the contraposition correctly of a pair of holding wire, be easy to generate offset at different interlayers.
After producing above-mentioned offset, directly influence the deviation of the characteristic impedance of differential signal transmission cable.Its result, the deviation of characteristic impedance is brought the misoperation that causes behind the signal Transmit Degrade, becomes the major reason of the high speed that hinders differential signal transmission.
Summary of the invention
Main purpose of the present invention is to provide the deviation of characteristic impedance or time lag to produce differential signal transmission cable less, that reliability is high.
In order to solve above-mentioned problem, signal-transmitting cable of the present invention, have: the dielectric sandwich layer that extends along the length direction of cable, the 1st stacked conductive layer on a face of described dielectric sandwich layer, stacked the 2nd conductive layer on another face of described dielectric sandwich layer, cover the insulator of described dielectric sandwich layer and described the 1st, the 2nd conductive layer, cover the conductive shield of described insulator, and then cover the insulating properties crust of described conductive shield.Described dielectric sandwich layer and described the 1st, the 2nd conductive layer have identical width mutually.Described the 1st, the 2nd conductive layer has identical thickness mutually.
After adopting said structure, by 3 layers of transmission core cables that constitutes such as the 1st conductive layer, dielectric sandwich layer and described the 2nd conductive layers, owing to can make the value unanimity of each parameter (thickness of each layer, width, at interval) of the characteristic impedance of this transmission core cable of decision, so can realize not having the signal-transmitting cable characteristic impedance deviation, that reliability is high.
Described the 1st conductive layer and described the 2nd conductive layer preferably constitute the pair of differential holding wire.
In addition, on described the 1st conductive layer in stacked the 1st dielectric layer, the stacked the 1st earthy conductive layer on the 1st dielectric layer also; On described the 2nd conductive layer during stacked the 2nd dielectric layer in, the stacked the 2nd earthy conductive layer on the 2nd dielectric layer also; Described the 1st dielectric layer, the described the 1st earthy conductive layer, described the 2nd dielectric layer and the described the 2nd earthy conductive layer have identical width with described dielectric sandwich layer, described the 1st conductive layer and described the 2nd conductive layer; Described the 1st dielectric layer and described the 2nd dielectric layer preferably have identical thickness mutually.
And then, described dielectric sandwich layer, it is thin that its thickness cans be compared to the described the 1st and the 2nd dielectric layer thickness most.
In addition, have a plurality of described transmission core cables, these a plurality of transmission core cables are preferably contained by described insulator.
In addition, at the another side of described dielectric piece, earthy conducting film is set preferably.
In addition, described dielectric sandwich layer preferably is made of some in polyimides, fully aromatic polyamide, PETG, poly-hexichol sulfide, the liquid crystal polymer.
In addition, the color or the shape on the surface of described the 1st conductive layer and described the 2nd conductive layer are preferably different.
In addition, the end portion thickness of the cable length direction of described transmission core cable, the thickness of cable area that cans be compared to most other is thick.
The manufacture method of signal-transmitting cable of the present invention comprises: prepare to have the sheet length that is equal to or greater than cable length and be equal to or greater than the operation of dielectric core thin slice of sheet width of the several times of cable widths; On the two sides of described dielectric core thin slice, distinguish stacked electric conductor sheet, cover the operation on described two sides; Cut apart (cut-out) described dielectric core thin slice with cable widths, form the operation of a plurality of transmission core cables simultaneously; Each the operation that contains described a plurality of transmission core cables with insulator.
In addition, preferably also comprise and cut apart described dielectric core thin slice, form a plurality of transmission core cables after, the operation of removing the residue of described dielectric core thin slice residual on the divisional plane of described transmission core cable.
Other the manufacture method of signal-transmitting cable of the present invention comprises: the operation of dielectric core thin slice of preparing the sheet width of the several times that have the sheet length that is equal to or greater than cable length and be equal to or greater than cable widths; On the two sides of described dielectric core thin slice, distinguish stacked electric conductor sheet, cover the operation on described two sides; On described electric conductor sheet, distinguish the layered dielectric sheet, cover the operation of this electric conductor sheet;
On described electric conductor sheet, distinguish stacked earthy electric conductor sheet, cover the operation of this dielectric piece; Cut apart described dielectric core thin slice with cable widths, form the operation of a plurality of transmission core cables simultaneously; Each the operation that contains described a plurality of transmission core cables with insulator.
After adopting the signal-transmitting cable and manufacture method thereof of the invention described above, owing to can make decision consistent, so can realize not having the signal-transmitting cable characteristic impedance deviation, that reliability is high by the value of each parameter of the characteristic impedance of 3 layers of transmission core cable that constitutes such as the 1st conductive layer, dielectric sandwich layer and the 2nd conductive layer (thickness of each layer, width, at interval).In addition, transmission core cable is because after forming 3 layers of the 1st conductive layer, dielectric sandwich layer and the 2nd conductive layers etc., form a plurality of transmission core cables simultaneously by unified the cut-out, so the transmission core cable of can product percent of pass high manufacturing characteristic unanimity.Color or shape by making described the 1st conductive layer and the surface of described the 2nd conductive layer are different, thereby can be in the two ends of transmission cable of the present invention, and in the 1st or the 2nd conductive layer which differentiated each terminal at an easy rate and be.Like this, the present invention can provide reliability high signal-transmitting cable.In addition, even change the color or the shape on the surface of the 1st and the 2nd dielectric layer, also can obtain same effect.
The manufacture method of multicore differential transmission cable of the present invention, comprise: according to the stacked length dimension that has the size that is equal to or greater than the cable length direction respectively of following order be equal to or greater than the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet of width dimensions of several times of the size of cable widths direction, form the operation of duplexer sheet; Make the 2nd dielectric piece mediate, stack gradually a plurality of described duplexer sheets, form the operation of long size sheet; This length size sheet is rolled into the operation of cylinder shape; Pull out the end of thin slice from the described long size sheet that is rolled into the cylinder shape on one side, Yi Bian the operation of cutting apart.
After adopting said structure, cut apart the duplexer sheet that constitutes by the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet by unified, the live width width of the 2nd electric conductor sheet (the cut the 1st and) of a pair of holding wire that constitutes the differential transmission circuit and the interval (thickness of the 1st dielectric piece) between the holding wire are as one man formed.Therefore, can reduce the deviation of the characteristic impedance of differential transmission circuit.In addition, because unified cut apart stacked to constitute the long size sheet of the duplexer sheet of differential transmission circuit, so can also reduce the deviation at the interval of the width of the holding wire between stacked a plurality of differential transmission circuits and holding wire.Therefore, can realize the multicore differential transmission cable of characteristic impedance unanimity.
In addition, as the preceding operation of cutting apart described long size sheet, comprise the operation that this length size sheet is rolled into the cylinder shape; Cut apart the preceding operation of described long size sheet, preferably pull out the end of thin slice from the described long size sheet that is rolled into the cylinder shape on one side, Yi Bian cut apart.
Multicore differential transmission cable of the present invention has according to the stacked duplexer sheet that has the length dimension of the size that equals the cable length direction respectively and equal to form behind the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet of the width dimensions of cable widths direction size of following order.Described the 1st electric conductor sheet and the 2nd electric conductor sheet, its thickness is identical.Described duplexer sheet, according to following order, the surface of at least one side in described the 1st, the 2nd electric conductor sheet, stacked the 3rd dielectric piece and the 3rd electric conductor sheet.Make the 2nd dielectric piece mediate, stack gradually a plurality of described duplexer sheets.Described the 1st electric conductor sheet and the 2nd electric conductor sheet constitute the pair of differential transmission line that clips described the 1st dielectric piece configuration.Described the 3rd electric conductor sheet constitutes earth connection.
In addition, has connector at cable end; Described connector preferably has the thickness heavy section thicker than other thin slice position of described the 2nd dielectric piece.At this moment, preferably eliminate the part of described the 2nd dielectric piece in the described heavy section after, expose described the 1st, the 2nd electric conductor sheet.
Behind the multicore differential transmission cable and manufacture method thereof that employing the present invention relates to, cut apart the duplexer sheet that constitutes by the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet by unified, thereby the live width width of the 2nd electric conductor sheet (the cut the 1st and) of a pair of holding wire that constitutes the differential transmission circuit and the interval (thickness of the 1st dielectric piece) between the holding wire are as one man formed.Therefore, can reduce the deviation of the characteristic impedance of differential transmission circuit.In addition, because unified cut apart stacked to constitute the long size sheet of the duplexer sheet of differential transmission circuit, so can also reduce the deviation at the interval of the width of the holding wire between stacked a plurality of differential transmission circuits and holding wire.Therefore, can realize the multicore differential transmission cable of characteristic impedance unanimity.
And then, cut apart the long size sheet of duplexer sheet stacked by unified, thereby can make a plurality of multicore differential transmission cables simultaneously, so can realize cheap multicore differential transmission cable.
The manufacture method of flexible differential transmission cable of the present invention comprises: on flexible dielectric piece, form the operation of the 1st conducting film; On described the 1st conducting film, form the operation of dielectric film; On described dielectric film, form the operation of the 2nd conducting film; After cutting off described the 2nd conducting film, described dielectric film and described the 1st conducting film, on described dielectric piece, form in the slot part of a plurality of band shapes side by side, between the described slot part of adjacency, form by by this slot part from the operation of the differential transmission circuit that constitutes of the duplexer of described the 2nd conducting film, described dielectric film and described the 1st conducting film; After forming described differential transmission circuit, insulant is imbedded the operation of described slot part.On identical mutually width, form described slot part, constitute described differential transmission circuit by described duplexer with identical mutually width.
In addition, preferably also comprise the operation that covers described slot part and the described differential transmission circuit of imbedding described insulant with insulating barrier.
In addition, in the manufacture method of flexible differential transmission cable of the present invention, preferably also be included in the operation that forms ground plane on the described insulating barrier.
In addition, in the manufacture method of flexible differential transmission cable of the present invention, the back side that preferably also is included in described dielectric piece forms the operation of ground plane.
In addition, in the manufacture method of flexible differential transmission cable of the present invention, be preferably in be cut to described the 2nd conducting film, described dielectric film and described the 1st conducting film thickness direction midway, make described the 1st conducting film stay a part, after forming banded slot part, by etch processes, thus the remnants of defeated troops of removing described the 1st conducting film, and enforcement forms the operation of described slot part.
The manufacture method of flexible differential transmission cable of the present invention, by under the state of residual dielectric piece, after being breaking at the 1st conducting film, dielectric film and the 2nd conducting film that forms on the amboceptor electricity sheet, form banded slot part, thereby can be under the state that becomes one with dielectric piece, form a plurality of differential transmission circuits that constitute by by the duplexer of this slot part the 1st conducting film disconnected from each other, dielectric film and the 2nd conducting film simultaneously, can realize the flexible differential transmission cable that production efficiency is high.
In addition, the 1st conducting film, dielectric film and the 2nd conducting film, after being simultaneously severed on the stacked basis, because can determine the width of the differential transmission circuit that the duplexer by the 1st conducting film, dielectric film and the 2nd conducting film constitutes, so that constitute the live width width of the 2nd conducting film (the cut the 1st and), the interval (promptly in other words the distance between the 1st and the 2nd conducting film is the thickness of dielectric film) between the holding wire and the position (contraposition of the 1st and the 2nd conducting film) of holding wire of a pair of holding wire of differential transmission circuit and as one man form.Like this, just can reduce the deviation of the characteristic impedance of differential transmission circuit, can realize the flexible differential transmission cable that reliability is high.
And then, by forming the duplexer that constitutes the differential transmission circuit, can realize the multicore differential transmission cable of characteristic impedance unanimity with identical width and identical distance, can realize the flexible differential transmission cable corresponding with the high capacity of data.
So, behind employing the present invention, the manufacture method of the flexible differential transmission cable that can provide the deviation of characteristic impedance little, production efficiency is high.
The manufacture method of signal-transmitting cable of the present invention, comprise: after alternately laminated configuration electric conductor sheet and sheet insulators, make in the duplexer sheet, also in a sheet plane of the thin slice end of described duplexer sheet, with the thin slice end of described duplexer sheet and the thin slice end of described sheet insulators, the thin slice that is positioned at another sheet plane one side forms the 1st operation of cascaded surface the closer to the stepped configuration in ground of described thin slice end one side on a described sheet plane of this thin slice end; The 2nd operation that another sheet plane of the described thin slice end of resin component and described laminated body sheet is joined; Along the sheet thickness direction, push described resin component, make the distortion of described thin slice end, thereby make a described cascaded surface and a described sheet plane become same, by becoming the 3rd operation that described electric conductor sheet that same described cascaded surface exposes constitutes electrode terminal respectively with a described sheet plane.
In addition, as described resin component, use is positioned at the another side of this resin component of the opposite side that described resin component and described another sheet plane join when this resin component and described another sheet plane are joined, have the material with the shape of described cascaded surface almost parallel; In described the 3rd operation, preferably make the distortion of described thin slice end, so that make the another side of described resin component and described another sheet plane of described duplexer sheet become same.
In addition, constitute described resin component by semi-harden shape resin, after described the 3rd operation, preferably also comprise make the sclerosis of this resin component after, with this resin component and the incorporate operation of described duplexer sheet.
In addition, as described resin component, preferably use material with the size of comprehensively joining with described duplexer sheet.
In addition, in described the 3rd operation, be preferably under the state of a described sheet plane of the described thin slice end that makes dull and stereotyped and described duplexer sheet,, push described resin component along the sheet thickness direction.
The manufacture method of signal-transmitting cable of the present invention, can form have the high density signal line in, also by exposing the electrode terminal that the holding wire that takes out each electric conductor sheet is set on the face at it, be connected thereby can be at an easy rate carry out terminal with other circuit substrate etc.
And then, because the surface that the terminal board of each holding wire can be listed in the duplexer sheet is in same, thus the terminal that other circuit substrate etc. carries out connect and in, can use the connector of prior art, can reduce cost.
After adopting this aspect, can provide the signal-transmitting cable that can connect a plurality of circuit substrates etc. to high-density.
Other purpose of the present invention will be understood after understanding the execution mode of hereinafter telling about, and be elaborated in " claims " of apposition.And, do not chat in this manual and many interests, after implementing the present invention, it may occur to persons skilled in the art that.
Description of drawings
Fig. 1 is the figure of structure of the signal-transmitting cable of expression the 1st execution mode of the present invention.
Fig. 2 A-Fig. 2 D is the figure of manufacture method of the signal-transmitting cable of expression the 1st execution mode.
Fig. 3 is the figure of structure of other signal-transmitting cable of expression the 1st execution mode.
Fig. 4 is the figure of structure of another other signal-transmitting cable of expression the 1st execution mode.
Fig. 5 is the figure of structure of other signal-transmitting cable of expression the 2nd execution mode of the present invention.
Fig. 6 A-Fig. 6 D is the figure of manufacture method of the signal-transmitting cable of expression the 2nd execution mode.
Fig. 7 is the figure of structure of the signal-transmitting cable of expression the 3rd execution mode of the present invention.
Fig. 8 is the figure of structure of other signal-transmitting cable of expression the 3rd execution mode.
Fig. 9 A-Fig. 9 E is the figure of manufacture method of the signal-transmitting cable of expression the 4th execution mode of the present invention.
Figure 10 A, Figure 10 B are the figures of manufacture method of other signal-transmitting cable of expression the 4th execution mode.
Figure 11 is the figure of structure of the transmission core cable of expression the 5th execution mode of the present invention.
Figure 12 is the figure of structure of connector of the signal-transmitting cable of expression the 5th execution mode.
The 1st example of the shape of Figure 13 the 1st, the 2nd conductive layer.
The 2nd example of the shape of Figure 14 A, Figure 14 B the 1st, the 2nd conductive layer.
Figure 15 A, Figure 15 B are the figures of manufacture method of the multicore differential transmission cable of expression the 6th execution mode of the present invention.
Figure 16 is the figure of cutting-off method of the long size sheet of expression the 6th execution mode of the present invention.
Figure 17 A is the profile of the multicore differential transmission cable of the 6th execution mode.
Figure 17 B is the part enlarged drawing of the multicore differential transmission cable of the 6th execution mode.
Figure 18 A, Figure 18 B are the figures of shielding construction of the signal-transmitting cable of expression the 6th execution mode.
Figure 19 is the figure that the cylinder shape of expression the 6th execution mode is grown the cutting-off method of size sheet.
Figure 20 is the figure that the cylinder shape of expression the 6th execution mode is grown other cutting-off method of size sheet.
Figure 21 is the profile of structure of other long size sheet of the 6th execution mode.
Figure 22 is the profile of structure of another other long size sheet of the 6th execution mode.
Figure 23 A, Figure 23 B are the figures of formation method of connector of the multicore differential transmission cable of expression the 6th execution mode.
Figure 24 A, Figure 24 B are the enlarged drawings of connector construction of the multicore differential transmission cable of expression the 6th execution mode.
Figure 25 A-Figure 25 D is the process profile perpendicular to the direction of cable length direction of the manufacture method of the flexible differential transmission cable of expression in the 7th execution mode of the present invention.
Figure 26 is the figure of cutting-off method of the slot part of expression the 7th execution mode.
Figure 27 is the profile of structure of flexible differential transmission cable of the conductively-closed of expression the 7th execution mode.
Figure 28 A-Figure 28 D is other the process profile of manufacture method of flexible differential transmission cable of expression the 7th execution mode.
Figure 29 is illustrated in the manufacture method that adopts Figure 28 A-Figure 28 D and the profile of structure that makes the flexible differential transmission cable of its planarization after forming again.
Figure 30 is the vertical view of structure of the reference example of the flexible signal-transmitting cable 700 of expression.
Figure 31 A is the stereogram of structure of the signal-transmitting cable that formed of electrode terminal of expression the 8th execution mode of the present invention steppedly.
Figure 31 B is the profile of Figure 31 A.
Figure 32 A, Figure 32 B are the profile of expression with the method for stair-stepping electrode terminal planarization.
Figure 33 A-Figure 33 C is the process profile of manufacture method of the signal-transmitting cable of expression the 8th execution mode.
Figure 34 is the vertical view of the signal-transmitting cable of expression the 8th execution mode.
Figure 35 is the vertical view of other signal-transmitting cable of expression the 8th execution mode.
Figure 36 A, Figure 36 B are the process profiles of manufacture method of other signal-transmitting cable of expression the 8th execution mode.
Figure 37 A, Figure 37 B are the configuration profiles of electrode terminal of the signal-transmitting cable of expression the 8th execution mode.
The figure of the structure when Figure 38 represents that the signal-transmitting cable with the 8th execution mode is used for connection between the circuit substrate.
Figure 39 represents the figure of manufacture method of the signal-transmitting cable of the 8th execution mode.
Figure 40 represents the figure of topology example of the soft multicore cable of prior art.
Figure 41 A, Figure 41 B represent the figure of topology example of the multicore coaxial cable of prior art.
Figure 42 A-Figure 42 D represents the figure of manufacture method of the multicore coaxial cable of prior art.
Figure 43 is the figure of structure of the signal-transmitting cable of expression prior art.
Figure 44 is the figure of structure of the multicore signal-transmitting cable of expression prior art.
Figure 45 A-Figure 45 E is the figure of manufacture method of the multicore signal-transmitting cable of expression prior art.
Embodiment
Below, with reference to accompanying drawing, tell about embodiments of the present invention.In following accompanying drawing, for the purpose of simplifying the description, with identical reference marks, expression has the inscape of identical function in fact.In addition, the present invention is not limited to following execution mode.
(the 1st execution mode)
Fig. 1 is the generalized section of structure of the signal-transmitting cable 100 of expression the 1st execution mode of the present invention.Fig. 2 is the process profile of manufacture method of the signal-transmitting cable 100 of expression the 1st execution mode.
Signal-transmitting cable 100 as shown in Figure 1, has: the dielectric sandwich layer 10 that extends along the length direction (with the direction of drawing quadrature) of cable; Constitute the transmission core cable 20 of one by the 1st stacked on the two sides of this dielectric sandwich layer 10 conductive layer 11 and the 2nd conductive layer 12; And the insulator 13 that contains this transmission core cable 20.
The 1st conductive layer 11 and the 2nd conductive layer 12 have identical thickness respectively; Dielectric sandwich layer the 10, the 1st conductive layer 11 and the 2nd conductive layer 12 have identical width respectively.And, contain the insulator 13 that transmits core cable 20, used the screen 14 that constitutes by electric conductor to cover; Screen 14 is used the crust 15 that is made of insulator to cover.By the 1st conductive layer 11 and the 2nd conductive layer 12, constitute the pair of differential holding wire.
The characteristic impedance of pair of differential holding wire, depend on the width of the 1st and the 2nd conductive layer 11,12 and the 1st and the 2nd conductive layer 11,12 between distance.Therefore, determine the size of the 1st and the 2nd conductive layer 11,12, so as to obtain fixed characteristic impedance.For example: constitute the 1st and the 2nd conductive layer 11,12 if make by copper, its width is 150 μ m, and the distance between the 1st and the 2nd conductive layer 11,12 is 190 μ m, and the dielectric constant of dielectric sandwich layer 10 is 0.4, just can obtain the characteristic impedance of about 100 Ω.
Below, with reference to Fig. 2, tell about the manufacture method of the signal-transmitting cable 100 of the 1st execution mode.At first, shown in Fig. 2 A, prepare dielectric sandwich layer 10 '.As dielectric sandwich layer 10 ', prepare to form the material of the bonding agent of about 45 μ m here, on the two sides of the thick polyimide piece of about 100 μ m.Here, make dielectric core thin slice 10 ' become with among Fig. 2 A with the direction of drawing quadrature as length direction, with the left and right directions of drawing rectangular flat shape as Width.And then the sheet length that the size that makes dielectric core thin slice 10 ' become its length direction equates with the cable length of transmission core cable 20, the size of its Width are equal to or greater than the shape of the several times of the cable widths of transmitting core cable 20.
Then, shown in Fig. 2 B, on separately whole of the two sides of dielectric core thin slice 10 ', the stacked the 1st and even the 2nd electric conductor sheet 11 ', 12 '.Prepare the 1st and even the 2nd electric conductor sheet 11 ', 12 ' that the rolled copper foil by the thickness of about 8 μ m constitutes here.By these the 1st and even the 2nd electric conductor sheets 11 ', 12 ' of crimping, thus stacked on the two sides of dielectric core thin slice 10 ' respectively.At this moment, only painted with dyestuff in the surface of the 1st electric conductor sheet 11 '.Perhaps the Surface Machining with the 1st electric conductor sheet 11 ' becomes matsurface.Like this, make the surface state of the 1st electric conductor sheet 11 ', the surface state with the 2nd electric conductor sheet 12 ' is different at a glance.
Then, shown in Fig. 2 C, along the sheet length direction, (for example 150 μ m) are breaking at the dielectric core thin slice 10 ' that the two sides is formed with electric conductor sheet 11 ', 12 ' according to cable widths.In order to carry out this cut-out,, set the several times that are equal to or greater than above-mentioned cable widths for the width of dielectric core thin slice 10 '.
Like this, when having identical mutually width dimensions (for example 150 μ m), also form the continuous a plurality of transmission core cables 20 of its length direction.The transmission core cable 20 that forms becomes the material of the 3-tier architecture with the 1st conductive layer 11, dielectric sandwich layer 10 and the 2nd conductive layer 12.
In addition, though use slicing machine to cut apart, owing to the Copper Foil that uses as the 1st and the 2nd conductive layer 11,12 is very flexible, so might on the divisional plane of transmission core cable 20, stay the residue of Copper Foil.Because dielectric core thin slice 10 ' is extremely thin, so the residue of Copper Foil just becomes the major reason that makes the short circuit of pair of differential holding wire.Therefore, after cutting apart, the operation of removing residue is set, this is preventing that product percent of pass from being preferred measure on descending.For example, if flood etching, just can under the prerequisite that does not influence the Copper Foil shape after cutting apart, remove above-mentioned residue with the solution of etch copper.In addition, adopt cutting apart of slicing machine, use laser cutting, just can suppress the generation of above-mentioned residue if replace.
At last, shown in Fig. 2 D, with the insulator 13 of thick about 500 μ m cover cut apart the full week of the transmission core cable 20 that cuts out after, the screen 14 with thick about 50 μ m covers insulators 13 again, and then, with crust 15 covering screens 14.Like this, just finished the manufacturing of transmission core cable 20.
Here, as insulator 13, for example use FEP fluorine-type resin, amorphous polyene resin, PEN (polyphenyl dioctyl phthalate two alcohol esters) etc. such as (tetrafluoroethylene one hexafluoro propylene co-polymerization resins), in order to reduce dielectric constant, adopting the foaming shape that comprises blowing agent is that it is preferred especially.As screen 14, can use the metal tape or the metal forming of excellent electric conductivity such as copper, aluminium, perhaps with plastic film with metal layered film of their layerings etc.In addition, as crust 15, can use polyvinyl chloride, polyolefin etc.
The signal-transmitting cable 100 that adopts this manufacture method to form does not carry out special width adjustment and handles, and just can make the width of the 1st conductive layer 11 that constitutes differential signal line and the width of the 2nd conductive layer 12 become structure consistent with each other.In addition,, handle, just can make the interval of two conductive layers 11,12 on total length, become structure consistent with each other so do not carry out special width adjustment because between the 1st, the 2nd conductive layer 11,12, insertion has certain thickness dielectric sandwich layer 10.
For the above-mentioned reasons, can be along the length direction of cable, the characteristic impedance of signal-transmitting cable 100 is kept becoming certain value accurately.The balance of characteristic impedance that like this, can inhibit signal transmission cable 100.
In addition, owing to be that single dielectric core thin slice 10 ' that the two ends with length direction are trimmed is cut apart the back and formed signal-transmitting cable 100, so the cable physics of the signal-transmitting cable 100 that cuts out from identical dielectric core thin slice 10 ' is long, just consistent with each other, between these cables, can also suppress the generation of time lag (propagation delay time is poor).
And then, from identical dielectric core thin slice 10 ', form many signal-transmitting cables 100 simultaneously, also the deviation of separately impedance operator can be suppressed to very little degree, so in batch process, also can product percent of pass make signal-transmitting cable in the highland very much.
In addition, in above telling about, example illustrates the concrete material of each inscape of signal-transmitting cable.But be not confined to this especially.For example: dielectric sandwich layer 10, can also use fully aromatic polyamide, PETG, poly-hexichol sulfide, liquid crystal polymer etc.In addition, the 1st and the 2nd conductive layer 11,12 can also be alloy, other metal of cupric.
Signal-transmitting cable 100 shown in Figure 1 illustrates basic structure of the present invention.But when reality is used, effectively from exterior shield transmission core cable 200 minutes.Fig. 3 illustrates the topology example of the signal-transmitting cable 110 with shield effectiveness.
In Fig. 3, transmission core cable 20 is identical with the structure of Fig. 1.But the whole periphery that will transmit core cable 20 with insulating barrier 30 covers.And then, configuration leaky line 31 between insulating barrier 30 and screen 14.Leaky line 31 is configured to the length identical with signal-transmitting cable 100.Like this, in the cable outside with leaky line 31 with after earthing potential is connected, just can pass through leaky line 31, screen 14 is connected with earthing potential.In addition, in order to improve the electrical connectivity between leaky line 31 and the screen 14, leaky line 31 is pressed into the gap that is configured between insulating barrier 30 and the screen 14.
, the crimp force with the degree of not damaging the dielectric sandwich layer 10 between the 1st and the 2nd conductive layer 11,12 is pressed into leaky line 31 in the gap that is configured between insulating barrier 30 and the screen 14.Therefore, leaky line 31 is set, can produce the problem that dielectric sandwich layer 10 is out of shape, characteristic impedance is unbalance.
And the deviation of the characteristic impedance of signal-transmitting cable 100 in signal-transmitting cable one by one is also very little, so also be suitable for the multicore signal-transmitting cable that uses when a plurality of signals of parallel transmission.
Fig. 4 illustrates the topology example of the multicore signal-transmitting cable 120 that forms of the many transmission core cables 20 of set.In Fig. 4, the state of many transmission core cables 20 to dispose side by side mutually is insulated layer 13 and covers.And then the side face of insulating barrier 13 is used screen 14 and crust 15 to cover.In addition, Fig. 4 illustrates the examples of 2 of configurations arranged side by side transmission core cable 20, but can be according to the quantity of the signal of parallel transmission, the quantity of the transmission core cable 20 that increase and decrease is arranged.In addition, transmission core cable 20 not only can dispose (arranging towards the cable widths direction mutually) side by side, can also dispose the state of (arranging towards the cable thickness direction mutually) with file, is insulated layer 13 and covers.
(the 2nd execution mode)
Though differential signal line has the characteristics of very strong anti-extraneous noise, can not eliminate extraneous noise fully.For transmission differential signal more stably, preferably adopt the structure that covers transmission core cables 20 with screen 14., as shown in Figure 3,, need dispose leaky line 31 separately,, screen 14 is connected with earthing potential by leaky line 31 for earthing potential being given screen 14.Adopt this structure, need append formation, thereby manufacturing process's complexity, manufacturing cost are risen.
Fig. 5 shows the structure of the signal-transmitting cable 130 that the 2nd execution mode of the present invention relates to.The not additional leaky line of the 2nd execution mode just can obtain the shield effectiveness of differential signal line.In other words, the 1st and the 2nd conductive layer 11,12 that constitutes the pair of differential holding wire is disposed relatively, between two conductive layers 11,12, insert dielectric sandwich layer 10.These structures are the same with transmission core cable 20 in the 1st execution mode basically.
On the 1st conductive layer 11, above stacked the 1st dielectric layer 16, the 1 conductive layers 11, covered by the 1st dielectric layer 16.And then, on the 1st dielectric layer 16, above the stacked the 1st earthy conductive layer 18, the 1 dielectric layers 16, covered by the 1st earthy conductive layer 18.Equally, on the 2nd conductive layer 12, above stacked the 2nd dielectric layer 17, the 2 conductive layers 12, covered by the 2nd dielectric layer 17.And then, on the 2nd dielectric layer 17, above the stacked the 2nd earthy conductive layer 19, the 2 dielectric layers 17, covered by the 2nd earthy conductive layer 19.
The the 1st and the 2nd dielectric layer 16,17 has mutually identical thickness, and in addition, the 1st and the 2nd dielectric layer 16,17 and the 1st and the 2nd earthy conductive layer 18,19 have respectively and dielectric sandwich layer the 10, the 1st and the identical width of the 2nd conductive layer 11,12.
Like this, in the 2nd execution mode, below from figure, have the shape that stacks gradually the 2nd earthy conductive layer the 19, the 2nd dielectric layer the 17, the 2nd conductive layer 12, dielectric sandwich layer the 10, the 1st conductive layer the 11, the 1st dielectric layer 16 and the 1st earthy conductive layer 18, thereby constitute transmission core cable 21.
The characteristic impedance of the pair of differential holding wire of structure shown in Figure 5 is subjected to the width of the 1st and the 2nd conductive layer 11,12 and the influence at the interval between the 1st and the 2nd conductive layer 11,12.In addition, above-mentioned characteristic impedance also is subjected to the influence at the interval between the 1st or the 2nd conductive layer 11,12 and the 1st and the 2nd earthy conductive layer 18,19.After adjusting them, can stipulate above-mentioned characteristic impedance.Therefore, in transmission core cable 21, set the size of above-mentioned each inscape, so that obtain required characteristic impedance.
For example, at this moment after being constituted dielectric sandwich layer 10, constituted the 1st and the 2nd conductive layer 11,12, constituted the 1st and the 2nd dielectric layer 16,17, constituted the 1st and the 2nd earthy conductive layer 18,19 by rolled copper foil by polyimide piece by rolled copper foil by polyimide piece, the width that makes the 1st and the 2nd conductive layer 11,12 is that the distance between 135 μ m, the 1st and the 2nd conductive layer 11,12 is that distance between 190 μ m, the 1st or the 2nd conductive layer 11,12 and the 1st or the 2nd earthy conductive layer 18,19 is 250 μ m.Like this, just obtain the characteristic impedance of about 100 Ω.
After adopting said structure, because pair of differential holding wire 11,12, its two sides is covered with ground plane 18,19, so can bring shield effectiveness more effectively for these differential signal lines.In addition, at this moment, owing to can be in the cable outside two ground planes 18,19 directly be connected with earthing potential, so leaky line needn't be set separately, thus make structure obtain its corresponding simplified.
In addition, dielectric sandwich layer 10, its thickness are than the thin thickness of the 1st and the 2nd dielectric layer 16,17, and like this, the combination of differential signal line is strengthened, and its signal quality also is improved.
Below, with reference to Fig. 6 A-Fig. 6 D, tell about the manufacture method of the signal-transmitting cable 130 of the 2nd execution mode.
At first, as shown in Figure 6A, prepare on the two sides of dielectric sandwich layer 10 ' the stacked the 1st and the 2nd electric conductor sheet 11 ', 12 ' material.As dielectric sandwich layer 10 ', prepare to form the material of the bonding agent of about 45 μ m here, on the two sides of the thick polyimide piece of about 100 μ m.Dielectric core thin slice 10 ' is become the direction of the drawing thickness among Fig. 6 A as length direction, with the left and right directions of the drawing rectangular flat shape as Width here.And then, dielectric core thin slice 10 ' is become its length direction as the size of the sheet length that equates with cable length, with the shape of its width dimensions as the several times of cable widths.
On separately whole of the two sides of dielectric core thin slice 10 ', the stacked the 1st and even the 2nd electric conductor sheet 11 ', 12 ', covering dielectric core thin slice 10 '., prepare the 1st and even the 2nd electric conductor sheet 11 ', 12 ' that the rolled copper foil by the thickness of about 8 μ m constitutes here, by these the 1st, the 2nd electric conductor sheets 11 ', 12 ' of crimping, thus stacked on the two sides of dielectric core thin slice 10 ' respectively.At this moment, only painted with dyestuff in the surface of the 1st electric conductor sheet 11 '.
Then, shown in Fig. 6 B, on whole on the 1st and the 2nd electric conductor sheet 11 ', 12 ', the stacked the 1st and the 2nd dielectric piece 16 ', 17 '.And then, on whole on the 1st and the 2nd dielectric piece 16 ', 17 ', the stacked the 1st and the 2nd ground strip 18 ', 19 '.The the 1st and the 2nd dielectric piece 16 ', 17 ' is made of the polyimide film of the thickness of about 170 μ m; The the 1st and the 2nd ground strip 18 ', 19 ' is made of the rolled copper foil of the thickness of about 8 μ m.
With stacked dielectric core thin slice 10 ', shown in Fig. 6 C,, cut apart according to cable widths along the sheet length direction.Form a plurality of transmission core cables 21 like this, simultaneously with identical cable widths.
The thickness of the transmission core cable 21 that forms becomes about 570 μ m.If this thickness just can adopt common slicing machine (not shown) to cut apart easily.In addition, as in manufacturing process shown in Figure 2, telling about, often on the divisional plane of transmission core cable 21, stay the residue of Copper Foil.Therefore, after cutting apart, it is preferred measure that the operation of removing residue is set.
At last, shown in Fig. 6 D, cut apart the transmission core cable 21 that cuts out, if necessary, after covering with crust 15 again, just finished the manufacturing of signal-transmitting cable 130 with insulator 13 containings.As insulator 13, use the PEN that comprises blowing agent; Crust 15 uses polyvinyl chloride.
(the 3rd execution mode)
Fig. 7 and Fig. 8 represent the structure of the signal-transmitting cable 140,150 that the 3rd execution mode of the present invention relates to.
Fig. 7 is the material that constitutes the so-called multi-core ribbon cable of a plurality of transmission core cables 20 of set, has 1 dielectric piece 40, on a face of this dielectric piece 40, roughly equally spaced dispose a plurality of transmission core cables 20 (structure of telling about with the 1st execution mode is identical) side by side.On another face of dielectric piece 40, the insulator 41 of stacked covering transmission core cable 20.In addition, transmit core cable 20 in order to dispose, dielectric piece 40 has lengthwise dimension and the arranged side by side width dimensions that dispose a plurality of transmission core cables 20 equal with the cable length size of transmission core cable 20.
Dielectric piece 40, use form the material of the bonding agent of about 75 μ m on the two sides of the polyimide piece of thick about 150 μ m, adopt hierarchical process, will by insulator 41 that the PEN that mix blowing agent constitute heat one side and dielectric piece 40 crimping on one side.
The transmission core cable 20 that the manufacturing process of telling about with reference Fig. 2 makes, the amplitude of the 1st and the 2nd conductive layer 11,12 that constitutes the pair of differential holding wire is as one man formed, in addition, the thickness of the dielectric sandwich layer 10 that inserts between the 1st and the 2nd conductive layer 11,12 is also certain, so the intrinsic characteristic impedance of differential signal line can keep certain value along transmission core cable 20.In addition, because the cable end of transmission core cable 20, also with unified cut-out of state of dielectric core thin slice 10 ', so the physics length of cable can as one man form, the generation of time lag also is suppressed.And then owing to form many transmission core cables 20 simultaneously by single dielectric core thin slice 10 ', the deviation of transmission core cable 20 characteristic impedance separately is also little.Therefore, with a plurality of transmission core cables 20 multicore signal-transmitting cables that dispose the present embodiment that forms arranged side by side of making like this, become the high product of reliability of characteristic impedance unanimity.Like this, structure of the present invention is applicable to the signal-transmitting cable that parallel transmission is at a high speed used.
Fig. 8 is that expression makes signal-transmitting cable shown in Figure 7 140 have the figure of structure of the signal-transmitting cable 150 of shield effectiveness.
As shown in Figure 8, signal-transmitting cable 150 has the construction of cable identical with signal-transmitting cable 140, and then, on whole of the two sides of this construction of cable (signal-transmitting cable 140) (lateral surface of the lateral surface of insulating trip 41 and dielectric piece 40 (another side)), form earthy conducting film 42,43 respectively.Again and then cover the lateral surface separately of earthy conducting film 42,43 with crust 44,45.
With after earthing potential is connected, these earthy conducting films 42,43 just play a role as screen with earthy conducting film 42,43.Here because earthy conducting film 42,43 maintains a certain distance, be configured in the transmission core cable 20 that is arranged in parallel about (both sides of cable thickness direction), so for transmission core cable 20, the shield effectiveness that can play stably.
In addition, in above-mentioned telling about, earthy conducting film 42,43 is set on the two sides of dielectric piece 40, thereby obtains enough shield effectivenesses.If but disposed earthy conducting film at the another side of the insulating trip 41 that does not have stacked transmission core cable 20 at least, just could obtain shield effectiveness.
(the 4th execution mode)
Below, with reference to Fig. 9 A-Fig. 9 E, Figure 10 A, Figure 10 B, tell about the manufacture method of the signal-transmitting cable that the 4th execution mode of the present invention relates to.
Fig. 9 A-Fig. 9 E is the process profile of the manufacture method of expression signal-transmitting cable 160.At first, shown in Fig. 9 A, prepare on the two sides of dielectric sandwich layer 10 ' the stacked the 1st and the 2nd electric conductor sheet 11 ', 12 ' material.
Then, shown in Fig. 9 B,,, cut apart dielectric sandwich layer 10 ' by certain width (cable widths) along the length direction (perpendicular to the direction of paper) of thin slice.Like this, when having identical cable widths, also form many transmission core cables 20 simultaneously with 3-tier architectures such as the 1st conductive layer 11, dielectric sandwich layer 10 and the 2nd conductive layers 12.The structure and the manufacture method thereof of transmission core cable 20, with the 1st execution mode tell about the same.
Follow, shown in Fig. 9 C, preparation has the 1st dielectric piece 50 of the thin slice size of a plurality of transmission core cables 20 that can put configuration arranged side by side again, and transmission core cable 20 skies are opened certain interval, is configured in side by side on the 1st dielectric piece 50.
Follow again, shown in Fig. 9 D, prepare to have and the 2nd dielectric pieces 51 of the 1st dielectric piece 50 equal sizes, the 2nd dielectric piece 51 is put on the upper side (the not face that joins with the 1st dielectric piece 50) of transmission core cable 20.Like this, just cover a plurality of transmission core cables 20 with the 2nd dielectric piece 51.And then, cut apart the 1st and the 2nd dielectric piece 50,51 from the direction (thickness direction of transmission core cable 20) of arrow.At this moment, cut apart along the cable length direction of transmission core cable 20, and, do not have the position of cable between the transmission core cable 20 as adjacency its split position.
At last, shown in Fig. 9 E, engage after making the mutual crimping in cut end of the 1st and the 2nd dielectric piece 50,51, thus two dielectric pieces 50,51 are integrated, and then utilize incorporate two dielectric pieces 50,51, cover and respectively transmit core cable 20.Thereby finish the signal-transmitting cable 160 that is covered by the 1st and the 2nd dielectric piece 50,51.
In addition, as dielectric piece.Preferably use the polyvinyl chloride, polyethylene of zygosity excellence after the crimping etc.
The manufacture method of the signal-transmitting cable in the 4th execution mode, owing to can form many signal-transmitting cables simultaneously by a series of simple operation, so can make the signal-transmitting cable of the little certain mass of the deviation of characteristic.In addition, because process number is few, so can make signal-transmitting cable cheaply.
Figure 10 A, Figure 10 B are the process profiles of the manufacture method of expression signal-transmitting cable 170.Figure 10 A is illustrated in the process profile shown in Fig. 9 A-Fig. 9 E, the state (Fig. 9 D) till transmission core cable 20 quilts cover with the 1st and the 2nd dielectric piece 50,51.It is characterized in that not cutting apart the 1st dielectric piece 50 and the 2nd dielectric piece 51 here.
Then, shown in Figure 10 A, cable length direction along transmission core cable 20, and in the position (between the transmission core cable 20 in adjacency) that does not dispose transmission core cable 20, direction (thickness direction of cable) along arrow, with 50,51 crimping of the 1st and the 2nd dielectric piece, its part is not engaged thereby do not separate the 1st and the 2nd dielectric piece 50,51 ground.
Figure 10 B is the state after the expression crimping, signal-transmitting cable 170 becomes the state of being enclosed incorporate each other dielectric piece 50,51 inside, and then, signal-transmitting cable 170 is under the effect of the junction of dielectric piece 50,51, to include the inside of dielectric piece 50,51 in along cable length direction state disconnected from each other, become the sample attitude that so-called curtain shape ground connects.
Like this, each transmits core cable 20 and is firmly fixed with dielectric piece, and respectively transmits core cable 20 and connected by curtain shape ground, so can be as flexible multicore signal-transmitting cable use.In addition, in Fig. 9, Figure 10,, just can obtain very high shield effectiveness if, ground plane is set in the outside of the 1st and the 2nd dielectric piece 50,51.
(the 5th execution mode)
The preferred structure of signal-transmitting cable 20 of the present invention is: in its cable end, have the connector construction that is suitable for the combination that is connected the other side.Below, with reference to Figure 11, Figure 12, tell about the signal-transmitting cable of the present invention that its cable-end portion has connector construction.In addition, Figure 11, Figure 12 will transmit profile after core cable 20 is cut open along the cable length direction, and be different with Fig. 1-Figure 10 that will transmit after core cable 20 is cut open along this cable widths direction.
As shown in figure 11, the dielectric sandwich layer 10a of transmission core cable 20 in the two ends of cable length direction, the thickness of 10b are thicker than the thickness of other regional dielectric sandwich layer 10.Below, the cable end that thickness is thick is called " connector construction 10a, 10b ".This structure, for example as the pre-treatment that forms the 1st and the 2nd conductive layer 11,12, on the two sides of dielectric sandwich layer 10, along the cable widths direction, selectively transmission core cable 20 the two ends of cable length direction append, behind the layered dielectric layer, can form at an easy rate.In addition, in Figure 11, omitted the diagram of the insulator 13 of transmission core cable 20.
Figure 12 illustrates connection the other side's the structure of connector 60 of the transmission core cable 20 of such formation.At the cable end of transmission core cable 20, remove the covering of insulator 13 grades after, just expose connector construction 10a, 10b.On the other hand, connector 60, its end becomes the wire clamp 61 of conductivity.
Therefore, the wire clamp 61 that is connected device 60 by connector construction 10a, the 10b that makes transmission core cable 20 is clamped, can be easily and will transmit core cable 20 effectively and be connected with connector 60.Here, the 1st and the 2nd conductive layer 11,12 be dyed different colors, or make the one partial shape different.
In the structure of signal-transmitting cable of the present invention, need to adopt the structure that clearly to distinguish the 1st and the 2nd conductive layer 11,12.Otherwise when the electric position of signal-transmitting cable and other is connected, just might with the conductive layer connection different with the conductive layer that should be connected, cause can not transmission signals phenomenon.
In the respective embodiments described above of the present invention, the 1st and the 2nd conductive layer 11,12 is dyed different colors, or make the one partial shape different, thereby form the structure that clearly to distinguish the 1st and the 2nd conductive layer 11,12.Use color differentiating, for example can implement in the following manner.
(structure of the 1st usefulness color differentiating)
On the surface of the 1st and the 2nd conductive layer 11,12, form concavo-convexly respectively, between conductive layer, make its concavo-convex shape (concavo-convex sample attitude) different again, thereby after making brightness and lightness produce difference, use color differentiating.For example: constitute the 1st and the 2nd conductive layer 11,12 o'clock by electrolytic copper foil, on the manufacture method of Copper Foil,, form light-emitting area (glassy surface) and dull surface (matsurface) at conductive layer surface.The color of light-emitting area and dull surface, different on the degree that can with the naked eye be distinguished.Specifically, light-emitting area becomes minute surface, and reverberation, dull surface then become dead color.Utilize this specific character, can with one in the 1st and the 2nd conductive layer 11,12 as light-emitting area, another is as dull surface, with the two sides color differentiating.
(structure of the 2nd usefulness color differentiating)
Constitute the 1st and the 2nd conductive layer 11,12 o'clock by rolled copper foil, can not implement above-mentioned color differentiating.Therefore, for example, the surface tear of a conductive layer perhaps can be become the roll of the Copper Foil of a conductive layer as stretching, select for use and can form concavo-convex roll on its surface.Like this, can make different shapes with another from the surface configuration of the conductive layer that visually will form.
(structure of the 3rd usefulness color differentiating)
Utilize pigment or dyestuff etc., coat distinctive color on the surface of the 1st and the 2nd conductive layer 11,12.
(structure of the 4th usefulness color differentiating)
Electroplating processes and vapor deposition treatment by electric conducting material, when dielectric sandwich layer 10 (dielectric core thin slice 10 ') is gone up formation the 1st, the 2nd conductive layer 11,12 (the 1st, the 2nd electric conductor sheet 11 ', 12 '), in the 1st, the 2nd conductive layer 11,12 (the 1st, the 2nd electric conductor sheet 11 ', 12 '), adopt mutually different formation method, make them from visually becoming mutually different shape.
(structure of the 5th usefulness color differentiating)
One surface in etching the 1st, the 2nd conductive layer 11,12 selectively, thus visually make this surface configuration become the shape different with another.
In addition, not only can use color differentiating, can also make the shape of the 1st, the 2nd conductive layer 11,12 different.For example can be as shown in figure 13, only in the corner of an end of the 1st, the 2nd conductive layer 11,12, form otch α selectively.In addition, can be as shown in figure 14, an end in the 1st, the 2nd conductive layer 11,12 only forms hole and recess selectively.In Figure 14 A, an end in the 1st, the 2nd conductive layer 11,12 forms circular hole and even recess β; In Figure 14 B, an end edge in the 1st, the 2nd conductive layer 11,12, the recess γ of formation wedge type.
Like this, with color differentiating ground the 1st, the 2nd conductive layer 11,12 is painted, or make the part of its shape different, thereby after becoming the structure that clearly to distinguish the 1st, the 2nd conductive layer 11,12, just be easy to differentiate its closure.
(the 6th execution mode)
Figure 15 A, Figure 15 B and Figure 16 are the process profiles of the manufacture method of the multicore signal-transmitting cable in expression the 6th execution mode of the present invention.
At first, shown in Figure 15 A, after preparing the many pieces of duplexer sheet A that stack gradually the 1st electric conductor sheet the 210, the 1st dielectric piece 211 and the 2nd electric conductor sheet 212, under the state that makes 213 external packings of the 2nd dielectric piece, stack gradually these duplexer sheets A, after each lamination connect, form the long size sheet 220 shown in Figure 15 B.The length dimension L of long size sheet 220 of formation and the length dimension of the multicore differential transmission cable that will make are equated, make its width dimensions W1, be equal to or greater than the width dimensions several times of the multicore differential transmission cable that will make.In order to form the long size sheet 220 of this size, and set the shape of the 1st, the 2nd electric conductor sheet 210,212 and the 1st, the 2nd dielectric piece 211,213.
Then, as shown in figure 16,,, cut apart the long size sheet 220 of duplexer sheet A stacked according to the cable widths W2 shown in the dotted line along its length direction (perpendicular to the direction of figure paper plane).Make the long size sheet 220 of formation.Figure 17 A, Figure 17 B will grow the figure that size sheet 220 is cut open along its Width.
Here, the 1st electric conductor sheet 210 and the 2nd electric conductor sheet 212 become the pair of differential transmission lines that clip the 1st dielectric piece 211 back formations, after unifying to cut apart long size sheet 220, can cut out many multicore differential transmission cables 221.
Figure 17 A is the figure that multicore differential transmission cable 221 is cut open that will cut out along its Width, and Figure 17 B is the main position amplification profile after the part of a differential transmission circuit of the formation in the multicore differential transmission cable 221 is amplified.In Figure 17 A, Figure 17 B, multicore differential transmission cable 221 extends to the direction perpendicular to drawing, below, in these figure, to be called " the cable short transverse of multicore differential transmission cable 221 ", in these figure along the thickness direction (left and right directions in the drawing) of the 1st, the 2nd electric conductor sheet 210,212, along the direction (non-length direction) of the in-plane of the 1st, the 2nd electric conductor sheet 210,212, become the cable widths direction W2 of multicore differential transmission cable 221.
The characteristic impedance of the pair of differential transmission line that constitutes with the 1st, the 2nd electric conductor sheet 210,212, and ratio h/W2 (h: constitute the interval between the pair of differential transmission line, W2: the width of differential transmission circuit) be directly proportional.Here, because h depends on the thickness of the 1st initial dielectric piece 211, W2 depends on the width of cutting apart of long size sheet 220, so, so the deviation of the characteristic impedance in the multicore differential transmission cable 221 is very little.
In addition, the 1st, the 2nd electric conductor sheet 210,212, the rolled copper foil of used thickness identical (for example 8 μ m).In addition, the fully aromatic polyamide film of the 1st dielectric piece 211 prepreg states of thickness (for example 30 μ m) that use is decided.In addition, owing to need carry out insulated separation between differential transmission circuit (the 1st and the 2nd electric conductor sheet 210,212), the 2nd dielectric piece 213 is the thickest like the 1st dielectric piece 211.
Figure 18 A, Figure 18 B represent to shield the structure of multicore differential transmission cable 221.Shown in Figure 18 A, cover the two sides 221a of the cable widths direction of multicore differential transmission cable 221 with conductor thin film 231.As conductor thin film 231, its top and bottom cover with insulation film 230,232, and its width dimensions is than the big some materials of cable height dimension of multicore differential transmission cable 221.Under the state that the two ends of the cable short transverse of film are inserted respectively equably from the end of multicore differential transmission cable 221, dispose the conductor thin film 231 of this shape at the two sides 221a of the cable widths direction of multicore differential transmission cable 221.
Then, shown in Figure 18 B, the end of the conductive film 231 stretched from the two ends of the short transverse of multicore differential transmission cable 221 respectively is engaged with each other, is electrically connected, thereby covers multicore differential transmission cable 221 fully with conductive film 231.Like this, just become the state of shielding multicore differential transmission cable 221.
, during the e-machine that connect to separate with transmission cable etc., need the transmission cable of the above length of 5-10m.At this moment, as shown in figure 19, be preferably in form long size sheet 220 after, will grow size sheet 220 in advance and be rolled into the cylinder shape.Like this, when cutting off long size sheet 220,, cut apart with slicing machine (not shown) etc. on one side, can form at an easy rate in limited space apart from multicore differential transmission cable 221 than length on one side can pull out the long size sheet 220 of cylinder shape.
In addition, cut apart, as shown in figure 20, keep cylinder state ground to cut apart long size sheet 220 while can also replace the long size sheet 220 of pulling out the cylinder shape.At this moment, because can be with the state of cutting apart, the long size sheet 220 of keeping, conveying drum shape, institute is so that production management.
Duplexer sheet A shown in Figure 16 is the material that only constitutes the pair of differential transmission line.But can be again after adding ground plane on the structure of duplexer sheet A, the additional mask effect.Figure 21 represents the structure of the long size sheet of stacked lamination sheets of having added this ground plane.
As shown in figure 21, duplexer sheet B, on the basis of stacked the 1st electric conductor sheet the 210, the 1st dielectric piece 211 and the 2nd electric conductor sheet 212, also stacked the 3rd dielectric piece 214 and the 3rd electric conductor sheet 215.The 3rd dielectric piece 214 and the 3rd electric conductor sheet 215 according to this order, are laminated to the surface of the 2nd electric conductor sheet 212.In addition, the 3rd dielectric piece 214 and the 3rd electric conductor sheet 215 both can be laminated to the surface of the 1st electric conductor sheet 210 according to this order, can also be laminated to sometimes on both of the 1st, the 2nd electric conductor sheet 210,212.
And then, make the 2nd dielectric piece 213 under the state between them, stack gradually a plurality of duplexer sheet B, thereby constitute long chi sheet 220 '.
Will long chi sheet 220 ' according to after fixed width cuts off, can obtain to have the multicore differential transmission cable 221 ' that covers the pair of differential transmission lines about it with the 3rd electric conductor sheet 215.In other words, as behind the ground plane, each differential transmission circuit of multicore differential transmission cable 221 ' just becomes at least up and down the structure of all conductively-closeds with the 3rd electric conductor sheet 215.
In addition, multicore differential transmission cable 221 has a plurality of differential transmission circuits, but the characteristic impedance of each differential transmission circuit can also independently be set.Figure 22 represents to have the multicore differential transmission cable 221 of the differential transmission circuit with different characteristic impedance values " structure.
Duplexer sheet A1 is made of the 1st electric conductor sheet the 210, the 1st dielectric piece 211 and the 2nd electric conductor sheet 212; Duplexer sheet A2 is made of the 1st electric conductor sheet 210 ', the 1st dielectric piece 211 ' and the 2nd electric conductor sheet 212 '.The characteristic impedance of differential transmission circuit, depend on h/W2 (h: the separation between the differential transmission circuit, W: the ratio width of differential transmission circuit), owing to unified cut off long size sheet 220 ", so W2 is certain.Therefore, after the value of change h, just can change the set point of characteristic impedance.H depends on initial the 1st dielectric piece 211,211 ' thickness.Therefore, the thickness of the thickness of the 1st dielectric piece 211 of individual settings duplexer sheet A1 and the 1st dielectric piece 211 ' of duplexer sheet A2, the just characteristic impedance value of the characteristic impedance value of individual settings duplexer sheet A1 and duplexer sheet A2 at an easy rate.
In the multicore differential transmission cable 221 of cutting apart long size sheet 220 back formations, need be at the cable two ends, the connector that setting is connected with e-machine or other cable.
Figure 23 A, Figure 23 B and Figure 24 A, Figure 24 B, expression has an example of multicore differential transmission cable 221 structures of this connector construction and an example of manufacture method thereof.
Figure 23 A is the vertical view of long size sheet 220 , and Figure 23 B is the profile (not shown duplexer sheet) of long size sheet 220 .In these figure, the left and right directions among the figure is the length direction of cable.
Along the length direction of long size sheet 220 , every fixed interval, set heavy section 240.Heavy section 240 is provided with on the overall with that spreads all over long size sheet.The formation of heavy section 240 is adopted the lengthwise dimension of required multicore differential transmission cable at interval.In Figure 23 A, Figure 23 B, the lengthwise dimension of long size sheet 220, lengthwise dimension doubly a lot of that adopt the multicore differential transmission cable, wall thickness 240, every the cable length direction form be provided with at interval a plurality of.But when the lengthwise dimension of long size sheet 220 is identical with the length dimension of multicore differential transmission cable, wall thickness 240 is set at the two ends of the length direction of growing size sheet 220 .
Wall thickness 240, for example in the formation position of wall thickness 240, along the sheet length direction, the thickness thickening back with the 2nd dielectric piece 213 ' forms selectively.In order selectively the thickness of the 2nd dielectric piece 213 ' to be thickeied, for example can another piece dielectric piece of the width of wall thickness 240 will be had, on laminated configuration to the 2 dielectric pieces 213 along the sheet length direction.
Specifically, shown in Figure 23 A, prepare to have the width dimensions that equals several multicore differential transmission cables aggregate-value Width size W1 and have the 1st dielectric piece 211 of lengthwise dimension L of the aggregate-value of the length dimension that equals several multicore differential transmission cables.Respectively on a face of the 1st dielectric piece 211, stacked the 1st electric conductor sheet 210, on another face, stacked the 2nd electric conductor sheet 212, and then, on the 2nd electric conductor sheet 212, stacked the 2nd dielectric piece 213.As the 2nd dielectric piece 213, as mentioned above, in the formation position of wall thickness,, use the thicker material of sheet thickness along the sheet length direction.Behind the duplexer sheet (the 1st dielectric piece the 211, the 1st electric conductor sheet the 210, the 2nd electric conductor sheet the 212, the 2nd dielectric piece 213) that stacked again multilayer forms like this, this laminates crimping is integrated, form long size sheet 220 .
Then, long size sheet 220 are cut apart according to the Width size of multicore differential transmission cable, cut apart according to the lengthwise dimension of multicore differential transmission cable again.At this moment, the segmentaion position of lengthwise dimension is configured in the wall portion 240.Like this, a plurality of multicore differential transmission cable 221 are just cut apart by long size sheet 220 .And then, in the end of multicore differential transmission cable 221 of cutting apart, become the divided heavy section 240 of configuration.
After Figure 24 A is illustrated in heavy section 240 punishment and cuts long size sheet 220 , near the profile that enlarges the end with multicore differential transmission cable 221 .Shown in Figure 24 A, the 2nd dielectric piece 213 ' in the end (position of heavy section 240) of multicore differential transmission cable 221 , thickness is thicker than the thickness of the 2nd dielectric piece 213 of other parts.And shown in Figure 24 B, in the end (position of heavy section 240) of multicore differential transmission cable 221 , only the end of removing the 2nd dielectric piece 213 ' selectively can make the 1st and the 2nd electric conductor sheet 210,212 expose.Like this, can form connector construction in the end of multicore differential transmission cable 221 .
In the above-described 6th embodiment, for example:, can use the fully aromatic polyamide film as the 1st dielectric piece 211; As the 2nd dielectric piece 213, can use polyimide film, but also can use PETG, materials such as poly-hexichol sulfide and liquid crystal polymer.
(the 7th execution mode)
Figure 25 A-Figure 25 D is the process profile of cable widths direction (perpendicular to length direction) of the manufacture method of the flexible differential transmission cable of expression in the 7th execution mode of the present invention.
Shown in Figure 25 A, on dielectric piece 310, form the 1st conducting film 311, then, shown in Figure 25 B, on the 1st conducting film 311, form dielectric film 312 for another example.And then, shown in Figure 25 C, on dielectric film 312, form the 2nd conducting film 313.Then, shown in Figure 25 D, cut off the 2nd conducting film 313, dielectric film 312 and the 1st conducting film 311, form banded slot part 314.Slot part 314 with state parallel to each other, forms a plurality of on dielectric piece 310 side by side.Like this, a plurality of differential transmission circuits 315 by being constituted by the duplexer of slot part 314 the 1st conducting film 311, dielectric film 312 and the 2nd conducting film 313 disconnected from each other just form with state parallel to each other.Here, the holding wire by the 1st conducting film 311 and the 2nd conducting film 313 constitute becomes the pair of differential holding wire.
After adopting the structure of the 7th execution mode, can be under the state that becomes one with dielectric piece 310, form a plurality of differential transmission circuits 315 that constitute by by the duplexer of slot part 314 the 1st conducting film 311, dielectric film 312 and the 2nd conducting film 313 disconnected from each other simultaneously.Therefore, can realize the flexible differential transmission cable that production efficiency is high.
In addition, constituting the live width (width of the cut the 1st and the 2nd conducting film 311,313) of a pair of holding wire of differential transmission circuit 315 and the interval between holding wire (becoming the interval between the 1st and the 2nd conductive layer of holding wire, in other words is the thickness of dielectric film 312) as one man forms.Therefore, the deviation of the characteristic impedance of differential transmission circuit can be reduced, the flexible differential transmission cable that reliability is high can be realized.
And then, if form the duplexer that constitutes differential transmission circuit 315, just can realize the multicore differential transmission cable of characteristic impedance unanimity with same width and same interval.Therefore, can realize being adapted to the flexible differential transmission cable of data high capacity.
Here, as dielectric piece 310 and dielectric film 312, so long as can when forming differential transmission cable, keep differential transmission cable flexible property material dielectric just, for example can use the fully aromatic polyamide film, polyimide film (thickness for example be 30-60 μ m) etc. (following equally) of prepreg state.In addition, the 1st and the 2nd conducting film 311,313, rolled copper foil that can used thickness identical (for example 4-18 μ m) etc.The fully aromatic polyamide film; As the 2nd dielectric piece 213, can use polyimide film, but also can use PETG, materials such as poly-hexichol sulfide and liquid crystal polymer.
Tell about with concrete example, as dielectric piece 310, prepare the thick polyimide piece of 30 μ m, adhesive-applying on this dielectric piece 310, thereon as the 1st conducting film 311, the rolled copper foil of stacked 5 μ m, again thereon as dielectric film 312, the prepreg of stacked fully aromatic polyamide film is more thereon as the 2nd conducting film 313, the rolled copper foil of stacked 5 μ m, becoming one after the heating and pressurizing, use slicing machine to form slot part 314, make required length after, just can produce flexible differential transmission cable 315.
The characteristic impedance of differential transmission circuit 315 is depended on (distance between the differential transmission circuit)/ratio of (width of differential transmission circuit), so as long as according to the width of differential transmission circuit 315, the thickness dielectric sheet 312 of setting gets final product.
In addition, the cut-out of the 1st conducting film 311, dielectric film 312 and the 2nd conducting film 313 for example can use cutters such as slicing machine and so on to carry out.In addition, when cutting off with cutters such as slicing machine and so on, in order to prevent that the 1st conducting film 311 or the 2nd conducting film 313 from producing short circuit mutually behind the residues, the 1st conducting film 311 is stayed stop partially cutting off, promptly be cut to the 1st conducting film 311 thickness direction midway till, the part of the 1st conducting film 311 be left behind,, remove the remnants of defeated troops of the 1st conducting film 311 again by etching.
As adopt slicing machine be intended to stay the cut-out that stops to cut off behind an one of the 1st conducting film 311 and adjust gimmick, for example as the blade of slicing machine, prepare to put the instrument of insulating material or high-resistance material in blade side.From the end face of the incorporate cable that will form slot part 314, extract a terminal out, Yi Bian measure the resistance value between this terminal and the blade, Yi Bian processing.
When the front end position of blade cut off the 1st conducting film 311, the resistance that measures was low, and when the front end position was in the 1st dielectric film 312, resistance value uprised.For cutting sheet is gone down, when adjusting resistance value, also adjust the height of the blade of slicing machine, thereby can in required thickness range, process.By setting the critical value of resistance value, can adjusting is to become the state that the 1st conducting film 311 is stayed a part, still is cut to dearly till the dielectric piece 310.
Compare when not staying the slot part 314 that the 1st conducting film 311 ground cut off with forming, make the 1st conducting film 311 stay a part, remove the method for the remnants of defeated troops of the 1st conducting film 311, have following advantage by etching.That is: if safety cut-off the 1st conducting film 311 owing to be subjected to the influence of machining accuracy, will cut off the part of dielectric piece 310 so.Owing to form the dielectric piece 310 of the 1st conducting film 311, extremely thin, when using flexible differential transmission cable, the place of incision of dielectric piece 310 a little less than, often be easy to generate disrumpent feelings.Therefore, the 1st conducting film 311 is stayed cut-out partially, the method for removing the 1st conducting film 311 then by etching aspect intensity, is optimal.This method is one of dielectric piece 310 preferred gimmick when relatively thin.
In said method, as etching solution, after can using etching conducting film etc., can dissolve and even decompose the part that to remove, when adopting dielectric film and the 2nd insulating barrier described later etc. (with reference to Figure 28 A-Figure 28 D), do not dissolve and even decompose the etching solution of these dielectric films and dielectric film etc., for example, when adopting above-mentioned dielectric film and conducting film etc., can use frerrous chloride etc.
In addition, cut off conscientiously in order to utilize slicing machine, can be as shown in figure 26, after cutting off the 1st conducting film 311, dielectric film 312 and the 2nd conducting film 313, cut off the part of dielectric piece 310 again, till the part of the thickness direction of the dielectric piece 310 of nipping, form slot part 314.Adjust gimmick as the cut-out that utilizes slicing machine, can use above-mentioned gimmick.
Like this, if do dielectric piece 310 enough thick, just can not damage the integraty of dielectric piece 310 and a plurality of duplexers.
Figure 27 is the flexible differential transmission cable of expression for adopting the method shown in Figure 25 A-Figure 25 D to form, and becomes the profile of structure of the flexible differential transmission cable of more practical structure.In addition, Figure 27 is the profile along the cable widths direction.
At first, 316 of insulants are imbedded the slot part 314 of a plurality of band shapes, do not have concavo-convex tabular surface thereby the surface of flexible differential transmission cable is become.In addition, this state does not illustrate in Figure 27.Like this, the operation of flexible differential transmission cable is just than being easier to.
And then, on a plurality of differential transmission circuits 315 and imbed on a plurality of slot parts 314 of insulant 316, form insulating barrier 317.Like this, can be by insulant 316 and a plurality of differential transmission circuits 315 of insulating barrier 317 protections whole.In addition, insulating barrier 317 can also be set, keep insulant 316 is imbedded the state of slot part 314.
Here, as insulant 316 and insulating barrier 317, use can made under the state of differential transmission cable, keeps the insulating material of flexible property.For example, can use FEP fluorine-type resin, amorphous polyene resin, PEN (polyphenyl dioctyl phthalate two alcohol esters) etc. such as (tetrafluoroethylene one hexafluoro propylene co-polymerization resins).
In addition, can also be after formation has a plurality of differential transmission circuits 315 of slot part 314, comprising formation insulating barrier 317 on a plurality of differential transmission circuits 315 of slot part 314, imbed the slot part 314 of insulant 316 and the insulating barrier 317 on the differential transmission circuit 315 thereby form simultaneously.
And then, as shown in figure 27, on insulating barrier 317, form ground plane 318, also form ground plane 319, thereby can form structure with ground plane 318,319 shielding differential transmission circuits 315 at the back side of dielectric piece 310.Material as forming ground plane 318,319 is not particularly limited, for example both can stacked rolled copper foil and back use such as electrolytic copper foil, also can form behind those metals of evaporation.
Figure 28 A-Figure 28 D is the process profile of manufacture method of the flexible differential transmission cable in the variation of expression the 7th execution mode.These figure are the profiles along the cable widths direction.
The basic working procedure of this variation is identical with the operation shown in Figure 25 A-Figure 25 D., under the state that becomes one with dielectric piece 310, form on a plurality of differential transmission circuit 315 this point that are grounded layer shielding simultaneously, the operation of variation is different with the operation shown in Figure 25 A-Figure 25 D.
At first, shown in Figure 28 A, on dielectric piece 310, form the 1st ground plane 320 and the 1st insulating barrier 321 successively, shown in Figure 28 B, on the 1st insulating barrier 321, form the 1st conducting film 311, dielectric film 312 and the 2nd conducting film 313 successively for another example.And then, shown in Figure 28 C, on the 2nd conducting film 313, form the 2nd insulating barrier 322 and the 2nd ground plane 323 successively.Material as forming the 1st ground plane 322 and the 2nd ground plane 323 is not particularly limited, for example both can stacked rolled copper foil and back uses such as electrolytic copper foil, aluminium foil, also can form behind those metals of evaporation.In addition, as the material that forms the 1st insulating barrier 321 and the 2nd insulating barrier 322, be not particularly limited, for example, can enumerate FEP fluorine-type resin, amorphous polyene resin, PEN (polyphenyl dioctyl phthalate two alcohol esters) etc. such as (tetrafluoroethylene one hexafluoro propylene co-polymerization resins).In order to reduce dielectric constant, it is that it is preferred that insulating barrier is made the foaming shape that comprises blowing agent especially.
Then, shown in Figure 28 D, cut off the 2nd ground plane the 323, the 2nd insulating barrier the 322, the 2nd conducting film 313, dielectric film 312 and the 1st conducting film 311, on dielectric piece 310,, form the slot part 314 of many band shapes side by side with state parallel to each other.Like this, just form many differential transmission circuits 315 that separated by slot part 314 mutually side by side.Each differential transmission circuit 315 is made of the duplexer of the 1st conducting film 311, dielectric film the 312, the 2nd conducting film the 313, the 2nd insulating barrier 322 and the 2nd ground plane 323.
After adopting the method for this variation, many differential transmission circuits 315 that separated by slot part 314 mutually under the state that becomes one with dielectric piece 310, are formed simultaneously.And then, can make differential transmission circuit 315 become the structure of conductively-closed.And then, the same with the differential transmission circuit 315 that adopts the method shown in Figure 25 A-Figure 25 D to form, because make the live width (width of the cut the 1st and the 2nd conducting film 311,313) of a pair of holding wire that constitutes differential transmission circuit 315 and the interval between holding wire (i.e. distance between the 1st and the 2nd conducting film, in other words, be the thickness of the 1st dielectric film 312) as one man form, so can reduce the deviation of the characteristic impedance of differential transmission circuit, realize the high flexible differential transmission cable of reliability.
In addition, as previously mentioned, for the 1st conducting film the 311, the 2nd conducting film 313 that prevents from when cutting off, might produce or the residue (becoming the reason of short circuit) of the 2nd ground plane 323 with parting tools such as slicing machines, stop to cut off after can staying the part of the 1st conducting film 311, promptly be cut to the 1st conducting film 311 thickness direction midway till, under the remaining state of a part that makes the 1st conducting film 311, the remnants of defeated troops of removing the 1st conducting film 311 by etching.
In addition, though do not illustrate, but can with tell about with Figure 26 the same, in order to utilize slicing machine to cut off conscientiously, after cutting off the 2nd ground plane the 323, the 2nd insulating barrier the 322, the 2nd conducting film 313, dielectric film 312 and the 1st conducting film 311, nip to thickness direction again and cut off the part of the 1st insulating barrier 321, form slot part 314.
Figure 29 is the flexible differential transmission cable of expression for adopting the method shown in Figure 28 A-Figure 28 D to form, by imbedding slot part 314, thereby make the surface of flexible differential transmission cable become the profile of the cable widths direction (perpendicular to the direction of length direction) of the structure that does not have concavo-convex tabular surface to major general's insulant 316.
In addition, in order to protect the 2nd ground plane 323, can also be as shown in figure 29, and then, form insulating barrier 317 on a plurality of differential transmission circuits 315 and imbed on a plurality of slot parts 314 of insulant 316.
(the 8th execution mode)
In the high-density circuit substrate, how the corresponding syndeton of output/input terminal that requirement increases with being accompanied by high density in this requirement, makes to high reliability the output/input terminal that forms on the high-density circuit substrate, be connected with other circuit substrate, become important problem.
For example: at the signal-transmitting cable that is used to transmission signals that comprises 2 constituting bodies, the notebook computer that can fold and mobile phone etc., have following requirement:
Can be with very high connection reliability, the output/input terminal that will form on the circuit substrate separately of 2 constituting bodies that constitute notebook computer and mobile phone etc. with trickle wire distribution distance is electrically connected mutually;
Have resistant to bending material and structure.
As the signal-transmitting cable that adapts to above-mentioned requirements, in the prior art, the signal-transmitting cable that for example has Japanese documentation (spy opens 2002-134845 number) to record and narrate.This signal-transmitting cable, at the single or double of the flexible substrate that is formed by polyimide film, the many wirings of Butut form splicing ear at its two ends.
Figure 30 represents the structure of the flexible signal-transmitting cable 700 that above-mentioned Japanese documentation is recorded and narrated.Flexible signal-transmitting cable 700 connects 2 pieces of circuit substrates that are provided with on 2 constituting bodies of clamshell phone.In flexible signal-transmitting cable 700, insulated substrate 701 is set.Insulated substrate 701 has the shape of concentrating of bending stress when being intended to avoid mobile phone to carry out jackknife action.On insulated substrate 701, separate fixed spacing, form many wirings 702 in parallel to each other.Two ends in each wiring 702 are provided with terminal 703.
Multiterminal of the output/input terminal of adaptive circuit substrate and after increasing the quantity of wiring 702, need form wiring 702 on insulated substrate 701 two sides, 702 spacing granular maybe will connect up.
, after the quantity of increase wiring 702, because the quantity increase of the terminal 703 that forms at the two ends of wiring 702, so the area of flexible signal-transmitting cable 700 increases.Therefore, can not in limited area, be connected to high-density with a plurality of circuit substrates.
In addition, even will connect up 702 spacing granular, if not in the bigger island of portion of terminal setting of wiring, other circuit substrate contraposition and connection of just being difficult to be connected with needs.And then, bigger island become the densification that hinders wiring main cause.
On the other hand, during transmitting high-frequency signal, under the effect of the skin effect of the conductor that constitutes wiring 702, for example the degree of depth of the epidermis of required conductor is 3 μ m for the signal that transmits 500MHz, and the degree of depth of the epidermis the during signal of transmission 1GHz is 2 μ m.Because the about 40 μ m of conductor thickness of wiring 702 are so have only 2-3 μ m to be used to the transmission of high-frequency signal among about 40 μ m.Like this, the transmission utilization ratio of the unit basal area of the conductor of transmitting high-frequency signal is with regard to extreme difference.
Figure 31 A, Figure 31 B are stereogram and the profiles thereof that is illustrated in the signal-transmitting cable of telling about in the 1st execution mode etc. of preamble of the present invention 600.Shown in Figure 31 A, signal-transmitting cable 600 is by being constituted by the duplexer sheet of alternately laminated a plurality of electric conductor sheets 501 and sheet insulators 502.The end 501a-501g of each electric conductor sheet 501, shown in Figure 31 B, being situated between has sheet insulators 502, forms steppedly, and this end 501a-501g becomes the electrode terminal of the holding wire that takes out each electric conductor sheet 501.
Electric conductor sheet 501 and sheet insulators 502 for example, on the surface of supporting base material, adopt methods such as vacuum evaporation, sputter or CVD to form.The electrode terminal 501a-501g that forms steppedly, in the process of multiple stratification such as evaporation electric conductor sheet 501 and sheet insulators 502 repeatedly, implement following two operations repeatedly after, remove resist at last and just can form.
Cover the end of the sheet insulators 502 that electric conductor sheet 510 needn't adhere to resist after, the operation of evaporation electric conductor sheet 510;
Cover the end of the electric conductor sheet that sheet insulators 502 needn't adhere to resist after, the operation of evaporation sheet insulators 502.
The electric conductor sheet 501 and the sheet insulators 502 that adopt this method to form can be thinned to about 0.5-2 μ m, so even for example stacked 50 layers electric conductor sheet 510, its thickness is also below 200 μ m.Like this, signal-transmitting cable just can be brought into play enough flexible property.
Perhaps, as electric conductor sheet 510, use rolled copper foil (for example 5 μ m); As sheet insulators 502, the fully aromatic polyamide film of the prepreg state of thickness (for example 30 μ m) that use is decided.After crimping such as heating and pressurizing, also can form.This method is compared with methods such as adopting evaporation, though thickness increases, has the advantage that can make cheaply.In addition, owing to can form electric conductor sheet 501 and sheet insulators 502, also obtain required circuit constant easily with thickening.
Like this, signal-transmitting cable 600 can provide the signal-transmitting cable of wiring density height, flexible property excellence.; because taking out the electrode terminal 501a-501g of holding wire forms steppedly; so carrying out terminal when being connected with other circuit substrate etc., need to prepare and the identical special connector of this stair-stepping form, this becomes in a problem aspect signal-transmitting cable 600 practicability.
This problem of signal-transmitting cable 600 can be resolved by the structure that adopts the electrode terminal shown in Figure 32 A, Figure 32 B.In Figure 32 A; form the protective layer 503 of the stair-stepping electrode terminal 501a-501g that covers the end that is positioned at signal-transmitting cable 600; on this protective layer 503; form with path hole conductor 504a-504g that each electrode terminal 501a-501g is connected after; on each path hole conductor 504a-504g, form a plurality of islands 505.The surface that electrode terminal 501a-501g is extended to signal-transmitting cable 600 is on same.
In Figure 32 B, on stair-stepping each electrode terminal 501a-501g, form protruding 506a-506g, the height of each protruding 506a-506g, as one man become with the surface of signal-transmitting cable 600 in one side.Like this, the surface that electrode terminal 501a-501g is extended to signal-transmitting cable 600 is same.
After adopting the structure shown in Figure 32 A, Figure 32 B, electrode terminal 501a-501g with the electric conductor sheet 501 that forms steppedly, with extending to the surface of signal-transmitting cable is that same path hole conductor 504a-504g and protruding 506a-506g is connected, thereby can be connected with other circuit substrates at an easy rate.
, this structure in order to form path hole conductor 504a-504g and protruding 506a-506g, and needs unnecessary operation, causes the cost of signal-transmitting cable to rise.In addition, stair-stepping electrode terminal 501a-501g also might reduce reliability with after path hole conductor 504a-504g and protruding 506a-506g are connected.
In view of this problem, the 8th execution mode has proposed to use simple method, is the scheme of arranging electrode terminal in same on the surface with signal-transmitting cable.
Below, with reference to accompanying drawing, tell about the 8th execution mode.In following accompanying drawing,, has the inscape of identical function in fact with identical symbolic representation for making interest of clarity.In addition, the present invention is not limited to following execution mode.
Figure 33 A-Figure 33 C is the process profile of the manufacture method of the signal-transmitting cable 610 that relates to of expression the present invention the 8th execution mode.
At first, shown in Figure 33 A, make the end of each electric conductor sheet 510 and sheet insulators 520 become alternately laminated electric conductor sheet 510 in cascaded surface ground and sheet insulators 520, make duplexer sheet 610.
Cascaded surface adopts following method to form.That is: in the sheet plane 610b of the thin slice end of duplexer sheet 610 610a, with the end of electric conductor sheet 510 and the end of sheet insulators 520, the thin slice that is positioned at the side of another sheet plane 610c disposes the closer to the side of thin slice end 610a ground steppedly, thereby on the sheet plane 610b of thin slice end 610a, form cascaded surface.
Here, the end 510a-510d of each the electric conductor sheet that in the cascaded surface of duplexer sheet 610, exposes successively, the electrode terminal of formation signal-transmitting cable 620.
Then, shown in Figure 33 B, another sheet plane 610c (sheet plane of orlop thin slice 520a one side among the figure) among the end 610a of resin component 530 and duplexer sheet 610 is joined.To the shape of resin component 530, there is no particular limitation, but preferably become the shape (the section triangle among Figure 33 A) of shape of the end of the laminated body 610 that is equivalent to form cascaded surface and disappears.
With resin component 530 under the state that laminated body sheet 610 is pushed, the direction (sheet thickness direction) of the arrow in Figure 33 B is pushed resin component 530 and laminated body sheet 610.So, shown in Figure 33 C, the end 610a of laminated body sheet 610 distortion, thus with laminated body sheet 610 and resin component 530 crimping, the surface of the thin slice 520e of the superiors of the cascaded surface of laminated body sheet 610 and laminated body sheet becomes same plane.Like this, the electrode terminal 510a-510d that forms steppedly, in the figure of laminated body sheet 610, just along the surface of the thin slice 520e of the superiors, be that arrange on the surface of signal-transmitting cable 620.
Here, shape with resin component 530, make the shape of shape of the end of the laminated body sheet 610 that is equivalent to form cascaded surface and disappears, in other words, if will be positioned at another face 530b of an opposite side of a face 530a of the resin component 530 that joins with laminated body sheet 610, set the shape of resin component 530 with the cascaded surface almost parallel ground of laminated body sheet 610, so when the end distortion that makes laminated body sheet 610, just shown in Figure 33 C, another face 530b of resin component 530, become roughly the same face, the back side planarization of signal-transmitting cable 620 with another sheet plane 610c of laminated body sheet 610.
In addition, if the B grade resin of the semi-harden shape that resin component 530 is made up of thermosetting epoxy resin resinoid or polyolefin resin constitutes, after being installed to resin component 530 on the laminated body sheet 610 so, by making resin component 530 sclerosis, just can make resin component 530 and laminated body sheet 610 integrated simply.
And then when the end distortion that makes laminated body sheet 610, shown in Figure 33 B, a sheet plane 610b who is preferably in laminated body sheet 610 goes up configuration dull and stereotyped 640.Like this, when connecing pressurizing resin parts 530, the 610b (cascaded surface) of a sheet plane by making laminated body sheet 610 joins with dull and stereotyped 540, thereby can make 610b uniform operation in same plane of cascaded surface He another sheet plane of laminated body sheet 610 at an easy rate.
In the signal-transmitting cable 620 that the manufacture method of telling about more than adopting forms, the end of a face 610b of electrode terminal 510a-510d and cable is arranged on the same plane.Therefore, can be at an easy rate be connected with the terminal of other circuit substrate etc., and with being connected of other electrical structure body such as circuit substrate in, can intactly use the connector of prior art, therefore can reduce the manufacturing cost of syndeton.
In addition, path hole conductor 504a-504g shown in Figure 32 A, Figure 32 B and protruding 506a-506g are not set, and the simple operation of only pushing resin component 530 just can make planarization, but also does not produce unnecessary tie point, so produce the efficient height, can obtain high-quality.
Here, electric conductor sheet 510 and sheet insulators 520 for example by methods such as vacuum evaporation, sputter or CAD, form on the surface of supporting base material.Stepped electrode terminal 510a-510d, then with reference to Figure 31 A, Figure 31 B, the same method of telling about of employing and preamble forms.
Electric conductor sheet 510 and sheet insulators 520 that evaporation forms can be thinned to about 0.5-2 μ m, so even for example stacked 50 layers electric conductor sheet 510, its thickness is also below 200 μ m.Like this, signal-transmitting cable 620 just can be brought into play enough flexible property.
After electric conductor sheet 510 that will constitute by rolled copper foil and sheet insulators 520 combinations that constitute by the fully aromatic polyamide film of prepreg state, when forming signal-transmitting cable, compare with adopting evaporation coating method,, have the advantage that to make cheaply though thickness increases.In addition, owing to can form electric conductor sheet 510 and sheet insulators 520, also obtain required circuit constant easily with thickening.
Figure 34 is the vertical view that expression has the signal-transmitting cable 620 of the cross-section structure shown in Figure 33 C.In the end of duplexer sheet 620, each electrode terminal 510a-510d exposes after the Width of signal-transmitting cable 620 becomes band shape.Between each electrode terminal 510a-510d, being provided with becomes the sheet insulators 520a-520d that exposes after the band shape equally.Therefore, the separation of the electric property of electrode terminal 510a-510d insulated body sheet 520a-520d.In addition, owing to can make the width of electric conductor sheet 510 quite big, do not increase so can not produce the resistance that electric conductor sheet 510 is made the holding wire that causes after thin.
Figure 35 is illustrated in the vertical view that forms the signal-transmitting cable 620 of two holding wires in each electric conductor sheet 510.As shown in figure 35, the parallel formation of the holding wire of wide W, in the end of duplexer sheet, the electrode terminal 510a of each holding wire 1-510d 1And electrode terminal 510a 2-510d 2, expose independently respectively.Like this, by a plurality of holding wires of formation on each electric conductor sheet 510, thereby can obtain highdensity signal-transmitting cable 620.
Figure 36 A, Figure 36 B are the process profile of expression with the manufacture method of the signal-transmitting cable 630 of the reinforcement material of the 530 double as laminated body sheets 610 of the resin component shown in Figure 33 B, the 33C.
At first, shown in Figure 36 A, under the state that another sheet plane 610c that makes resin component 531 and laminated body sheet 610 joins, the direction (sheet thickness direction) of the arrow in Figure 36 A is pushed resin component 531 and laminated body sheet 610.Resin component 531 has flat body 531a that catches laminated body sheet 610 and the rake 531b that catches the end of laminated body sheet 610 in the end of body 531a.Rake 531b has the shape of shape of the end of the laminated body 630 that is equivalent to form cascaded surface and disappears.
With resin component 531 after laminated body sheet 610 is pushed, shown in Figure 36 b, the end distortion of laminated body sheet 610, thus with laminated body sheet 610 and resin component 531 crimping, another sheet plane of the cascaded surface of laminated body sheet 610 and laminated body sheet 610 becomes same plane.Like this, the electrode terminal 510a-510d that forms steppedly, in the figure of laminated body sheet 630, just along the surface of the thin slice 520e of the superiors, be that arrange on the surface of signal-transmitting cable.
In addition, after on whole of laminated body sheet 610 resin component 531 being installed, can be with the reinforcement material of resin component 531 as laminated body sheet 610.
Figure 37 A, Figure 37 B are the configuration profiles of the two ends that are illustrated in duplexer sheet 610 electrode terminal when being provided with the electrode terminal of electric conductor sheet 610.Figure 37 A, Figure 37 B are the profiles along the length direction of electric conductor sheet.In Figure 37 A, Figure 37 B, 550a, 550b, the zone that in the expression laminated body sheet 610 electrode terminal is exposed.Zone 550a, 550b are separately positioned on the sheet plane two ends.
In the structure of Figure 37 A, regional 550a, 550b are configured in the same sheet plane (a sheet plane 610b) of laminated body sheet 610.Resin component 530 forms at the sheet plane that is arranged in the opposite side of regional 550a, 550b (another sheet plane 610c).
In the structure of Figure 37 B, regional 550a, 550b are configured in respectively among mutually different sheet plane 610b, the 610c of laminated body sheet 610.Resin component 530,530 is configured in the sheet plane 610c, the 610b that are arranged in the opposite side of regional 550a, 550b and forms.
Like this, regional 550a, 550b by suitable configuration is exposed electrode terminal can be connected with other circuit substrate etc. more easily.
Figure 38 represents to adopt the signal-transmitting cable 620 of the 8th execution mode formation, the structure when being used for the connection between circuit substrate 560a, the 560b.Because the flexible property height of signal-transmitting cable 620, so, also can realize the electrical connection that reliability is high even in e-machines such as the notebook computer of for example folding structure and mobile phone, use.
Figure 39 represents the vertical view of the signal-transmitting cable 650 of formation like this.In regional 550a, the 550b at cable two ends, expose electrode terminal 550a, the 550b of holding wire.As shown in figure 39, along the length direction (direction of dotted line P-Q) of duplexer sheet, after certain width cut-out, can form many signal-transmitting cables simultaneously.Like this, can obtain cheap signal-transmitting cable at an easy rate.
More than told about the 8th execution mode.But these are told about, and non-limiting item.Undoubtedly, can carry out various changes.For example: told about with the example of electric conductor sheet 510 as holding wire.But, a part of electric conductor sheet 510 can also be used as screen in order to reduce generating noise.
In addition, the 8th execution mode be applicable to can connect to high-density a plurality of circuit substrates technology.But in circuit board, also can use this technology.
In other words, resin component and the thin slice end that is positioned at a side of the cascaded surface that does not become the duplexer sheet are joined, after pushing resin component, make the cascaded surface of duplexer sheet and the superiors of duplexer sheet become the end distortion that makes the duplexer sheet in the same plane, thereby make circuit board.
Here, the end of electric conductor sheet of exposing the cascaded surface of duplexer sheet constitutes the electrode terminal of circuit board and makes the end distortion of duplexer sheet, thereby the surface that electrode terminal is configured in the duplexer sheet is in the same plane, and is identical with the situation of signal-transmitting cable.
More than, around optimal concrete example, told about the present invention in detail.But, can in the spirit and scope of the present invention of being set forth without prejudice to hereinafter " claims ", carry out various changes about the combination and permutation of the parts of this desirable execution mode.

Claims (25)

1, a kind of signal-transmitting cable has:
The dielectric sandwich layer that extends along the length direction of cable,
The 1st stacked conductive layer on a face of described dielectric sandwich layer,
Stacked the 2nd conductive layer on another face of described dielectric sandwich layer,
Cover the insulator of described dielectric sandwich layer and described the 1st, the 2nd conductive layer,
Cover the conductive shield of described insulator, and
And then cover the insulating properties crust of described conductive shield;
Described dielectric sandwich layer and described the 1st, the 2nd conductive layer have identical width mutually; Described the 1st, the 2nd conductive layer has identical thickness mutually.
2, signal-transmitting cable as claimed in claim 1 is characterized in that: described the 1st, the 2nd conductive layer constitutes the pair of differential holding wire.
3, signal-transmitting cable as claimed in claim 1 is characterized in that: on described the 1st conductive layer in stacked the 1st dielectric layer, and the stacked the 1st earthy conductive layer on the 1st dielectric layer also;
On described the 2nd conductive layer during stacked the 2nd dielectric layer in, the stacked the 2nd earthy conductive layer on the 2nd dielectric layer also;
Described the 1st dielectric layer, the described the 1st earthy conductive layer, described the 2nd dielectric layer and the described the 2nd earthy conductive layer have identical width with described dielectric sandwich layer, described the 1st conductive layer and described the 2nd conductive layer;
Described the 1st dielectric layer and described the 2nd dielectric layer have identical thickness mutually.
4, signal-transmitting cable as claimed in claim 3 is characterized in that: the thickness of described dielectric sandwich layer is thinner than the described the 1st and the 2nd dielectric layer thickness.
5, signal-transmitting cable as claimed in claim 1 is characterized in that: have a plurality of described transmission core cables, these a plurality of transmission core cables are contained by described insulator.
6, signal-transmitting cable as claimed in claim 1 is characterized in that: described dielectric sandwich layer is made of some in polyimides, fully aromatic polyamide, PETG, poly-hexichol sulfide and the liquid crystal polymer.
7, signal-transmitting cable as claimed in claim 3 is characterized in that: described the 1st conductive layer and described the 2nd conductive layer, the color or the shape on surface are different.
8, a kind of manufacture method of signal-transmitting cable comprises:
Prepare the operation of dielectric core thin slice, wherein, described dielectric core thin slice has sheet length that is equal to or greater than cable length and the sheet width that is equal to or greater than the several times of cable widths;
On the two sides of described dielectric core thin slice, distinguish stacked electric conductor sheet, cover the operation on described two sides;
Cut apart described dielectric core thin slice with cable widths, form the operation of a plurality of transmission core cables simultaneously; And
Each the operation that contains described a plurality of transmission core cables with insulator.
9, the manufacture method of signal-transmitting cable as claimed in claim 8, it is characterized in that: also comprise: after cutting apart described dielectric core thin slice and forming a plurality of transmission core cables, the operation of removing the residue of described dielectric core thin slice residual on the divisional plane of described transmission core cable.
10, a kind of manufacture method of signal-transmitting cable comprises:
Prepare the operation of dielectric core thin slice, wherein, described dielectric core thin slice has sheet length that is equal to or greater than cable length and the sheet width that is equal to or greater than the several times of cable widths;
On the two sides of described dielectric core thin slice, distinguish stacked electric conductor sheet, cover the operation on described two sides;
On described electric conductor sheet, distinguish the layered dielectric sheet, cover the operation of this electric conductor sheet;
On described dielectric piece, distinguish stacked earthy electric conductor sheet, cover the operation of this dielectric piece;
Cut apart described dielectric core thin slice with cable widths, form the operation of a plurality of transmission core cables simultaneously; And
Each the operation that contains described a plurality of transmission core cables with insulator.
11, a kind of manufacture method of multicore differential transmission cable comprises:
Form the operation of duplexer sheet, it stacks gradually the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet, wherein, described the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet have the length dimension of the size that is equal to or greater than the cable length direction and the width dimensions of the several times of the size that is equal to or greater than the cable widths direction respectively;
Across the 2nd dielectric piece, stack gradually a plurality of described duplexer sheets, form the operation of long size sheet;
This length size sheet is rolled into the operation of cylinder shape; And
Pull out the end of thin slice from the described long size sheet that is rolled into the cylinder shape on one side, Yi Bian the operation of cutting apart.
12, the manufacture method of multicore differential transmission cable as claimed in claim 11 is characterized in that: as the preceding operation of cutting apart described long size sheet, comprise the operation that this length size sheet is rolled into the cylinder shape;
The operation of cutting apart described long size sheet, from the described long size sheet that be rolled into cylinder shape pull out the end of thin slice on one side, cut apart on one side.
13, a kind of multicore differential transmission cable, has the duplexer sheet that stacks gradually the 1st electric conductor sheet, the 1st dielectric piece and the 2nd electric conductor sheet and form, wherein, described the 1st electric conductor sheet, described the 1st dielectric piece and described the 2nd electric conductor sheet, the length dimension and the width dimensions that equals cable widths direction size that have the size that equals the cable length direction respectively
Described the 1st electric conductor sheet and the 2nd electric conductor sheet, thickness is identical each other;
Described duplexer sheet is the surface of at least one side in described the 1st, the 2nd electric conductor sheet, stacks gradually the 3rd dielectric piece and the 3rd electric conductor sheet;
Across the 2nd dielectric piece, stack gradually a plurality of described duplexer sheets;
Described the 1st electric conductor sheet and the 2nd electric conductor sheet constitute the pair of differential transmission line that clips described the 1st dielectric piece and dispose;
Described the 3rd electric conductor sheet constitutes earth connection.
14, multicore differential transmission cable as claimed in claim 13 is characterized in that: have connector at cable end;
Described connector has the thickness heavy section thicker than other thin slice position of described the 2nd dielectric piece.
15, multicore differential transmission cable as claimed in claim 14 is characterized in that: after removing the part of described the 2nd dielectric piece in the described heavy section, expose described the 1st, the 2nd electric conductor sheet.
16, a kind of manufacture method of flexible differential transmission cable comprises:
On flexible dielectric piece, form the operation of the 1st conducting film;
On described the 1st conducting film, form the operation of dielectric film;
On described dielectric film, form the operation of the 2nd conducting film;
After cutting off described the 2nd conducting film, described dielectric film and described the 1st conducting film, on described dielectric piece, form in the slot part of a plurality of band shapes side by side, between the described slot part of adjacency, form by by this slot part from the operation of the differential transmission circuit that duplexer constituted of described the 1st conducting film, described dielectric film and described the 2nd conducting film; And
After forming described differential transmission circuit, insulant is imbedded the operation of described slot part;
Form the described slot part of mutually the same width, constitute the differential transmission circuit by described duplexer with mutually the same width.
17, the manufacture method of flexible differential transmission cable as claimed in claim 16 is characterized in that: also comprise: the operation that covers described slot part and the described differential transmission circuit of imbedding described insulant with insulating barrier.
18, the manufacture method of flexible differential transmission cable as claimed in claim 17 is characterized in that: also comprise: the operation that forms ground plane on described insulating barrier.
19, the manufacture method of flexible differential transmission cable as claimed in claim 16 is characterized in that: also comprise: the operation that forms ground plane at the back side of described dielectric piece.
20, the manufacture method of flexible differential transmission cable as claimed in claim 16, it is characterized in that: cutting, up to the thickness direction of described the 2nd conducting film, described dielectric film and described the 1st conducting film midway and make described the 1st conducting film stay a part and after forming banded slot part, pass through etch processes, thereby remove the remnants of defeated troops of described the 1st conducting film, implement to form the operation of described slot part.
21, a kind of manufacture method of signal-transmitting cable, comprise: make the duplexer sheet after alternately laminated configuration electric conductor sheet and the sheet insulators, implement stepped configuration simultaneously, the end of the described electric conductor sheet in a side's who makes in the thin slice end of described duplexer sheet the sheet plane and the end of described sheet insulators, the closer to the opposing party's sheet plane one side just the closer to described thin slice end one side, thereby on the described side's of this thin slice end sheet plane, form the 1st operation of cascaded surface;
The 2nd operation that the opposing party's the sheet plane of the described thin slice end of resin component and described laminated body sheet is joined; And
By pushing described resin component along the sheet thickness direction, make the distortion of described thin slice end, thereby make a described cascaded surface and a described side's sheet plane become same, become the 3rd operation that same the described electric conductor sheet that described cascaded surface exposed constitutes electrode terminal respectively thereby make by sheet plane with a described side.
22, the manufacture method of signal-transmitting cable as claimed in claim 21, it is characterized in that: use described resin component: when the sheet plane that makes this resin component and described the opposing party joins with following shape, make the described resin component that joins with described the opposing party's sheet plane one side an another side opposite side, this resin component, with described cascaded surface almost parallel;
In described the 3rd operation, make described thin slice end distortion, thereby make the another side of described resin component, become same with described the opposing party's of described duplexer sheet sheet plane.
23, the manufacture method of signal-transmitting cable as claimed in claim 21, it is characterized in that: described resin component is made of semi-harden shape resin, after described the 3rd operation, also comprise: after making this resin component sclerosis, this resin component and the incorporate operation of described duplexer sheet.
24, the manufacture method of signal-transmitting cable as claimed in claim 21 is characterized in that: use the described resin component with the size of joining with the whole face of described duplexer sheet.
25, the manufacture method of signal-transmitting cable as claimed in claim 21, it is characterized in that: in described the 3rd operation, under the state that the sheet plane that makes flat board with a described side of the described thin slice end of described duplexer sheet joins, push described resin component along the sheet thickness direction.
CN 200510125397 2004-11-16 2005-11-16 Signal transmission cable and method for making same Pending CN1776830A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2004332076 2004-11-16
JP2004332075 2004-11-16
JP2004332075 2004-11-16
JP2005113697 2005-04-11
JP2005199635 2005-07-08

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CN1776830A true CN1776830A (en) 2006-05-24

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101908392A (en) * 2009-06-08 2010-12-08 住友电气工业株式会社 Twinax cable
CN102570081A (en) * 2010-11-05 2012-07-11 日立电线株式会社 Connection structure and a connection method for connecting a differential signal transmission cable to a circuit board
CN102610304A (en) * 2011-01-24 2012-07-25 日立电线株式会社 Differential signal transmission cable
CN105993122A (en) * 2013-11-29 2016-10-05 日产自动车株式会社 Switching device
CN106448820A (en) * 2015-08-10 2017-02-22 纬创资通股份有限公司 Cable wire
CN108281225A (en) * 2016-12-16 2018-07-13 矢崎总业株式会社 Wiring part, the manufacturing method of wiring part and wiring part connection structure
CN109065223A (en) * 2018-07-26 2018-12-21 维沃移动通信有限公司 A kind of signal transmssion line and preparation method thereof, terminal device
CN110070959A (en) * 2018-01-23 2019-07-30 鹏鼎控股(深圳)股份有限公司 Winding displacement type cable and preparation method thereof
CN114552155A (en) * 2022-04-25 2022-05-27 电子科技大学成都学院 Dual-mode transmission line

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101908392A (en) * 2009-06-08 2010-12-08 住友电气工业株式会社 Twinax cable
CN102570081A (en) * 2010-11-05 2012-07-11 日立电线株式会社 Connection structure and a connection method for connecting a differential signal transmission cable to a circuit board
CN102610304A (en) * 2011-01-24 2012-07-25 日立电线株式会社 Differential signal transmission cable
CN102610304B (en) * 2011-01-24 2016-01-13 日立金属株式会社 Differential signal transmission cable
US10312897B2 (en) 2013-11-29 2019-06-04 Nissan Motor Co., Ltd. Switching device
CN105993122A (en) * 2013-11-29 2016-10-05 日产自动车株式会社 Switching device
CN106448820A (en) * 2015-08-10 2017-02-22 纬创资通股份有限公司 Cable wire
CN106448820B (en) * 2015-08-10 2018-06-01 纬创资通股份有限公司 Cable wire
CN108281225A (en) * 2016-12-16 2018-07-13 矢崎总业株式会社 Wiring part, the manufacturing method of wiring part and wiring part connection structure
CN108281225B (en) * 2016-12-16 2020-10-09 矢崎总业株式会社 Wiring member, method for manufacturing wiring member, and wiring member connection structure
CN110070959A (en) * 2018-01-23 2019-07-30 鹏鼎控股(深圳)股份有限公司 Winding displacement type cable and preparation method thereof
CN109065223A (en) * 2018-07-26 2018-12-21 维沃移动通信有限公司 A kind of signal transmssion line and preparation method thereof, terminal device
CN114552155A (en) * 2022-04-25 2022-05-27 电子科技大学成都学院 Dual-mode transmission line
CN114552155B (en) * 2022-04-25 2022-07-05 电子科技大学成都学院 Dual-mode transmission line

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