CN102959803B

CN102959803B - Flat cable and method for manufacturing same

Info

Publication number: CN102959803B
Application number: CN201280001713.9A
Authority: CN
Inventors: 花房幸司; 松下幸哉; 御影胜成; 辻野厚; 大岛三夫; 松田龙男
Original assignee: Sumitomo Electric Industries Ltd
Current assignee: Sumitomo Electric Industries Ltd
Priority date: 2011-06-16
Filing date: 2012-06-14
Publication date: 2015-05-13
Anticipated expiration: 2032-06-14
Also published as: CN102959803A; TW201306059A; KR20130020901A; KR101467655B1; TWI497534B

Abstract

A flat cable (1) comprises: a cable main body (10) in which insulating films (3a, 3b) are bonded on both surfaces of a plurality of conductors (12) arranged in a planar manner; and a connection member (21) in which a connection base (22) is bonded to the same number of connection conductors (23) as the conductors (12). The connection member (21) is bonded to a longitudinal direction end (11) of the cable main body (10) by an adhesive (16), and the conductors (12) are connected through a conductive paste (15) to the connection conductors (23). The conductive paste (15) is coated in a region narrower than the width of the conductors (12).

Description

Flat cable and manufacture method thereof

Technical field

The present invention relates to flat cable and manufacture method thereof.

Background technology

As the flat cable that can carry out high density distribution in the confined space, such as, use following flat cable, that is, by many conductor arrangement in one plane, lamination dielectric film and the flat cable formed respectively from the both sides of this arrangement plane.The flat cable be made up of this flat cable, its end becomes connecting portion, this connecting portion exposes the connecting electrode portion be made up of the multiple conductors arranged at predetermined intervals, is connected with the flat cable as connecting object with multiple connecting electrode portion and carries out distribution.

As this flat cable, known a kind of structure with conductivity layer of paste and insulative resin bond layer, this conductive paste is folded to be layer by layer formed in multiple connecting electrode portions of being pasted on base material, on the stacked position be formed in except connecting electrode portion of this insulative resin bond layer, and using thermoplastic resin material as principal component (for example, referring to patent documentation 1,2).In this flat cable, by fitting with the flat cable as connecting object with multiple connecting electrode portion, thus can make to be connected by the conducting of conductivity layer of paste between connecting electrode portion, in addition, bonding by insulating properties bond layer between base material.

Patent documentation 1: Japanese Unexamined Patent Publication 2011-77125 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2011-77126 publication

Summary of the invention

In above-mentioned flat cable, the upper surface position of conductivity layer of paste and insulative resin bond layer is configured in same plane.If make the flat cable as connecting object be connected with this flat cable, then be close to from the connecting electrode portion that the base material of the flat cable as connecting object is given prominence to and conductive paste, but the conductive paste of conductivity layer of paste can be expanded to side by the connecting electrode portion conquassation of flat cable each other, therefore, may contact and make the short circuit of connecting electrode portion between the conductive paste in adjacent connecting electrode portion.In this case, the connection between flat cable also can become insufficient.

The object of the present invention is to provide a kind of flat cable, it can be connected well with the flat cable as connecting object, and the problem such as poor attachment or short circuit can not occur.

The feature that can solve the flat cable of the present invention of above-mentioned problem is to have:

Cable main, it is being fitted with dielectric film with the two sides of many conductors of plane arrangement, and in the length direction end of cable main, a part for described conductor is not covered by described dielectric film; And

Link, it is formed as being connected base material with the bonding conductor of described conductor equal number is pasted with,

A part for described link is pasted onto the length direction end of described cable main by bonding agent,

Described conductor is connected via conductive paste with described bonding conductor,

Described conductive paste is coated in the region narrower than the width of described conductor.

In the flat cable that the invention described above relates to, also can be configured to,

In the length direction end of described cable main, described conductor is covered by described dielectric film with the side of the arrangement plane of plane arrangement, and the opposite side of arrangement plane is not covered by described dielectric film.

In the length direction end of described cable main, described conductor is not covered by any described dielectric film.

The length being coated with the region of described conductive paste is less than or equal to 1/2 of the length of the described conductor exposed from the length direction end of described dielectric film,

Between adjacent described conductor, the respective position of described conductive paste on described length direction does not overlap each other.

Described bonding conductor has: wide width part, and it has the width dimensions larger than described conductor; And narrow width part, it has the width dimensions less than described wide width part,

Between adjacent described bonding conductor, described wide width part position does not in the longitudinal direction overlap each other.

In the flat cable that the invention described above relates to, also passable

Spacing between multiple described bonding conductor is in midway change.

In the flat cable that the invention described above relates to, also passable

The described dielectric film of described link and the same side is pasted with diaphragm, to cover the end being pasted onto that side in described cable main of described link.

In the flat cable that the invention described above relates to, also passable

Diaphragm is pasted with, with a part for the length direction end and described bonding conductor that cover described conductor in the described dielectric film end of described bonding conductor and the same side.

In the flat cable that the invention described above relates to, also passable

Described link is pasted with at the opposite side of the described arrangement plane of described conductor,

The diaphragm covering described conductor is pasted with in the side of the described arrangement plane of described conductor.

In the flat cable that the invention described above relates to, also passable

Described connection base material with described bonding conductor opposition side, be pasted with the strengthening membrane that rigidity is higher than described connection base material.

In the flat cable that the invention described above relates to, also passable

Described strengthening membrane has extension, and this extension extends to described cable main side compared with described bonding conductor and described connection base material,

Described extension is pasted onto on described dielectric film.

In the flat cable that the invention described above relates to,

Also described dielectric film and described bonding agent can be made to be transparent, described connection base material and described bonding agent also can be made to be transparent.

The cable main of the present invention of above-mentioned problem can be solved, it has with many conductors of plane arrangement and the dielectric film of fitting with the two sides of many described conductors, in the length direction end of this cable main, the one or both sides of described conductor are not covered by described dielectric film

The feature of this cable main is,

In the length direction end of described cable main,

Conductive paste is coated with in the region narrow with the width of described conductor on described conductor,

The region not applying described conductive paste on described conductor is attached with bonding agent.

In the cable main that the invention described above relates to, also can be configured to,

In the described length direction end of described cable main, in the side of arrangement plane, described conductor is covered by described dielectric film, and at the opposite side of arrangement plane, described conductor is covered by described dielectric film.

In the described length direction end of described cable main, in the both sides of arrangement plane, described conductor is not covered by described dielectric film.

In the cable main that the invention described above relates to, described dielectric film and described bonding agent also can be made to be transparent.

The feature that can solve the link of the present invention of above-mentioned problem is to have:

Many bonding conductors, it is with plane arrangement; And

Connect base material, it is pasted onto described bonding conductor from the side of arrangement plane via bond layer,

At the opposite side of the arrangement plane of described bonding conductor, using the regulation region of an end extension from described bonding conductor as bonding region, in described bonding region,

Described bonding conductor is coated with conductive paste, and its coating scope is narrower than the width of described bonding conductor,

The region not applying described conductive paste on described bonding conductor is attached with bonding agent.

In the link that the invention described above relates to, also can be configured to,

The length being coated with the region of described conductive paste is less than or equal to 1/2 of the length of described bonding region,

Between adjacent described bonding conductor, respective described conductive paste position does not in the longitudinal direction overlap each other.

In the link that the invention described above relates to,

Also the spacing between multiple described bonding conductor can be made to change in midway.

In the link that the invention described above relates to,

Also can at described connection base material with on the surface of described bonding conductor opposition side, be pasted with the strengthening membrane that rigidity is higher than described connection base material.

In the link that the invention described above relates to,

Also on described bonding conductor, described conductive paste can be coated with in the side of the length direction of described bonding conductor, not apply described conductive paste at opposite side,

In described strengthening membrane, on described bonding conductor, be coated with that side of described conductive paste relative to the length direction of described bonding conductor, there is the extension extended further compared with described bonding conductor.

In the link that the invention described above relates to, described connection base material and described bonding agent also can be made to be transparent.

Can solve the transfer member of the present invention of above-mentioned problem, it has: resin molding; Conductive paste, it is coated in multiple position along the 1st direction with the spacing of regulation on described resin molding; And bonding agent, it is coated in around the described conductive paste on described resin molding,

The feature of this transfer member is,

Along the described conductive paste that described 1st direction is adjacent, the position on 2nd direction orthogonal with described 1st direction is not overlapping,

Described adhesive applicating is in the part not applying described conductive paste.

The manufacture method of the flat cable of the present invention of above-mentioned problem can be solved, it is characterized in that,

Prepare cable main, this cable main is being fitted with dielectric film with the two sides of many conductors of plane arrangement, at the length direction two ends place of cable main, the one or both sides of described conductor is exposed,

Prepare on the bonding conductor identical with described number of conductors, be pasted with the link connecting base material,

In the region that described cable main is relative with described link, coating electrically conductive cream in the region narrower than the width of each described conductor,

To be connected via described conductive paste conducting with described bonding conductor by described conductor, by the mode that described dielectric film is connected via bonding agent with described connection base material, fitted in the length direction end of a part for described link and described cable main.

In the manufacture method of the flat cable related in the invention described above, also can be

Prepare cable main, this cable main is formed as in the length direction end of described cable main, and the described dielectric film of the side of the arrangement plane of described conductor does not cover described conductor,

In the region that described cable main is relative with described link,

Each described conductor applies described conductive paste,

Not applying on the described conductor of the part of described conductive paste on described conductor, applies described bonding agent.

Prepare described cable main, this cable main is formed as in the length direction end of described cable main, and the described dielectric film of the side of the arrangement plane of described conductor does not cover described conductor,

In the region that described cable main is relative with described link,

Each described bonding conductor applies described conductive paste,

Not applying on the described bonding conductor of the part of described conductive paste on described bonding conductor, applies described bonding agent.

Prepare described cable main, this cable main is formed as in the length direction end of described cable main, and the described dielectric film of the both sides of the arrangement plane of described conductor does not cover described conductor,

Supplement film is pasted in the side of the arrangement plane of described conductor,

Each described conductor applies described conductive paste,

Described conductive paste is coated on described bonding conductor, described adhesive applicating is not applied on the described bonding conductor of the part of described conductive paste on described bonding conductor, described link is pasted onto on the described length direction end of described cable main.

The length in the region of the described conductive paste of coating is set to 1/2 of the length being less than or equal to the described conductor exposed from the length direction end of described dielectric film, with between adjacent described conductor, the mode that the respective position of described conductive paste on described length direction offsets one from another, applies described conductive paste.

In the manufacture method of the flat cable related in the invention described above,

Also described bonding conductor can be made to have: wide width part, it has the width dimensions larger than described conductor; And narrow width part, it has the width dimensions less than described wide width part,

Between adjacent described conductor, described wide width part position does not in the longitudinal direction overlap each other.

Also can on the described dielectric film of described connection base material and the same side bonding protective film, to cover the end being pasted onto that side in described cable main of described link.

Also can at the described dielectric film end bonding protective film of described bonding conductor and the same side, with a part for the length direction end and described bonding conductor that cover described conductor.

Also can before the described conductive paste of coating, pasting rigidity with described bonding conductor opposition side and be connected the high strengthening membrane of base material than described at described connection base material.

In the manufacture method of the flat cable related in the invention described above, described dielectric film and described bonding agent also can be made to be transparent, described connection base material and described bonding agent also can be made to be transparent.

The effect of invention

According to the flat cable that the present invention relates to and manufacture method thereof, conductive paste is coated in the region narrower than the width of conductor, therefore, when being fitted in cable main by link, can not connect between adjacent conductive paste, can not be short-circuited between conductor.Therefore, can provide a kind of can well be connected with the flat cable as connecting object and the flat cable of the problem that can not be short-circuited.In addition, link of the present invention and transfer member are applicable to the manufacture of flat cable of the present invention.

Accompanying drawing explanation

Fig. 1 is the vertical view of the first execution mode representing flat cable.

Fig. 2 is the sectional view of the flat cable shown in Fig. 1.

Fig. 3 is the sectional view of the flat cable shown in Fig. 1 and the coupling part between connector.

Fig. 4 is the sectional elevation of one end of the flat cable shown in Fig. 1.

Fig. 5 is the sectional view of the flat cable that the variation of the first execution mode relates to.

Fig. 6 is the sectional view of the second execution mode representing flat cable.

Fig. 7 is the sectional view of the variation representing the second execution mode.

Fig. 8 is the oblique view representing link of the present invention.

Fig. 9 is the vertical view of the flat cable that variation of the present invention relates to.

Figure 10 is the vertical view of the link of the flat cable shown in Fig. 9.

Figure 11 is the vertical view of the flat cable that variation of the present invention relates to.

Figure 12 is the vertical view of the flat cable that variation of the present invention relates to.

Figure 13 is the vertical view of the flat cable shown in Figure 12.

Figure 14 is the oblique view of the manufacture method representing flat cable.

Figure 15 is the vertical view of the long flat cable manufacturing midway.

Figure 16 is the vertical view of the flat cable manufacturing midway.

Figure 17 is the sectional view of the flat cable manufacturing midway.

Figure 18 is the oblique view of other manufacture methods representing flat cable.

Figure 19 is the oblique view of the manufacture method representing long link.

Figure 20 is the vertical view representing the link manufacturing midway.

Figure 21 illustrates conductive paste and the bonding agent sectional elevation to the transfer printing process of flat cable.

Figure 22 illustrates conductive paste and the bonding agent sectional elevation to the transfer printing process of flat cable.

Figure 23 is the sectional elevation be described the method for attachment of link and flat cable.

Figure 24 is the sectional view be described the method for attachment of link and flat cable.

Figure 25 is the conductor paste at connecting portion place and the figure of bonding agent that represent connecting electrode and bonding conductor, and (a) and (b) is amplification view respectively.

Figure 26 is the sectional view of other manufacture methods representing flat cable.

Figure 27 is the sectional view of other manufacture methods representing flat cable.

Figure 28 is the sectional elevation of other manufacture methods representing flat cable.

Figure 29 is the sectional elevation of other manufacture methods representing flat cable.

Figure 30 is the sectional elevation of other manufacture methods representing flat cable.

Figure 31 is the sectional elevation of other manufacture methods representing flat cable.

Figure 32 is the sectional elevation of other manufacture methods representing flat cable.

Figure 33 is the sectional elevation of other manufacture methods representing flat cable.

Figure 34 is the oblique view representing link of the present invention.

Figure 35 is the oblique view representing link of the present invention.

Figure 36 is the oblique view of other manufacture methods representing flat cable.

Figure 37 is the oblique view of other manufacture methods representing flat cable.

Figure 38 is the oblique view of other manufacture methods representing flat cable.

Figure 39 is the vertical view representing the transfer member that other manufacture methods of flat cable relate to.

Figure 40 is the sectional elevation of other manufacture methods representing flat cable.

Embodiment

< flat cable >

< first execution mode >

Below, with reference to accompanying drawing, the example of the first execution mode of the flat cable that the present invention relates to is described.

As shown in Figures 1 and 2, such as, flat cable 1 has the many straps 2 formed by the rolled copper foil of copper (comprising the copper of plating) or copper alloy.With the arrangement of the arrangement pitches of regulation in the plane, strap 2 is pasted (lamination) dielectric film 3a, 3b to these straps 2.In addition, the example with 4 straps 2 shown in Figure 1, but the quantity of strap 2 can suitably change.Such as, strap 2 can be set to 20.In addition, the width dimensions of strap 2, gauge and arrangement pitches correspond to the settings such as required current value.

Dielectric film 3a, 3b have base material part and adhesive linkage, this base material part is formed by resins such as PETG, polyester, polyimides or polyphenylene sulfides, and this adhesive linkage is formed by the insulating properties bonding agent of polyesters bonding agent or difficult combustion polyvinyl chloride or difficult combustion polyolefin etc.Make the face of adhesive linkage relative with strap 2 and fit dielectric film 3a, 3b.Thus, the electric insulation between strap 2 is realized.The thickness of dielectric film 3a, 3b is preferably set to respectively and is more than or equal to 0.02mm and is less than or equal to 0.15mm.

As shown in Figure 1 to Figure 3, the both ends of the length direction of flat cable 1 form length direction end 11.

In the length direction end 11 of flat cable 1, strap 2 is covered by dielectric film 3a with the strap 2 of the side of the arrangement plane of plane arrangement (being below in figure 3), the opposite side of arrangement plane is not covered by dielectric film 3b, and the length direction end of strap 2 is exposed.The strap 2 exposed in this length direction end 11 becomes connecting electrode 12.

As shown in Figures 3 and 4, length direction end 11 is connected with link 21.This link 21 is such as made up of flat cable, flexible printed board or hard substrate etc., and have and connect base material 22 and multiple bonding conductor 23, this connection base material 22 is formed by insulating material, and the plurality of bonding conductor 23 is arranged on this connection base material 22.In the link 21 be made up of flat cable, be the structure of the polyesters bonding agent of about 0.03mm as connecting applied thickness on film that base material 22 PETG (PET) that to be such as used in by thickness be about 0.25mm forms.Bonding conductor 23 arranges with the width dimensions W1 roughly the same with the connecting electrode 12 of length direction end 11, identical spacing.These bonding conductors 23 are made up of the rolled copper foil of copper or copper alloy, implement gold-plated on its surface.

This link 21, by making its part overlapping with the length direction end 11 of flat cable 1, thus makes connecting electrode 12 and bonding conductor 23 by conductive paste 15 conducting, and in addition, to pass through bonding agent 16 bonding with being connected base material 22 for dielectric film 3a.

The mode that conductive paste 15 is less than the width dimensions W1 of connecting electrode 12 and bonding conductor 23 with the width dimensions W2 of the orientation of connecting electrode 12 and bonding conductor 23 applies.Thus, the end (shoulder 12a, 23a) of the Width of connecting electrode 12 or bonding conductor 23 does not have coating electrically conductive cream 15.A part for bonding agent 16 arrives at shoulder 12a or 23a not having coating electrically conductive cream 15.Thus, the part that connecting electrode 12 and bonding conductor 23 contact with conductive paste 15 becomes the scope being less than or equal to respective width dimensions.And, between connecting electrode 12 and between bonding conductor 23, be filled with bonding agent, can not be short-circuited via conductive paste 15 between connecting electrode 12 and between bonding conductor 23.

Conductive paste 15 is made up of conductive particle and bonding agent.Silver powder, carbon dust, copper powder, nickel powder or their mixed-powder etc. such as can be used as conductive particle.As the bonding agent forming this conductive paste 15, such as, can use any one of polyesters bonding agent, polyurethanes bonding agent, epoxies bonding agent etc.Especially, preferably adopt the silver paste containing flakey silver powder and spherical silver powder as conductive paste 15, the average grain diameter of this flakey silver powder is 0.5 to 5 μm, and this spherical silver powder is organic substance at surface application, and average grain diameter is less than or equal to 20nm.By making containing nano-Ag particles in silver paste, thus contact resistance is declined, in addition, concave-convex surface also reduces and connection area is increased.Therefore, the reliability of electrical connection improves.

In addition, the polyesters or polyamide-based hot-melt adhesive or thermosetting bonding agent with about 100 to 170 DEG C of melt temperatures is such as used as bonding agent 16.As this bonding agent 16, JELCONAD-HM6, “ East Ami that " ten ケミカ Le Co., Ltd. " can be adopted to make synthesizes Co., Ltd. " PES310S30 that makes, the said firm PES375S40 etc.

As shown in Figure 3, in the flat cable 1 that above-mentioned execution mode relates to, by the link 21 be connected with length direction end 11 is inserted in connector 27, makes to be housed in the connecting electrode 29 in the housing 28 of connector 27 and crimp with the bonding conductor 23 of link 21 and conducting.

And, in this flat cable 1, owing to implementing gold-plated to the bonding conductor 23 of link 21, therefore, even if be compressed stress from the connecting electrode 29 of connector 27, also following problem can not be there is, namely, acicular crystals (whisker) is produced on the surface of bonding conductor 23, and short circuit between adjacent bonding conductor 23.That is, excellent with the reliability of the electrical connection of connector 27.

(a) to (d) of Fig. 5 represents the variation of the flat cable that above-mentioned first execution mode relates to.In the variation shown in (a) of Fig. 5, diaphragm 14a, with across the length direction end 3b1 of dielectric film 3b and the mode of link 21, is pasted onto connection base material 22 side of link 21.That is, diaphragm 14a is to cover the mode of the end (for the left end of link 21 in (a) of Fig. 5) being pasted onto the link 21 of cable main 10 side, is pasted onto on the dielectric film 3b of link 21 and homonymy.Thus, prevent cable main 10 side of link 21 from peeling off.

In addition, diaphragm 14b, with across the length direction end 12a1 of connecting electrode 12 and the mode of link 21, is pasted onto the side, length direction end 11 of link 21.That is, in the mode of a part of the length direction end 12a1 and bonding conductor 23 that cover connecting electrode 12, bonding protective film 14b on the dielectric film end 3a of bonding conductor 23 and homonymy.Thus, prevent the length direction end of cable main 10 from peeling off.

In the variation shown in (b) of Fig. 5, in the mode that cable main 10 side of link 21 is overlapping with cable main 10, link 21 and cable main 10 are overlapped, under the state overlapped, link 21 and cable main 10 are fitted.Thus, link 21 can be pasted onto on the dielectric film 3b of cable main 10 securely, thus prevent link 21 from peeling off.

In the variation shown in (c) of Fig. 5, only make the connection base material 22 of link 21 extend to cable main 10 side, thus only make connection base material 22 overlapping with the dielectric film 3b of cable main 10.That is, bonding conductor 23 is not overlapping with the length direction end 3b1 of dielectric film 3b.Thus, compared with the example shown in (b) of Fig. 5, the region being not used in electrical connection of bonding conductor 23 can be reduced, thus flat cable 1 can be provided with low cost.

In the variation shown in (d) of Fig. 5, connect base material 22 with the opposition side of bonding conductor 23, be pasted with rigidity than connecting the high strengthening membrane 24 of base material 22.In this variation, end 22a, 23a of the connection base material 22 of link 21 and cable main 10 side of bonding conductor 23 are not overlapping with dielectric film 3b.Strengthening membrane 24 has extension 24a, and this extension 24a extends to the position overlapping with dielectric film 3b from the end 23a of cable main 10 side of bonding conductor 23, and is pasted onto on dielectric film 3b.

Thus, the bonding conductor 23 not used for electrical connection can be reduced, and prevent link 21 from peeling off.In addition, strengthening membrane 24 is with the length direction end 3b1 of higher rigid support dielectric film 3b and the boundary B being connected base material 22.By the higher strengthening membrane 24 of rigidity, can prevent in the bending of this boundary B place, thus prevent the fracture of connecting electrode 12.

< second execution mode >

In the above-described first embodiment, with length direction end 11 place at flat cable 1, the opposite side of the arrangement plane of connecting electrode 12 is not covered by dielectric film 3b, and side is covered as example by dielectric film 3a is illustrated, but the present invention is not limited to this example.Second execution mode described below is length direction end 11 place, and the both sides of the arrangement plane of connecting electrode 12 are not by the example of dielectric film 3a, 3b covering.In the following description, identical label is marked to identical parts and the description thereof will be omitted.

Fig. 6 represents the flat cable 1A that the second execution mode of the present invention relates to.In the length direction end 11 of cable main 10, do not have dielectric film 3a, 3b at strap 2 with the both sides of the arrangement plane of plane arrangement formation, strap 2 exposes.The strap 2 exposed in length direction end is called connecting electrode 12.

From the opposite side (being top in figure 6) of the arrangement plane of strap 2, link 21 is pasted onto the length direction end 11 of cable main 10 via bonding agent 16, and connecting electrode 12 connects via conductive paste 15 conducting.

In addition, the side (being below in figure 6) of the arrangement plane of connecting electrode 12 is provided with diaphragm 14c, and this diaphragm 14c protects connecting electrode 12 and bonding agent 16.This diaphragm 14c pastes in the mode of the connecting electrode 12 exposed across the length direction end from dielectric film 3a, 3b and dielectric film 3a.Bonding with connecting electrode 12 and the bonding agent 16 that is coated in around connecting electrode 12, connecting electrode 12 is protected.

In the present embodiment, also in the same manner as above-mentioned first execution mode, the mode that conductive paste 15 is less than the width dimensions of connecting electrode 12 and bonding conductor 23 with the width dimensions of the orientation of connecting electrode 12 and bonding conductor 23 applies.Thus, the end (shoulder) of the Width of connecting electrode 12 or bonding conductor 23 does not have coating electrically conductive cream 15.A part for bonding agent 16 arrives at the shoulder not having coating electrically conductive cream 15.Thus, the part that connecting electrode 12 and bonding conductor 23 contact with conductive paste 15 becomes the scope being less than or equal to respective width dimensions.And, between connecting electrode 12 and between bonding conductor 23, be filled with bonding agent, can not be short-circuited via conductive paste 15 between connecting electrode 12 and between bonding conductor 23.

In addition, the upper surface of link 21 namely connect base material 22 with bonding conductor 23 opposition side, be provided with strengthening membrane 24.The rigidity of this strengthening membrane 24 is higher than connecting base material 22.This strengthening membrane 24 has extension 24a, and this extension 24a extends to cable main 10 side compared with the end 21a1 of cable main 10 side of link 21.This extension 24a is overlapping with the dielectric film 3b of cable main 10.The extension 24a of this strengthening membrane 24 is fitted on dielectric film 3b.

In the present embodiment, the connecting electrode 12 of cable main 10 is outstanding from dielectric film 3a, 3b of a pair, and in this condition, connecting electrode 12 may rupture in the boundary member bending of exposing from dielectric film 3a, 3b.But the strengthening membrane 24 higher due to rigidity is pasted in the mode across this boundary member, therefore, it is possible to carry out support, connecting electrode 12 is not bent.Thus, the flat cable 1A of connecting electrode 12 not easy fracture can be provided.

(a) to (c) of Fig. 7 represents the variation of the flat cable that the second execution mode relates to.

In the variation shown in (a) of Fig. 7, substitute strengthening membrane 24 and by diaphragm 14c with across the length direction end 3b1 of dielectric film 3b and the mode of link 21, be pasted onto connection base material 22 side of link 21.Thus, prevent cable main 10 side of link 21 from peeling off.

In addition, diaphragm 14d, with across the length direction end 12a1 of connecting electrode 12 and the mode of link 21, is pasted onto bonding conductor 23 side of link 21.Thus, prevent the length direction end of cable main 10 from peeling off.This diaphragm 14d is with across bonding conductor 23 side of link 21, the pasting with the mode of link 21 opposition side and dielectric film 3a of connecting electrode 12 of exposing.

In the variation shown in (b) of Fig. 7, in the mode that cable main 10 side of link 21 is overlapping with cable main 10, link 21 is overlapped with cable main 10, under the state overlapped, link 21 and cable main 10 are fitted.Thus, link 21 can be pasted onto on the dielectric film 3b of cable main 10 securely, prevent link 21 from peeling off.

In the variation shown in (c) of Fig. 7, only make the connection base material 22 of link 21 extend to cable main 10 side, only make connection base material 22 overlapping with the dielectric film 3b of cable main 10.That is, bonding conductor 23 is not overlapping with the length direction end 3b1 of dielectric film 3b.Thus, compared with the example shown in (b) of Fig. 7, the region not used for electrical connection of bonding conductor 23 can be reduced, flat cable 1 can be provided with low cost.

In addition, in above-mentioned first execution mode and the second execution mode, paste the flat cable of link and integration with the length direction end being used in cable main, situation about being electrically connected with connector 27 is that example is illustrated, but the present invention is not limited thereto.

Such as, also following cable main 10 can be used, the length direction end of this cable main 10 is pasted onto on substrate etc., this cable main 10 is in length direction end, on the connecting electrode 12 exposed, in the region that width is narrower than connecting electrode 12, be coated with conductive paste, not having on this connecting electrode 12 is coated with bonding agent in the region of coating electrically conductive cream.That is, link 21 can be omitted from the first above-mentioned execution mode and the second execution mode, the cable main 10 of the state being coated with conductive paste 15 and bonding agent 16 is connected with substrate etc.

In this case, also can be described above, adopt the opposite side of arrangement plane of connecting electrode 12 to expose and structure that side is covered by dielectric film 3a, or the structure that the both sides of the arrangement plane of connecting electrode 12 are not covered by dielectric film.

Or can use link 21, the existing flat cable dielectric film by a pair being clipped existing many conductors is connected with connector 27.The oblique view of the link 21 used in this case shown in Figure 8.Link 21 has: many bonding conductors 23, and it is with plane arrangement; And connecting base material 22, it is pasted onto bonding conductor 23 from the side of arrangement plane.

In addition, at the opposite side of the arrangement plane of bonding conductor 23, the regulation region of an end side of bonding conductor 23 becomes bonding region A1.Another end side of bonding conductor 23 is not bonding region.In the same manner as the first above-mentioned execution mode and the second execution mode, in this bonding region A1, bonding conductor 23 is coated with conductive paste 15, its application width is narrower than the width of bonding conductor 23.In addition, the region without conductive paste 15 on bonding conductor 23 and connection base material 22 are coated with bonding agent.

< the 3rd execution mode >

In addition, in the respective embodiments described above, for link 21, there is the parallel to each other and situation with multiple bonding conductors 23 of one fixed width and be illustrated, but the present invention is not limited to these examples.As shown in FIG. 9 and 10, also can form the link 21 with following bonding conductor 23, this bonding conductor 23 has connecting conductor 231 and the wide width part 232 of linearity.

In the flat cable 1d that the 3rd execution mode shown in Fig. 9 and Figure 10 relates to, the connecting conductor 231 of link 21 has the width dimensions W4 roughly the same with the width dimensions W1 of connecting electrode 12, in addition, the spacing of its arrangement is also identical with the spacing of connecting electrode 12.That is, in the present example, the width dimensions of connecting conductor 231 is 0.2mm, and arrangement pitches is 0.3mm.

Wide width part 232 has the width dimensions W3 larger than the width dimensions W4 of connecting conductor 231.In addition, the position of each wide width part 232 is alternately arranged on the direction orthogonal with orientation, and thus, on connection base material 22, these wide width parts 232 are spaced to be configured with zigzag with gap.The connecting conductor 231 adjacent with the wide width part 232 of certain connecting conductor 231, its width attenuates in the part adjacent with this wide width part 232.

These connecting conductors 231 are configured in cable main 10 side, and wide width part 232 is configured in plug portion 21b.

As shown in Figure 9, in the flat cable 1d that above-mentioned execution mode relates to, by being inserted in connector 27 by link 21, thus the connecting electrode 29 be housed in the housing 28 of connector 27 crimps and conducting with the wide width part 232 of the bonding conductor 23 forming link 21.The connecting electrode 29 of connector 27, in the same manner as the wide width part 232 of bonding conductor 23, the direction orthogonal with orientation is alternately arranged and configures with zigzag each other.

And, when connecting link 21 is inserted connector 27, on the bonding conductor 23 of link 21, be formed as the wide width part 232 of the width dimensions W3 larger than strap 2, alternately stagger in the direction orthogonal with orientation and spacedly to configure with zigzag with gap.Therefore, even if the spacing of the strap 2 of flat cable 1d is narrower, also can reliably make the connecting electrode 29 of connector 27 contact with the wide width part 232 of bonding conductor 23 and conducting.

< the 4th execution mode >

And as shown in figure 11, link 21 also can be formed as the link of spacing change type, that is, formed according to the mode that spacing is changing from the midway of flat cable 1 side direction connector 27 of bonding conductor 23.Thus, even if when the arrangement pitches of the strap 2 of flat cable 1 is different from the spacing of the terminal of connector 27, flat cable 1 and connector 27 also can be made to be electrically connected.In addition, illustrate the example narrowed from flat cable 1 to link 21 spacing in fig. 11, but also can be configured to broaden from flat cable 1 to link 21 spacing.

< the 5th execution mode >

In addition, in the respective embodiments described above, between connecting electrode 12 and bonding conductor 23 equably the situation of coating electrically conductive cream 15 be illustrated, but the present invention is not limited to this example.

Figure 12 illustrates the cable main 10e not connecting link 21.In the present embodiment, in the length direction end 11 of flat cable 1e, connecting electrode 12 part showed out (not having the part of at least one of dielectric film 3a, 3b) is called non-insulated portion (bonding region) 11a.

As shown in figure 12, the length that conductive paste 15 everywhere applies is less than or equal to 1/2 of the length of the length direction of the connecting electrode 12 in non-insulated portion 11a.In addition, in non-insulated portion 11a, connecting electrode 12 place adjacent in orientation, is coated with conductive paste 15 observing nonoverlapping position from orientation.

In this example, in non-insulated portion 11a, adjacent conductive paste 15 with 1/2 length of the connecting electrode 12 in non-insulated portion 11a, and configures with zigzag by making the position of its length direction offset one from another.

And, in non-insulated portion 11a, be coated with bonding agent 16 there is no the part of coating electrically conductive cream 15.Namely, the orientation along connecting electrode 12 observe (from upper or from lower observation Figure 12), when scanning non-insulated portion 11a from one end of length direction to the other end, in the gamut of non-insulated portion 11a, be at least coated with conductive paste 15 at 1 connecting electrode 12 place.In other words, in the gamut of non-insulated portion 11a, when observing non-insulated portion 11a along the orientation of connecting electrode 12, there is no the position of uncoated conductive paste 15.

And as shown in figure 13, by making link 21 with overlapping and become flat cable 1e at the non-insulated portion 11a of cable main 10e, connecting electrode 12 is connected via conductive paste 15 conducting with bonding conductor 23.In addition, link 21 is bonding with non-insulated portion 11a by the bonding agent 16 around conductive paste 15.

In addition, in the present embodiment, also in the same manner as the respective embodiments described above, the mode that conductive paste 15 is less than the width dimensions of connecting electrode 12 and bonding conductor 23 with the wide cut size of the orientation of connecting electrode 12 and bonding conductor 23 applies.

Conductive paste 15 is compared with bonding agent 16, and bonding force is more weak.Therefore, in non-insulated portion 11a, if at each connecting electrode 12 place, coating electrically conductive cream 15 in the length range of its length direction, then when being fitted and connected parts 21, sufficient bonding force can not be obtained at the conducting connecting portion place of connecting electrode 12 and bonding conductor 23, thus poor attachment may occur.

In addition, when being fitted and connected parts 21, also it may be made to expand to side conductive paste 15 conquassation by connecting electrode 12 and bonding conductor 23, thus make the Contact of adjacent conductive paste 15 and short circuit.The short circuit caused by the contact between this conductive paste 15, is easy to when the arrangement pitches of strap 2 narrow and small (being such as less than or equal to 0.4mm) occur especially.

To this, in the cable main 10e and flat cable 1e of present embodiment, the coating length of conductive paste 15 is less than or equal to 1/2 of the length of connecting electrode 12.Thus, the bond area formed by bonding agent 16 between the length direction end 11 fully can guaranteeing link 21 and cable main 10, eliminates the problems such as poor attachment.In addition, the use amount of conductive paste 15 can be reduced.In addition, even if utilize less contact area, the conducting of the connecting electrode 12 and bonding conductor 23 realized by conductive paste 15 can also fully be guaranteed.

In addition, in adjacent connecting electrode 12, conductive paste 15 is coated in does not have overlapping position when orientation is observed, therefore, when being fitted and connected parts 21, even if make it expand to side conductive paste 15 conquassation by connecting electrode 12 and bonding conductor 23, the Contact of adjacent conductive paste 15 also can be eliminated and this problem of short circuit.

And, in non-insulated portion 11a, be coated with bonding agent 16 there is no the part of coating electrically conductive cream 15, in the one end from length direction within the scope of the other end, a part of connecting electrode 12 is coated with conductive paste 15, therefore, is marked off the area of application of bonding agent 16 by conductive paste 15.

Thus, in the cable main 10e of present embodiment, can be adhesively fixed link 21 securely, can under the state of short circuit that causes of the contact between can not occurring by conductive paste 15, make connecting electrode 12 and bonding conductor 23 conducting connect and form flat cable 1e.

The manufacture method > of < flat cable

Below, the method for the flat cable 1 manufacturing above-mentioned structure is described.

As shown in figure 14, send strap 2 from the multiple drums 30 being wound with long strap 2 respectively, and with the arrangement of the arrangement pitches of regulation at grade.And to fit long a pair dielectric film 3a, 3b at the positive and negative of the arrangement plane of these straps 2, form long flat cable 10a, this long dielectric film 3a, 3b send from drum 31, and carry out heating between warm-up mill 32 carrying out on one side crimping and fit.

Below, as shown in figure 15, in order to remove the remainder (being called ear) in the wide cut direction of dielectric film 3a and dielectric film 3b, the position shown in the chain-dotted line C1 of long flat cable 10a cuts off.Thus, the position that dielectric film 3a is connected along its length at the Width both ends in window portion 35 with dielectric film 3b is removed.

And, the position of long flat cable 10a shown in the chain-dotted line C2 by the central authorities by window portion 35 is cut off, as shown in FIG. 16 and 17, become the length of regulation, thus become cable main 10, wherein, at the both ends of length direction, the side of strap 2 exposed and form connecting electrode 12.

In addition, different from said method, also can by producing the long flat cable 10a not having window portion shown in Figure 18, and short flat cable 10b is made by being cut into desired length, by peeling off a part of dielectric film 3b from the end of short flat cable 10b, thus make cable main 10.

Then link 21 is manufactured.As shown in figure 19, send strap 61 from the multiple drums 62 be wound with as many long straps 61 of bonding conductor 23, and by it with the arrangement of the arrangement pitches of regulation at grade.

And, the isometric connection base material 22 of PETG (PET) film is pasted in the side of these straps 61, it is send from drum 63 that this length connects base material 22, and heats between warm-up mill 64, pastes while crimp to strap 61.And, implement gold-plated to the exposed surface being pasted onto the strap 61 connected on base material 22, make long link 21a, this long link 21a is wound on take up roll 66.Then, as shown in figure 20, utilize the cutters such as cutting machine to be cut off by specific length by long link 21a, thus make link 21.

Then, coating electrically conductive cream 15 on the connecting electrode 12 be made up of strap 2, adhesive-applying 16 on the dielectric film 3a at the both sides place of the Width of connecting electrode 12.In the following description, for by conductive paste 15 and bonding agent 16, by transfer printing, the example be coated on length direction end 11 is described.

First, as shown in figure 21, prepare transfer film 52, this transfer film 52 is configured on the transfer printing release film 51 formed by resins such as PETGs (PET), with the spacing coating electrically conductive cream 15 of regulation, further, bonding agent 16 is coated with at the sidepiece of the conductive paste 15 of release film 51.

Transfer film 52 is overlapped with the length direction end 11 of cable main 10, is placed on platform 54 across padded coaming 53, presses heating tool 55 gently from top and heat.Thus, pressed and conquassation flattening at the top of conductive paste 15 to connecting electrode 12, in addition, the bonding agent 16 of transfer film 52 side is softening and peel off from release film 51 by heat, and on the dielectric film 3a dropping down onto cable main 10 or on connecting electrode 12.

As mentioned above, after carrying out transfer printing pressing, cable main 10 is taken out, as shown in figure 22, the release film 51 of transfer film 52 is divested.So obtain following cable main 10, that is, conductive paste 15 is to be arranged on connecting electrode 12 to the mode outstanding with dielectric film 3a rightabout, and in addition, a part for bonding agent 16 is also applied on the shoulder 12a of connecting electrode 12.

Now, a face of connecting electrode 12 is covered by dielectric film 3a, therefore, if be configured in the mode making this dielectric film 3a become lower side, and coating electrically conductive cream 15 and bonding agent 16, then can prevent above-mentioned conductive paste 15 and bonding agent 16 from flowing down.

Then, link 21 is made to be connected with the length direction end 11 of cable main 10.This link 21 has the multiple bonding conductors 23 connecting base material 22 and be bonded on this connection base material 22.Bonding conductor 23 arranges with the roughly the same width dimensions of the connecting electrode 12 with cable main 10, identical spacing, and implements gold-plated.

As shown in Figure 23 and Figure 24, link 21 is overlapped with the length direction end 11 of cable main 10.The mode being connected conductor 23 covering according to the connecting electrode 12 exposed completely overlaps.Thus, connecting electrode 12 and bonding conductor 23 are by conductive paste 15 conducting, and in addition, dielectric film 3a is bonding by bonding agent 16 with connection base material 22.In addition, a part for bonding agent 16 arrives between connecting electrode 12 and bonding conductor 23, and thus, it is bonding that above-mentioned connecting electrode 12 and bonding conductor 23 pass through bonding agent 16.As mentioned above, by being pasted onto in cable main 10 by link 21, thus produce the flat cable 1 shown in Fig. 1 or Fig. 2 etc.

In addition, when the connection base material 22 of link 21 is transparent, when making cable main 10 be connected with link 21, preferably make link 21 to overlap from the mode of top covering cable main body 10.Thus, from upper side through transparent link 21, the position between bonding conductor 23 and connecting electrode 12 can be estimated or utilize electronic equipment automatic decision as view data, thus carrying out aligned in position.

When dielectric film 3a is transparent, when making cable main 10 be connected with link 21, cable main 10 is preferably made to overlap in the mode covering this link 21 from top.Thus, from the transparent dielectric film 3a of upper side through cable main 10, the position between connecting electrode 12 and bonding conductor 23 can be estimated or utilize electronic equipment automatic decision as view data, thus carrying out aligned in position.

In addition, transparent dielectric film 3a is pasted with transparent diaphragm 14, also through transparent diaphragm 14 and transparent dielectric film 3a, range estimation etc. can be carried out to the position between connecting electrode 12 and bonding conductor 23 and carries out aligned in position.In addition, also can after being connected to link 21, to dielectric film 3a bonding protective film 14.

When fitting in the length direction end 11 making link 21 with cable main 10, as shown in (a) of Figure 25, first, the bonding conductor 23 of link 21 contacts with the conductive paste 15 more given prominence to than bonding agent 16, thus guarantees the conducting of connecting electrode 12 and bonding conductor 23.And then if pressed the length direction end 11 of link 21 to cable main 10, then as shown in (b) of Figure 25, conductive paste 15 is connected electrode 12 and bonding conductor 23 and clamps and by conquassation.Thus, conductive paste 15 becomes the state contacted well relative to bonding conductor 23.

Now, the width dimensions W2 of conductive paste 15 is less than the width dimensions W1 (with reference to Fig. 4) of connecting electrode 12 and bonding conductor 23, therefore, even if conductive paste 15 is expanded to side by conquassation, also can be in the width range of connecting electrode 12 or bonding conductor 23, even if or be extruded a certain amount of also press-in by bonding agent 16 and adjacent connecting electrode 12 or bonding conductor 23 can not be arrived.That is, also can prevent conductive paste 15 from making this problem of short circuit between bonding conductor 23 between adjacent connecting electrode 12 or adjacent.

In more detail, the dielectric film 3a of cable main 10 is by basic unit 3a2 and to be arranged on bond layer 3a1 on basic unit 3a2 stacked and formed.When the length direction end 11 of cable main 10 is fitted and connected parts 21, entirety is heated.Bond layer 3a1 deliquescing by heating of the length direction end 11 of cable main 10, be subject to the power being fitted and connected parts 21, the connecting electrode 12 of length direction end 11 sinks to bond layer 3a1.Accordingly, bonding agent 16 rises between the connecting electrode 12 of length direction end 11, and bonding agent 16 enters between the bonding conductor 23 of link 21, and contacts with the connection base material 22 of link 21.Thus, link 21 is connected with cable main 10 well and the problem such as poor attachment or short circuit can not occur.

In addition, the manufacture method of above-mentioned link 21 is examples, also can manufacture by other manufacture methods.Such as, when utilizing flexible printed board or hard substrate manufactures link 21, forming the conductive pattern as bonding conductor 23 by etch processes etc., then, implementing gold-plated to conductive pattern.

According to above-mentioned manufacture method, can manufacture flat cable 1, it can suppress cost as far as possible and improve the reliability of electrical connection, does not exist and the problem such as the poor attachment of link 21.

In addition, in above-mentioned manufacture method, be illustrated for the situation of coating electrically conductive cream 15 and bonding agent 16 on the length direction end 11 of cable main 10, but the present invention is not limited to this example.Such as, as shown in figure 26, also can on link 21 coating electrically conductive cream 15 and bonding agent 16.For the method for coating electrically conductive cream 15 and bonding agent 16 on link 21, transfer printing can be used or directly print.

In addition, in the example of Figure 26, parts 21 are fitted and connected in the position of the boundary B across dielectric film 3b.Thus, as shown in (b) of Fig. 5, can strengthen near the connecting electrode 12 near the boundary B of easily bending.

In addition, as shown in figure 26, preferred conductive paste 15 is not applied to the end of flat cable 1 side, and the end 21a2 adhesive-applying 16 of flat cable 1 side at link 21.The end of flat cable 1 side of link 21 is bonded in the upper surface of the dielectric film 3b of flat cable 1 via bonding agent 16, link 21 can be made not easily to peel off from flat cable 1.

In addition, on link 21 coating electrically conductive cream 15 and bonding agent 16, if connect base material 22 transparent, then easily realize the aligned in position of bonding conductor 23 and connecting electrode 12, therefore preferably.

Make flat cable by above-mentioned manufacture method, carry out high-temperature test.Flat cable is placed 500 hours in 85 DEG C of thermostats, measures the change of its resistance value.Its result, even if through 500 hours, resistance value does not also rise.At high temperature make the part of laminating separated from one another if the length direction end 11 of cable main and link expose, then resistance value rises, but owing to not confirming the rising of this resistance value, even if therefore can confirm to expose in high temperature environments, link is still reliably fitted with cable main.

In addition, high-temperature high-humidity test is carried out for above-mentioned flat cable.By flat cable 60 DEG C, place 500 hours in relative humidity 95%RH, measure its resistance change.Its result, even if through 500 hours, resistance value rises and is less than 20m Ω.Can confirm thus, even if under being exposed to the environment of high-temperature high-humidity, still can maintain the state that link is reliably fitted with cable main.

In addition, thermal shock test has been carried out to above-mentioned flat cable.After flat cable is kept 0.5 hour with-40 DEG C, keep 0.5 hour with 85 DEG C immediately, repetitive cycling said process 500 times, measures its resistance change.Its result, even if repetitive cycling 500 times, the rising of resistance value is still less than 20m Ω.Can confirm thus, even if repeatedly apply thermal shock, also can maintain the state that link and cable main are fitted.

In addition, withstand voltage test between line has been carried out to above-mentioned flat cable.Apply 500V alternating voltage 1 minute to flat cable, but insulation breakdown does not occur.Can confirm thus, flat cable has resistance to pressure between sufficient line in use.

In the above-described embodiment, describe the manufacture method of the flat cable 1 of manufacture first execution mode, the structure of this flat cable 1 is, in length direction end 11, the side of the arrangement plane of strap 2 is covered by dielectric film 3a, and opposite side is not covered by dielectric film 3b., the manufacture method of the flat cable 1A of the second execution mode is described below, this flat cable 1A is configured to, and in length direction end 11, the both sides of the arrangement plane of strap 2 are not covered by dielectric film 3a, 3b.

Manufacture method of the present embodiment is roughly the same with the manufacture method of above-mentioned first execution mode, is described below to difference.

First, when manufacturing cable main 10, a part of dielectric film 3a, 3b of the both sides of length direction end 11 is peeled off.Then, as shown in Figure 27, Figure 28, supplement film 34 is pasted in the side (below of Figure 27) of arrangement plane.Supplement film 34 is to paste across whole of the downside of the connecting electrode 12 exposed and the mode of dielectric film 3a.Thus, the connecting electrode 12 exposed is fixed on supplement film 34.

Then, by length direction end 11 transfer printing to cable main 10A of conductive paste 15 and bonding agent 16.As shown in figure 29, prepare transfer film 52, this transfer film 52 is configured to, on the transfer printing release film 51 formed by resins such as PETGs (PET), with the spacing coating electrically conductive cream 15 of regulation, further, bonding agent 16 is coated with at the sidepiece of the conductive paste 15 of release film 51.

Transfer film 52 is overlapped with the length direction end 11 of cable main 10A, is placed on platform 54 across padded coaming 53, presses heating tool 55 gently from top and heat.Thus, pressed and conquassation flattening at the top of conductive paste 15 to connecting electrode 12, in addition, the bonding agent 16 of transfer film 52 side is softened by heat, and peels off from release film 51, on the supplement film 34 dropping down onto cable main 10A or on connecting electrode 12.

As mentioned above, after carrying out transfer printing pressing, cable main 10A is taken out, as shown in figure 30, the release film 51 of transfer film 52 is divested.

So, obtain cable main 10A, to consist of conductive paste 15 to be arranged on connecting electrode 12 to the mode outstanding with supplement film 34 rightabout, in addition, be configured with bonding agent 16, a part for bonding agent 16 is positioned on the shoulder 12a of connecting electrode 12.

Now, a face of connecting electrode 12 is pasted with supplement film 34, therefore, if the mode becoming lower side with this supplement film 34 configures, and coating electrically conductive cream 15 and bonding agent 16, then can prevent above-mentioned conductive paste 15 and bonding agent 16 from flowing down.

Then, link 21 is made to be connected with the length direction end 11 of cable main 10A.This link 21 has the multiple bonding conductors 23 connecting base material 22 and be bonded on this connection base material 22.Bonding conductor 23 arranges with the roughly the same width dimensions of the connecting electrode 12 with cable main 10A, identical spacing, and implements gold-plated.

As shown in FIG. 31 and 32, link 21 is made to overlap with the length direction end 11 of cable main 10A.The mode being connected conductor 23 covering with connecting electrode 12 completely overlaps.Connecting electrode 12 and bonding conductor 23 by conductive paste 15 conducting, in addition, supplement film 34 and be connected base material 22 to pass through bonding agent 16 bonding.In addition, a part for bonding agent 16 arrives between connecting electrode 12 and bonding conductor 23, above-mentioned connecting electrode 12 and bonding conductor 23 is passed through bonding agent 16 bonding.

In addition, when supplement film 34 is transparent, when making cable main 10A be connected with link 21, cable main 10A is preferably made to overlap in the mode covering this link 21 from top.Thus, from the transparent supplement film 34 of upper side through cable main 10A, the position of connecting electrode 12 and bonding conductor 23 can be estimated and carries out aligned in position.

When fitting in the length direction end 11 making link 21 to cable main 10A, as shown in (a) of Figure 33, first, the bonding conductor 23 of link 21 is contacted with the conductive paste 15 more given prominence to than bonding agent 16, guarantees the conducting of connecting electrode 12 and bonding conductor 23.And then if press link 21 to the length direction end 11 of cable main 10A, then as shown in (b) of Figure 33, conductive paste 15 is connected electrode 12 and bonding conductor 23 and clamps and by conquassation.Thus, conductive paste 15 becomes the state contacted well relative to bonding conductor 23.

Now, the width dimensions W2 of conductive paste 15 is less than the width dimensions W1 of connecting electrode 12 and bonding conductor 23, therefore, even if conductive paste 15 is expanded to side by conquassation, it is also in the width range of connecting electrode 12 or bonding conductor 23, or, even if be extruded a certain amount of also press-in by bonding agent 16 and adjacent connecting electrode 12 or bonding conductor 23 can not be arrived.That is, also can prevent conductive paste 15 from making the problem be short-circuited between bonding conductor 23 between adjacent connecting electrode 12 or adjacent.

In more detail, supplement film 34 is by basic unit 34a2 and to be arranged on bond layer 34a1 on basic unit 34a2 stacked and formed.When supplement film 34 is fitted with the length direction end 11 of cable main 10A, entirety is heated.The bond layer 34a1 of supplement film 34 is by heating deliquescing, and be subject to the power being fitted and connected parts 21, the connecting electrode 12 of length direction end 11 sinks to bond layer 34a1.Accordingly, bonding agent 16 rises between the connecting electrode 12 of length direction end 11, and bonding agent 16 enters between the bonding conductor 23 of link 21, and contacts with the connection base material 22 of link 21.Thus, cable main 10A can be connected with link 21 well and the problem such as poor attachment or short circuit can not occur.

In addition, owing to implementing gold-plated to the bonding conductor 23 of link 21, therefore, following flat cable can be manufactured, that is, as far as possible suppress cost and improve the reliability of electrical connection, and can not occur and the problem such as the poor attachment of link 21.In addition, on a face of the connecting electrode 12 be made up of the straight angle conductor 2 given prominence to from dielectric film 3a, 3b, paste supplement film 34, then coating electrically conductive cream 15 on connecting electrode 12, at the side adhesive-applying 16 of the connecting electrode 12 of supplement film 34, therefore, conductive paste 15 and bonding agent 16 can not flow down, can apply well, workability is better.

In addition, in above-mentioned manufacture method, to be illustrated at the length direction end 11 coating electrically conductive cream 15 of cable main 10A and the situation of bonding agent 16, but also can on link 21 coating electrically conductive cream 15 and bonding agent 16.

In addition, as shown in figure 18, after making the long flat cable 10a without window portion, be cut into desired length, making short flat cable 10b, by dielectric film 3a, the 3b at length direction both ends being peeled off, thus making cable main 10, by pasting link 21 in its length direction end 11, flat cable 1 can be made.

Thus, when the multiple flat cable that the quantity will making the different multiple flat cable of desired length or required strap 2 is different, can cut from common long flat cable 10a and make.Therefore, without the need to laying in the material of the multiple flat cable cutting into desired length in advance or the multiple flat cable with desired amt conductor.That is, the manufacture method of the flat cable 1 related to according to the present embodiment, as long as carry out cutting corresponding to required length or number of conductors.Therefore, without the need to laying in the material of multiple flat cable in advance, multiple flat cable can be provided with low cost.

Figure 34 to Figure 35 is the figure of the method that coating electrically conductive cream 15 and bonding agent 16 on link 21 are described.

First, as shown in figure 34, be cut into desired length link 21 with the connection base material 22 of bonding conductor 23 opposition side on paste strengthening membrane 24.Now, the mode that strengthening membrane 24 stretches out from the end of the length direction of bonding conductor 23 with a part is pasted.

Then, as shown in figure 35, at the upper surface coating electrically conductive cream 15 of the bonding conductor 23 of link 21, in addition, the region adhesive-applying 16 except conductive paste 15 in the upper surface of link 21.Now, as mentioned above, conductive paste 15 is narrower than the width dimensions of connecting electrode 12 and bonding conductor 23, and, higher than bonding agent 16.In addition, at upper surface (with the surface of bonding conductor 23 homonymy) the also adhesive-applying 16a of strengthening membrane 24.In addition, as shown in Figure 12 or Figure 13, also can coating electrically conductive cream 15 in the following manner, namely, the length in the region being coated with conductive paste 15 is made to be less than or equal to 1/2 of the length of non-insulated portion (bonding region) 11a of cable main 10, and between adjacent bonding conductor 23, the position of the length direction of each conductive paste 15 does not overlap each other.

As shown in figure 36, with connecting electrode 12 and bonding conductor 23 via the mode of conductive paste 15 conducting, the length direction end of the dielectric film 3b of cable main 10 is pasted onto on strengthening membrane 24 by bonding agent 16a.Thus, fit with link 21 in the length direction end 11 of cable main 10.

Thus, as shown in figure 36, strengthening membrane 24, is pasted onto on dielectric film 3b across the connection end 22a of cable main 10 side of base material 22 and the mode of the end of dielectric film 3b with extension 24a.

And then, as shown in figure 37, to be maintained connecting electrode 12 and bonding conductor 23 mode via the state of conductive paste 15 conducting by bonding agent 16, bonding protective film 14 on the connecting electrode 12 exposed, the surface of protection connecting electrode 12 and bonding agent 16.Thus, the flat cable 1 shown in Figure 38 is completed.

In this manufacture method similarly, the width dimensions W2 of conductive paste 15 applies the width dimensions W1 (with reference to Figure 35) for being less than connecting electrode 12 and bonding conductor 23, therefore, even if conductive paste 15 is expanded to side by conquassation, also be still in the width range of connecting electrode 12 or bonding conductor 23, even if or be extruded a certain amount of also press-in by bonding agent 16 and adjacent connecting electrode 12 or bonding conductor 23 can not be arrived.That is, also can prevent conductive paste 15 from making the problem of short circuit between bonding conductor 23 between adjacent connecting electrode 12 or adjacent.

In addition, according to this manufacture method, without the need to using transfer film etc., can directly coating electrically conductive cream 15 or bonding agent 16 on link 21, therefore, good work.

In addition, the manufacture method of the flat cable 1 related to according to the present embodiment, when pasting link 21, the extension 24a of strengthening membrane 24, with across the mode connecting the end 22a of cable main 10 side of base material 22 and the boundary B of the length direction end 3b1 of dielectric film 3b, is pasted onto the upper surface of dielectric film 3b.Therefore, not easily in boundary B bending, can prevent from bending in boundary B in the operation of bonding protective film 14.Therefore, can prevent the strap 2 of cable main 10 from rupturing in boundary B.

In addition, the manufacture method of the flat cable 1 related to according to the present embodiment, under the state of long link 21a, implements gold-plated to bonding conductor 23.Therefore, whisker can not be produced between strap 2 and bonding conductor 23, the flat cable 1 that reliability of electrical connection is high can be provided.

In addition, by implementing gold-plated to bonding conductor 23 under the state of long link 21a, thus can implement gold-plated with low cost.Such as, when implementing gold-plated to the strap 2 of cable main 10, very long without the need to gold-plated position due to what covered by dielectric film 3a, 3b, therefore, when manufacturing long flat cable 10a, it is unpractical for implementing gold-plated in the length range of strap 2.On the other hand, if only implement gold-plated to the connecting electrode 12 exposed from the length direction end 11 cutting into the cable main after monolithic 10, then can not implement gold-plated in this case continuously, thus manufacturing cost raise.

To this, the manufacture method of the flat cable 1 related to according to the present embodiment, continuously bonding conductor 23 is implemented with the state of long link 21a gold-plated after, cut into required length.Therefore, can implement gold-plated with low cost by processing continuously, and, can only implement gold-plated to the position needed.Thus, the flat cable 1 of high-quality can be provided with low cost.

In addition, gold-plated owing to implementing after bonding conductor 23 being pasted onto on connection base material 22, therefore, do not implement gold-plated to the part contacted with connection base material 22 in bonding conductor 23.Therefore, not gold-plated to not needing gold-plated position to implement, so flat cable 1 can be provided with low cost.In addition, situation wider between the conductors etc. can not by the hurtful situation of whisker, also can substitute gold-plated and implement bonding conductor 23 zinc-plated etc.

In addition, in the above-described embodiment, with after being pasted onto by strengthening membrane 24 on connection base material 22, situation about being pasted onto by link 21 on the length direction end 11 of cable main 10 is that example is illustrated, but the present invention is not limited to this example.Such as, also when being pasted onto on the length direction end 11 of cable main 10 by the link formed by connection base material 22 and bonding conductor 23, strengthening membrane 24 can be pasted in the mode of the dielectric film 3a across connection base material 22 and cable main 10 simultaneously.

In addition, on link 21 coating electrically conductive cream 15 and bonding agent 16, if make connection base material 22 transparent, then easily realize the aligned in position of bonding conductor 23 and connecting electrode 12, therefore preferably.

In the above description, be illustrated for the situation of the multiple bonding conductors 23 there is parallel and width fixing as link 21, but the present invention is not limited to these examples.As shown in Figure 10, also can adopt the link 21 with following bonding conductor 23, this bonding conductor 23 has connecting conductor 231 and the wide width part 232 of linearity.By being pasted onto on the length direction end 11 of cable main 10 by the link 21 shown in Figure 10, the flat cable 1d shown in Fig. 9 can be made.

In the above-described embodiment, be illustrated for the situation of adhesive-applying 16 around conductive paste 15, but as shown in figure 25, the dielectric film 3a of cable main 10 has the bond layer 3a1 for pasting connecting electrode 12.Therefore, when making link 21 fit with cable main 10, also can not adhesive-applying 16, and by bond layer 3a1 make dielectric film 3a and link 21 bonding.In this case similarly, the bonding agent forming bond layer 3a1 is enclosed in conductive paste 15 around, prevents from connecting between adjacent conductive paste 15.

Said structure also may be used for the structure shown in Figure 33.Supplement film 34 has the bond layer 34a1 for pasting connecting electrode 12.Therefore, when making link 21 fit with cable main 10, also can not adhesive-applying 16, and by bond layer 34a1 make supplement film 34 and link 21 bonding.In this case similarly, the bonding agent forming bond layer 34a1 is enclosed in conductive paste 15 around, prevents from connecting between adjacent conductive paste 15.

In addition, this structure also may be used for link 21.As shown in figure 40, the connection base material 22 of link 21 has bond layer 22a1 and base material 22a2, and this bond layer 22a1 is for pasting bonding conductor 23.Therefore, when making link 21 fit with cable main 10, also can not adhesive-applying 16, and by bond layer 22a1 make cable main 10 and link 21 bonding.In this case similarly, the bonding agent forming bond layer 22a1 is enclosed in conductive paste 15 around, prevents from connecting between adjacent conductive paste 15.

In the above-described embodiment, on connecting electrode 12 or bonding conductor 23 along its length equably the situation of coating electrically conductive cream 15 be illustrated, but the present invention is not limited thereto.Figure 39 represents that have will to the vertical view of connecting electrode 12 or the conductive paste 15 of bonding conductor 23 transfer printing and the transfer film 52 of bonding agent 16.

Transfer film 52 has resin molding 51, be coated in conductive paste 15 on this resin molding 51 and bonding agent 16.Conductive paste 15, on described resin molding 51, along 1st direction orthogonal with the length direction of connecting electrode 12 or bonding conductor 23, is coated in many places with the spacing specified.In addition, bonding agent is coated with around the conductive paste 15 on resin molding 51.The conductive paste 15 adjacent along the 1st direction applies to make the nonoverlapping mode in position in the 2nd direction orthogonal with the 1st direction.Bonding agent 16 is coated in the part not having coating electrically conductive cream 15.

Such as, if use this transfer film 52, at length direction end 11 coating electrically conductive cream 15 and the bonding agent 16 of cable main 10, then can make cable main 10 as shown in FIG. 12 and 13 and flat cable 1, they have that the position of the length direction of adjacent conductive paste 15 offsets one from another, with the conductive paste 15 of zigzag configuration.In addition, also can not transfer printing but by directly printing, as shown in Figure 12 or Figure 13, coating electrically conductive cream 15 in cable main 10.In addition, also can use transfer film 52 or make link 21 by directly printing.

Although in detail and describe the present invention with reference to specific execution mode, can apply various change or correction under the condition not departing from purport of the present invention and scope, this is apparent for a person skilled in the art.

The Japanese patent application (special Willing 2011-133865) that the application applied for based on June 16th, 2011, the Japanese patent application (special Willing 2011-133951) of application on June 16th, 2011, the Japanese patent application (special Willing 2011-134156) of application on June 16th, 2011, the Japanese patent application (special Willing 2011-134476) of application on June 16th, 2011, the Japanese patent application (special Willing 2012-125676) of application on June 1st, 2012, the Japanese patent application (special Willing 2012-125686) of application on June 1st, 2012, the Japanese patent application (special Willing 2012-132727) of application on June 12nd, 2012, its content is introduced in this application as reference.

Industrial applicibility

According to the flat cable that the present invention relates to and manufacture method thereof, conductive paste is coated in the region narrower than conductor width, therefore, when making link and cable main is fitted, can not makes to connect between adjacent conductive paste, and short circuit between conductor can not be made.Therefore, can provide and can be connected well with the flat cable as connecting object and the flat cable of the problem that can not be short-circuited.

Claims

1. a flat cable, is characterized in that, has:

2. flat cable according to claim 1, is characterized in that,

3. flat cable according to claim 1, is characterized in that,

4. flat cable according to any one of claim 1 to 3, is characterized in that,

5. flat cable according to any one of claim 1 to 3, is characterized in that,

6. flat cable according to any one of claim 1 to 3, is characterized in that,

Spacing between multiple described bonding conductor is in midway change.

7. flat cable according to any one of claim 1 to 3, is characterized in that,

8. flat cable according to any one of claim 1 to 3, is characterized in that,

9. flat cable according to claim 3, is characterized in that,

10. the flat cable according to any one of claims 1 to 3 and 9, is characterized in that,

11. flat cables according to claim 10, is characterized in that,

Described extension is pasted onto on described dielectric film.

12. flat cables according to any one of claim 1 to 3, is characterized in that,

Described dielectric film and described bonding agent are transparent.

13. flat cables according to any one of claim 1 to 3, is characterized in that,

Described connection base material and described bonding agent are transparent.

14. 1 kinds of cable main, it has with many conductors of plane arrangement and the dielectric film of fitting with the two sides of many described conductors, and in the length direction end of this cable main, the one or both sides of described conductor are covered by described dielectric film,

The feature of this cable main is,

In the length direction end of described cable main,

15. cable main according to claim 14, is characterized in that,

16. cable main according to claim 14, is characterized in that,

17., according to claim 14 to the cable main according to any one of 16, is characterized in that,

18., according to claim 14 to the cable main according to any one of 16, is characterized in that,

Described dielectric film and described bonding agent are transparent.

19. 1 kinds of links, is characterized in that having:

Many bonding conductors, it is with plane arrangement; And

20. links according to claim 19, is characterized in that,

21. links according to claim 19 or 20, is characterized in that,

22. links according to claim 19 or 20, is characterized in that,

Spacing between multiple described bonding conductor is in midway change.

23. links according to claim 19 or 20, is characterized in that,

At described connection base material with on the surface of described bonding conductor opposition side, be pasted with the strengthening membrane that rigidity is higher than described connection base material.

24. links according to claim 23, is characterized in that,

On described bonding conductor, be coated with described conductive paste in the side of the length direction of described bonding conductor, do not apply described conductive paste at opposite side,

25. links according to claim 19 or 20, is characterized in that,

Described connection base material and described bonding agent are transparent.

26. 1 kinds of transfer members, it is for the manufacture of the flat cable according to any one of claim 1 to 13,

The feature of this transfer member is to have: resin molding; Conductive paste, it is coated in multiple position along the 1st direction orthogonal with the length direction of the bonding conductor of described flat cable with the spacing specified on described resin molding; And bonding agent, it is coated in around the described conductive paste on described resin molding,

The manufacture method of 27. 1 kinds of flat cables, is characterized in that,

The manufacture method of 28. flat cables according to claim 27, is characterized in that,

In the region that described cable main is relative with described link,

Each described conductor applies described conductive paste,

The manufacture method of 29. flat cables according to claim 27, is characterized in that,

In the region that described cable main is relative with described link,

Each described bonding conductor applies described conductive paste,

The manufacture method of 30. flat cables according to claim 27, is characterized in that,

Each described conductor applies described conductive paste,

The manufacture method of 31. flat cables according to claim 27, is characterized in that,

The manufacture method of 32. flat cables according to any one of claim 27 to 31, is characterized in that,

The manufacture method of 33. flat cables according to any one of claim 27 to 31, is characterized in that,

The manufacture method of 34. flat cables according to any one of claim 27 to 31, is characterized in that,

Spacing between multiple described bonding conductor is in midway change.

The manufacture method of 35. flat cables according to any one of claim 27 to 31, is characterized in that,

Bonding protective film on the described dielectric film of described connection base material and the same side, to cover the end being pasted onto that side in described cable main of described link.

The manufacture method of 36. flat cables according to any one of claim 27 to 31, is characterized in that,

At the described dielectric film end bonding protective film of described bonding conductor and the same side, with a part for the length direction end and described bonding conductor that cover described conductor.

The manufacture method of 37. flat cables according to any one of claim 27 to 31, is characterized in that,

Before the described conductive paste of coating, pasting rigidity with described bonding conductor opposition side and be connected the high strengthening membrane of base material than described at described connection base material.

The manufacture method of 38. flat cables according to any one of claim 27 to 31, is characterized in that,

Described dielectric film and described bonding agent are transparent.

The manufacture method of 39. flat cables according to any one of claim 27 to 31, is characterized in that,

Described connection base material and described bonding agent are transparent.