CN110783726A

CN110783726A - Flexible connector and manufacturing method

Info

Publication number: CN110783726A
Application number: CN201811329645.4A
Authority: CN
Inventors: 苏陟
Original assignee: Guangzhou Fangbang Electronics Co Ltd
Current assignee: Guangzhou Fangbang Electronics Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2020-02-11

Abstract

The invention provides a flexible connector which comprises an insulator, wherein a plurality of first conductors are arranged on the surface of one side of the insulator, a plurality of second conductors are arranged on the surface of the other side of the insulator, a conductive medium for connecting the first conductors and the second conductors is further arranged on the insulator, protruding parts are arranged on the surfaces of the first conductors or/and the second conductors, and the surfaces of the protruding parts are regular or irregular arc-shaped surfaces. Compared with the prior art, the flexible connector has the advantages of good conductivity, long service life, high reliability, low manufacturing cost and repeated disassembly and assembly. The invention also provides a manufacturing method of the flexible connector, which has the advantages of simple operation, easy realization and the like.

Description

Flexible connector and manufacturing method

Technical Field

The invention relates to the technical field of electric connectors, in particular to a flexible connector and a manufacturing method thereof.

Background

In the electronic industry, the connection methods widely used between electronic components such as chips and circuit boards include solder Ball Grid Array (BGA), conductive adhesive connection, and the like. Although welding has the advantage of reliable connection, the welding also has the defect of incapability of repeated disassembly and assembly, and if the welding process has misoperation or the welding process has poor conduction and other problems, the welded electronic element only consumes more resources for rework or is directly scrapped, so that the material waste and the cost are increased; although the conductive adhesive connection is easier to implement and convenient for rework and maintenance compared with soldering, the conductive performance of the conductive adhesive is not stable enough due to some problems of the conductive adhesive itself and the influence of external factors such as weather, aging, stress strain and the like, so that the problem of circuit interruption or signal distortion is easy to occur between electronic elements connected by the conductive adhesive.

In order to avoid the defects of the connection method, a new connection method is adopted between the prior electronic components, namely connector connection, the connector mainly comprises an insulator and electric conductors arranged on two sides of the insulator, and the insulator is provided with a conductive medium for connecting the electric conductors on the two sides. When the connector is used, the connector is clamped between the two circuit boards and is fastened, and the electric conductor is attached to the welding disc on the circuit boards so as to realize circuit conduction. In order to ensure reliable electrical connection between the conductor and the pad, the conductor is usually provided with copper-plated resilient arms, but the provision of the resilient arms also brings new problems:

firstly, the manufacturing difficulty of the connector is improved, a plurality of manufacturing processes such as welding of the elastic arm, copper plating and the like are added, and meanwhile, the manufacturing cost of the connector is increased;

after the connector is disassembled and assembled for many times, the elastic arm is easy to generate fatigue damage and even directly breaks, and the service life of the connector is shortened;

thirdly, the copper plating on the surface of the elastic arm is easy to fall off along with the deformation of the elastic arm, so that the conductivity of the connector is influenced;

and fourthly, the bouncing amplitudes of all the elastic arms on the connector cannot be unified, so that the situation that part of the elastic arms are in contact with the circuit board and part of the elastic arms are not in contact with the circuit board easily occurs, and the electric conductivity of the connector is difficult to ensure.

Therefore, it is necessary to design a connector with excellent conductivity, durability and convenient assembly and disassembly of electronic components.

Disclosure of Invention

In order to solve the technical problems, the invention provides a flexible connector and a manufacturing method thereof, wherein the flexible connector is used for mounting and connecting a circuit board, has the advantages of repeated disassembly and assembly, good electric conductivity and the like, and is simple in manufacturing method and easy to realize.

Based on the above, the invention provides a flexible connector, which comprises an insulator, wherein a plurality of first conductors are arranged on one side surface of the insulator, a plurality of second conductors are arranged on the other side surface of the insulator, a conductive medium for connecting the first conductors and the second conductors is further arranged on the insulator, and protrusions are arranged on the surfaces of the first conductors or/and the second conductors, and the surfaces of the protrusions are regular or irregular arc-shaped surfaces.

Most preferably, two or more of the protrusions are provided on the surface of the first conductor or/and the second conductor, the shape of each of the protrusions is the same or different, the size of each of the protrusions is the same or different, and the two or more of the protrusions are continuously or discontinuously distributed on the surface of the first conductor or/and the second conductor.

Most preferably, the surface of the first conductor or/and the second conductor is a rough surface.

Most preferably, the surface of the first conductor or/and the second conductor is a flat surface.

Most preferably, the material of the protruding portion is one or a combination of more of copper, nickel, tin, lead, chromium, molybdenum, zinc, gold, and silver.

Most preferably, an adhesive film layer is arranged on at least one side surface of the insulator or/and the protruding part, and the protruding part is hidden in the adhesive film layer or penetrates through the adhesive film layer and is exposed.

Most preferably, the insulator is provided with a connection hole for connecting the first conductor and the second conductor, and the conductive medium is provided in the connection hole.

Most preferably, the conductive medium fills the connection hole, or the conductive medium is attached to a hole wall of the connection hole to form a conductive hole.

Most preferably, the first conductors are two or more and each of the first conductors is independent of each other, and the second conductors are two or more and each of the second conductors is independent of each other.

Most preferably, the number of the second conductors is equal to that of the first conductors, and each first conductor is connected with each second conductor in a one-to-one correspondence manner through the conductive medium in different connecting holes.

Most preferably, the number of the first conductors is greater than that of the second conductors, at least two of the first conductors are respectively connected with the same second conductor through the conductive media in different connecting holes, and the rest of the first conductors are respectively connected with the rest of the second conductors in a one-to-one correspondence manner through the conductive media in different connecting holes.

Most preferably, the number of the first conductors is less than that of the second conductors, at least two of the second conductors are respectively connected with the same first conductor through the conductive media in different connecting holes, and the rest of the second conductors are respectively connected with the rest of the first conductors in a one-to-one correspondence manner through the conductive media in different connecting holes.

In a most preferred embodiment, at least two of the first conductors are connected to the same second conductor through the conductive media in different connecting holes, and at least two of the second conductors are connected to the same first conductor through the conductive media in different connecting holes.

In a most preferred embodiment, at least two of the first conductors are connected to the same second conductor through the conductive media in different connecting holes, at least two of the second conductors are connected to the same first conductor through the conductive media in different connecting holes, and the rest of the first conductors are connected to the rest of the second conductors in a one-to-one correspondence manner through the conductive media in different connecting holes.

Most preferably, two or more connection holes are provided between the first conductor and the second conductor connected thereto.

Most preferably, the insulator is made of one or a combination of more of polyimide, thermoplastic polyimide, modified epoxy resin, modified acrylic resin, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyphenylene, polyvinyl chloride, polysulfone, polyphenylene sulfide, polyether ether ketone, polyphenylene oxide, polytetrafluoroethylene, a liquid crystal polymer and polyoxamide.

The invention also provides a manufacturing method of the flexible connector, which comprises the following steps:

manufacturing a flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

forming a conductive medium in the connecting hole to enable the connecting hole to have conductivity, and meanwhile, forming a convex part on the surface of the copper foil on at least one side of the flexible copper clad laminate;

and respectively etching two sides of the flexible copper clad laminate to form a first conductor and a second conductor.

In the manufacturing method of the flexible connector, the connecting holes for connecting the copper foils on two sides are formed on the flexible copper-clad plate in a mechanical drilling, laser drilling or stamping mode.

In the above method for manufacturing a flexible connector, forming a conductive medium in the connection hole and forming the protrusion on the surface of the copper foil on at least one side of the flexible copper clad laminate specifically include:

depositing a layer of thin conductive medium on the hole wall of the connecting hole through chemical reaction, and then increasing the thickness of the conductive medium on the hole wall and forming a conductive hole by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like, and meanwhile, forming the convex part on the surface of the copper foil on at least one side of the flexible copper clad laminate;

or a layer of thin conductive medium is deposited on the hole wall of the connecting hole through chemical reaction, and then one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like are adopted to fill the connecting hole with the conductive medium, and meanwhile, the convex part is formed on the surface of the copper foil on at least one side of the flexible copper clad laminate.

In the above method for manufacturing a flexible connector, after the first conductor and the second conductor are respectively formed by etching on both sides of the flexible copper clad laminate, the method further comprises the steps of: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising:

coating the adhesive film layer on a release film, and then transferring the adhesive film layer to at least one side surface of the flexible copper-clad plate through the release film in a pressing way;

or directly coating the adhesive film layer on at least one side surface of the flexible copper-clad plate.

The invention also provides a manufacturing method of the second flexible connector, which comprises the following steps:

manufacturing a flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

forming a conductive medium in the connection hole to make the connection hole conductive;

respectively etching two sides of the flexible copper clad laminate to form a first conductor and a second conductor;

a protrusion is formed on the surface of the first conductor or/and the second conductor.

In the above method for manufacturing a flexible connector, forming a conductive medium in the connection hole specifically includes:

depositing a layer of thin conductive medium on the hole wall of the connecting hole through chemical reaction, and then increasing the thickness of the conductive medium on the hole wall and forming a conductive hole by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like;

or depositing a layer of thin conductive medium on the hole wall of the connecting hole through chemical reaction, and filling the connecting hole with the conductive medium by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like.

In the above method for manufacturing the flexible connector, the protrusion is formed on the surface of the first conductor or/and the second conductor by one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition, and the like.

In the above method for manufacturing a flexible connector, after the protrusion is formed on the surface of the first conductor or/and the second conductor, the method further includes: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising:

The invention also provides a manufacturing method of the third flexible connector, which comprises the following steps:

manufacturing a flexible copper clad laminate;

forming a convex part on the surface of the copper foil on at least one side of the flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

In the manufacturing method of the flexible connector, the bulge is formed on the surface of the copper foil on at least one side of the flexible copper clad laminate by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like.

In the above method for manufacturing the flexible connector, after the first conductor and the second conductor are respectively formed by etching on the two sides of the flexible copper clad laminate, the method further comprises the following steps: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising:

The embodiment of the invention has the following beneficial effects:

the flexible connector provided by the embodiment of the invention comprises an insulator, wherein a plurality of first conductors are arranged on the surface of one side of the insulator, a plurality of second conductors are arranged on the surface of the other side of the insulator, a conductive medium for connecting the first conductors and the second conductors is further arranged on the insulator, the surfaces of the first conductors or/and the second conductors are/is provided with a protruding part, and the surface of the protruding part is a regular or irregular arc-shaped surface. Based on the structure, on one hand, the flexible connector provided by the embodiment of the invention realizes circuit conduction between the two circuit boards by clamping between the two circuit boards and respectively attaching the first electric conductor and the second electric conductor to the bonding pads on the two circuit boards, so that compared with the traditional welding and bonding, the flexible connector provided by the embodiment of the invention can realize repeated disassembly and assembly of the circuit boards, is convenient for maintenance of the circuit boards, reduces the manufacturing cost of electronic products, can also realize accurate contraposition connection of the two circuit boards, and improves the assembly precision. On the other hand, the convex part can increase the contact area between the conductor and the pad, so that the contact between the conductor and the pad is more sufficient, and the problems of circuit interruption or signal distortion and the like can be avoided; meanwhile, the bulge part can also increase the friction force between the conductor and the circuit board, so that the conductor and the pad are not easy to dislocate in the fastening process of the flexible connector, such as when a bolt is screwed, and the reliability of the electrical connection between the conductor and the pad is ensured; in addition, the protruding parts are small in size and very tightly arranged, so that the protruding parts are not easy to break and the deformation amplitude is uniform, and therefore, when the flexible connector provided by the embodiment of the invention is pressed with a circuit board, the problem of poor contact between a part of electric conductors and the welding pads cannot occur.

The invention also provides a manufacturing method of the flexible connector, which has the advantages of simple operation, easy realization and the like.

Drawings

FIG. 1 is a schematic cross-sectional view of a flexible connector according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of area I of FIG. 1;

FIG. 3 is a partial view of a first electrical conductor having a rough surface according to a first embodiment of the present invention;

fig. 4 is a schematic cross-sectional view illustrating a connection hole filled with a conductive medium according to a first embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a first electrical conductor and a second electrical conductor in a second electrical connection in accordance with an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a first electrical conductor and a second electrical conductor in a third electrical connection in accordance with a first embodiment of the invention;

FIG. 7 is a schematic cross-sectional view of a fourth electrical connection between the first electrical conductor and the second electrical conductor in accordance with a first embodiment of the invention;

FIG. 8 is a schematic cross-sectional view of a fifth electrical connection between a first electrical conductor and a second electrical conductor in accordance with one embodiment of the invention;

fig. 9 is a schematic cross-sectional view of a flexible connector according to a second embodiment of the present invention.

Description of reference numerals:

10. insulator, 11, first electric conductor, 12, second electric conductor, 13, conducting medium, 14, bulge, 15, conducting hole, 16, the glued membrane layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1, an embodiment of the present invention provides a flexible connector, which mainly includes an insulator 10, a plurality of first conductors 11 are disposed on a surface of one side of the insulator 10, a plurality of second conductors 12 are disposed on a surface of the other side of the insulator 10, a conductive medium 13 for connecting the first conductors 11 and the second conductors 12 is further disposed on the insulator 10, protrusions 14 are disposed on surfaces of the first conductors 11 and the second conductors 12, and a surface of the protrusion 14 is a regular or irregular arc surface.

Specifically, as shown in fig. 1, the surfaces of the first conductor 11 and the second conductor 12 are provided with a plurality of protrusions 14, the shape of each protrusion 14 may be the same or different, and the size of each protrusion 14 may be the same or different, that is, the radian, height, edge profile shape, and the like of each protrusion 14 are different. The plurality of protrusions 14 are continuously or discontinuously distributed on the surface of the first conductor 11 or/and the second conductor 12, and when the plurality of protrusions 14 are continuously distributed, the plurality of protrusions 14 form a regular, periodic corrugated pattern, or an irregular, disordered corrugated pattern. Of course, only one of them is listed here, and other combinations of similar shapes are also within the scope of protection of the present application, and are not listed here.

Based on the above structure, on one hand, the flexible connector provided by the embodiment of the invention realizes circuit conduction between the two circuit boards by clamping between the two circuit boards and respectively attaching the first conductor 11 and the second conductor 12 to the pads on the two circuit boards, so that compared with the traditional welding and bonding, the flexible connector provided by the embodiment of the invention can realize repeated disassembly and assembly of the circuit boards, is convenient for maintenance of the circuit boards, reduces the manufacturing cost of electronic products, can also realize accurate contraposition connection of the two circuit boards, and improves the assembly precision. On the other hand, the convex part 14 can increase the contact area between the first conductor 11 and the pad and between the second conductor 12 and the pad, so that the contact between the first conductor 11 and the pad and the contact between the second conductor 12 and the pad are more sufficient, and the problems of circuit interruption, signal distortion and the like can be avoided; meanwhile, the protruding part 14 can also increase the friction force between the first conductor 11 and the second conductor 12 and the circuit board, so that in the fastening process of the flexible connector, for example, when a bolt is screwed, the first conductor 11 and the second conductor 12 are not easy to be dislocated with the pad, and the reliability of the electrical connection between the first conductor 11 and the pad and the second conductor 12 is ensured; in addition, because the protruding portions 14 are small in size and very tightly arranged, the protruding portions 14 are not easy to break and have uniform deformation amplitude, so that when the flexible connector provided by the embodiment of the invention is pressed with a circuit board, the problem of poor contact between a part of electric conductors and the pads is avoided, and compared with a connector provided with elastic arms, the flexible connector provided by the embodiment of the invention has a better contact effect and more reliable electric conductivity.

Alternatively, as shown in fig. 2 to 3, the surfaces of the first conductor 11 and the second conductor 12 may be flat surfaces or rough surfaces. The flat surface and the rough surface referred to herein mean surfaces of the first conductor 11 and the second conductor 12 where the protruding portion 14 is located, that is, a reference surface where the protruding portion 14 is located, and are not a plane formed by two or more protruding portions 14. When the surfaces of the first conductor 11 and the second conductor 12 are rough surfaces, they include concave portions and convex portions, and the convex portions 14 are distributed over both the concave portions and the convex portions.

Optionally, the material of the protruding portion 14 is one or a combination of copper, nickel, lead, chromium, molybdenum, zinc, tin, gold, and silver. Specifically, the bump 14 may be composed of a single component, i.e., one of copper, nickel, tin, lead, chromium, molybdenum, zinc, gold, and silver, or may be composed of one of copper, nickel, tin, lead, chromium, molybdenum, zinc, gold, and silver as a main component, and then one or more of metals other than the main component may be formed on the surface of the main component by one or more of electroplating, electroless plating, physical vapor deposition, and chemical vapor deposition, thereby forming the bump 14 of a composite material. In the present embodiment, the projection 14 is preferably made of a composite material mainly made of copper, and one or more metals selected from nickel, tin, lead, chromium, molybdenum, zinc, gold, and silver are formed on the surface of copper, because the projection 14 made of copper alone is easily oxidized or worn, and the nickel, tin, gold, and silver formed on the surface of copper can improve the corrosion resistance and wear resistance of the projection 14, and further improve the electrical conductivity of the connector, thereby prolonging the service life of the connector.

As shown in fig. 1, the insulator 10 is provided with a connection hole for connecting the first conductor 11 and the second conductor 12, the conductive medium 13 is attached to the wall of the connection hole to form a conductive hole 15, and the conductive hole 15 may be a through hole, a buried hole, or a blind hole. Of course, as shown in fig. 4, during the forming process of the conductive medium 13, an operator may also choose to fill the entire connection hole with the conductive medium 13, that is, not form the conductive hole 15, so as to prevent the etching solution from entering the conductive hole 15 and protect the conductive medium 13 from being etched.

In the embodiment of the present invention, two or more first conductors 11 are provided, and the first conductors 11 are independent of each other, and similarly, two or more second conductors 12 are provided, and the second conductors 12 are independent of each other. Further, the following connection forms exist between the first conductor 11 and the second conductor 12:

first, as shown in fig. 1, the number of the second electric conductors 12 is equal to that of the first electric conductors 11, and each first electric conductor 11 is connected with each second electric conductor 12 in a one-to-one correspondence manner through the conductive medium 13 in different connecting holes;

secondly, as shown in fig. 5, the number of the first electric conductors 11 is greater than that of the second electric conductors 12, at least two first electric conductors 11 are respectively connected with the same second electric conductor 12 through the electric conduction mediums 13 in different connecting holes, and the rest first electric conductors 11 are respectively connected with the rest second electric conductors 12 through the electric conduction mediums 13 in different connecting holes in a one-to-one correspondence manner;

thirdly, as shown in fig. 6, the number of the first electric conductors 11 is less than that of the second electric conductors 12, at least two second electric conductors 12 are respectively connected with the same first electric conductor 11 through the electric conduction mediums 13 in different connecting holes, and the rest second electric conductors 12 are respectively connected with the rest first electric conductors 11 through the electric conduction mediums 13 in different connecting holes in a one-to-one correspondence manner;

fourthly, as shown in fig. 7, at least two first conductors 11 are connected with the same second conductor 12 through the conducting mediums 13 in different connecting holes, and at least two second conductors 12 are connected with the same first conductor 11 through the conducting mediums 13 in different connecting holes;

fifth, as shown in fig. 8, at least two first conductors 11 are connected to the same second conductor 12 through conductive media 13 in different connecting holes, at least two second conductors 13 are connected to the same first conductor 11 through conductive media in different connecting holes, and the rest first conductors 11 are connected to the rest second conductors 12 through conductive media 13 in different connecting holes in a one-to-one correspondence manner.

Optionally, no matter which type of the above-mentioned electrical connection is adopted between the first electrical conductor 11 and the second electrical conductor 12, two or more connection holes may be provided between the first electrical conductor 11 and the second electrical conductor 12 connected thereto, and a conductive medium 13 is provided in each connection hole to further improve the conductive performance of the flexible connector.

Optionally, the material of the insulator 10 is one or a combination of more of polyimide, thermoplastic polyimide, modified epoxy resin, modified acrylic resin, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyphenylene, polyvinyl chloride, polysulfone, polyphenylene sulfide, polyether ether ketone, polyphenylene oxide, polytetrafluoroethylene, liquid crystal polymer, and polyoxamide. Specifically, the insulator 10 may be a single component, i.e., one of the above-described various insulating materials, or may be a composite of any of the above-described plural insulating materials. Because of this, the insulator 10 has a certain amount of deformation, when the flexible connector is clamped between two circuit boards, the protruding portion 14 that is first in contact with the pad is compressed backward, so that the relatively lower protruding portion 14 can also be in contact with the pad to ensure a reliable electrical connection between the first conductor 11 and the second conductor 12 and the pad.

It should be noted that, in the embodiment of the present invention, according to different practical applications, only the surface of the first conductor 11 or the second conductor 12 may be provided with the protruding portion 14, and the technical effect produced by this scheme is consistent with the foregoing, and is not described herein again. In addition, the conductive medium 13 in the embodiment of the present invention is preferably copper, but other materials with good conductive performance, such as tin, silver, gold, graphite, copper paste, silver paste, tin paste, carbon nanotube, etc., may also be selected.

Example two

As shown in fig. 9, the flexible connector according to the embodiment of the present invention is different from the flexible connector according to the first embodiment in that the protruding portions 14 are provided with the adhesive film layer 16, and for each protruding portion 14, the protruding portion is hidden in the adhesive film layer 16 or penetrates through the adhesive film layer 16 and is exposed. Based on this, when the flexible connector is pressed and bonded with the circuit board, the flexible connector is more stably connected with the circuit board and is not easy to loosen and separate due to the bonding capability of the adhesive film layer 16; during the pressing and bonding process, the adhesive film layer 16 has fluidity, so that the bump 14 which has not penetrated the adhesive film layer 16 before all or individually penetrates the adhesive film layer 16 and contacts with the pad on the circuit board together with the bump 14 which has penetrated the adhesive film layer 16 before, thereby forming reliable electrical connection between the first conductor 11 or/and the second conductor 12 and the pad, and ensuring that the flexible connector still has good electrical conductivity during bonding. Of course, in order to simplify the process, the film layer 16 in the embodiment of the present invention is directly formed on the entire surface of the flexible connector, and therefore, the film layer 16 is formed on the surface of the insulator 10 on which the first conductor 11 or/and the second conductor 12 provided with the protruding portion 14 is/are located, except on the protruding portion 14.

Preferably, in the embodiment of the present invention, the adhesive film layer 16 is preferably a pressure sensitive adhesive or a thermoplastic adhesive, and of course, the adhesive film layer 16 may also be a thermosetting adhesive or the like according to different practical applications. Except for the differences, other specific structures of the embodiment of the present invention are the same as those of the first embodiment, and the corresponding principles and technical effects are also the same, which are not described herein again.

EXAMPLE III

The embodiment of the invention provides a manufacturing method of a flexible connector, which comprises the following steps:

firstly, manufacturing a flexible copper clad laminate;

step two, forming connecting holes for connecting copper foils on two sides on the flexible copper clad laminate by adopting a mechanical drilling, laser drilling or stamping mode;

forming a conductive medium 13 in the connecting hole to enable the connecting hole to have conductivity, and meanwhile, forming a convex part 14 on the surface of the copper foil on at least one side of the flexible copper clad laminate;

etching the surfaces of the two sides of the flexible copper clad laminate respectively to form a first conductor 11 and a second conductor 12;

and step five, forming an adhesive film layer 16 on at least one side surface of the flexible copper-clad plate.

In the third step provided by the embodiment of the present invention, the forming of the conductive medium 13 in the connection hole and the forming of the protruding portion 14 on the surface of the copper foil on at least one side of the flexible copper clad laminate specifically include:

depositing a layer of thin conductive medium 13 on the hole wall of the connecting hole through chemical reaction, and then increasing the thickness of the conductive medium 13 on the hole wall and forming a conductive hole 15 by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like, and meanwhile, forming a convex part 14 on the surface of the copper foil on at least one side of the flexible copper clad laminate;

or firstly depositing a layer of thin conductive medium 13 on the hole wall of the connecting hole through chemical reaction, and then filling the connecting hole with the conductive medium 13 by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like, and meanwhile, forming a convex part 14 on the surface of the copper foil on at least one side of the flexible copper clad laminate.

In the fifth step provided by the embodiment of the present invention, the forming of the adhesive film layer 16 on at least one side surface of the flexible copper clad laminate specifically includes:

coating an adhesive film layer 16 on a release film, and then transferring the adhesive film layer 16 to at least one side surface of the flexible copper-clad plate through the release film in a pressing manner;

or directly coating the adhesive film layer 16 on at least one side surface of the flexible copper-clad plate.

Example four

firstly, manufacturing a flexible copper clad laminate;

step three, forming a conductive medium 13 in the connecting hole to enable the connecting hole to have conductivity;

step four, etching the two sides of the flexible copper clad laminate respectively to form a first conductor 11 and a second conductor 12, wherein the specific method is consistent with the description in the third embodiment, and the description is omitted;

step five, forming the protruding parts 14 on the surfaces of the first conductor 11 or/and the second conductor 12 by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like;

and step six, forming an adhesive film layer 16 on at least one side surface of the flexible copper-clad plate, wherein the specific method is consistent with the description in the third embodiment, and the description is omitted here.

In the third step provided in the embodiment of the present invention, the forming of the conductive medium 13 in the connection hole specifically includes:

depositing a layer of thin conductive medium 13 on the hole wall of the connecting hole through chemical reaction, and then increasing the thickness of the conductive medium 13 on the hole wall and forming a conductive hole 15 by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like;

or firstly depositing a layer of thin conductive medium 13 on the hole wall of the connecting hole through chemical reaction, and then filling the connecting hole with the conductive medium 13 by adopting one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like.

EXAMPLE five

firstly, manufacturing a flexible copper clad laminate;

forming a convex part 14 on the surface of the copper foil on at least one side of the flexible copper clad laminate by adopting one or more of the modes of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition and the like;

step three, forming connecting holes for connecting copper foils on two sides on the flexible copper clad laminate by adopting a mechanical drilling, laser drilling or stamping mode;

forming a conductive medium 13 in the connecting hole to make the connecting hole have conductivity;

step five, etching the surfaces of the two sides of the flexible copper-clad plate respectively to form a first conductor 11 and a second conductor 12, wherein the specific method is consistent with the description in the third embodiment, and the description is omitted;

In the fourth step provided in the embodiment of the present invention, the forming of the conductive medium 13 in the connection hole specifically includes:

In summary, the present invention provides a flexible connector, which includes an insulator 10, wherein a plurality of first conductors 11 are disposed on a surface of one side of the insulator 10, a plurality of second conductors 12 are disposed on a surface of the other side of the insulator 10, a conductive medium 13 for connecting the first conductors 11 and the second conductors 12 is further disposed on the insulator 10, protrusions 14 are disposed on surfaces of the first conductors 11 or/and the second conductors 12, and surfaces of the protrusions 14 are regular or irregular arc surfaces. Compared with the prior art, the flexible connector has the advantages of good conductivity, long service life, high reliability, low manufacturing cost and repeated disassembly and assembly.

In addition, the invention also provides a manufacturing method of the flexible connector, which has the advantages of simple operation, easy realization and the like.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

The foregoing is directed to the preferred embodiment of the present invention, and it is understood that various changes and modifications may be made by one skilled in the art without departing from the spirit of the invention, and it is intended that such changes and modifications be considered as within the scope of the invention.

Claims

1. The flexible connector is characterized by comprising an insulator, wherein a plurality of first conductors are arranged on one side surface of the insulator, a plurality of second conductors are arranged on the other side surface of the insulator, a conductive medium for connecting the first conductors and the second conductors is further arranged on the insulator, protrusions are arranged on the surfaces of the first conductors or/and the second conductors, and the surfaces of the protrusions are regular or irregular arc-shaped surfaces.

2. The flexible connector according to claim 1, wherein the surface of the first conductor or/and the second conductor is provided with two or more protrusions, the shape of each protrusion is the same or different, the size of each protrusion is the same or different, and the two or more protrusions are continuously or discontinuously distributed on the surface of the first conductor or/and the second conductor.

3. The flexible connector of claim 1, wherein the surface of the first electrical conductor or/and the second electrical conductor is roughened.

4. The flexible connector of claim 1, wherein a surface of the first electrical conductor or/and the second electrical conductor is a flat surface.

5. The flexible connector of claim 1, wherein the material of the protrusion is one or more of copper, nickel, tin, lead, chromium, molybdenum, zinc, gold, and silver.

6. The flexible connector of claim 1, wherein an adhesive film layer is disposed on at least one side surface of the insulator and/or the protrusion, and the protrusion is hidden in the adhesive film layer or penetrates through the adhesive film layer and is exposed.

7. The flexible connector according to claim 1, wherein a connection hole for connecting the first conductor and the second conductor is provided in the insulator, and the conductive medium is provided in the connection hole.

8. The flexible connector according to claim 7, wherein the conductive medium fills the connection hole, or adheres to a hole wall of the connection hole and forms a conductive hole.

9. The flexible connector according to claim 7, wherein the first conductors are provided in two or more numbers and each of the first conductors is independent of each other, and the second conductors are provided in two or more numbers and each of the second conductors is independent of each other.

10. The flexible connector according to claim 9, wherein the number of the second conductors is equal to the number of the first conductors, and each of the first conductors is connected to each of the second conductors in a one-to-one correspondence via the conductive medium in the different connecting holes.

11. The flexible connector according to claim 9, wherein the number of the first conductors is greater than the number of the second conductors, at least two of the first conductors are connected to the same second conductor through the conductive media in different ones of the connecting holes, and the remaining first conductors are connected to the remaining second conductors in a one-to-one correspondence through the conductive media in different ones of the connecting holes.

12. The flexible connector according to claim 9, wherein the number of the first conductors is smaller than the number of the second conductors, at least two of the second conductors are connected to the same first conductor through the conductive media in different ones of the connecting holes, and the remaining second conductors are connected to the remaining first conductors in a one-to-one correspondence through the conductive media in different ones of the connecting holes.

13. The flexible connector according to claim 9, wherein at least two of the first conductors are connected to the same second conductor through the conductive media in different ones of the connecting holes, and at least two of the second conductors are connected to the same first conductor through the conductive media in different ones of the connecting holes.

14. The flexible connector according to claim 9, wherein at least two of the first conductors are connected to the same second conductor through the conductive media in different ones of the connecting holes, at least two of the second conductors are connected to the same first conductor through the conductive media in different ones of the connecting holes, and the remaining first conductors are connected to the remaining second conductors in a one-to-one correspondence through the conductive media in different ones of the connecting holes.

15. The flexible connector according to claim 7, wherein two or more connection holes are provided between the first conductor and the second conductor connected thereto.

16. The flexible connector of claim 1, wherein the insulator is made of one or more of polyimide, thermoplastic polyimide, modified epoxy resin, modified acrylic resin, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polystyrene, polyvinyl chloride, polysulfone, polyphenylene sulfide, polyether ether ketone, polyphenylene oxide, polytetrafluoroethylene, liquid crystal polymer, and polyoxamide.

17. A method for manufacturing a flexible connector is characterized by comprising the following steps:

manufacturing a flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

18. The method for manufacturing the flexible connector according to claim 17, wherein the connection holes for connecting the copper foils on two sides are formed on the flexible copper clad laminate by adopting a mechanical drilling, laser drilling or stamping mode.

19. The method for manufacturing the flexible connector according to claim 17, wherein the steps of forming the conductive medium in the connection hole and forming the protrusion on the surface of the copper foil on at least one side of the flexible copper clad laminate specifically comprise:

20. The method for manufacturing the flexible connector according to claim 17, wherein after the first conductor and the second conductor are respectively formed by etching on two sides of the flexible copper clad laminate, the method further comprises the following steps: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising:

21. A method for manufacturing a flexible connector is characterized by comprising the following steps:

manufacturing a flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

22. The method for manufacturing the flexible connector according to claim 21, wherein the connection holes for connecting the copper foils on both sides are formed on the flexible copper clad laminate by means of mechanical drilling, laser drilling or stamping.

23. The method for manufacturing a flexible connector according to claim 21, wherein the forming of the conductive medium in the connection hole specifically includes:

24. The method of claim 21, wherein the protrusions are formed on the surface of the first conductor and/or the second conductor by one or more of electroplating, electroless plating, physical vapor deposition, chemical vapor deposition, and the like.

25. The method of manufacturing a flexible connector according to claim 21, further comprising, after forming the protrusion on the surface of the first conductor or/and the second conductor, the steps of: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising:

26. A method for manufacturing a flexible connector is characterized by comprising the following steps:

manufacturing a flexible copper clad laminate;

forming a connecting hole on the flexible copper clad laminate;

27. The method for manufacturing a flexible connector according to claim 26, wherein the protrusion is formed on the surface of the copper foil on at least one side of the flexible copper clad laminate by one or more of electroplating, chemical plating, physical vapor deposition, chemical vapor deposition, and the like.

28. The method for manufacturing the flexible connector according to claim 26, wherein the connection holes for connecting the copper foils on two sides are formed on the flexible copper clad laminate by means of mechanical drilling, laser drilling or stamping.

29. The method for manufacturing a flexible connector according to claim 26, wherein the forming of the conductive medium in the connection hole specifically includes:

30. The method for manufacturing the flexible connector according to claim 26, wherein after the first conductor and the second conductor are respectively formed by etching on two sides of the flexible copper clad laminate, the method further comprises the following steps: forming an adhesive film layer on at least one side surface of the flexible copper clad laminate, and specifically comprising: