TWI550980B - Connection connector and method of manufacturing the same - Google Patents

Description

Connector for connection and method of manufacturing connector for connection

The present invention relates to a connector for connection and a method of manufacturing the connector for the connection, and more particularly, to a connection for a conductive particle to be densely arranged in a thickness direction of the connector for connection. And a method of manufacturing the connector for the connection.

In general, a stable electrical connection between the device under test and the test equipment is necessary to test the electrical characteristics of the device under test. A connector for connection is generally used as a device for connection between a device to be tested and a test device.

A connector is used to connect the terminals of the device to be tested to the pads of the test device to allow electrical signals to be exchanged between the device and the test device. For this purpose, the connector for connection may comprise an anisotropic sheet or a spring-loaded thimble as a connecting means. The anisotropic sheet may comprise an elastic conductive portion for connection to a terminal of the device to be tested, and the spring-loaded thimble may comprise a smooth connection to cushion the device to be tested and the test device and to cushion mechanical collisions that may occur during the connection Spring. Therefore, such anisotropic sheets or spring-loaded thimbles are used in most test sockets.

In the case of an anisotropic sheet, due to the device to be tested that requires electrical connection Frequent contact of the terminals, the upper end of the elastic conductive portion may be easily damaged. That is, in the conductive portion of the form having a large amount of conductive particles disposed in the soft rubber, the soft rubber may be easily damaged due to frequent contact with the terminal of the device to be tested which is formed of a metal material. Therefore, the conductive particles disposed in the conductive portion may drift away from the conductive portion, and thus, the conductivity of the conductive portion may decrease.

In order to solve the problem, the connector device 10 for anisotropic conductive connection is disclosed in Korean Patent Publication No. 10-2006-0013429, which is described in detail with reference to FIG. Referring to Fig. 1, an anisotropic conductive connection connector device 10 includes a rectangular anisotropic conductive layer 10A, a sheet-type connection connector 20 formed on a surface of an anisotropic conductive layer 10A, and has a rectangular plate shape and The support member 30 supporting the anisotropic conductive layer 10A. The anisotropic conductive layer 10A of the connector device 10 for anisotropic conductive connection includes a plurality of conductive path forming portions 11 each extending in the thickness direction thereof, and an insulating portion for insulating the plurality of conductive path forming portions 11 from each other 14. In Fig. 1, a plurality of conductive path forming portions 11 are arranged at regular intervals in accordance with lattice point positions. In addition, the anisotropic conductive layer 10A is formed of an insulating elastic polymer material, and each of the conductive path forming portions 11 contains conductive particles P having magnetic properties and oriented in a line direction in the thickness direction of the anisotropic conductive layer 10A. However, the insulating portion 14 does not contain or hardly contains conductive particles at all. In FIG. 1, the surface of the central portion of the anisotropic conductive layer 10A protrudes from the peripheral edge portion. An effective conductive path forming portion 12 (which is electrically connected to a connection target electrode such as a test electrode of a circuit device to be tested) is formed in a central portion of the anisotropic conductive layer 10A of each of the conductive path forming portions 11. In addition, the ineffective conductive path forming portion 13 (which is not electrically connected to the connection target electrode) is formed on the anisotropic conductive layer 10A. In the peripheral edge section. The effective conductive path forming portion 12 is disposed in a pattern corresponding to the pattern of the connection target electrodes. The insulating portion 14 is integrally formed to surround the individual conductive path forming portions 11. Therefore, all of the conductive path forming portions 11 are insulated from each other by the insulating portion 14. The sheet-type connecting connector 20 has a flexible insulating sheet 21, and a plurality of electrode structures 22 formed of metal and extending in the thickness direction of the insulating sheet 21 are disposed to be separated from each other in the surface direction of the insulating sheet 21 A pattern corresponding to a pattern connecting the target electrodes is formed.

A method of manufacturing the anisotropic conductive connection connector device 10 will be described with reference to FIGS. 2 and 3. In detail, as illustrated in FIG. 2, the sheet-type connecting connector 20 is placed in a mold, and the conductive particles P are dispersed and filled in the molding material layer 19. Next, by operating an electromagnet (not shown) disposed on the upper surface of the ferromagnetic substrate 51 and the lower surface of the ferromagnetic substrate 56 in the lower mold 55 disposed in the upper mold 50, a parallel magnetic field having an intensity distribution ( That is, a parallel magnetic field having a large strength is applied to the ferromagnetic layer 52 of the upper mold 50 and the ferromagnetic layer 57 of the lower mold 55 in the thickness direction of the molding material layer 19 (which corresponds to the ferromagnetic layer of the upper mold 50) 52) between. As a result, as shown in FIG. 3, the conductive particles dispersed in the molding material layer 19 can be concentrated on each of the conductive path forming portions 11 (which are disposed in the ferromagnetic layer 52 of the upper mold 50 and the ferromagnetic layer of the lower mold 55). Between 57) is formed in the region where it is and can be oriented in a straight line in the thickness direction of the molding material layer 19.

Next, by hardening the molding material layer 19, an anisotropic conductive layer 10A (which includes the conductive path forming portion 11 and the insulating portion 14) is formed, and the sheet-type connecting connector 20 is integrally attached to the anisotropy On one surface of the conductive layer 10A, and the peripheral edge portion of the anisotropic conductive layer 10A is connected to the support member 30 and The support member 30 is supported. In the conductive path forming portion 11, the conductive particles are densely contained in the elastic polymer material while being linearly oriented in the thickness direction of the anisotropic conductive layer 10A. The insulating portion 14 is formed to surround each of the conductive path forming portions 11 and is formed of an insulating elastic polymer material in which conductive particles are not present at all or hardly exist.

In the conventional anisotropic conductive connection connector device as illustrated in FIG. 1, when the electrode structure is formed of a nickel material, a magnetic field is applied to the molding in a state where the sheet-type connection connector is placed in the mold. In the case of the material layer 19, the electrode structure acts as a ferromagnetic substance, thereby affecting the configuration of the conductive particles. In this case, since the lower surface of each of the electrode structures has a planar shape, it is not easy to dispose the conductive particles.

When the spacing between each two electrode structures is relatively wide, there is no problem. In order to produce a product having a relatively narrow spacing between every two electrode structures, the conductive particles must be arranged in a substantially cylindrical form in the vertical direction. However, when the lower surface of each of the electrode structures has a planar shape, the magnetic force formed in the vertical direction may not perform the function of correcting the conductive particles, and thus, as shown in FIG. 4, each of the two conductive layers is connected The bridge 11' of the path forming portion 11 can be formed between every two conductive path forming portions 11. The bridge 11' is formed of conductive particles that drift away from the conductive path forming portion 11.

When the bridge 11' is produced, the reliability of the electrical test may be degraded.

The inventive concept provides a connector for connection, which can be used in the manufacturing process The generation of a bridge connecting adjacent conductive portions is reduced.

The inventive concept also provides a method of manufacturing the connector for connection.

According to an aspect of the inventive concept, a connector for connection is provided between a device to be tested and a test device that are required to be electrically connected to each other and a terminal of the device is electrically connected to a lining of the test device, respectively. a pad, the connector for connection comprising: a connection sheet including a sheet member and a conductive electrode, wherein the sheet member has a plurality of through holes formed at positions corresponding to the terminals of the device and is flexible And an insulating material is formed, and the conductive electrode is combined with the plurality of through holes and protrudes upward from an upper surface of the sheet member and protrudes downward from a lower surface of the sheet member; and includes a conductive portion and An anisotropic sheet of an insulating portion, wherein the conductive portion is disposed under the conductive electrode of the connection sheet, contacts the conductive electrode and has conductivity in a thickness direction of the anisotropic sheet, and An insulating portion supports the conductive portion and insulates the conductive portion, wherein in each of the conductive electrodes of the connection sheet, from the sheet member The lower surface of the edge portion of the downward projections has a circular shape.

In each of the conductive electrodes, the portion that protrudes downward from the lower surface of the sheet member may have a dome shape or a hemispherical shape.

The upper surface of the conductive electrode may be plated with a nickel powder or a nickel-diamond mixture powder.

A plurality of bumps may be disposed on the upper surface of each of the conductive electrodes and configured in a circular form while being spaced apart from a center of the upper surface of each of the conductive electrodes by a certain distance .

In each of the conductive electrodes, a portion that protrudes upward from the upper surface of the sheet member may have a dome shape.

In the conductive portion, a horizontal area of a portion that protrudes upward from the upper surface of the sheet member may be larger than a horizontal area of a portion that protrudes downward from the lower surface of the sheet member.

The conductive portion may have a structure in which a plurality of conductive particles are disposed in the elastic insulating material in the thickness direction of the anisotropic sheet.

According to another aspect of the inventive concept, there is provided a method of manufacturing a connector for connection between a device to be tested and a test device that are required to be electrically connected to each other and a terminal of the device separately Electrically connected to the gasket of the test device, the method comprising: preparing a connection sheet comprising a sheet member and a conductive electrode, wherein the sheet member has a plurality of locations formed at positions corresponding to the terminals of the device a through hole and formed of a flexible and insulating material, the conductive electrode comprising a ferromagnetic substance, combined with the plurality of through holes and protruding upward from an upper surface of the sheet member and from a lower portion of the sheet member The surface is convex downward, and in each of the conductive electrodes, an edge of a portion that protrudes downward from the lower surface of the sheet member has a circular shape; a mold is prepared, in the mold, a ferromagnetic layer disposed at a position corresponding to the conductive electrode of the connection sheet and a non-magnetic layer disposed at a position other than the position corresponding to the conductive electrode, and In addition to disposing the connecting sheet in the mold, a liquid molding material is also filled into the mold, in which the conductive particles are dispersed in the liquid elastic material; and the magnetic field is a vertical direction of the mold is applied to the mold such that the conductive particles are aligned at a position corresponding to the conductive electrode, and The liquid molding material is hardened.

In each of the conductive electrodes, the portion that protrudes downward from the lower surface of the sheet member may have a dome shape or a hemispherical shape.

Each of the conductive electrodes may comprise at least one material selected from the group consisting of iron, nickel, cobalt, or alloys thereof.

In the connector for connection according to the inventive concept, the lower edge of each of the conductive electrodes of the connection sheet has a circular shape, and thus performs a function of accumulating magnetic force during the manufacturing process, thereby minimizing the generation of the bridge.

10‧‧‧Connector device for anisotropic conductive connection

10A‧‧‧Anisotropic conductive layer

11‧‧‧ Conductive path forming part

11'‧‧‧ Bridge

12‧‧‧ Effective conductive path forming part

13‧‧‧Invalid conductive path forming part

14‧‧‧Insulation

19‧‧‧Molded material layer

20‧‧‧Sheet type connector

21‧‧‧Insulation sheet

22‧‧‧Electrode structure

30‧‧‧Support members

50, 151‧‧‧ upper mold

51, 56, 1512, 1521‧‧‧ ferromagnetic substrate

52, 57, 1511, 1522‧‧‧ ferromagnetic layer

55, 152‧‧‧ lower mold

100‧‧‧Connector connector

110‧‧‧Connecting sheets

120‧‧‧Sheet members

121‧‧‧through hole

130‧‧‧Conductive electrode

131‧‧‧Upper electrode

132‧‧‧lower electrode

133‧‧‧Connecting electrode

134‧‧‧ Nickel powder

135‧‧ ‧bumps

140‧‧‧ anisotropic sheet

141‧‧‧Electrical part

142‧‧‧Insulation

150‧‧‧Mold

170‧‧‧ device

171‧‧‧terminal

180‧‧‧Test equipment

181‧‧‧ cushion

1411, P‧‧‧ conductive particles

1513, 1523‧‧‧ non-magnetic layer

Fig. 1 is a view showing a conventional connector for anisotropic conductive connection.

2 and 3 are views for explaining a method of manufacturing the conventional anisotropic conductive connection connector of Fig. 1.

4 is a view illustrating an example of an anisotropic conductive connection connector manufactured by using the method illustrated in FIGS. 2 and 3.

FIG. 5 is a diagram of a connector for connection according to an exemplary embodiment of the inventive concept.

6A to 6C are views for explaining a method of manufacturing the connector for connection of Fig. 5.

7A and 7B are diagrams illustrating a method of manufacturing a connector for connection according to another exemplary embodiment of the inventive concept.

FIG. 8 is a connector for connection according to another exemplary embodiment of the inventive concept. Figure.

The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings.

Referring to FIG. 5, a connector 100 for connection according to an exemplary embodiment of the inventive concept is disposed between a device 170 to be tested and a test device 180 that are required to be electrically connected to each other, and electrically connects the terminals 171 of the device 170 to the terminals 171, respectively. The pad 181 of the test device 180.

The connector 100 for connection includes a connection sheet 110 and an anisotropic sheet 140.

The connection sheet 110 is disposed on the upper surface of the anisotropic sheet 140 to contact the terminal 171 of the device 170, and includes the sheet member 120 and the conductive electrode 130.

The sheet member 120 has a plurality of through holes formed at positions corresponding to the terminals 171 of the device 170, respectively, and is formed of a flexible and insulating material. The sheet member 120 may be formed of a thermosetting resin such as a polyimide resin or an epoxy resin, a polyester resin such as a polyethylene terephthalate (PET) resin or a polybutylene terephthalate resin. Or thermoplastic resin, such as polyvinyl chloride resin, polystyrene resin, polyacrylonitrile resin, polyethylene resin, polypropylene resin, acrylic resin, polybutadiene resin, polyphenylene ether polyphenylene sulfide, polyfluorene Amine or polyoxymethylene. Preferably, the sheet member 120 may be formed of a polyimide resin.

However, the sheet member 120 is not limited thereto and may be formed of a mesh or a non-woven fabric. Preferably, the sheet member 120 may be formed of organic fibers. Organic fiber example Fluororesin fibers such as polytetrafluoroethylene fibers, aromatic polyamide fibers, polyethylene fibers, polyarylate fibers, nylon fibers, and polyester fibers may be included.

In addition, the sheet member 120 may be of a linear thermal expansion coefficient having the same or similar material as the connection target member.

The organic fiber is formed, for example, an organic fiber having a linear thermal expansion coefficient of 30 × 10 ^-6 to -5 × 10 ^{-6 / K} and particularly 10 × 10 ^-6 to -3 × 10 ^{-6 / K.} In this case, since the thermal expansion of the anisotropic conductive layer is suppressed, the electrical connection with the connection target member can be stably maintained even if the sheet member 120 is subjected to a heat history caused by a temperature change.

The inner diameter of the through hole 121 formed in the sheet member 120 may be smaller than the maximum outer diameter of the conductive electrode 130. The through hole 121 can be formed by laser. However, the inventive concept is not limited thereto, and for example, the through hole 121 may be formed by machining such as drilling.

The conductive electrode 130 is combined with the through hole 121 of the sheet member 120, and protrudes upward from the upper surface of the sheet member 120 and protrudes downward from the lower surface of the sheet member 120. The upper surface of the conductive electrode 130 is flat, and the lower surface of the conductive electrode 130 has a dome shape or a hemispherical shape. In detail, the conductive electrode 130 includes an upper electrode 131 that protrudes upward from the sheet member 120, a lower electrode 132 that protrudes downward from the sheet member 120, and a connection electrode 133 that connects the upper electrode 131 and the lower electrode 132 and is inserted into the through hole 121. . The upper electrode 131 has a substantially disk shape, and the lower electrode 132 has a substantially dome shape or a hemispherical shape.

The conductive electrode 130 may be formed of a ferromagnetic substance (for example, iron, nickel, cobalt, or an alloy thereof) having excellent conductivity. A plurality of conductive electrodes 130 are attached to the sheet member 120 to correspond to the terminals 171 of the device 170 and are separated from each other, respectively.

The upper surface of the conductive electrode 130 may be plated with nickel powder 134 or a nickel-diamond mixture powder. In detail, only the nickel powder 134 may be disposed on the upper surface of the conductive electrode 130. However, diamond powder and nickel powder 134 may be disposed on the upper surface of the conductive electrode 130 to easily remove foreign matter on the electrode surface of the device 170.

In the conductive electrode 130, the horizontal area of the upper electrode 131 that protrudes upward from the sheet member 120 is larger than the horizontal area of the lower electrode 132 that protrudes downward from the sheet member 120.

The anisotropic sheet 140 is disposed under the conductive electrode 130 of the connection sheet 110 and contacts the conductive electrode 130. The anisotropic sheet 140 includes a conductive portion 141 having conductivity in a thickness direction thereof and an insulating portion 142 for supporting the conductive portion 141 and insulating the conductive portion 141.

The conductive portion 141 has a structure in which a large amount of conductive particles 1411 are disposed in the elastic insulating material in the thickness direction of the anisotropic sheet 140.

The elastic insulating material for forming the conductive portion 141 may be a crosslinked elastic polymer. The crosslinked elastic polymer can be obtained from various curable polymer forming materials, for example, conjugated diene rubber, such as polybutadiene rubber, natural rubber, polyisoprene rubber, styrene-butadiene copolymerization. Rubber or acrylonitrile-butadiene copolymer rubber, and hydrogenated materials thereof; block copolymer rubber, such as styrene-butadiene-diene block copolymer rubber or styrene-isoprene block copolymer Rubber, and its hydrogenated material; chloroprene rubber; urethane; polyester rubber; epichlorohydrin rubber; polyoxyxene rubber; ethylene-propylene copolymer rubber; and ethylene-propylene-diene copolymer rubber.

When the anisotropic sheet 140 requires weather resistance, it can be used in addition to the above The rubber other than the conjugated diene rubber in the rubber, and in particular, ruthenium rubber can be used depending on the moldability and electrical properties.

Magnetic conductive particles are used as the conductive particles 1411 because the magnetic conductive particles can be oriented by a method to be described later. Examples of the conductive particles 1411 may include particles of a magnetic metal such as iron, cobalt or nickel, particles of an alloy of the metal or particles containing such metals; using such particles as core particles and making the surface of the core particles a particle plated with a metal having high conductivity (for example, gold, silver, palladium, rhodium or the like); using non-magnetic metal particles, inorganic substance particles such as glass beads or polymer particles as core particles and surface of the core particles Plated with particles having a conductive magnetic metal such as nickel or cobalt, and the like.

Preferably, particles obtained by plating the surface of the nickel particles (core particles) with gold having a relatively high conductivity can be used.

The insulating portion 142 insulates the conductive portion 141 and integrally connects to the conductive portion 141 while supporting the conductive portion 141. The insulating portion 142 may be formed of the same material as the elastic insulating material for forming the conductive portion 141, but is not limited thereto. The insulating portion 142 may be formed of a material different from the elastic insulating material used to form the conductive portion 141. For example, the insulating portion 142 may be formed of a material having an elasticity higher than that of the elastic insulating material for forming the conductive portion 141.

A method of manufacturing the connector 100 for a connection will be described below with reference to FIGS. 6A to 6C.

As illustrated in FIG. 6A, a connection sheet 110 including a sheet member 120 and a conductive electrode 130 is prepared. A through hole 121 (shown in FIG. 5) is formed on the sheet member at a position corresponding to the terminal 171 (shown in FIG. 5) of the device 170 to be tested. 120, and the sheet member 120 is formed of a flexible and insulating material. The conductive electrode 130 is formed of a ferromagnetic substance, combined with the through hole 121 of the sheet member 120, and protrudes upward from the upper surface of the sheet member 120 and protrudes downward from the lower surface of the sheet member 120. A portion of the edge that protrudes downward from the lower surface of the sheet member 120 has a circular shape.

Next, as illustrated in FIG. 6B, the mold 150 is prepared, and the connection sheet 110 is placed in the mold 150. In the mold 150, the ferromagnetic layer 1511 is disposed at a position corresponding to the conductive electrode 130 of the connection sheet 110, and the non-magnetic layer 1513 is disposed at a position other than the position corresponding to the conductive electrode 130. The mold 150 includes an upper mold 151 and a lower mold 152. In the upper mold 151, a ferromagnetic layer 1511 is formed on the surface of the ferromagnetic substrate 1512 at a position corresponding to the conductive electrode 130, and on a surface of the ferromagnetic substrate 1512 at a position other than the position corresponding to the conductive electrode 130. A non-magnetic layer 1513 is formed. The molding surface is formed of a ferromagnetic layer 1511 and a non-magnetic layer 1513. Similarly, in the lower mold 152, a ferromagnetic layer 1522 and a non-magnetic layer 1523 are formed on the ferromagnetic substrate 1521. In addition, a liquid molding material in which the conductive particles 1411 are dispersed in the liquid elastic material is filled into the mold 150.

Next, as illustrated in FIG. 6C, a magnetic field is applied to the mold 150 in the vertical direction such that the conductive particles 1411 are lined up at positions corresponding to the conductive electrodes 130, and the liquid molding material hardens to make the connection Complete with connector 100.

In the connection connector 100 according to the exemplary embodiment of the inventive concept, the conductive particles 1411 are aligned in the thickness direction of the connection connector 100 by applying a magnetic field to the connection connector 100, and thus, With a dome-shaped lower part The divided conductive electrodes 130 accumulate magnetic forces in the process of forming the conductive portions 141, thereby minimizing the generation of bridges connecting the conductive portions 141 to each other.

In detail, in a state where the connection sheet 110 is inserted into the mold 150, the conductive electrode 130 of the connection sheet 110 together with the ferromagnetic layer 1511 formed in the mold 150 causes the conductive particles 1411 to be disposed in the thickness direction. In this process, the conductive particles 1411 may be densely arranged because each of the lower portions of the conductive electrodes 130 has a dome or hemispherical shape without an angled edge.

In addition, in the connector 100 for connection according to an exemplary embodiment of the inventive concept, an upper sectional area of each of the conductive electrodes 130 is larger than a lower sectional area of each of the conductive electrodes 130, and thus, conductive The electrode 130 can easily contact the terminal 171 of the device 170 to be tested. Specifically, the conductive portion 141 is always in a contact state, and the device 170 to be tested is transferred from the tray to contact the connector 100 for connection, and in the process, the terminal 171 of the device 170 may not be correctly aligned with the conductive electrode 130. quasi. However, since the size of the conductive electrode 130 is relatively large, the terminal 171 of the device 170 may necessarily contact the conductive electrode 130 even if the device 170 is slightly offset from its normal position.

The connector 100 for connection according to an exemplary embodiment of the inventive concept may be modified as follows.

In the exemplary embodiment described above, although the upper surface of the conductive electrode 130 is plated with nickel particles, the inventive concept is not limited thereto. For example, as illustrated in FIGS. 7A and 7B , a plurality of bumps 135 may be disposed on the upper surface of each of the conductive electrodes 130 and disposed in a circular form while being on the upper surface of each of the conductive electrodes 130 . The center is separated by a certain distance.

Also, in the above-described exemplary embodiment, although the upper surface of the conductive electrode 130 is flat, the inventive concept is not limited thereto. For example, as illustrated in FIG. 8, a portion of each of the conductive electrodes 130 that protrude upward from the upper surface of the sheet member 120 may have a dome shape.

The illustrative embodiments should be considered in a descriptive sense only and not for the purpose of limitation. Therefore, the scope of the inventive concept is not defined by the detailed description of the present invention, but is defined by the scope of the appended claims, and all the differences within the scope will be construed as being included in the inventive concept.

100‧‧‧Connector connector

110‧‧‧Connecting sheets

120‧‧‧Sheet members

121‧‧‧through hole

130‧‧‧Conductive electrode

131‧‧‧Upper electrode

132‧‧‧lower electrode

133‧‧‧Connecting electrode

134‧‧‧ Nickel powder

140‧‧‧ anisotropic sheet

141‧‧‧Electrical part

142‧‧‧Insulation

170‧‧‧Testing device

171‧‧‧ Terminals of the device to be tested

180‧‧‧Test equipment

181‧‧‧Test equipment gasket

1411‧‧‧ conductive particles

Claims (10)

A connector for connection between a device to be tested and a test device that are required to be electrically connected to each other and electrically connect a terminal of the device to a pad of the test device, the connector for use includes a connection sheet including a sheet member and a conductive electrode, wherein the sheet member has a plurality of through holes formed at positions respectively corresponding to the terminals of the device and includes a flexible and insulating material, and The conductive electrodes are respectively combined with the plurality of through holes and protrude upward from the upper surface of the sheet member and protrude downward from the lower surface of the sheet member; and an anisotropic sheet including the conductive portion and An insulating portion, wherein the conductive portion is disposed under the conductive electrode of the connection sheet, the conductive portion contacts the conductive electrode and has conductivity in a thickness direction of the anisotropic sheet, and the insulation Partially supporting and insulating the electrically conductive portion, wherein in each of the electrically conductive electrodes of the connection sheet, from the sheet member An edge surface of the downwardly convex portions has a circular shape. The connector for connection according to claim 1, wherein, in each of the conductive electrodes, a portion that protrudes downward from a lower surface of the sheet member has a dome shape or a hemispherical shape . The connector for connection according to claim 1, wherein the upper surface of the conductive electrode is plated with a nickel powder or a nickel-diamond mixture powder. The connector for connection according to claim 1, wherein a plurality of bumps are disposed in a circular form on an upper surface of each of the conductive electrodes while simultaneously with each of the conductive electrodes The center of the upper surface is separated by a specific distance. The connector for connection according to the first or second aspect of the invention, wherein, in each of the conductive electrodes, a portion that protrudes upward from an upper surface of the sheet member has a dome shape. The connector for connection according to claim 1, wherein in the conductive portion, a horizontal portion of a portion that protrudes upward from an upper surface of the sheet member is larger than a surface of the sheet member The horizontal area of the lower raised portion. The connector for connection according to claim 1, wherein the conductive portion has a structure in which a plurality of conductive particles are disposed in the elastic insulating material in the thickness direction of the anisotropic sheet. A manufacturing method of a connector for connection between a device to be tested and a test device that are required to be electrically connected to each other and electrically connecting a terminal of the device to a pad of the test device The manufacturing method of the connector for connection includes: preparing a connection sheet including a sheet member and a conductive electrode, wherein the sheet member has a plurality of through holes formed at positions respectively corresponding to the terminals of the device and A flexible and insulating material, the conductive electrode comprising a ferromagnetic substance, the conductive electrode being combined with the plurality of through holes and protruding upward from an upper surface of the sheet member and from the sheet member a lower surface of the lower surface, and in each of the conductive electrodes, an edge of a portion that protrudes downward from a lower surface of the sheet member has a circular shape; a mold is prepared, in the mold, a ferromagnetic layer disposed at a position respectively corresponding to the conductive electrode of the connection sheet and a non-magnetic layer disposed at a position other than the position corresponding to the conductive electrode, respectively At a position, and in addition to placing the connecting sheet in the mold, filling a liquid molding material into the mold, in which the conductive particles are dispersed in the liquid elastic material; And applying a magnetic field to the mold in a vertical direction of the mold such that the conductive particles are aligned at positions respectively corresponding to the conductive electrodes, and the liquid molding material is hardened. The method of manufacturing the connector according to claim 8, wherein in each of the conductive electrodes, a portion that protrudes downward from a lower surface of the sheet member has a dome shape or Hemispherical shape. The method of manufacturing a connector according to claim 8, wherein each of the conductive electrodes comprises at least one material selected from the group consisting of iron, nickel, cobalt, or an alloy thereof.