Manufacturing method of vertical conductive adhesive and vertical conductive adhesive

Abstract

The vertical conductive adhesive manufacturing method comprises the following steps that a metal elastic piece base body is manufactured, an elastic metal sheet is manufactured into the metal elastic piece base body with a plurality of single elastic pieces through a subtractive machining technology, and the metal elastic piece base body is of an elastic metal sheet upper and lower end connecting structure; a separation gap formed by a subtractive machining process is formed between every two adjacent single elastic sheets; manufacturing a clamping groove plate, wherein the clamping groove plate is provided with a clamping groove corresponding to the metal elastic piece base body; manufacturing an insulating plate, wherein the insulating plate is connected with the bottom surface of the clamping groove plate; filling liquid insulating elastic glue, pouring the liquid insulating elastic glue into the clamping groove, and filling the space between the separation gap and the insulating plate and between the inner side surface of the metal elastic part base body and the insulating plate; after the liquid insulation elastic glue is solidified, processing the two ends, connected up and down, of the metal elastic piece base body until the monomer elastic pieces are separated from each other, and releasing the connection to obtain the metal elastic piece; and after the metal elastic piece is manufactured, the clamping groove plate is removed.

Description

Technical Field

[0001] The present application relates to the technical field of electronic component devices, and in particular to a method for manufacturing a vertical conductive adhesive and a vertical conductive adhesive. Background Art

[0002] With the development of high-density and high-integration electronic components such as chips and circuit boards, the electrical signal pins of components are getting smaller and smaller. Traditional spring pins or spring clips have encountered bottlenecks or high cost pressures in the fields of testing and signal connection. Traditional conductive parts in this field cannot well meet the requirements of high-density arrangement of electrical signal pins of corresponding high-density components while maintaining a small size, and ensure structural stability. Summary of the invention

[0003] The present invention mainly aims at the above problems and proposes a method for manufacturing a vertical conductive adhesive and a vertical conductive adhesive, aiming to solve the technical problems in the background technology.

[0004] To achieve the above object, the present invention provides a method for manufacturing a vertical conductive adhesive and a vertical conductive adhesive, wherein the method for manufacturing the vertical conductive adhesive comprises the following steps: Manufacturing a metal elastic component matrix, manufacturing an elastic metal sheet into a metal elastic component matrix having a plurality of single elastic sheets by a material reduction process, wherein the metal elastic component matrix is ​​a connection structure between the upper and lower ends of the elastic metal sheet, and a separation gap is provided between two adjacent single elastic sheets by the material reduction process; Making a slot plate, wherein the slot plate is provided with a slot corresponding to the metal elastic member substrate; Making an insulating plate, wherein the insulating plate is connected to the bottom surface of the slot plate; Filling liquid insulating elastic glue, pouring the liquid insulating elastic glue into the card slot to fill the separation gap and the space between the inner surface of the metal elastic member substrate and the insulating plate; After the liquid insulating elastic glue solidifies, the upper and lower ends of the metal elastic member substrate are processed until each of the monomer spring pieces is separated and disconnected to obtain the metal elastic member; After the metal elastic member is manufactured, the slot plate is removed.

[0005] Furthermore, it also includes a first detection processing step. After the metal elastic part is manufactured, if it is detected that the upper and lower ends of the single spring piece do not expose the insulating elastic glue, the insulating elastic glue is repaired to expose the insulating elastic glue at the upper and lower ends of the single spring piece.

[0006] Furthermore, the method further comprises a second detection processing step, wherein after the metal elastic member is manufactured, the surface electroplating layer of the single spring piece is detected, and when damage is detected in the surface electroplating layer, the damaged part is re-electroplated.

[0007] Furthermore, the subtractive processing technology is a chemical etching process or a laser cutting process.

[0008] Furthermore, before manufacturing the metal elastic member substrate, a step of electroplating a gold or platinum layer on the surface of the elastic metal sheet is also included.

[0009] Furthermore, in the step of making the insulating board, the insulating board raw material is provided with an accommodating opening for accommodating the slot plate.

[0010] Furthermore, after the liquid insulating elastic glue solidifies, the slot plate and the insulating plate in the upper and lower end regions of the monomer spring piece are ground away through a grinding process; after the metal elastic part is obtained, the insulating silicone in the upper and lower end regions of the monomer spring piece is removed through laser scanning, and the upper and lower ends of the monomer spring piece are protruded from the surface of the insulating silicone.

[0011] The present application provides a vertical conductive adhesive, which is a vertical conductive adhesive prepared by the aforementioned vertical conductive adhesive preparation method.

[0012] Furthermore, the cross-section of the elastic metal sheet is any one of an arch shape, a continuous curved shape, and a continuous bent shape; the upper and lower ends of the elastic metal sheet are straight plate sections or connecting blocks; the material of the liquid insulating elastic glue is any one of silicone, elastic PU, and elastic epoxy resin; the base material of the elastic metal sheet is any one of copper, copper, copper, gold, silver, high carbon steel, and beryllium copper; the plating material of the elastic metal sheet is any one of gold, silver, and platinum.

[0013] Furthermore, the upper and lower ends of the single elastic piece in the metal elastic member are exposed 5 to 50 um from the protruding surface of the insulating elastic glue.

[0014] Compared with the prior art, the manufacturing method and vertical conductive adhesive provided by the present invention benefit from the fact that only a separation gap is opened first, and the separation is not completely divided into individual unconnected monomer shrapnel. Therefore, before and after the liquid insulating elastic adhesive solidifies, the monomer shrapnel will not be driven to move due to flow, condensation and shrinkage. Therefore, the arrangement accuracy is guaranteed. After executing step S600, the upper and lower ends of each monomer shrapnel in the original blocking metal elastic member are exposed, and the corresponding electrical contacts or contact pins of two devices that need to be conductive are respectively connected. Since the gap between two adjacent monomer shrapnel is filled with insulating elastic glue, the monomer shrapnel and the monomer shrapnel are separated, positioned and insulated to prevent electrical connection. At the same time, the monomer shrapnel also obtains the effect of elastic support, which not only strengthens the structural strength of the monomer shrapnel, but also enhances the elasticity of the monomer shrapnel, so as to avoid the monomer shrapnel from being repeatedly squeezed, compressed and decompressed during use, resulting in metal fatigue. The service life of the vertical conductive adhesive is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of a single spring piece of vertical conductive adhesive in the present application.

[0016] Figure 2 This is a schematic cross-sectional structure diagram of another embodiment of a single spring piece of vertical conductive adhesive of the present application.

[0017] Figure 3 This is a schematic cross-sectional structure diagram of another embodiment of a single spring piece of vertical conductive adhesive of the present application.

[0018] Figure 4 This is a schematic cross-sectional structure diagram of another embodiment of a single spring piece of vertical conductive adhesive of the present application.

[0019] Figure 5 This is a schematic diagram of the connection structure between a slot plate and an insulating plate of a vertical conductive adhesive in the present application.

[0020] Figure 6 This is a schematic diagram of the structure of a metal elastic member substrate with vertical conductive adhesive in this application.

[0021] Figure 7 This is a schematic structural diagram of a vertical conductive adhesive in this application.

[0022] The reference numerals shown in the figure are: 1, card slot plate; 110, card slot; 2, insulating plate; 210, positioning hole; 3, metal elastic member substrate; 310, single spring piece; 320, slot; 4, insulating elastic glue. DETAILED DESCRIPTION

[0023] Please refer to Figure 1 - Figure 7 This embodiment provides a method for manufacturing a vertical conductive adhesive, and the method for manufacturing a vertical conductive adhesive includes the following steps: S100: manufacturing a metal elastic member matrix, manufacturing an elastic metal sheet into a metal elastic member matrix having a plurality of single elastic sheets 310 by a subtractive processing technology, wherein the metal elastic member matrix is ​​a connection structure between the upper and lower ends of the elastic metal sheet, and a separation gap is provided between two adjacent single elastic sheets by the subtractive processing technology; S200: manufacturing a card slot plate 1, wherein the card slot plate is provided with a card slot 110 corresponding to the metal elastic member substrate; S300: manufacturing an insulating plate, wherein the insulating plate is connected to the bottom surface of the slot plate; S400: filling liquid insulating elastic glue, pouring the liquid insulating elastic glue into the card slot to fill the separation gap and the space between the inner surface of the metal elastic member substrate and the insulating plate; S500: after the liquid insulating elastic glue solidifies, processing the upper and lower ends of the metal elastic member substrate until each of the monomer spring pieces is separated and disconnected to obtain the metal elastic member; S600: After the metal elastic member is manufactured, the slot plate is removed.

[0024] It is worth noting that steps S100, S200, and S300 do not limit the order in which they are executed. Before executing step S400 to fill the liquid insulating elastic glue, the metal elastic member substrate is first inserted into the card slot. The card slot is a slot 320 structure having a corresponding multi-piece metal spring. The multi-piece metal spring is a metal elastic member substrate having multiple single springs.

[0025] In step S500, since the metal elastic component base is positioned in the slot, and the insulating elastic glue 4 is filled after the liquid insulating elastic glue solidifies, and the insulating plate serves as the bottom support, when processing the metal elastic component base, each of the said monomer spring pieces is separated, that is, the two ends of the metal elastic component base connected up and down are processed to obtain the metal elastic component, which can be compared with directly making the elastic metal sheet into a plurality of unconnected monomer spring pieces, and then arranging and connecting with the insulating elastic glue and the insulating plate, with low processing difficulty, high yield and high processing efficiency. Thanks to the support of the insulating elastic glue, when separating each of the said monomer spring pieces, it is prevented that the metal elastic component base is suspended in the air without support and shifted.

[0026] Thanks to the fact that only the separation gap is opened first, instead of being completely divided into individual shrapnel that are not connected to each other, the liquid insulating elastic glue will not move the individual shrapnel due to flow, condensation and shrinkage before and after solidification, thus ensuring the accuracy of arrangement.

[0027] After executing step S600, the upper and lower ends of each single spring piece in the original blocking metal elastic member are exposed, and are respectively connected to the corresponding electrical contacts or contact pins of two devices that need to conduct electricity. Since the gap between two adjacent single spring pieces is filled with insulating elastic glue, the single spring pieces are separated, positioned and insulated from each other to prevent electrical connection. At the same time, the single spring piece also obtains the function of elastic support, which not only strengthens the structural strength of the single spring piece, but also enhances the elasticity of the single spring piece, and avoids the single spring piece from being repeatedly squeezed, compressed and decompressed during use, resulting in metal fatigue. The service life of the vertical conductive glue is extended.

[0028] The vertical conductive adhesive made by this processing method can have good stability even if the overall size is small, ensuring high-density arrangement of the monomer spring pieces and accurate distribution of the electrical signal pins of the corresponding electronic components. When the upper and lower surfaces of the vertical conductive adhesive contact the conductive points, the monomer spring pieces extending from the upper and lower ends of the insulating elastic adhesive can form an upper and lower conductive path.

[0029] After the liquid insulating elastic glue solidifies, it becomes insulating elastic glue.

[0030] Furthermore, it also includes a first detection processing step. After the metal elastic part is manufactured, if it is detected that the upper and lower ends of the single spring piece do not expose the insulating elastic glue, the insulating elastic glue is repaired to expose the insulating elastic glue at the upper and lower ends of the single spring piece.

[0031] In some cases, in order to ensure the smooth progress of step S500 or to facilitate the insertion of the metal elastic member into the slot, the slot design of the slot plate does not cover the upper and lower ends of the single spring piece. Therefore, the insulating elastic glue will also cover the upper and lower ends of the single spring piece, and the insulating elastic glue needs to be repaired through the first detection and processing step.

[0032] Furthermore, the method further comprises a second detection processing step, wherein after the metal elastic member is manufactured, the surface electroplating layer of the single spring piece is detected, and when damage is detected in the surface electroplating layer, the damaged part is re-electroplated.

[0033] When executing step S500, there is a certain probability that the surface electroplating layer of the single spring piece will be damaged, affecting the conductive performance or corrosion resistance. Therefore, the second detection and processing step is performed to repair the damaged surface and improve the quality of the vertical conductive adhesive manufactured by the method.

[0034] Furthermore, the subtractive processing technology is a chemical etching process or a laser cutting process.

[0035] Compared with mechanical processing, these two processes can produce smaller separation gaps, allowing the single spring pieces to be arranged with high density and the overall size of the vertical conductive adhesive to be smaller, providing convenience for the electrical connection and signal transmission of highly integrated components.

[0036] Furthermore, before manufacturing the metal elastic member substrate, a step of electroplating a gold or platinum layer on the surface of the elastic metal sheet is also included.

[0037] By electroplating a gold or platinum layer on the surface of the elastic metal sheet, the elastic metal sheet substrate can be made of a metal material with good elasticity, and the elastic metal does not need to be made of gold or platinum as a whole, which saves costs and improves the conductivity and corrosion resistance of the single shrapnel.

[0038] Furthermore, in the step of making the insulating board, the insulating board raw material is provided with an accommodating opening for accommodating the slot plate.

[0039] By accommodating the opening, the slot plate and the insulating plate can be accurately aligned, and the slot plate can be prevented from shifting.

[0040] In some embodiments, the insulating board material itself is provided with positioning holes 210, through which the insulating board 2 is positioned and fixed on the corresponding processing platform, and other components indirectly connected to the insulating board are also positioned, thereby improving processing accuracy.

[0041] Furthermore, after the liquid insulating elastic glue solidifies, the slot plate and the insulating plate in the upper and lower end regions of the monomer spring piece are ground away through a grinding process, and the connection positions of the multi-piece metal elastic component matrix are removed, so that the monomer spring pieces are insulated from each other and are conductive up and down; after the metal elastic component is obtained, the insulating silicone in the upper and lower end regions of the monomer spring piece is removed through laser scanning, and the upper and lower ends of the monomer spring piece protrude from the surface of the insulating silicone.

[0042] Because the processed vertical conductive colloid is small in shape and size, it is not possible to use the conventional machining method with large amplitude and large feed rate to grind and remove the slot plate and the insulating plate at the upper and lower end areas of the single spring. Through the grinding process, the partial structure of the slot plate and the insulating plate can be appropriately removed with high precision.

[0043] Laser scanning is used to remove the insulating silicone in the upper and lower end areas of the monomer shrapnel. This method has high processing accuracy and high efficiency, and is used for refined processing.

[0044] The present application provides a vertical conductive adhesive, which is a vertical conductive adhesive prepared by the aforementioned vertical conductive adhesive preparation method.

[0045] Please refer to Figure 1 - Figure 7 , the cross section of the elastic metal sheet is any one of an arch shape, a continuous bending shape, and a continuous bending shape; the upper and lower ends of the elastic metal sheet are straight plate sections or connecting blocks; the liquid insulating elastic adhesive material is any one of silicone, elastic PU, and elastic epoxy resin; the base material of the elastic metal sheet is any one of copper, copper, copper, gold, silver, high carbon steel, and beryllium copper; the plating material of the elastic metal sheet is any one of gold, silver, and platinum; The upper and lower ends of the single elastic piece in the metal elastic member are exposed from the protruding surface of the insulating elastic glue by 5 to 50 um.

[0046] The bow shape, the continuous bending shape, and the continuous bending shape are all good structures for supporting elastic deformation and recovery. The cross section of the elastic metal sheet can also adopt other structures that can provide good support for elastic deformation and recovery.

[0047] When the upper and lower ends of the elastic metal sheet are straight plate sections, they can correspond to the contact points on the components. When the upper and lower ends of the elastic metal sheet are connecting blocks, they can correspond to the contact pins on the components.

[0048] The conductivity can be increased by selecting gold or silver as the plating material on the surface of the elastic metal sheet substrate. Other alloy materials can also be selected to increase both the wear resistance and the conductivity.

[0049] In summary, the present invention provides a universal vertical conductive adhesive solution for testing or signal connection, which has the advantages of high versatility, low cost and high density, and can meet the needs of high-frequency model transmission signals.

[0050] In order to facilitate the intuitive observation of the finished structure of the vertical conductive adhesive, Figure 7 The distance between the individual springs in the figure is shown in a microscopic magnified image and is only for illustration. In the actual product of vertical conductive adhesive, the distance between the individual springs is smaller.

Claims

1. A method for making a vertical conductive adhesive, characterized in that: The method for making the vertical conductive adhesive comprises the following steps: Manufacturing a metal elastic component matrix, manufacturing an elastic metal sheet into a metal elastic component matrix having a plurality of single elastic sheets by a material reduction process, wherein the metal elastic component matrix is ​​a connection structure between the upper and lower ends of the elastic metal sheet, and a separation gap is provided between two adjacent single elastic sheets by the material reduction process; Making a slot plate, wherein the slot plate is provided with a slot corresponding to the metal elastic member substrate; Making an insulating plate, wherein the insulating plate is connected to the bottom surface of the slot plate; Filling liquid insulating elastic glue, pouring the liquid insulating elastic glue into the card slot to fill the separation gap and the space between the inner surface of the metal elastic member substrate and the insulating plate; After the liquid insulating elastic glue solidifies, the upper and lower ends of the metal elastic member substrate are processed until each of the monomer spring pieces is separated and disconnected to obtain the metal elastic member; After the metal elastic member is manufactured, the slot plate is removed.

2. The method for making a vertical conductive adhesive according to claim 1, characterized in that: The method further comprises a first detection processing step, wherein after the metal elastic member is manufactured, when it is detected that the insulating elastic glue is not exposed at the upper and lower ends of the single elastic piece, the insulating elastic glue is repaired so that the insulating elastic glue is exposed at the upper and lower ends of the single elastic piece.

3. The method for making a vertical conductive adhesive according to claim 1, characterized in that: The method further comprises a second detection processing step, wherein after the metal elastic member is manufactured, the surface electroplating layer of the single spring piece is detected, and when the surface electroplating layer is detected to be damaged, the damaged part is re-electroplated.

4. The method for making a vertical conductive adhesive according to claim 1, characterized in that: The subtractive machining process is a chemical etching process or a laser cutting process.

5. The method for making a vertical conductive adhesive according to claim 1, characterized in that: Before manufacturing the metal elastic member substrate, the method further includes electroplating a gold or platinum layer on the surface of the elastic metal sheet.

6. The method for making a vertical conductive adhesive according to claim 1, characterized in that: In the step of making the insulating board, the insulating board material is provided with an accommodating opening for accommodating the slot plate.

7. The method for making a vertical conductive adhesive according to claim 1, characterized in that: After the liquid insulating elastic glue solidifies, the slot plate and the insulating plate in the upper and lower end regions of the monomer spring are ground away through a grinding process; after the metal elastic part is obtained, the insulating silicone in the upper and lower end regions of the monomer spring is removed through laser scanning, and the upper and lower ends of the monomer spring are protruded from the surface of the insulating silicone.

8. A vertical conductive adhesive, characterized in that: The vertical conductive adhesive is a vertical conductive adhesive prepared by the method for preparing the vertical conductive adhesive according to any one of claims 1 to 8.

9. The vertical conductive adhesive according to claim 8, characterized in that: The cross-section of the elastic metal sheet is any one of an arch shape, a continuous curved shape, and a continuous bent shape; the upper and lower ends of the elastic metal sheet are straight plate sections or connecting blocks; the material of the liquid insulating elastic glue is any one of silicone, elastic PU, and elastic epoxy resin; the base material of the elastic metal sheet is any one of copper, copper, copper, gold, silver, high carbon steel, and beryllium copper; the plating material of the elastic metal sheet is any one of gold and silver.

10. The vertical conductive adhesive according to claim 8, characterized in that: The upper and lower ends of the single elastic piece in the metal elastic member are exposed from the protruding surface of the insulating elastic glue by 5 to 50 um.

Images