Electrical connection structure and circuit assembly

Abstract

The embodiment of the utility model discloses an electric connection structure and a circuit assembly, the electric connection structure comprises a support body and a conductive adhesive block, the conductive adhesive block is arranged on the support body and has a first side and a second side which are oppositely arranged, the first side is provided with a plurality of first connection protrusions used for contacting with first electric contact points of a first circuit block, and the second side is provided with a second connection protrusion used for contacting with second electric contact points of a second circuit block. The second side is provided with a plurality of second connecting protrusions used for being in contact with second electric contact points of the second circuit block, and therefore electric connection between the first circuit block and the second circuit block can be achieved. The electric connection structure provided by the embodiment of the utility model adopts the conductive rubber block as a conductive part, thereby facilitating the reduction of the size of the electric connection structure, the reduction of the overall height of the circuit assembly and the reduction of the occupation of the electric connection structure on the surface space of the circuit block, thereby facilitating the reduction of the overall size of the circuit assembly. Meanwhile, the signal transmission path is shortened, and the signal integrity can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical connection technical field more particularly, relate to an electrical connection structure and circuit assembly. BACKGROUND

[0002] In the electrical connection field, the electrical connection between two circuit blocks usually needs to use a specific connector. For example, for the connection between two printed circuit boards, a board-to-board connector such as a pin header connector, a straight connector, an SMT (Surface Mount Technology) connector, etc. can be used. However, the conventional connector is large in size, occupies a large longitudinal space, and is not convenient for stacking multiple circuit blocks. In addition, when applied to high-speed signal transmission, the long signal transmission path of the conventional connector has a negative impact on signal integrity. SUMMARY

[0003] Therefore, the utility model embodiment provides an electrical connection structure and a circuit assembly, which can solve at least part of the above problems in the prior art.

[0004] In a first aspect, the utility model embodiment provides an electrical connection structure, which comprises a support body and a conductive glue block. The conductive glue block is arranged on the support body. The conductive glue block has a first side and a second side arranged oppositely. The first side has a plurality of first connection protrusions. The second side has a plurality of second connection protrusions.

[0005] Further, the support body comprises a mounting frame and at least one support sheet. The mounting frame has a hollow hole which is matched with the shape of the conductive glue block and accommodates the conductive glue block. The at least one support sheet is arranged on at least one side of the mounting frame and at least partially covers the hollow hole. The support sheet has a plurality of first avoiding holes which accommodate the first connection protrusions or the second connection protrusions. The support body has a first mounting hole which is arranged apart from the hollow hole.

[0006] In a second aspect, the utility model discloses a circuit assembly, comprising a first circuit block, a second circuit block and at least one electric connection structure, the first circuit block has a plurality of first electric contact points on one side, the second circuit block is arranged apart from the first circuit block and opposite to the first electric contact point, the second circuit block has a plurality of second electric contact points, and the second electric contact point corresponds to the first electric contact point, at least one electric connection structure is arranged between the first circuit block and the second circuit block, the electric connection structure comprises a support body and a conductive glue block, the conductive glue block is arranged on the support body and has a first side and a second side arranged oppositely, the first side has a plurality of first connecting protrusions, the second side has a plurality of second connecting protrusions, the first connecting protrusion and the second connecting protrusion protrude from the surface of the support body, the first connecting protrusion is in contact with the first electric contact point, and the second connecting protrusion is in contact with the second electric contact point.

[0007] Further, the support body comprises a mounting frame and at least one support sheet, the mounting frame has a hollow hole matched with the shape of the conductive glue block and accommodating the conductive glue block, and the at least one support sheet is arranged on at least one side of the mounting frame and at least partially covers the hollow hole, the support sheet has a plurality of first avoiding holes accommodating the first connecting protrusion or the second connecting protrusion.

[0008] Further, the support body has a plurality of first mounting holes arranged apart from the hollow hole, and the plurality of first mounting holes of the support body are arranged in a non-rotationally symmetrical manner relative to the central axis of the support body, and the circuit assembly further comprises a first connector penetrating through the first mounting hole and connected with the first circuit block and / or the second circuit block.

[0009] Further, the circuit assembly further comprises a fixing member connected with the first circuit block and the second circuit block, a first gasket and / or a support block, the first gasket is arranged between the first circuit block and the second circuit block, the first gasket has a second avoiding hole avoiding the electric connection structure and a third avoiding hole avoiding the fixing member, and the support block is arranged on the side of the second circuit block away from the first circuit block and connected with the second circuit block through the fixing member.

[0010] Further, the circuit assembly includes a plurality of the electrical connection structures, the first circuit block has a middle region and an edge region located at an outer periphery of the middle region, at least one of the electrical connection structures is disposed in the middle region, and the rest of the electrical connection structures are disposed in the edge region; the circuit assembly further includes at least one second spacer disposed between the support body of the electrical connection structure located in the edge region and the first circuit block, or disposed between the support body of the electrical connection structure located in the edge region and the second circuit block.

[0011] Further, a diameter of the first connection bump is greater than a diameter of the first electrical contact point, a diameter of the second connection bump is greater than a diameter of the second electrical contact point; and / or, the first connection bump and the second connection bump protrude from a surface of the support body.

[0012] Further, the first circuit block includes a first circuit board having a plurality of first vias, the first electrical contact points are pads and correspond to the first vias one by one, centers of the first vias are offset from centers of the first electrical contact points, the plurality of first vias include a plurality of differential pairs, a distance between the first vias of a same differential pair is a first distance, a distance between first vias of different differential pairs is a second distance, the first distance is less than the second distance; and / or, the second circuit block includes a second circuit board having a plurality of second vias, the second electrical contact points are pads and correspond to the second vias one by one, centers of the second vias are offset from centers of the second electrical contact points, the plurality of second vias include a plurality of differential pairs, a distance between the second vias of a same differential pair is a third distance, a distance between second vias of different differential pairs is a fourth distance, the third distance is less than the fourth distance.

[0013] Further, the first circuit block includes a chip test socket and a carrier board connected to the chip test socket, the first electrical contact points are disposed on the carrier board, and the second circuit block is detachably connected to the carrier board.

[0014] The utility model embodiment provides a kind of electric connection structure and circuit assembly, electric connection structure includes support body and conductive glue block, conductive glue block is located support body and has the first side and second side of relative arrangement, first side has multiple first connection protrusions for with the first electrical contact point of first circuit block contact, second side has multiple second connection protrusions for with the second electrical contact point of second circuit block contact, so first circuit block and second circuit block between electrical connection can be realized.The electric connection structure of the utility model embodiment is by using conductive glue block as conductive component, it is favorable to reduce the size of electric connection structure, it is favorable to reduce the overall height of circuit assembly and it is favorable to reduce the occupation of electric connection structure to circuit block surface space, to be favorable to the reduction of the overall size of circuit assembly, while the transmission path of signal is shortened, it is favorable to improve signal integrity. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the utility model will become more apparent from the following description of the utility model embodiments with reference to the accompanying drawings, in which:

[0016] Figure 1 It is the explosion schematic view of electric connection structure of one embodiment of the utility model;

[0017] Figure 2 It is the cross-sectional structure schematic view of electric connection structure of one embodiment of the utility model;

[0018] Figure 3 It is the cross-sectional structure schematic view of electric connection structure of another embodiment of the utility model;

[0019] Figure 4 It is the explosion structure schematic view of circuit assembly of one embodiment of the utility model;

[0020] Figure 5 It is the cross-sectional structure schematic view of circuit assembly of one embodiment of the utility model;

[0021] Figure 6 It is the cross-sectional structure schematic view of circuit assembly of another embodiment of the utility model;

[0022] Figure 7 It is the schematic view of electric connection structure, first gasket and second circuit block of one embodiment of the utility model;

[0023] Figure 8 It is the structure schematic view of first circuit board of one embodiment of the utility model;

[0024] Figure 9 It is the structure schematic view of second circuit board of one embodiment of the utility model.

[0025] REFERENCE SIGNS:

[0026] 1 - electrical connection structure; 11 - support body; 111 - mounting frame; 112 - support sheet; 113 - hollow hole; 114 - first avoiding hole; 115 - first mounting hole; 12 - conductive glue block; 121 - first connecting protrusion; 122 - second connecting protrusion; 2 - first circuit block; 21 - first electrical contact point; 22 - middle region; 23 - edge region; 24 - chip test socket; 25 - carrier plate; 26 - first circuit board; 261 - first via hole; 3 - second circuit block; 31 - second electrical contact point; 32 - second circuit board; 321 - second via hole; 4 - first connecting piece; 5 - fixing piece; 6 - first gasket; 61 - second avoiding hole; 62 - third avoiding hole; 7 - second gasket; 8 - support block. DETAILED DESCRIPTION

[0027] The present application is described in detail below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, some specific details are described in detail. The present application can also be fully understood without the description of these details by those skilled in the art. In order to avoid confusion of the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0028] In addition, those of ordinary skill in the art will understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0029] Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

[0030] In the description of the present application, it is to be understood that the terms "first", "second", and the like are used only for the purpose of description and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0031] The utility model discloses an electric connection structure 1 for realizing the electric connection between two circuit blocks, for example, including but not limited to the electric connection between two printed circuit boards, or the electric connection between an electric connector and a circuit board. The electric connection structure 1 of the utility model embodiment includes a support body 11 and a conductive glue block 12 arranged on the support body 11. The conductive glue block 12 has a first side and a second side arranged oppositely, the first side has a plurality of first connecting protrusions 121, and the second side has a plurality of second connecting protrusions 122. When the electric connection structure 1 is used to electrically connect a first circuit block 2 and a second circuit block 3, the first connecting protrusions 121 are electrically connected to first electric contact points 21 on the first circuit block 2, and the second connecting protrusions 122 are electrically connected to second electric contact points 31 on the second circuit block 3.

[0032] The conductive glue block 12 is made of a material with electrical conductivity, for example, can be made of conductive glue. The conductive glue is an adhesive with electrical conductivity, mainly used for electrical connection and mechanical fixation between electronic components, usually containing a base material (such as epoxy resin) and a conductive filler (such as silver, copper, carbon or conductive polymer), wherein the base material provides the adhesive property, and the conductive filler endows the glue with electrical conductivity. The conductive glue block 12 can be formed by curing the conductive glue into a predetermined shape.

[0033] In the embodiment, the support body 11 includes a mounting frame 111 and at least one support sheet 112. The mounting frame 111 can be a rigid structure, providing positioning and mechanical support for the conductive glue block 12, for example, the mounting frame 111 can be made of flame-retardant epoxy glass cloth laminate (FR4), having good mechanical properties, dielectric properties and heat resistance. The mounting frame 111 has a hollow hole 113, which matches the shape of the conductive glue block 12 and accommodates the conductive glue block 12. The liquid or semi-liquid conductive glue can be filled into the hollow hole 113 and cover the edge of the hollow hole 113, and the conductive glue block 12 is formed by curing the conductive glue. Optionally, the support body 11 has a first mounting hole 115, which is arranged at intervals with the hollow hole 113, for positioning and fixing the electric connection structure 1 with the first circuit block 2 or the second circuit block 3. Optionally, the support body 11 has a plurality of first mounting holes 115. The plurality of first mounting holes 115 of the support body 11 are arranged in a non-rotationally symmetric manner relative to the central axis of the support body 11, which can play a positioning foolproof role and ensure the correct installation direction of the electric connection structure 1. For example, for a rectangular support body 11, one first mounting hole 115 can be arranged at each of the positions corresponding to three of the four corners. For example, the shapes of the plurality of first mounting holes 115 are different from each other.

[0034] The support sheet 112 is arranged on at least one side of the mounting frame 111 and at least partially covers the hollow hole 113. The support sheet 112 can be connected to the mounting frame 111 by bonding, pressing or other means, and is used to provide support to the end surface of the conductive glue block 12. The support sheet 112 can be made of an insulating thin plate or film, for example, the support sheet 112 can be made of a polyimide film. The support sheet 112 also has a plurality of first avoiding holes 114 for accommodating the first connecting protrusion 121 or the second connecting protrusion 122. The support sheet 112 can be arranged on one side or both sides of the mounting frame 111. In one embodiment, referring to Figure 1 and Figure 2 One support sheet 112 is arranged on the lower side of the mounting frame 111 and opposite to the second side of the conductive glue block 12, and the second connecting protrusion 122 passes through the first avoiding hole 114 of the support sheet 112. In another embodiment, referring to Figure 3 The support body 11 includes two support sheets 112, one of which is arranged on the upper side of the mounting frame 111 and opposite to the first side of the conductive glue block 12, and the other is arranged on the lower side of the mounting frame 111 and opposite to the second side of the conductive glue block 12. Optionally, after the support sheet 112 is connected to the mounting frame 111, the conductive glue in a liquid or semi-liquid state is injected into the hollow hole 113 and the first avoiding hole 114 to a predetermined height, and then the conductive glue is solidified to form the conductive glue block 12. The conductive glue in the first avoiding hole 114 is solidified to form the first connecting protrusion 121 or the second connecting protrusion 122.

[0035] Another aspect of the embodiment of the utility model relates to a circuit assembly, including first circuit block 2, second circuit block 3 and at least one electric connection structure 1 in at least partial embodiment above. First circuit block 2 has a plurality of first electric contact points 21 on one side, and second circuit block 3 is arranged spaced apart from first circuit block 2 and opposite to first electric contact point 21, and second circuit block 3 has a plurality of second electric contact points 31, and second electric contact point 31 corresponds to first electric contact point 21 one by one. Electric connection structure 1 is clamped between first circuit block 2 and second circuit block 3, and first connecting protrusion 121 is in contact with first electric contact point 21, and second connecting protrusion 122 is in contact with second electric contact point 31.

[0036] Referring to Figure 5 The circuit assembly further includes a first connecting piece 4, which passes through the first mounting hole 115 and is connected to the first circuit block 2 and / or the second circuit block 3. For example, a positioning pin can be arranged on the second circuit block 3 as the first connecting piece 4, and when the electric connection structure 1 is installed, the positioning pin passes through the corresponding first mounting hole 115 of the electric connection structure 1 to realize the positioning of the electric connection structure 1.

[0037] In some embodiments, the first connecting protrusion 121 and the second connecting protrusion 122 protrude from the corresponding surfaces of the support body 11 to facilitate contact with the first electrical contact 21 or the second electrical contact 31. In some embodiments, the first connecting protrusion 121 and the second connecting protrusion 122 can be sized larger, for example, the end surface of the first connecting protrusion 121 can be sized larger than the first electrical contact 21, and the end surface of the second connecting protrusion 122 can be sized larger than the second electrical contact 31. For example, referring to Figure 5 , the end surfaces of the first connecting protrusion 121, the first electrical contact 21, the second connecting protrusion 122, and the second electrical contact 31 are circular, the diameter of the first connecting protrusion 121 is larger than the diameter of the first electrical contact 21, and the diameter of the second connecting protrusion 122 is larger than the diameter of the second electrical contact 31.

[0038] The circuit assembly further comprises a fixing member 5 for connecting the first circuit block 2 and the second circuit block 3, which can be, for example, a screw, a bolt, or other detachable connecting structure suitable for connecting the first circuit block 2 and the second circuit block 3. Optionally, referring to Figure 6 , the circuit assembly further comprises a first gasket 6 made of insulating material and arranged between the first circuit block 2 and the second circuit block 3, the first gasket 6 having a second avoiding hole 61 for avoiding the electric connecting structure 1 and a third avoiding hole 62 for avoiding the fixing member 5. The first gasket 6 can fill the gap between the first circuit block 2 and the second circuit block 3, preventing the first circuit block 2 and the second circuit block 3 from bending after being connected by the fixing member 5. Optionally, referring to Figure 7 , the circuit assembly can further comprise a support block 8 made of electrically insulating material, for example, the support block 8 can be a rigid plate made of phenolic resin, glass fiber, epoxy resin, polyvinyl chloride, or other electrically insulating material. The support block 8 is arranged on the side of the second circuit block 3 away from the first circuit block 2 and is connected to the second circuit block 3 by the fixing member 5, and the support block 8 can support the second circuit block 3 to prevent the second circuit block 3 from warping.

[0039] As shown in Figure 4 , Figure 6 and Figure 7 , the circuit assembly can comprise a plurality of electric connecting structures 1. Referring to Figure 6The first circuit block 2 has a middle region 22 and an edge region 23 located at the outer periphery of the middle region 22, at least one of the plurality of electrical connection structures 1 is arranged in the middle region 22, and the rest of the electrical connection structures 1 are arranged in the edge region 23. The circuit assembly further comprises at least one second spacer 7 arranged between the support body 11 of the electrical connection structure 1 located in the edge region 23 and the first circuit block 2, or arranged between the support body 11 of the electrical connection structure 1 located in the edge region 23 and the second circuit block 3. For example, referring to Figure 6 The second spacer 7 is arranged between the support body 11 of the electrical connection structure 1 located in the edge region 23 and the second circuit block 3. Since the first circuit block 2 and the second circuit block 3 are connected by the fixing member 5, when the sizes of the first circuit block 2 and the second circuit block 3 are large or the forces are uneven, the first circuit block 2 or the second circuit block 3 is prone to warping, causing the middle part of the first circuit block 2 or the second circuit block 3 to bend outward, and the electrical connection structure 1 located in the middle region 22 may not be able to achieve contact with the first electrical contact point 21 and the second electrical contact point 31. By arranging the second spacer 7 on the side of the electrical connection structure 1 located in the edge region 23, the warping of the first circuit block 2 or the second circuit block 3 can be prevented. Optionally, the second spacer 7 can have a similar structure as the mounting frame 111.

[0040] In one application scenario, the circuit assembly can be applied in chip testing. Referring to Figure 4 The first circuit block 2 comprises a chip test socket 24 and a carrier plate 25 connected to the chip test socket 24, the first electrical contact point 21 is arranged on the carrier plate 25, and the second circuit block 3 is detachably connected to the carrier plate 25. The second circuit block 3 can be a conversion board connected to a test device, and by replacing different first circuit blocks 2 or second circuit blocks 3, the circuit assembly can be adapted to different chip testing needs.

[0041] In some embodiments, the first circuit block 2 comprises a first circuit board 26, referring to Figure 8 The first circuit board 26 has a plurality of first vias 261, and the first electrical contact point 21 can be a pad and corresponds to the first via 261 one by one. The center of the first via 261 deviates from the center of the first electrical contact point 21, and the plurality of first vias 261 comprises a plurality of differential pairs, the distance between the first vias 261 of the same differential pair is a first distance, and the distance between the first vias 261 of different differential pairs is a second distance, and the first distance is smaller than the second distance. For example, Figure 8 The two first vias 261 on the left side in the middle are two first vias 261 of the first differential pair of the first circuit board 26, Figure 8The two first vias 261 on the left side of the middle are two first vias 261 of a first differential pair, and the first distance D1 is smaller than the second distance D2. This design improves the coupling degree between the two vias of the same differential pair and improves the isolation degree between different differential pairs, which is beneficial to improve the signal integrity of the first circuit board 26.

[0042] In some embodiments, referring to Figure 9 The second circuit block 3 includes a second circuit board 32, and the second circuit board 32 has a plurality of second vias 321. The second electrical contact points 31 can be pads and correspond to the second vias 321 one by one. The centers of the second vias 321 are offset from the centers of the second electrical contact points 31. The plurality of second vias 321 include a plurality of differential pairs. The distance between the second vias 321 of the same differential pair is a third distance, and the distance between the second vias 321 of different differential pairs is a fourth distance. The third distance is smaller than the fourth distance. For example, Figure 9 The two first vias 261 on the left side of the middle are two first vias 261 of a first differential pair of the second circuit board 32, Figure 9 The two first vias 261 on the right side of the middle are two first vias 261 of a second differential pair, and the third distance D3 is smaller than the fourth distance D4. This design improves the coupling degree between the two vias of the same differential pair and improves the isolation degree between different differential pairs, which is beneficial to improve the signal integrity of the second circuit board 32.

[0043] The utility model embodiment provides a kind of electric connection structure 1 and circuit assembly, electric connection structure 1 includes support body 11 and conductive glue block 12, conductive glue block 12 is located support body 11 and has oppositely arranged first side and second side, first side has a plurality of first connection protrusions 121 for being contacted with the first electrical contact point 21 of first circuit block 2, second side has a plurality of second connection protrusions 122 for being contacted with the second electrical contact point 31 of second circuit block 3, so first circuit block 2 and second circuit block 3 between electrical connection can be realized.The electric connection structure 1 of the utility model embodiment is by using conductive glue block 12 as conductive component, it is advantageous to reduce the size of electric connection structure 1, it is advantageous to reduce the overall height of circuit assembly and it is advantageous to reduce the occupation of electric connection structure 1 to circuit block surface space, so it is advantageous to the size reduction of circuit assembly overall, while the transmission path of signal is shortened, it is advantageous to improve signal integrity.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An electrical connection structure, characterized in that: include: Support body; as well as The conductive rubber block is provided on the support body, and has a first side and a second side that are opposite to each other. The first side has a plurality of first connecting protrusions, and the second side has a plurality of second connecting protrusions.

2. The electrical connection structure according to claim 1, wherein: The support body comprises: A mounting frame having a hollow hole, wherein the hollow hole matches the shape of the conductive rubber block and accommodates the conductive rubber block; and At least one supporting piece, provided on at least one side of the mounting frame and at least partially covering the hollow hole, the supporting piece having a plurality of first avoidance holes, the first avoidance holes accommodating the first connecting protrusion or the second connecting protrusion; Wherein, the support body has a first mounting hole, and the first mounting hole is spaced apart from the hollow hole.

3. A circuit assembly, characterized in that: include: a first circuit block having a plurality of first electrical contacts on one side; a second circuit block spaced apart from the first circuit block and opposite to the first electrical contact point, the second circuit block having a plurality of second electrical contact points corresponding to the first electrical contact points; as well as At least one electrical connection structure is arranged between the first circuit block and the second circuit block, and the electrical connection structure includes a support body and a conductive rubber block. The conductive rubber block is arranged on the support body and has a first side and a second side arranged opposite to each other, the first side has a plurality of first connection protrusions, and the second side has a plurality of second connection protrusions, the first connection protrusions are in contact with the first electrical contact point, and the second connection protrusions are in contact with the second electrical contact point.

4. The circuit assembly according to claim 3, wherein: The support body comprises: A mounting frame having a hollow hole, wherein the hollow hole matches the shape of the conductive rubber block and accommodates the conductive rubber block; and At least one supporting piece is provided on at least one side of the mounting frame and at least partially covers the hollow hole. The supporting piece has a plurality of first avoidance holes, and the first avoidance holes accommodate the first connecting protrusion or the second connecting protrusion.

5. The circuit assembly according to claim 4, wherein: The support body has a plurality of first mounting holes, the first mounting holes are spaced apart from the hollow holes, and the plurality of first mounting holes of the support body are arranged in a non-rotationally symmetrical manner relative to the central axis of the support body; The circuit assembly further includes a first connector, which passes through the first mounting hole and is connected to the first circuit block and / or the second circuit block.

6. The circuit assembly according to claim 3, wherein: The circuit assembly includes a fixing member connecting the first circuit block and the second circuit block; The circuit assembly further includes: A first gasket is provided between the first circuit block and the second circuit block, the first gasket having a second avoidance hole for avoiding the electrical connection structure and a third avoidance hole for avoiding the fixing member; and / or The supporting block is provided on a side of the second circuit block away from the first circuit block and is connected to the second circuit block through the fixing member.

7. The circuit assembly according to claim 3, wherein: The circuit assembly includes a plurality of the electrical connection structures, the first circuit block has a central region and an edge region located on the periphery of the central region, at least one of the plurality of electrical connection structures is provided in the central region, and the remaining electrical connection structures are provided in the edge regions; The circuit assembly further comprises: At least one second gasket is provided between the support body of the electrical connection structure located in the edge area and the first circuit block, or between the support body of the electrical connection structure located in the edge area and the second circuit block.

8. The circuit assembly according to claim 3, wherein: The diameter of the first connecting protrusion is larger than the diameter of the first electrical contact point, and the diameter of the second connecting protrusion is larger than the diameter of the second electrical contact point; and / or The first connecting protrusion and the second connecting protrusion protrude from the surface of the support body.

9. The circuit assembly according to claim 3, wherein: The first circuit block includes a first circuit board, the first circuit board has a plurality of first vias, the first electrical contacts are pads corresponding to the first vias one-to-one, the centers of the first vias are offset from the centers of the first electrical contacts, the plurality of first vias include a plurality of differential pairs, the distance between the first vias of the same differential pair is a first distance, the distance between the first vias of different differential pairs is a second distance, and the first distance is smaller than the second distance; and / or The second circuit block includes a second circuit board, the second circuit board has a plurality of second vias, the second electrical contact points are pads and correspond one-to-one to the second vias, the centers of the second vias deviate from the centers of the second electrical contacts, the plurality of second vias include a plurality of differential pairs, the distance between the second vias of the same differential pair is a third distance, the distance between the second vias of different differential pairs is a fourth distance, and the third distance is smaller than the fourth distance.

10. The circuit assembly according to claim 3, wherein: The first circuit block includes a chip test socket and a carrier board connected to the chip test socket, the first electrical contact point is provided on the carrier board, and the second circuit block is detachably connected to the carrier board.

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