CN113708157A

CN113708157A - Backboard connector and assembly thereof

Info

Publication number: CN113708157A
Application number: CN202010438752.1A
Authority: CN
Inventors: 王向东; 胡建龙; 江志耀; 卞道振; 简志明; 萧世伟
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-11-26
Anticipated expiration: 2040-05-22
Also published as: CN113708157B

Abstract

The invention discloses a backplane connector, which comprises a plurality of conductive sheets, wherein each conductive sheet comprises a conductive support piece, a plurality of signal terminal pairs and a shielding piece, and each signal terminal comprises a butt joint part, a middle part and a mounting part. The conductive support member is provided with a first surface, a second surface and a plurality of terminal grooves which are opposite to each other, each terminal groove penetrates through the butt joint end, the mounting end and the first surface, so that the terminal groove is provided with an upper inner wall surface, a lower inner wall surface and a side inner wall surface, each signal terminal pair is accommodated in the corresponding terminal groove, the butt joint part is positioned between the upper inner wall surface, the lower inner wall surface and the side inner wall surface of the corresponding terminal groove, the shielding sheet is attached to the first surface, a plurality of elastic arms extend out of the shielding sheet, and the elastic arms extend into the terminal grooves and are positioned on the upper side and/or the lower side of the butt joint part of each signal terminal pair. Compared with the prior art, the conductive support part is a conductive body, provides three-faced shielding effects for the signal terminal pair, simplifies the manufacturing and meets the high-frequency performance.

Description

Backboard connector and assembly thereof

[ technical field ] A method for producing a semiconductor device

The invention relates to a backplane connector and a combination thereof.

[ background of the invention ]

Chinese patent publication No. CN105612664A discloses a backplane connector in which each signal terminal 70 forming a differential pair includes contact portions 71, 72, and the contact portions 71 forming the differential pair are arranged to be edge coupled, but the contact portions 71, 72 are spaced apart from each other by a greater distance than the body portions 73, 74. Horizontally aligned contacts 71 are located in the insulated shroud 20. To minimize crosstalk, a U-shaped shield 105 may be inserted into the U-shaped channel 29 of the shroud wall 26 adjacent the contact portion 71. The ground terminal 80 is in the form of a metal plate, and is bent to form a rolled edge portion, thereby shielding adjacent signal terminal pairs. However, in actual manufacturing, the ground terminal is complicated in structure.

It is therefore desirable to design a circuit that satisfies the signal shielding effect, achieves high frequency performance, and also satisfies manufacturing and cost considerations.

[ summary of the invention ]

The main object of the present invention is to provide a backplane connector and a combination thereof, which enable a simplified manufacturing.

In order to achieve the purpose, the invention adopts the following technical scheme: a backplane connector comprises at least one conductive sheet, wherein the conductive sheet is provided with a butt joint end and a mounting end, the conductive sheet comprises a conductive support piece, a plurality of signal terminal pairs and a shielding sheet, each signal terminal pair consists of two signal terminals and is embedded in an insulator, each signal terminal comprises a butt joint part, a mounting part and a middle part for connecting the butt joint part and the mounting part, the butt joint part and the mounting part are exposed out of the insulator, and at least part of the middle part is embedded in the insulator; the conductive support member is provided with a first surface, a second surface and a plurality of terminal grooves which are opposite to each other, each terminal groove penetrates through the butt joint end, the mounting end and the first surface, so that the terminal groove is provided with an upper inner wall surface, a lower inner wall surface and side inner wall surfaces connected with the upper inner wall surface and the lower inner wall surface, each signal terminal is accommodated in one corresponding terminal groove, the butt joint part of each signal terminal pair is positioned between the upper inner wall surface and the side inner wall surface of the corresponding terminal groove, the shielding sheet is attached to the first surface, a plurality of elastic arms extend out of the shielding sheet, and the elastic arms extend into the terminal grooves and are positioned on the upper side and/or the lower side of the butt joint part of each signal terminal pair.

Compared with the prior art, the conductive support part is a conductive body, provides three-faced shielding effects for each signal terminal pair, simplifies the manufacturing and meets the high-frequency performance.

[ description of the drawings ]

Fig. 1 is a perspective view of a backplane connector assembly of the present invention.

Fig. 2 is a partially enlarged view shown in a circle in fig. 1.

Fig. 3 is a partially enlarged perspective view of the signal terminals and the shielding plate of the first backplane connector and the signal terminals and the U-shaped members of the second backplane connector.

Fig. 4 is an enlarged partial cross-sectional view of the first and second backplane connectors after mating.

Fig. 5 is an enlarged partial cross-sectional view of another angle of the first and second backplane connectors after mating.

Fig. 6 is an exploded perspective view of the first backplane connector.

Fig. 7 is a perspective view of the holder body of fig. 6 at another angle.

Fig. 8 is a perspective view of the conductive sheet of fig. 6.

Fig. 9 is a perspective view of the conductive support member of fig. 8.

Fig. 10 is a perspective view of the terminal module of fig. 8.

Fig. 11 is an exploded perspective view of the terminal module of fig. 10.

Fig. 12 is a perspective view of the shield plate of fig. 8.

Fig. 13 is a partial exploded perspective view of the second backplane connector.

Fig. 14 is a partial enlarged view shown in a circle in fig. 13.

Fig. 15 is a perspective view of the U-shaped member of fig. 13 at another angle.

Fig. 16 is a partial exploded perspective view of fig. 13.

Fig. 17 is a perspective view of the conductive sheet and the U-shaped member.

Fig. 18 is an exploded perspective view of fig. 17.

Fig. 19 is an exploded perspective view of the conductive support and terminal module of fig. 18.

Fig. 20 is an exploded perspective view of the terminal module of fig. 19.

Fig. 21 is a cross-sectional view of the terminal of fig. 20.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Referring to fig. 1, the present invention discloses a backplane connector assembly, which includes two backplane connectors butted against each other, and for convenience of distinction, the two

backplane connectors

100 and 300 are respectively defined as a first backplane connector 100 (or simply referred to as a first connector) and a second backplane connector 300 (or simply referred to as a second connector), and the two

backplane connectors

100 and 300 are respectively mounted on circuit boards 701 and 702, and the basic architecture is similar, and each backplane connector assembly includes a base 10/30 and a plurality of conductive sheets 20/40 stacked side by side, each of the conductive sheets has a butt end and a mounting end, the butt end is inserted into the base for butt connection with the other backplane connector, the mounting end is mounted on the circuit board, and the butt end and the mounting end are orthogonal to each other, that is, a so-called right angle connector. In the following description, for convenience of description, the horizontally placed circuit boards are used as a reference, the direction of mutual butt joint is the front, the opposite direction is the rear, the direction close to the circuit boards is the lower direction, and the opposite direction is the upper direction.

The front end of the first connector 100 is inserted into a mating cavity 301 formed at the front end of the second connector 300, the upper and lower surfaces of the front end of the first connector are formed with guide ribs 15 extending in the front-rear direction, and the guide ribs 15 are inserted into guide grooves 35 formed on the inner wall surface of the mating cavity 301 of the second connector, thereby completing the mating of the two connectors. The tongue plate 34 (shown in fig. 2) of the second connector 300 protruding into the mating cavity 301 is inserted into the mating hole 14 (shown in fig. 6) of the first connector 100, thereby completing the mechanical and electrical connection. The differences in the details of the first and second backplane connectors are described in more detail below.

Referring to fig. 6-7, the first connector 100 includes a base 10 and a plurality of conductive sheets 20 arranged in a stacked manner. The pedestal 10 includes antetheca 11 and four lateral walls 12, and four lateral walls 12 enclose and establish into a rearwardly open chamber 13 of acceping, butt joint hole 14 runs through antetheca 11 along the fore-and-aft direction, and the butt joint hole that is the matrix arrangement is the lengthwise form of vertical setting, and the terminal hole of adjacent row is skew setting from top to bottom, and the terminal hole 14 of same row then the level aligns. The guide ribs 15 are provided on the outer wall surfaces of the upper and lower side walls. The upper and lower inner walls of the receiving cavity 13 are provided with a plurality of guide grooves 16, the conductive sheet 20 is provided at the upper and lower edges thereof with guide ribs 26, the guide ribs 26 are inserted into the guide grooves 16, thereby mounting the conductive sheet 20 to the housing 10, wherein both sides of the guide ribs 26 are provided at the rear ends thereof with fixing protrusions 261 protruding outward, the fixing protrusions 261 are caught in fixing recesses 161 provided at the corresponding positions of the guide grooves, and the fixing recesses 161 penetrate the side walls 12 upward or downward at the same time.

Referring to fig. 8-12, the conductive sheet 20 has a mating end 201 and a mounting end 202, and includes a conductive support 21, a plurality of signal terminal pairs 22 and a shielding sheet 24, which are assembled to form a vertical sheet. The conductive support 21 has a first surface 211 and a second surface (not numbered) opposite to the first surface 211, and a plurality of terminal slots 213, each terminal slot 213 penetrates the mating end 201, the mounting end 202 and the first surface 211, so that the terminal slots have an upper inner wall surface 214, a lower inner wall surface 215 and a side inner wall surface 216 connecting the upper and lower inner wall surfaces. In the embodiment, the conductive supporting element 21 is formed by forging/compacting a metal material, or may be formed by injection molding a conductive plastic material, or formed by injection molding an insulating material and then coating the insulating material with a conductive material by means of electroplating or the like. Each of the signal terminal pairs 22 is received in a corresponding one of the terminal slots 213. Each signal terminal pair 22 is composed of two

signal terminals

22a and 22b (typically, differential signal terminals) and is embedded in an insulator 23, each signal terminal includes a butting portion 221, a mounting portion 223, and an intermediate portion 222 connecting the butting portion and the mounting portion, the butting portion 221 and the mounting portion 223 are exposed outside the insulator 23, and the intermediate portion 222 is at least partially embedded in the insulator 23. The mating portion 221 of each signal terminal pair 22 is located on the upper and lower

inner wall surfaces

214, 215 and the vertical inner wall surface 216 of the corresponding terminal groove 213. In the present embodiment, the signal terminals are formed by stamping a vertical metal plate, the middle portion 222 is located in the plane of the metal plate, the distance between the two

signal terminals

22a and 22b in each signal terminal pair is smaller than the distance between the adjacent signal terminal pairs, the width of the middle portion 222 is larger than that of the mating portion 221 and the mounting portion 223, and the length of the middle portion 222 gradually decreases from top to bottom and has a turning angle 2221, and the width of the turning angle decreases. The insulator 23 is wrapped around the middle portion 222 by injection molding to form a terminal module, and as can be seen from fig. 11, the insulator 23 is mainly wrapped around the corner 2221, the connection portion between the middle portion and the mating portion, the connection portion between the middle portion and the mounting portion, and other portions that need to be forced, or the portions where the signal terminals are fixed are reinforced. The two mating portions 221 of each signal terminal pair 22 are arranged in an upper row and a lower row, each mating portion is vertical and has a contact point 2211 protruding away from the side inner wall surface 216. The insulator 23 is provided with a reinforcement 231 protruding forward adjacent to the abutting end 201, and the abutting portion 221 passes through the reinforcement 231.

The shielding sheet 24 is attached to the first surface 211. The shielding plate 24 extends to form a plurality of elastic arms 241, which extend into the terminal slots 213 and are located on the upper side and/or the lower side of the mating portion 211 of each signal terminal pair. In the present embodiment, the shielding plate 24 is provided with an extending portion 242 protruding toward the abutting end, two elastic arms 241 extend from the upper edge and the lower edge of the extending portion 242 respectively and are adjacent to the upper inner wall surface 214 and the lower inner wall surface 215 respectively, the extending portion 242 is adjacent to the joint of the abutting portion 221 and the middle portion 222, that is, the extending portion 242 covers the reinforcing portion 231. The two resilient arms 242 are horizontal and are provided with a face-to-face convex contact point 2411 at their free ends. The shielding sheet 24 is provided at the abutting end thereof with a plurality of connecting portions 243 which are bent to one side and then extend downward, one or two mounting legs 244 which extend downward from each connecting portion, and an extending portion 245 which extends vertically downward is reserved between the adjacent connecting portions. Referring to fig. 9, the conductive support 20 has a mounting face 218 at the mounting end that mates with the circuit board, the mounting face 218 being raised upward, and the mounting face 232 of the insulator 23 at the mating end 202 being lower than the mounting face 218 of the conductive support. That is, the conductive supporting member has a rear bottom surface through which the mounting portion of the signal terminal passes and a front bottom surface closer to the contact terminal than the rear bottom surface, and the front bottom surface protrudes downward than the rear bottom surface. Thus, after the conductive sheet 20 is mounted on the circuit board, the mounting surface 218 of the conductive support is spaced apart from the circuit board 701 by a distance, so that the conductive support is filled with air, thereby reducing the coupling amount between the signal terminals and the shielding plate or the grounding member and reducing crosstalk. The conductive support piece forms a U-shaped terminal groove structure, so that the signal terminal pair is surrounded by the shielding structure in the first connector in three faces, and after the signal terminal pair is matched with the U-shaped piece of the second connector, the fourth face is also shielded. More specifically, the middle portion 222 is surrounded by a four-side shielding structure formed by the conductive support and the shielding sheet, and the docking portion 221 is surrounded by a four-side shielding structure formed by the conductive support and the U-shaped member.

Referring to fig. 9, the adjacent terminal slots 213 are separated by a spacer rib 217, the spacer rib 217 includes a front section 2711 corresponding to the abutting portion 221 and a rear section 2172 corresponding to the middle portion 222, wherein the front section 2171 is provided with a recess 2173 at upper and lower inner wall surfaces of the corresponding terminal slot 213, the elastic arm 241 is located in the recess 2173, the rear section 2172 is provided with a slot 2174 matching the shape of the rear section and dividing the rear section into two parts, and the connecting strip 233 of the insulator between the adjacent signal terminal pairs is received in the slot 2174. The front end of the recess is further provided with a recess 2175 for receiving the contact 2211.

In an embodiment, the second surface of the conductive support may also be provided with a terminal groove, the signal terminal is accommodated in the terminal groove, and the other shielding plate covers the second surface.

The second connector 300 has a similar housing and conductive sheet structure, and for convenience of description, the similar structure is given the same name, but the reference numerals are different.

Referring to fig. 13-16, in conjunction with fig. 2, the second connector 300 includes a housing 30, a plurality of conductive sheets 40 arranged in a stacked vertical side-by-side arrangement, and a plurality of U-shaped members 50. The housing 30 includes a middle wall 31 and four side walls 32, the four side walls enclose a docking chamber 301 and a receiving chamber 33 in front of the middle wall, the docking chamber 301 is open forward, and the receiving chamber 33 is open backward. The left and right inner walls of the docking cavity 301 are provided with the aforementioned plurality of guide grooves 35 (see fig. 1), the upper and lower inner walls of the accommodating cavity 33 are provided with a plurality of guide grooves 36, the conductive sheet 40 is provided with guide ribs 46 at the upper and lower edges thereof, the guide ribs 46 are inserted into the guide grooves 36, so as to mount the conductive sheet 40 to the housing 30, wherein the guide ribs 46 are also provided with fixing protrusions for fixing the fixing recesses provided in the guide grooves. The accommodating cavity is provided with a plurality of fixing grooves 37 on the left and right inner wall surfaces, a metal thin plate 60 is attached to the left and right outermost conductive sheets at the position close to the butt joint end, a bump 61 is punched out of the metal thin plate from inside to outside, and the bump 61 is fixed in the fixing grooves 37. A plurality of tongues 34 project forward into the docking chamber 301 from the intermediate wall 31, each tongue being vertically disposed, the tongues in adjacent rows being offset vertically, the tongues 34 in the same row being aligned horizontally. Each tongue plate 34 has two opposite wide surfaces 341 and two opposite narrow surfaces 342, and each tongue plate 34 is provided with two butt-joint grooves 343 which penetrate through the tongue plate forward, penetrate through one wide surface 341 of the tongue plate laterally and penetrate through the tongue plate backward. The intermediate wall 31 is further provided with a U-shaped groove 38 which extends through the rear, the front and the right way along the other broad side 341 and the two narrow sides 342 of the tongue.

The U-shaped member 50 includes a wide wall 51 and narrow walls 52 extending perpendicularly from opposite sides of the wide wall, the narrow walls projecting rearwardly from the wide wall, the front wide wall and the narrow walls forming a U-shaped portion 53, the narrow walls behind the wide walls forming a fixing portion 54, the fixing portion having a plurality of fixing protrusions 541. The U-shaped element 50 is inserted and fixed in the U-shaped groove 38, and the fixing portion 54 is exposed in the receiving cavity 33. The U-shaped portion 53 surrounds just one broad surface 341 and two narrow surfaces 342 of the tongue plate 34 when viewed from the front, the broad surface where the signal terminal 20 is located has no U-shaped member, and the contact point 2211 of the signal terminal protrudes out of the broad surface 341. As can be seen from fig. 2 and 14, the front end of the U-shaped portion further protrudes forward to form a protruding portion 531, the front end of the U-shaped portion is retreated by a distance from the front end of the tongue plate, and the protruding portion 531 helps to enhance the holding force between the front end of the U-shaped portion and the tongue plate. The wide surface of the U-shaped part is provided with a convex rib 532, so that the holding force of the U-shaped part and the seat body is enhanced, and the strength of the U-shaped part is increased.

Fig. 17 shows the positional relationship between the conductive sheets 40 and the U-shaped member 50, the U-shaped member 50 is first installed on the housing 30, the front ends of the left and right stacked conductive sheets 40 are then installed in the accommodating cavity 33, the abutting portions 421 of the signal terminals of the conductive sheets protrude forward out of the abutting ends and pass through the abutting grooves 343 and are arranged on the broad surface 341 of the tongue plate 34, the fixing portions 54 of the U-shaped member are then interferingly fixed on the shallow recesses 415 formed on the two sides of the abutting ends of the conductive sheets 40, the U-shaped member is made of metal plate, the conductive sheets are also conductive, and the two are electrically connected.

Referring to fig. 18-21, the conductive sheet 40 includes a conductive support 41, a plurality of signal terminal pairs 42 and a shielding sheet 44, which are assembled to form a vertical sheet. The conductive supporting member 41 has a first surface 411 and a second surface (not numbered), and a plurality of terminal slots 413, wherein each terminal slot 413 penetrates through the mating terminal, the mounting terminal and the first surface 411. The spacing rib forming the terminal groove 413 has a widened portion 414 adjacent to the butt end, the widened portion being relatively wide with respect to the other portion of the spacing rib, and both right and left vertical surfaces of the widened portion are provided with the above-described shallow recesses 415. Each of the signal terminal pairs 42 is received in a corresponding one of the terminal grooves 413. Each signal terminal pair 42 is composed of two differential signal terminals and is embedded in an insulator 43, each signal terminal includes a butt-joint portion 421, a mounting portion 423 and a middle portion 422 connecting the butt-joint portion and the mounting portion, the butt-joint portion 421 and the mounting portion 423 are exposed outside the insulator 43, and the middle portion 422 is at least partially embedded in the insulator 43. The signal terminals are formed by punching a vertical metal plate, the middle part 422 is located in the metal plate plane where the metal plate is located, the distance between two signal terminals in each signal terminal pair is smaller than the distance between the adjacent signal terminal pairs, the width of the middle part is larger than that of the butt joint part and the installation part, and the length of the middle part is gradually reduced from top to bottom and is provided with a turning angle. The insulator 43 is wrapped around the middle portion by injection molding, and as can be seen from fig. 20, the insulator 43 mainly wraps around the portions that need to be applied with force, such as the corner, the connection between the middle portion and the abutting portion, and the connection between the middle portion and the mounting portion, or the portions for fixing the signal terminals in a reinforced manner. In the present embodiment, the insulator is formed by integrally molding all the terminals with the insulating material, and all the terminals are integrally connected to the insulator to form the terminal module. The two mating portions of each signal terminal pair 42 are bent to be arranged in a left-right arrangement. Specifically, the transition portion 424 between the mating portion and the intermediate portion is changed in direction by a transition portion 424, the transition portion 424 of the signal terminal located above includes a horizontal portion 425 located at the rear end of the mating portion, the front end of the intermediate portion is narrowed to a narrowed portion 4221, the inner edge of the rear end of the horizontal portion and the upper edge of the narrowed portion at the front end of the intermediate portion are connected by an arc portion 426, and the horizontal portion 425 is three-segment and includes an upper horizontal portion 4253, an inclined portion 4252 and a lower horizontal portion 4251. Similarly, the transition portion 424 of the lower signal terminal is located on the other side of the middle portion, and the horizontal portion rises from bottom to top layer by layer, so that the abutting portions of the two signal terminals are located at the same horizontal height. The front free end of the docking portion 421 is provided with an upwardly extending contact point 4211. As can be seen from the figure, a slope 427 is also used between the abutting portion and the horizontal portion to raise the height of the abutting portion 421. The two horizontal portions 425 are located on both sides of the metal plate surface, respectively. The insulator has a plurality of reinforcement portions 431 in which the transition portions 424 are fixed and from which the abutment portions 421 project.

The mating process of the first and

second connectors

100 and 300 will be described below. Due to the problem of circuit board arrangement, the second connector 300 needs to be rotated 90 degrees reversely, after the two connectors are mated, the

mating portions

221, 421 of each signal terminal pair are elastically mated with each other, the contact points 2211, 4211 protruding in an arc shape respectively contact the horizontal section at the rear section of the contact points, and the elastic arm 241 elastically contacts the outer surface of the narrow wall 52 of the U-shaped part. As can be seen from fig. 5, the extension 242 projects forward than the reinforcement 231 of the insulator 23 so that the extension 242 can abut against the front end of the tongue plate.

The above description is only one embodiment of the present invention, and not all or only one embodiment, and any equivalent changes to the technical solution of the present invention, which are made by a person skilled in the art through reading the description of the present invention, are covered by the claims of the present invention.

Claims

1. A backplane connector comprises at least one conductive sheet, wherein the conductive sheet is provided with a butt joint end and a mounting end, the conductive sheet comprises a conductive support piece, a plurality of signal terminal pairs and a shielding sheet, each signal terminal pair consists of two signal terminals and is embedded in an insulator, each signal terminal comprises a butt joint part, a mounting part and a middle part for connecting the butt joint part and the mounting part, the butt joint part and the mounting part are exposed out of the insulator, and at least part of the middle part is embedded in the insulator; the method is characterized in that: the conductive support member is provided with a first surface, a second surface and a plurality of terminal grooves, each terminal groove penetrates through the butt joint end, the mounting end and the first surface, so that the terminal groove is provided with an upper inner wall surface, a lower inner wall surface and a side inner wall surface connected with the upper inner wall surface and the lower inner wall surface, each signal terminal pair is accommodated in one corresponding terminal groove, the butt joint part of each signal terminal pair is positioned between the upper inner wall surface and the side inner wall surface of the corresponding terminal groove, the shielding sheet is attached to the first surface, a plurality of elastic arms extend out of the shielding sheet, and the elastic arms extend into the terminal grooves and are positioned on the upper side and/or the lower side of the butt joint part of each signal terminal pair.

2. The backplane connector of claim 1, wherein: the two butt joint parts of each signal terminal pair are arranged up and down.

3. The backplane connector of claim 2, wherein: each butt joint part is vertical and is provided with a contact point which is protruded in a direction deviating from the inner wall surface of the side.

4. The backplane connector of claim 2, wherein: the shielding piece is provided with an extending part protruding towards the butt joint end, the two elastic arms respectively extend from the upper edge and the lower edge of the extending part and respectively approach the upper inner wall surface and the lower inner wall surface, and the extending part approaches the joint part and the joint part of the middle part.

5. The backplane connector of claim 4, wherein: the two resilient arms are horizontal and provided with a face-to-face projecting contact point at their free ends.

6. The backplane connector of claim 1, wherein: the conductive supporting piece is provided with a rear bottom surface for the installation part of the signal terminal to pass through and a front bottom surface which is closer to the contact end than the rear bottom surface at the installation part of the conductive supporting piece, and the front bottom surface protrudes downwards than the rear bottom surface.

7. The backplane connector of claim 1, wherein: the adjacent terminal grooves are separated by spacing ribs, the spacing ribs comprise front section parts corresponding to the butt joint parts and rear section parts corresponding to the middle parts, recessed parts are arranged at the upper inner wall surfaces and the lower inner wall surfaces of the front end parts corresponding to the terminal grooves, and the elastic arms are located in the recessed parts.

8. A backplane connector assembly comprises a first backplane connector and a second backplane connector which are mutually butted, wherein the first backplane connector and the second backplane connector comprise a seat body and at least one conductive slice for installing the seat body, the conductive slice is provided with a butt joint end and an installation end, the conductive slice comprises a conductive support piece, a plurality of signal terminal pairs and a shielding piece, each signal terminal pair consists of two signal terminals and is embedded in an insulator, each signal terminal comprises a butt joint part, an installation part and a middle part for connecting the butt joint part and the installation part, the butt joint part and the installation part are exposed out of the insulator, and at least part of the middle part is embedded in the insulator; the method is characterized in that: the conductive support piece is provided with a first surface, a second surface and a plurality of terminal grooves, wherein the first surface and the second surface are opposite to each other, each terminal groove penetrates through the butt joint end, the mounting end and the first surface, and each signal terminal is accommodated in one corresponding terminal groove; in the first backplane connector, the butt-joint part of the signal terminal pair is shielded in three directions by the inner wall surface of the terminal groove, and the shielding piece is attached to the first surface and provides four-faced shielding for the middle part of the signal terminal together with the conductive support piece; the second backplane connector further comprises a U-shaped piece and a plurality of tongue plates extending from the base body, the butt joint part of each signal terminal is arranged on a corresponding tongue plate, and the U-shaped piece is fixed on the tongue plates and surrounds the butt joint part; the U-shaped member provides a fourth facing shield to the mating portion of the first backplane connector after mating of the first and second backplane connectors.

9. The backplane connector assembly of claim 8, wherein: the butt joint part of each signal terminal pair of the second backplane connector is exposed on one surface of the tongue plate, and the U-shaped piece is attached to the other three surfaces of the tongue plate, which are not provided with the butt joint parts.

10. The backplane connector assembly of claim 9, wherein: the U-shaped part comprises a wide wall and two narrow walls, wherein the front ends of the wide wall and the narrow walls are provided with protrusions, and the protrusions are embedded in the tongue plate.