Transfer board and connecting piece

Abstract

The present invention discloses a transmission board and a connector, wherein the transmission board includes: an insulating carrier; a pair of differential channels, including a first channel and a second channel, the inner sides of the first channel and the second channel are spaced apart and coupled to each other, the first channel has a timing compensation section and a connection section connected to the timing compensation section, defining the distance between the inner side of the timing compensation section and the inner side of the second channel as a first distance, defining the distance between the inner side of the connection section and the inner side of the second channel as a second distance, and the first distance is greater than the second distance; a grounding structure disposed on the insulating carrier, and the grounding structure is located between the inner side of the timing compensation section and the inner side of the second channel. The present invention can improve the transmission time delay of a pair of differential signals, and at the same time can improve the impedance consistency between the first channel and the second channel, reducing signal reflection and signal loss.

Description

Technical Field

[0001] The present invention relates to a transmission board and a connector, and more particularly to a transmission board and a connector that can improve the time difference of differential signal transmission and the impedance consistency of differential conductors.

Background Art

[0002] A known connector includes two signal conductors for transmitting a pair of differential signals. Each of the signal conductors includes a contact portion, a conducting portion, and a connecting portion connecting the contact portion and the conducting portion. Due to various factors, there will be a difference in the transmission path lengths of the two signal conductors, resulting in a large signal transmission time delay between the two signal conductors, which is likely to cause signal distortion or misjudgment. For this reason, the industry usually sets a serpentine bending section on the originally shorter signal conductor that bulges out relative to the originally longer signal conductor, thereby extending the transmission path of the originally shorter signal conductor, and then reducing the difference in the transmission path lengths between the two signal conductors and reducing the time delay.

[0003] However, due to the setting of the serpentine bending section, there is a large difference in the distance between the two signal conductors at different positions, resulting in poor impedance consistency at different positions of the two signal conductors, causing a large signal reflection, which is not conducive to the transmission of a pair of differential signals.

[0004] Therefore, it is necessary to design a new transmission board and connector to overcome the above problems.

Summary of the Invention

[0005] The creative purpose of the present invention is to provide a transmission board that can extend the transmission path of the first channel of the transmission board through a timing compensation section, thereby reducing the difference in the transmission path lengths between the first channel and the second channel, reducing the transmission time delay of a pair of differential signals, and adjusting the capacitance effect between the timing compensation section and the second channel through a grounding structure, adjusting the impedance, improving the impedance consistency at different positions of the first channel and the second channel, and reducing signal reflection. The present invention also provides a connector. Similarly, the signal transmission time delay between the first conductor and the second conductor is reduced through the timing compensation section of the first conductor, and the capacitance effect between the timing compensation section and the second conductor is adjusted through the grounding structure, adjusting the impedance, and reducing signal reflection.

[0006] To achieve the above object, the present invention adopts the following technical solution: A transmission board, comprising: an insulating carrier; a pair of differential channels, including a first channel and a second channel which are arranged adjacent to each other on the insulating carrier, the inner sides of the first channel and the second channel are spaced apart and coupled to each other, the first channel has at least one timing compensation section and at least one connection section connected to the timing compensation section, defining the distance between the inner side of the timing compensation section and the inner side of the second channel as a first distance, defining the distance between the inner side of the connection section and the inner side of the second channel as a second distance, the first distance is greater than the second distance, and the timing compensation section is bent away from the second channel relative to the connection section; at least one grounding structure is arranged on the insulating carrier, and when viewed in a vertical direction perpendicular to the board surface of the transmission board, the grounding structure located between the first channel and the second channel in the pair of differential channels is only arranged between the inner side of the timing compensation section and the inner side of the second channel, and the grounding structure is not located between the inner side of the connection section and the inner side of the second channel.

[0007] Further, both the first channel and the second channel have a contact portion, a conducting portion, and an intermediate portion that bends and extends between the contact portion and the conducting portion, the extending direction of the contact portion is perpendicular to the extending direction of the conducting portion, the timing compensation section is located in the intermediate portion of the first channel, the intermediate portion of the second channel has a coupling section, the inner side of the coupling section faces the inner side of the timing compensation section, the transmission path length of the coupling section is less than the transmission path length of the timing compensation section, and the transmission path lengths of the first channel and the second channel are equal.

[0008] Further, when viewed in the side-by-side direction of the timing compensation section and the second channel, the projection of the grounding structure overlaps with the inner side of the timing compensation section, and the projection of the grounding structure overlaps with the inner side of the second channel; when viewed in an observation direction perpendicular to the side-by-side direction and the vertical direction, the grounding structure is located between the inner side of the timing compensation section and the inner side of the second channel.

[0009] Further, when viewed in the vertical direction, the distance between an outer edge of the grounding structure and the inner side of the timing compensation section is equal to the distance between an outer edge of the grounding structure and the inner side of the second channel.

[0010] Further, the grounding structure has an outer edge adjacent to the inner side of the timing compensation section, and the line of the outer edge coincides with the line of the inner side of the timing compensation section throughout its entire extension length.

[0011] Further, the second channel has a coupling section extending linearly, the inner side of the coupling section faces the inner side of the timing compensation section, the first channel has at least two of the connection sections, and the timing compensation section is connected between the two connection sections; the timing compensation section includes a first turning section connected to one of the connection sections and extending away from the coupling section, a first vertical section connected to the first turning section and perpendicular to the coupling section, a second vertical section spaced apart from and parallel to the first vertical section, a second turning section connecting the second vertical section and the other connection section, and a connecting section connecting the first vertical section and the second vertical section, the connecting section having a parallel portion parallel to the coupling section; the distances between the outer edge of the grounding structure and the inner side of the first turning section, the inner side of the first vertical section, the inner side of the parallel portion, the inner side of the second vertical section, and the inner side of the second turning section are all equal.

[0012] Further, the first spacing is not less than 1.5 times the second spacing and not greater than 3 times the second spacing.

[0013] Further, the grounding structure includes a grounding conductive layer and / or a grounding hole. Among them, the grounding conductive layer is parallel to the plate surface of the transmission board, the grounding hole is recessed along the vertical direction, and the inner wall of the grounding hole is provided with a conductive material connecting to the ground potential.

[0014] Compared with the prior art, a transmission board provided by the present invention has the following beneficial effects:

[0015] By means of the timing compensation section, the transmission path length of the first channel is extended, the size difference between the transmission path length of the first channel and the transmission path length of the second channel is reduced, and further the signal transmission time delay between the first channel and the second channel is reduced, which is beneficial for the system to process and analyze paired differential signals and reduces the risk of signal loss or distortion; further, in order to reduce the impedance consistency of the first channel and the second channel on the entire transmission path affected by the fact that the first spacing is greater than the second spacing, the present invention provides a reference ground potential between the timing compensation section and the second channel through the grounding structure provided between the timing compensation section and the second channel, adjusts the capacitance effect between the timing compensation section and the second channel, and further helps to reduce the impedance of the timing compensation section and the impedance of the portion corresponding to the coupling of the timing compensation section in the second channel, which is beneficial for impedance matching at different positions of the first channel and the second channel, improves the impedance consistency of the first channel and the second channel at different positions, and reduces signal reflection and loss.

[0016] To achieve corresponding purposes, the present invention also provides another technical solution: a connector, comprising: an insulating carrier; a first conductor and a second conductor for carrying a pair of differential signals, the first conductor and the second conductor are arranged adjacent to each other and fixed on the insulating carrier, the inner sides of the first conductor and the second conductor are coupled to each other, both the first conductor and the second conductor have a contact portion for contacting a first electrical component, a conducting portion for connecting to a second electrical component, and an intermediate portion connecting the contact portion and the conducting portion, the intermediate portions of the first conductor and the second conductor are in the same plane, the intermediate portion of the first conductor includes at least a timing compensation segment and at least a connection segment connected to the timing compensation segment, the timing compensation segment is bent away from the second conductor relative to the connection segment, defining the distance between the inner side of the timing compensation segment and the inner side of the second conductor as a first distance, and defining the distance between the inner side of the connection segment and the inner side of the second conductor as a second distance, the first distance is greater than the second distance; a grounding structure arranged on the insulating carrier, when viewed along a vertical direction perpendicular to the plane, the grounding structure between the first conductor and the second conductor carrying a pair of differential signals is only arranged between the inner side of the timing compensation segment and the inner side of the second conductor, and the grounding structure is not located between the inner side of the connection segment and the inner side of the second conductor.

[0017] Further, the connector is a circuit board, and the grounding structure includes a grounding conductive layer and / or a grounding hole. Wherein, the grounding conductive layer is parallel to the plane, the grounding hole is recessed along a direction perpendicular to the plane, and the inner wall of the grounding hole is provided with a conductive material connecting to the ground potential.

[0018] Further, the transmission path lengths of the first conductor and the second conductor are equal, and a part of the second conductor is coupled to the timing compensation segment facing each other along a side-by-side direction; when viewed along the side-by-side direction, the projection of the grounding structure overlaps with the projection of the inner side of the timing compensation segment and overlaps with the projection of the inner side of the second conductor; when viewed along an observation direction perpendicular to the vertical direction and the side-by-side direction, the grounding structure is located between the inner side of the timing compensation segment and the inner side of the second conductor.

[0019] Further, when viewed along the direction perpendicular to the plane, the distance between an outer edge of the grounding structure and the inner side of the timing compensation segment is equal to the distance between the outer edge of the grounding structure and the inner side of the second conductor.

[0020] Further, the grounding structure has an outer edge disposed adjacent to the inner side of the timing compensation section, and the lines of the outer edge coincide with the lines of the inner side of the timing compensation section over the entire extension length.

[0021] Further, both the first conductor and the second conductor are terminal structures. The connecting member includes a shielding sheet located on one side of the plane. The shielding sheet is electrically isolated from the first conductor and the second conductor. The shielding sheet is provided with a main body portion and the grounding structure extending from the main body portion towards the spaced area between the inner side of the timing compensation section and the inner side of the second conductor.

[0022] Compared with the prior art, a connecting member provided by the present invention has the following beneficial effects:

[0023] By means of the timing compensation section, the transmission path length of the first conductor is extended, the size difference between the transmission path length of the first conductor and the transmission path length of the second conductor is reduced, and further the signal transmission time delay between the first conductor and the second conductor is reduced, which is beneficial for the system to process and analyze paired differential signals and reduces the risk of signal loss or distortion. Further, in order to reduce the impedance consistency of the first conductor and the second conductor over the entire transmission path affected by the fact that the first spacing is greater than the second spacing, the present invention provides a reference ground potential between the timing compensation section and the second conductor through the grounding structure provided between the timing compensation section and the second conductor, adjusts the capacitance effect between the timing compensation section and the second conductor, and further helps to reduce the impedance of the timing compensation section and the impedance of the portion of the second conductor corresponding to and coupled with the timing compensation section, which is beneficial for impedance matching at different positions of the first conductor and the second conductor, improves the impedance consistency of the first conductor and the second conductor at different positions, and reduces signal reflection and loss. In addition, the middle portions of the first terminal and the second terminal are located in the same plane, which is beneficial for signal coupling of a pair of differential terminals.

Description of the Drawings

[0024] Figure 1 A three-dimensional schematic diagram of the connecting member provided by the first embodiment of the present invention;

[0025] Figure 2 A plan schematic diagram of the connecting member provided by the first embodiment of the present invention observed in a direction perpendicular to the board surface;

[0026] Figure 3 A plan schematic diagram of observing the middle portions of the first channel and the second channel in the connecting member in a direction perpendicular to the board surface according to the first embodiment of the present invention;

[0027] Figure 4 ForFigure 3 Enlarged view of part A;

[0028] Figure 5 Stereoscopic schematic diagram of two pairs of differential channels provided by the first embodiment of the present invention;

[0029] Figure 6 Partial sectional plan view of the connector provided by the first embodiment of the present invention;

[0030] Figure 7 Partial sectional plan view of the connector provided by the second embodiment of the present invention;

[0031] Figure 8 Stereoscopic schematic diagram of the connector provided by the third embodiment of the present invention;

[0032] Figure 9 Stereoscopic schematic diagram of the connector provided by the third embodiment of the present invention after hiding the insulating carrier;

[0033] Figure 10 Partial plan view of the connector provided by the third embodiment of the present invention after hiding the insulating carrier;

[0034] Figure 11 Along Figure 10 Partial sectional view taken along line B-B of;

[0035] Figure 12 Impedance test diagram of one of the first channels when the grounding structure of a transmission board includes a grounding conductive layer and a grounding hole;

[0036] Figure 13 Impedance test diagram of one of the first channels when the grounding structure of a transmission board includes a grounding conductive layer and the grounding hole is removed;

[0037] Figure 14 Impedance test diagram of one of the first channels when a transmission board is not provided with a grounding structure.

[0038] Explanation of the reference numerals in the drawings of the specific embodiments:

[0039] In the first and second embodiments:

[0040]

[0041]

[0042] In the third embodiment:

[0043] Connector 100' Insulating carrier 1' Notch 11 Differential terminal 2' First terminal S1' Second terminal S2' Contact part 21' Middle part 22' Timing compensation section 221 Connection section 222 Coupling section 223 Conducting part 23' Inner side 24' Outer side 25' Shielding sheet 3' Main body part 31' Grounding structure 32' Grounding terminal 4' First end part 41' Grounding extension part 42' Second end part 43’ First spacing D1' Second spacing D2' Plane P1'

Specific Embodiments

[0044] To better understand the purpose, structure, features, and efficacy of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0045] A connector provided by the present invention includes multiple pairs of differential conductors. Each pair of the differential conductors includes a first conductor and a second conductor for carrying a pair of differential signals. Of course, in other embodiments, only one pair of differential conductors may be provided. The connector can be of various types. For example, the connector is a transmission board (i.e., a circuit board), and multiple pairs of differential channels are formed on the transmission board through a metal plating layer. At this time, multiple pairs of the differential channels are respectively used as multiple pairs of differential conductors of the connector. Another example is that the connector may also be a connection structure containing terminals, and the connector has multiple pairs of differential terminals. At this time, multiple pairs of the differential terminals are respectively used as multiple pairs of differential conductors of the connector. In the following, the present application mainly elaborates on these two types of connectors through three embodiments. However, in other embodiments, the connector may also be of other types.

[0046] Please refer to Figures 1 to 6 , this is a connector 100 provided by the first embodiment of the present application. To more conveniently understand the technical solution of the first embodiment of the present invention, the X-axis, Y-axis, and Z-axis in the three-dimensional coordinate axes are added to the accompanying drawings of the specification, and the three coordinate axes are perpendicular to each other pairwise. The connector 100 in this embodiment is a transmission board, and the transmission board includes an insulating carrier 1 and multiple pairs of differential channels 2 provided on the insulating carrier 1. Each pair of the differential channels 2 includes a first channel S1 and a second channel S2 that are adjacent and used to carry a pair of differential signals. The inner side 27 of the first channel S1 is spaced apart from and coupled to the inner side 27 of the second channel S2. The metal plating layer of the transmission board can be set as a single-layer plating layer, or a double-sided plating layer, or a multi-layer plating layer with two or more layers according to needs. The transmission board can be a mother board provided outside an electrical connector and electrically connected to the electrical connector, or a daughter board provided inside the electrical connector (for example, the daughter board is inside the electrical connector, and the terminals of the electrical connector are connected to a cable through the daughter board). The transmission board can also be fixed to the electrical connector and extend towards a docking connector for docking with the docking connector.

[0047] Please refer to Figures 1 to 3, each of the first channel S1 and the second channel S2 has a contact portion 21 for contacting a first electrical component (not shown, the same below), a conducting portion 23 for contacting a second electrical component (not shown, the same below), and an intermediate portion 22 connecting the contact portion 21 and the conducting portion 23. In this embodiment, the contact portion 21 and the conducting portion 23 are located in the first layer, the intermediate portion 22 is located in the second layer, and the contact portion 21 and the conducting portion 23 are connected to the intermediate portion 22 located in the second layer through a connection hole. It can be understood that in this embodiment, the intermediate portions 22 of the first channel S1 and the second channel S2 are located in the same plane P1, and the plane P1 is parallel to the board surface P0 of the transmission board. It should be noted that in other embodiments, the contact portions 21, the conducting portions 23, and the intermediate portions 22 of the first channel S1 and the second channel S2 may be distributed in the same layer of the transmission board, or may be distributed in three different layers respectively, which is not limited herein.

[0048] Please refer to Figures 4 to 6 , in this embodiment, in a pair of the differential channels 2, the first channel S1 has a timing compensation section 24 and two connection sections 25 connected to the timing compensation section 24. Define the distance between the inner side 27 of the timing compensation section 24 and the inner side 27 of the second channel S2 (i.e., the inner side 27 of the coupling section 26) as the first distance D1, and define the distance between the inner side 27 of the connection section 25 and the inner side 27 of the second channel S2 as the second distance D2. The first distance D1 is greater than the second distance D2, and the timing compensation section 24 is bent away from the second channel S2 relative to the connection section 25. Specifically, the second channel S2 has a coupling section 26 corresponding to the timing compensation section 24. The inner side 27 of the coupling section 26 is coupled face to face with the inner side 27 of the timing compensation section 24, and the timing compensation section 24 is bent away from the coupling section 26 relative to the connection section 25. For easy understanding, please refer to Figure 4 , in one pair of differential channels 2, the part of the first channel S1 located within the Figure 4 dotted rectangular area shown by the dotted line is the timing compensation section 24, and the part of the second channel S2 located within the Figure 4 dotted rectangular area shown by the dotted line is the coupling section 26. In other embodiments, the number of the timing compensation sections 24 of the first channel S1 may be greater than 1, and the number of the connection sections 25 may be 1 or greater than 2. Those skilled in the art can set the corresponding numbers of the timing compensation sections 24 and the connection sections 25 according to actual needs. It should be noted that the timing compensation section 24 may be a smooth arc structure or a polygonal bent extension structure.

[0049] Please refer to Figure 3 、 Figure 4 and Figure 6, the transmission board further has a grounding structure 3 disposed on the insulating carrier 1. When viewed in a vertical direction perpendicular to the board surface P0 of the transmission board, the grounding structure 3 is located between the inner side 27 of the timing compensation section 24 and the inner side 27 of the second channel S2, and the grounding structure 3 is not located between the inner side 27 of the connection section 25 and the inner side 27 of the second channel S2. It can be understood that the vertical direction is the board thickness direction of the transmission board in this embodiment, that is, the Z-axis direction of this embodiment. In this application, the timing compensation section 24 extends the transmission path length of the first channel S1, reduces the size difference between the transmission path length of the first channel S1 and the transmission path length of the second channel S2, and further reduces the signal transmission time difference between the first channel S1 and the second channel S2, which is beneficial for the system to process and analyze paired differential signals and reduce the risk of signal loss or distortion; since the first spacing D1 is greater than the second spacing D2, the capacitance effect between the timing compensation section 24 and the second channel S2 will be reduced relative to the capacitance effect between the connection section 25 and the second channel S2, resulting in an increase in the impedance of the timing compensation section 24 and the impedance of the coupling section 26 correspondingly provided in the second channel S2, leading to poor impedance consistency of the first channel S1 and the second channel S2 throughout the transmission path and large signal reflection and loss. In this application, further, the grounding structure 3 provided between the timing compensation section 24 and the second channel S2 provides a reference ground potential between the timing compensation section 24 and the second channel S2, so that there is a capacitance effect between the grounding structure 3 and the timing compensation section 24 and there is also a capacitance effect between the grounding structure 3 and the second channel S2, and the grounding structure 3 is conductive, adjusting the equivalent dielectric constant of the materials around the timing compensation section 24 and the second channel S2. Thus, the capacitance effect between the timing compensation section 24 and the second channel S2 is adjusted, which helps to reduce the impedance of the timing compensation section 24 and the impedance of the coupling section 26 in the second channel S2, is beneficial for impedance matching at different positions of the first channel S1 and the second channel S2, improves the impedance consistency of the first channel S1 and the second channel S2 at different positions, and reduces signal reflection and loss. Further, in order to make the performance of the transmission board better, the first spacing D1 is not less than 1.5 times the second spacing D2 and not greater than 3 times the second spacing D2, that is: (1.5×D2)≤D1≤(3×D2). Thus, in addition to improving the signal transmission time lag of a pair of differential channels 2, it can more effectively adjust the impedance at the timing compensation section 24 and the coupling section 26 and provide engineering feasibility.

[0050] It should be noted that when the timing compensation section 24 is not provided in the first channel S1, the transmission path length of the first channel S1 is less than that of the second channel S2. When the timing compensation section 24 is provided in the first channel S1, as may be illustrated in this embodiment, the transmission paths of the first channel S1 and the second channel S2 may be set to be of equal length; in other embodiments, it is also possible that the transmission paths of the first channel S1 and the second channel S2 are not of equal length, but the difference in the transmission path lengths of the pair of differential channels 2 can be reduced compared to when the timing compensation section 24 is not provided. Therefore, it can be understood that the present application does not limit that the timing compensation section 24 can completely eliminate the difference in the transmission path lengths between the first channel S1 and the second channel S2, as long as the difference in the transmission path lengths between the first channel S1 and the second channel S2 can be relatively reduced compared to when the timing compensation section 24 is not provided, so as to achieve a certain compensation for the front and rear timings of the signals of a pair of differential signals when they are received.

[0051] Please refer to Figure 2 and Figure 5 , for each of the first channel S1 and the second channel S2, the extending direction of the contact portion 21 is perpendicular to the extending direction of the conducting connection portion 23, and the middle portion 22 extends in a bent manner between the contact portion 21 and the conducting connection portion 23. Thus, the transmission board can form an orthogonal transmission board, such that the first electrical component and the second electrical component are orthogonal to each other and are connected by means of the transmission board. The timing compensation section 24 is located in the middle portion 22 of the first channel S1, the coupling section 26 is located in the middle portion 22 of the second channel S2, the transmission path length of the coupling section 26 is less than that of the timing compensation section 24, and the transmission path lengths of the first channel S1 and the second channel S2 are equal. In this application scenario of the orthogonal transmission board, if the timing compensation section 24 is not provided, the transmission path length of the first channel S1 will be significantly less than that of the second channel S2. In this embodiment, the timing compensation section 24 can make up for the transmission path length of the first channel S1 in this scenario, and the transmission path lengths of a pair of differential channels 2 are equal, which can minimize the signal transmission time lag between a pair of differential channels 2. Especially for a transmission board for transmitting high-frequency signals, a tiny transmission time lag is very likely to cause signal distortion or misjudgment. When this embodiment is applied to a high-frequency transmission environment, it can also effectively prevent signal distortion or misjudgment caused by the transmission time lag of differential signals.

[0052] Please refer to Figure 4 and Figure 6, in the paired first channel S1 and second channel S2, when viewed along the juxtaposed direction of the timing compensation section 24 and the second channel S2, the grounding structure 3 overlaps with the projection of the inner side 27 of the timing compensation section 24, and the grounding structure 3 overlaps with the projection of the inner side 27 of the second channel S2; and when viewed along an observation direction perpendicular to the juxtaposed direction and the vertical direction, the grounding structure 3 is located between the inner side 27 of the timing compensation section 24 and the inner side 27 of the second channel S2. In this embodiment, the grounding structure 3 has a ground potential surface facing the inner side 27 of the timing compensation section 24 and the inner side 27 of the coupling section 26, which can make the grounding structure 3 closer to the first channel S1 and the second channel S2, more effectively adjust the capacitance effect at the timing compensation section 24 and the coupling section 26, more effectively adjust the impedance of the timing compensation section 24 and the impedance of the coupling section 26, and thus more effectively improve the impedance consistency of the first channel S1 and the second channel S2. It should be noted that for different pairs of differential channels 2, due to the different positions of the timing compensation section 24 and the different extending manners of the first channel S1, the "juxtaposed direction of the timing compensation section 24 and the second channel S2" will also be different, and thus the "observation direction perpendicular to the juxtaposed direction and the vertical direction" will also be different. When the coupling section 26 extends in a straight line, the "observation direction perpendicular to the juxtaposed direction and the vertical direction" refers to the length direction of the coupling section 26. For example, in this embodiment, as Figure 4 shown, for one pair of shorter differential channels 2, the juxtaposed direction of the timing compensation section 24 and the second channel S2 is the Y-axis direction, and the observation direction is the X-axis direction; while for another pair of longer differential channels 2, the juxtaposed direction of the timing compensation section 24 and the second channel S2 is the X-axis direction, and the observation direction is the Y-axis direction.

[0053] Please refer to Figure 4 and Figure 6, the grounding structure 3 includes a grounding conductive layer 31 and a grounding hole 32. Among them, the grounding conductive layer 31 is parallel to the plate surface P0 of the transmission board, the grounding hole 32 is recessed along the vertical direction, and the inner wall of the grounding hole 32 is provided with a conductive material 321 connecting to the ground potential. Of course, in other embodiments, the grounding structure 3 may only be provided with the grounding hole 32 without the grounding conductive layer 31; it may also only be provided with the grounding conductive layer 31 without the grounding hole 32. For example, when only one end of the timing compensation section 24 is connected to the connection section 25 and the other end is the free end of the first channel S1, the grounding structure 3 only has the grounding conductive layer 31. In order to ground the grounding conductive layer 31, a connection hole can be provided on the outside 28 of the free end of the first channel S1 to connect the grounding conductive layer 31 to other grounding coatings through the connection hole to achieve grounding. At this time, since the connection hole is not provided between the timing compensation section 24 and the second channel S2, the grounding structure 3 only has the grounding conductive layer 31. It should be noted that the grounding hole 32 can be a through hole or a blind hole, as long as it removes the local material of the insulating carrier 1 and the inner wall is provided with a conductive material 321 connecting to the ground potential. Thus, by using the grounding conductive layer 31, a ground potential plane with a certain area can be easily formed on the transmission board, which can absorb more external interference signals and shorten the distance between the grounding structure 3 and the timing compensation section 24 and the second channel S2 to help adjust the impedance. For the setting of the grounding hole 32, since the grounding hole 32 removes some of the insulating materials around the timing compensation section 24 and the second channel S2 and its inner wall is provided with a grounding conductive material 321, it can adjust the equivalent dielectric constant of the materials around the timing compensation section 24 and the second channel S2, as well as the distance from the timing compensation section 24 and the coupling section 26 to the ground potential. Therefore, the capacitance effect can be comprehensively and synergistically changed by adjusting the equivalent dielectric constant and the distance, avoiding the impedance of the timing compensation section 24 and the corresponding section from being too low or too high, which is beneficial to improving the impedance consistency at various parts of the first channel S1 and the second channel S2. Of course, in other embodiments, the grounding structure 3 may not be formed on the metal coating of the transmission board, but a metal structure inserted or molded in the transmission board, and this metal structure is grounded.

[0054] Please refer to Figure 4, when viewed along the vertical direction, the distance (i.e., the third spacing D3) between an outer edge 28 of the grounding structure 3 and the inner side 27 of the timing compensation section 24 is equal to the distance (i.e., the fourth spacing D4) between an outer edge 28 of the grounding structure 3 and the inner side 27 of the second channel S2. Thus, in addition to helping impedance matching of the first channel S1 and the second channel S2 on their respective transmission paths, D3 = D4 can also help impedance and electric field balance between the first channel S1 and the second channel S2, and help impedance matching between the first channel S1 and the second channel S2, which is beneficial to signal coupling between a pair of differential channels 2. Further, the grounding structure 3 has an outer edge 28 adjacent to the inner side 27 of the timing compensation section 24, and the line of the outer edge 28 coincides with the line of the inner side 27 of the timing compensation section 24 throughout its entire extended length. Thus, when viewed along the vertical direction, throughout the entire extended length of the timing compensation section 24, a part of the grounding structure 3 is located between the timing compensation section 24 and the coupling section 26 of the second channel S2, more effectively adjusting the impedance at each position of the timing compensation section 24 and the impedance at each position of the coupling section 26 of the second channel S2. It should be noted that in this embodiment, the outer edge 28 of the grounding structure 3 is the outer edge formed by the grounding conductive layer 31, and the outer edge 28 of the grounding conductive layer 31 extends in a polygonal line. An outer edge 28 of the grounding structure 3 is adjacent to the inner side 27 of the timing compensation section 24, and the line of this outer edge 28 coincides with the line of the inner side 27 of the timing compensation section 24; in other embodiments, the grounding structure 3 may only have grounding holes 32. At this time, the outer edge 28 of the grounding structure 3 is the arc-shaped side edge surrounded by the conductive material 321 of the grounding holes 32, and the inner side 27 of the timing compensation section 24 may be an arc-shaped line that coincides with this arc-shaped side edge. It should be noted that the shape changes of the line of the outer edge 28 and the line of the inner side 27 of the timing compensation section 24 are basically the same, that is, they are regarded as coinciding.

[0055] Further, the coupling section 26 of the second channel S2 extends linearly, and the timing compensation section 24 includes a first turning section 241 connected to one of the connection sections 25 and extending away from the coupling section 26, a first vertical section 242 connected to the first turning section 241 and perpendicular to the coupling section 26, a second vertical section 244 spaced apart from and parallel to the first vertical section 242, a second turning section 245 connecting the second vertical section 244 and the other connection section 25, and a connecting section 243 connecting the first vertical section 242 and the second vertical section 244. In this embodiment, the connecting section 243 has a third turning section 2432 connected to the first vertical section 242, a parallel portion 2431 connected to the third turning section 2432 and parallel to the coupling section 26, and a fourth turning section 2433 connecting the second vertical section 244 and the parallel portion 2431. Of course, in other embodiments, the third turning section 2432 and the fourth turning section 2433 may not be provided in the connecting section 243. Further, the distances between the outer edge 28 of the grounding structure 3 and the inner side 27 of the first turning section 241, the inner side 27 of the first vertical section 242, the inner side 27 of the parallel portion 2431, the inner side 27 of the second vertical section 244, and the inner side 27 of the second turning section 245 are all equal. Compared with the timing compensation section 24 having a smooth arc structure, the timing compensation section 24 in this embodiment has a polygonal shape with multiple curved extensions, which facilitates the plating of a complete path of the timing compensation section 24 in the transmission board, and the timing compensation section 24 can extend a longer length within a certain distance bulging out relative to the coupling section 26. Therefore, it can better compensate the transmission path of the first channel S1 in a limited space, reduce the difference in the transmission path lengths between the first channel S1 and the second channel S2, and reduce the transmission time delay of a pair of differential channels 2.

[0056] Please refer to Figure 2 and Figure 3, the transmission board further includes a plurality of grounding channels 4 provided on the insulating carrier 1. Each grounding channel 4 includes a first grounding finger 41 located in the first layer and adjacent to the contact portion 21 of a pair of the differential channels 2, a grounding extension 42 located in the second layer and adjacent to the middle portion 22 of a pair of the differential channels 2, and a second grounding finger 43 located in the first layer and adjacent to the conducting portion 23 of a pair of the differential channels 2. In this embodiment, the first grounding finger 41 and the second grounding finger 43 located in the first layer are connected to the plurality of grounding channels 4 located in the second layer through connection holes. There is one first grounding finger 41 between the contact portions 21 of adjacent pairs of the differential channels 2, one second grounding finger 43 between the conducting portions 23 of adjacent pairs of the differential channels 2, and one grounding extension 42 between the middle portions 22 of adjacent pairs of the differential channels 2. In this embodiment, the plurality of grounding channels 4 are connected into an integral body. Of course, in other embodiments, the plurality of grounding channels 4 may be spaced apart from each other and not conduct integrally, which is not limited herein. It should be noted that in other embodiments, the first grounding finger 41, the second grounding finger 43, and the grounding extension 42 in the same grounding channel 4 may be distributed in the same layer of the transmission board, or may be distributed in three different layers respectively, which is not limited herein.

[0057] Please refer to Figures 8 to 11 , this is a connector 100' provided by the third embodiment of the present invention. In order to more conveniently understand the technical solution of the third embodiment of the present invention, the X'-axis, Y'-axis, and Z'-axis in the three-dimensional coordinate axes are added to the specification drawings, and the three coordinate axes are perpendicular to each other in pairs. In the third embodiment, the connector 100' includes an insulating carrier 1' and multiple pairs of differential terminals 2' provided on the insulating carrier 1'. Each pair of the differential terminals 2' includes a first terminal S1' and a second terminal S2' that are adjacent to each other and used to carry a pair of differential signals. The inner side 24' of the first terminal S1' is coupled to the inner side 24' of the second terminal S2'. The outer sides 25' of the first terminal S1' and the second terminal S2' are two outer sides of a pair of differential terminals 2' that face in opposite directions. For each of the first terminal S1' and the second terminal S2', there is a contact portion 21' for contacting a first electrical component (not shown, the same below), a conducting portion 23' for connecting to a second electrical component (not shown, the same below), and a middle portion 22' connecting the contact portion 21' and the conducting portion 23'. The middle portions 22' of the first terminal S1' and the second terminal S2' are located in the same plane P1', and the plane P1' is parallel to the appendix Figure 8The plane defined by the Z' axis and the X' axis described in [reference]. The connector 100' includes a shielding sheet 3' located on one side of the plane P1'. The shielding sheet 3' is provided with a main body portion 31' and a plurality of grounding structures 32' extending from the main body portion 31'. The insulating carrier 1' is provided with a plurality of notches 11, and each notch 11 is used to receive and fix the corresponding grounding structure 32'. In the third embodiment, the main body portion 31' is a planar sheet, and the main body portion 31' can shield external interference signals for the differential terminals 2' of the connector 100'. The grounding structure 32' can be formed by stamping, tearing and bending from the integral material of the shielding sheet 3' as shown in this embodiment; in other embodiments, the grounding structure 32' can also be made of a separate material from the main body portion 31', and is fixed to the main body portion 31' by fixing methods such as welding and snap connection. The grounding structure 32' can not only help improve the impedance consistency of the first terminal S1' and the second terminal S2', but also help fix the shielding sheet 3' and the insulating carrier 1'.

[0058] Please refer to Figure 10 and Figure 11, in the third embodiment, for a pair of differential terminals 2', the middle portion 22' of the first terminal S1' includes a timing compensation section 221 and two connection sections 222 connected to the timing compensation section 221. The timing compensation section 221 is bent away from the second terminal S2' relative to the connection sections 222. Define the distance between the inner side 24' of the timing compensation section 221 and the inner side 24' of the second terminal S2' as the first distance D1'. Define the distance between the inner side 24' of the connection section 222 and the inner side 24' of the second terminal S2' as the second distance D2'. The first distance D1' is greater than the second distance D2'. Each of the plurality of grounding structures 32' extends towards the spaced area between the inner side 24' of the timing compensation section 221 of the corresponding pair of differential terminals 2' and the inner side 24' of the second terminal S2'. When viewed along a vertical direction perpendicular to the plane P1' (the vertical direction is the Y'-axis direction in the drawings of this embodiment), the grounding structure 32' is located between the inner side 24' of the timing compensation section 221 and the inner side 24' of the second terminal S2', and the grounding structure 32' is not located between the inner side 24' of the connection section 222 and the inner side 24' of the second terminal S2'. In this way, the transmission path length of the first terminal S1' can be extended through the timing compensation section 221, the difference in the transmission path lengths between the first terminal S1' and the second terminal S2' can be reduced, and further the signal transmission time difference between the first terminal S1' and the second terminal S2' can be reduced, which is beneficial for the system to process and analyze paired differential signals and reduce the risk of signal loss or distortion. At the same time, through the grounding structure 32' provided between the timing compensation section 221 and the second terminal S2', the equivalent dielectric constant of the materials around the timing compensation section 221 and the second terminal S2' is adjusted. Thus, the capacitive effect between the timing compensation section 221 and the second terminal S2' is adjusted, which is beneficial for impedance matching at different positions of the first channel and the second channel, improves the impedance consistency of the first terminal S1' and the second terminal S2' at different positions, and reduces signal reflection and loss. The principle of achieving the relevant technical effects in the third embodiment is similar to that of the above first embodiment, and only a brief description is given here without further elaboration. In this embodiment, the plurality of connectors 100' are arranged in the Y'-axis direction to form an integral connection system (such as forming a backplane connector), and then contact the corresponding first electrical element and second electrical element. It should be noted that in other embodiments, the connector 100' may only have the timing compensation section 221 provided on the first terminal S1' of a pair of differential terminals 2', and in this case, the connector 100' may only have one grounding structure 32'.

[0059] Please refer to Figure 9 ,Figure 10 and Figure 11 , a part corresponding to and coupled side by side with the timing compensation section 221 of the first terminal S1' is provided in the second terminal S2'. In the present application, this part is referred to as the coupling section 223. The coupling section 223 and the timing compensation section 221 are coupled face to face in the side-by-side direction. For ease of understanding, please refer to FIG. 10. The part of the first terminal S1' located within the dashed rectangle is the timing compensation section 221, and the part of the second terminal S2' located within the dashed rectangle is the coupling section 223. In the third embodiment, the grounding structure 32' extends into the interval region between the inner side 24' of the timing compensation section 221 and the inner side 24' of the coupling section 223. At this time, when viewed in the side-by-side direction, the projection of the grounding structure 32' overlaps with the projection of the inner side 24' of the timing compensation section 221 and also overlaps with the projection of the inner side 24' of the second terminal S2'. At the same time, when viewed in an observation direction perpendicular to the vertical direction and the side-by-side direction, the grounding structure 32' is located between the inner side 24' of the timing compensation section 221 and the inner side 24' of the second terminal S2'. Compared with the case where the grounding structure 32' does not extend into the interval region, this embodiment can make the grounding structure 32' closer to the timing compensation section 221 and the coupling section 223, and more effectively adjust the impedance of the timing compensation section 221 and the impedance of the coupling section 223. In this embodiment, the side-by-side direction of the coupling section 223 and the timing compensation section 221 in each pair of differential terminals 2' is along the Z'-axis direction, and "an observation direction perpendicular to the vertical direction and the side-by-side direction" refers to the X'-axis direction. In other embodiments, the positions of the timing compensation sections 221 of different pairs of differential terminals 2' may be different, and the side-by-side direction and the observation direction may also be different.

[0060] Please refer to Figure 8 and Figure 9, the connecting member 100' further includes a plurality of ground terminals 4'. There is one such ground terminal 4' between adjacent pairs of differential terminals 2'. Each ground terminal 4' has a first end 41' for contacting the first electrical component, a second end 43' for connecting to the second electrical component, and a ground extension 42' connecting the first end 41' and the second end 43'. The ground extension 42', the middle part 22' of the first terminal S1', and the middle part 22' of the second terminal S2' are all located in the plane P1'. In this embodiment, for each of the first terminal S1' and the second terminal S2', the extending direction of the contact part 21' is perpendicular to the extending direction of the conducting connection part 23', and the extending direction of the first end 41' of the ground terminal 4' is perpendicular to the extending direction of the second end 43'. Thus, the connecting member 100' forms an orthogonal connection structure. In this application scenario, the transmission path of the first terminal S1' is significantly shorter than that of the second terminal S2'. The technical solution provided by this application can effectively improve the transmission time delay of a pair of differential signals and the impedance consistency of a pair of differential terminals 2' in this application scenario.

[0061] It should be noted that for a pair of differential terminals 2', the transmission path lengths of the first terminal S1' and the second terminal S2' can be set to be equal; or the transmission path lengths of the first terminal S1' and the second terminal S2' can be unequal, but compared with the case where the first terminal S1' does not have the timing compensation section 221, the timing compensation section 221 can relatively extend the transmission path of the first terminal S1' and can relatively shorten the difference in the transmission path lengths of a pair of differential terminals 2'. Additionally, in other embodiments, the grounding structure 32' may not form the shielding sheet 3' together with the main body part 31'. For example, an independent strip-shaped grounding rod or an independent smaller grounding sheet can be inserted between the first terminal S1' and the second terminal S2' and located between the inner side 24' of the timing compensation section 221 and the inner side 24' of the second terminal S2', and the grounding strip or the grounding sheet is electrically isolated from the first terminal S1' and the second terminal S2' by a local material of the insulating carrier 1'. At this time, this grounding strip or grounding sheet can be used as the grounding structure 32' in the technical solution of the present invention. Additionally, in other embodiments, the grounding structure 32' may only extend towards and approach the spaced area without entering the spaced area.

[0062] In the connector 100' of the present invention, when the connector 100' has multiple pairs of differential conductors, the present application does not limit that all the first conductors in the multiple pairs of differential conductors need to be provided with the timing compensation section 221. As long as one of the pairs of differential conductors has the first conductor provided with the timing compensation section 221, it is sufficient. For example, if the difference in the transmission path lengths of a certain pair of differential conductors among multiple pairs is not very large, even if there is a signal transmission time delay, its timing can still meet the system requirements and will not affect the system's processing of the signal. At this time, the technician can selectively set not to provide the timing compensation section 221 on the first conductor of this pair of differential conductors; if the difference in the transmission path lengths of another pair of differential conductors among multiple pairs is relatively large and the existing signal transmission time delay will affect the system's processing of the signal, at this time, the technician can choose to provide the timing compensation section 221 on the first conductor of this pair of differential conductors. In this embodiment, the distance between the grounding structure 32' and the inner side 24' of the timing compensation section 221 is not equal to the distance between the grounding structure 32' and the inner side 24' of the coupling section 223. In other embodiments, the distance between the grounding structure 32' and the inner side 24' of the timing compensation section 221 is set to be equal to the distance between the grounding structure 32' and the inner side 24' of the coupling section 223.

[0063] For the sake of easy understanding, the beneficial effects of the technical solution of the present invention will be described below in conjunction with Figures 12 to 14 the following to illustrate the beneficial effects of the technical solution of the present invention:

[0064] Figure 12 is the impedance change diagram obtained by selecting one pair of differential channels 2 from the transmission board 100 shown in the present invention and performing a simulation test on its first channel S1. The grounding structure 3 between the timing compensation section 24 and the coupling section 26 of this pair of differential channels 2 includes the grounding conductive layer 31 and the grounding hole 32; Figure 1 is the impedance change diagram obtained by removing the grounding hole 32 of the grounding structure 3 of the transmission board 100 shown in Figure 13 and only retaining the grounding conductive layer 31, and performing a simulation test on the first channel S1 of the selected pair of differential channels 2; Figure 1 is the impedance change diagram obtained by removing the entire grounding structure 3 of the transmission board 100 shown in Figure 14 (that is, removing both the grounding conductive layer 31 and the grounding hole 32), and performing a simulation test on the first channel S1 of the selected differential channel 2. To ensure the accuracy of the test, Figure 1 is to perform a simulation test on the first channel S1 at the same position on the transmission board 100 and only change the grounding structure 3 of the transmission board 100. It should be noted that although Figures 12 to 14 Figures 12 to 14 ​The abscissa is time. However, since the signal transmission time to different positions of the first channel S1 is different, so Figures 12 to 14 Each graph reflects the impedance values of the first channel S1 at different positions. The ordinates of points m1, m', and m'' represent the impedance values at the same position of the timing compensation section 24 of the first channel S1 in the above three cases. It should be noted that the dotted line at 93.50 ○hm represents the upper limit of the impedance specified by the system, the dotted line at 76.50 ○hm represents the lower limit of the impedance specified by the system, and the dotted line at 85.00 ○hm represents the impedance matching center value specified by the system. That is, the closer to 85.00 ○hm, the more the impedance value of the first channel of the transmission board conforms to the system matching value; and the smaller the fluctuation amplitude of the waveform diagram, the better the impedance consistency of each position of the first channel.

[0065] Please refer to Figures 12 to 14 , in Figure 12 , when the grounding structure 3 includes the grounding conductive layer 31 and the grounding hole 32, the impedance value at m1 is 86.58 ○hm, and the impedance fluctuation amplitude of the first channel S1 is the smallest; in Figure 13 , when the grounding structure 3 includes the grounding conductive layer 31 and does not include the grounding hole 32, the impedance value at m1' is 87.22 ○hm, and the impedance fluctuation amplitude of the first channel S1 is greater than Figure 12 the impedance fluctuation amplitude of the first channel S1 in Figure 14 and less than Figure 14 the impedance fluctuation amplitude of the first channel S1 in Figures 14 to 13 and then to Figure 12 , the impedance values at m1'', m1', and m1 gradually decrease, the impedance values gradually tend to the impedance center value of 85.00 ○hm specified by the system, and the impedance fluctuation amplitude gradually decreases. It can be concluded that compared with the case where the grounding structure 3 is not provided between the timing compensation section 24 and the coupling section 26, the technical solution of the present invention can reduce the impedance at the timing compensation section 24 and improve the impedance consistency of the first channel S1 by providing the grounding structure 3, thereby reducing signal reflection and signal loss; at the same time, compared with the grounding structure 3 only including the grounding conductive layer 31, when the grounding structure 3 includes the grounding conductive layer 31 and the grounding hole 32, the effect of reducing the impedance and improving the impedance consistency of the first channel S1 is more obvious and the effect is better.

[0066] In summary, the transmission board and the connector provided by the present invention have the following beneficial effects:

[0067] 1. By means of the timing compensation sections 24 and 221, the signal transmission time difference between the first conductor (i.e., the first channel S1 or the first terminal S1') and the second conductor (i.e., the second channel S2 or the second terminal S2') can be reduced, which is beneficial for the system to process and analyze paired differential signals and reduce the risk of signal loss or distortion. By means of the grounding structures 3 and 32', the capacitive effect between the timing compensation sections 24 and 221 and the second conductors S2 and S2' is adjusted, the impedance consistency of the first conductors S1 and S1' and the second conductors S2 and S2' at different positions is improved, and signal reflection and loss are reduced.

[0068] 2. When viewed along the side-by-side direction, the inner projections of the grounding structures 3 and 32' overlap with those of the timing compensation sections 24 and 221, and the inner projections of the grounding structures 3 and 32' overlap with those of the second conductors S2 and S2'. And when viewed along the observation direction, the grounding structures 3 and 32' are located between the inner sides of the timing compensation sections 24 and 221 and the inner sides of the second conductors S2 and S2'. Thereby, the grounding structures 3 and 32' can be made closer to the first conductors S1 and S1' and the second conductors S2 and S2', more effectively adjust the capacitive effect at the timing compensation sections 24 and 221 and the coupling sections 26 and 223, more effectively adjust the impedance of the timing compensation sections 24 and 221 and the impedance of the coupling sections 26 and 223, and further more effectively improve the impedance consistency of the first conductors S1 and S1' and the second conductors S2 and S2'.

[0069] 3. D3 = D4 can also help to balance the impedance and electric field between the first conductors S1 and S1' and the second conductors S2 and S2', help the impedance matching between the first conductors S1 and S1' and the second conductors S2 and S2', and is beneficial for signal coupling between a pair of differential conductors.

[0070] 4. When viewed along the vertical direction, the lines on the outer edges of the grounding structures 3 and 32' coincide with the lines on the inner sides of the timing compensation sections 24 and 221 over the entire extended length. Thereby, over the entire extended length of the timing compensation sections 24 and 221, a part of the grounding structures 3 and 32' is located between the timing compensation sections 24 and 221 and the coupling sections 26 and 223 of the second conductors S2 and S2', and the impedance of each position of the timing compensation sections 24 and 221 and the impedance of each position of the coupling sections 26 and 223 of the second conductors S2 and S2' are more effectively adjusted.

[0071] The above detailed description is only for the description of the preferred embodiments of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of this creative specification and illustrations are included in the patent scope of this creation.

Claims

1. A transmission board, characterized in that, Comprising: An insulating carrier; A pair of differential channels, including a first channel and a second channel disposed on the insulating carrier and adjacent to each other. The inner sides of the first channel and the second channel are spaced apart and coupled. The first channel has at least one timing compensation section and at least one connection section connected to the timing compensation section. Define the distance between the inner side of the timing compensation section and the inner side of the second channel as a first distance, and define the distance between the inner side of the connection section and the inner side of the second channel as a second distance. The first distance is greater than the second distance. The timing compensation section is bent away from the second channel relative to the connection section; At least one grounding structure is disposed on the insulating carrier. When viewed in a vertical direction perpendicular to the plate surface of the transmission plate, the grounding structure located between the first channel and the second channel in a pair of the differential channels is only disposed between the inner side of the timing compensation section and the inner side of the second channel, and the grounding structure is not located between the inner side of the connection section and the inner side of the second channel.

2. The transfer board according to claim 1, characterized in that, Both the first channel and the second channel have a contact portion, a conducting portion, and an intermediate portion that bends and extends between the contact portion and the conducting portion. The extending direction of the contact portion is perpendicular to the extending direction of the conducting portion. The timing compensation section is located in the intermediate portion of the first channel. The intermediate portion of the second channel has a coupling section. The inner side of the coupling section faces the inner side of the timing compensation section. The transmission path length of the coupling section is less than the transmission path length of the timing compensation section. The transmission path lengths of the first channel and the second channel are equal.

3. The transfer board according to claim 1, wherein When viewed in the side-by-side direction of the timing compensation section and the second channel, the projection of the grounding structure overlaps with the projection of the inner side of the timing compensation section, and the projection of the grounding structure overlaps with the projection of the inner side of the second channel; When viewed in an observation direction perpendicular to the side-by-side direction and the vertical direction, the grounding structure is located between the inner side of the timing compensation section and the inner side of the second channel.

4. The transfer board according to claim 1, characterized in that, When viewed in the vertical direction, the distance between an outer edge of the grounding structure and the inner side of the timing compensation section is equal to the distance between the outer edge of the grounding structure and the inner side of the second channel.

5. The transfer board according to claim 1, characterized in that, The grounding structure has an outer edge adjacent to the inner side of the timing compensation section, and the line of the outer edge coincides with the line of the inner side of the timing compensation section over the entire extending length.

6. The transfer board according to claim 5, characterized in that, The second channel has a coupling section that extends linearly. The inner side of the coupling section faces the inner side of the timing compensation section. The first channel has at least two of the connection sections, and the timing compensation section is connected between the two connection sections; The timing compensation section includes a first turning section connected to one of the connection sections and extending away from the coupling section, a first vertical section connected to the first turning section and perpendicular to the coupling section, a second vertical section spaced apart from and parallel to the first vertical section, a second turning section connecting the second vertical section and the other connection section, and a connecting section connecting the first vertical section and the second vertical section. The connecting section has a parallel portion parallel to the coupling section; The distances between the outer edge of the grounding structure and the inner side of the first turning section, the inner side of the first vertical section, the inner side of the parallel portion, the inner side of the second vertical section, and the inner side of the second turning section are all equal.

7. The transfer board according to claim 1, characterized in that, The first distance is not less than 1.5 times the second distance and not more than 3 times the second distance.

8. The transfer board according to claim 1, wherein, The grounding structure includes a grounding conductive layer and / or a grounding hole. Wherein, the grounding conductive layer is parallel to the plate surface of the transmission plate, the grounding hole is recessed along the vertical direction, and the inner wall of the grounding hole is provided with a conductive material connecting to the ground potential.

9. A connecting piece, characterized in that, Comprising: An insulating carrier; A first conductor and a second conductor for carrying a pair of differential signals. The first conductor and the second conductor are arranged adjacent to each other and fixed to the insulating carrier. The inner sides of the first conductor and the second conductor are coupled. Both the first conductor and the second conductor have a contact portion for contacting a first electrical component, a conducting portion for connecting to a second electrical component, and an intermediate portion connecting the contact portion and the conducting portion. The intermediate portions of the first conductor and the second conductor are in the same plane. The intermediate portion of the first conductor includes at least one timing compensation section and at least one connection section connected to the timing compensation section. The timing compensation section is bent away from the second conductor relative to the connection section. Define the distance between the inner side of the timing compensation section and the inner side of the second conductor as the first distance, and define the distance between the inner side of the connection section and the inner side of the second conductor as the second distance. The first distance is greater than the second distance; A grounding structure is arranged on the insulating carrier. When viewed along a vertical direction perpendicular to the plane, the grounding structure located between the first conductor and the second conductor carrying a pair of differential signals is only arranged between the inner side of the timing compensation section and the inner side of the second conductor, and the grounding structure is not located between the inner side of the connection section and the inner side of the second conductor.

10. The connecting member according to claim 9, characterized in that, The connecting member is a circuit board. The grounding structure includes a grounding conductive layer and / or a grounding hole. Wherein, the grounding conductive layer is parallel to the plane, the grounding hole is recessed along the direction perpendicular to the plane, and the inner wall of the grounding hole is provided with a conductive material connecting to the ground potential.

11. The connecting member according to claim 9, wherein The transmission path lengths of the first conductor and the second conductor are equal, and a part of the second conductor is coupled to the timing compensation section in a facing manner along a side-by-side direction; when viewed in the side-by-side direction, the grounding structure overlaps the projection of the inner side of the timing compensation section and the projection of the inner side of the second conductor; When viewed in an observation direction perpendicular to the vertical direction and the side-by-side direction, the grounding structure is located between the inner sides of the timing compensation section and the second conductor.

12. The connecting member according to claim 9, wherein, When viewed in a direction perpendicular to the plane, the distance between an outer edge of the grounding structure and the inner side of the timing compensation section is equal to the distance between the outer edge of the grounding structure and the inner side of the second conductor.

13. The connecting member according to claim 9, characterized in that, The grounding structure has an outer edge adjacent to the inner side of the timing compensation section, and the line of the outer edge coincides with the line of the inner side of the timing compensation section over the entire extended length.

14. The connecting member according to claim 9, wherein Both the first conductor and the second conductor are terminal structures, and the connecting member includes a shielding sheet located on one side of the plane. The shielding sheet is electrically isolated from the first conductor and the second conductor, and the shielding sheet is provided with a main body portion and the grounding structure extending from the main body portion toward the spaced area between the inner sides of the timing compensation section and the second conductor.

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