Circuit board, connector, and connector assembly

Abstract

The present invention relates to the field of printed circuits, and provides a circuit board, a connector, and a connector assembly. The circuit board comprises a substrate; signal vias and ground vias are provided on the substrate; the signal vias are provided in pairs; a first longitudinal central axis having an equal distance to two signal via pairs is provided between the two longitudinally adjacent signal via pairs; and the center of at least one longitudinally spaced ground via in a group of longitudinally spaced ground vias is provided longitudinally offset from the first longitudinal central axis. The connector comprises a connector body, and signal terminals and ground terminals which are provided on the connector body. The connector assembly comprises the connector and the circuit board. In the present invention, a passage space for two parallel traces to pass through is provided between a longitudinally spaced ground via and a corresponding longitudinally adjacent signal via, the longitudinally spaced ground via being provided offset from the first longitudinal central axis, so that the traces can immediately form a parallel structure after being led out from the signal via, thereby realizing differential pair transmission earlier, and ensuring the transmission quality of differential signals.

Description

Circuit board, connector and connector assembly TECHNICAL FIELD

[0001] The present application belongs to the field of printed circuit, in particular to a circuit board, a connector and a connector assembly. BACKGROUND

[0002] The connector connecting two circuit boards is generally composed of multiple wafer assemblies, and in order to prevent crosstalk between high-speed signal transmission, shielding sheets need to be arranged between wafer assemblies. Signal terminals carrying differential signals are arranged in pairs on the wafer assembly, and ground terminals are arranged on the shielding sheet. The circuit board corresponding to the connector is arranged with signal holes and ground holes with an inner metal layer, the signal holes are arranged in pairs to form a signal hole pair, and the two signal holes in the same signal hole pair are arranged in a transverse direction, the ground holes are arranged around the signal holes in a circumferential direction, two ground holes are arranged in a longitudinal direction between two transversely adjacent signal hole pairs, and two ground holes are arranged in a transverse direction between two longitudinally adjacent signal hole pairs.

[0003] The existing circuit board structure is shown in FIG. 1, which includes a base body 1 and signal holes 21 (i.e. small holes in FIG. 1) and ground holes 22 (i.e. large holes in FIG. 1) arranged on the base body 1, the signal holes 21 are arranged in pairs to form a signal hole pair, and the two signal holes 21 in the same signal hole pair are arranged in a transverse direction, the ground holes 22 are arranged around the signal holes 21 in a circumferential direction, two ground holes 22 are arranged in a longitudinal direction between two transversely adjacent signal hole pairs, and two ground holes 22 are arranged in a transverse direction between two longitudinally adjacent signal hole pairs.

[0004] In order to adapt to smaller connectors, the signal holes and the ground holes are arranged more compactly in the prior art, and the longitudinal distance between the ground holes between the two longitudinally adjacent signal hole pairs and the corresponding signal holes is small, so it is difficult to make the mutually parallel traces led out from the signal holes and the longitudinally adjacent ground holes pass through without changing the longitudinal distance between the two longitudinally adjacent signal hole pairs, and thus the traces led out from each signal hole in the same signal hole pair need to be designed with a relatively long separate trace for adjustment, the separate trace part is an adjustment section 13 in FIG. 1, and then the traces can be converged to realize equal-distance differential trace transmission, thereby affecting the transmission quality of the differential signals. In addition, the small distance between the ground holes and the signal holes also makes it inconvenient to adjust the impedance, crosstalk and SI performance of the differential signal transmission by changing the shape of the traces (for example, by arranging a bending section for the traces). SUMMARY

[0005] One of the objects of the present application is to provide a circuit board to solve the technical problems that the circuit board in the prior art is difficult to make the parallel traces led out from the same pair of signal holes pass through between the signal hole and the ground hole longitudinally adjacent to the signal hole without changing the longitudinal distance between the two signal hole pairs longitudinally adjacent to each other, thereby causing the two traces to fail to achieve tight coupling as early as possible, and the space between the signal hole and the ground hole is too small to facilitate the adjustment of the impedance, crosstalk and SI performance of the differential signal transmission.

[0006] One of the objects of the present application is to provide a connector to solve the above technical problems.

[0007] One of the objects of the present application is to provide a connector assembly to solve the above technical problems.

[0008] To achieve the above object, the technical scheme of the circuit board provided by the present application is:

[0009] A circuit board, comprising a base body, a signal hole and a ground hole are arranged on the base body, the signal holes are arranged in pairs to form a signal hole pair, two signal holes in the same pair are arranged at intervals along the transverse direction, the ground hole is arranged around the signal hole pair, the ground holes between two signal hole pairs longitudinally adjacent to each other form a set of longitudinal interval ground holes, there is a first longitudinal interval center axis between two signal hole pairs longitudinally adjacent to each other at a distance equal to that of the two signal hole pairs, the center of at least one longitudinal interval ground hole in the set of longitudinal interval ground holes is arranged to deviate from the first longitudinal interval center axis to form a deviated hole, and the deviated hole and the corresponding longitudinally adjacent signal hole have a passing space for two parallel traces to pass through.

[0010] As a further improvement, the average longitudinal distance from each longitudinal interval ground hole in the same set of longitudinal interval ground holes to the same longitudinally adjacent signal hole pair is equal to half of the longitudinal distance between the two longitudinally adjacent signal hole pairs.

[0011] As a further improvement, the number of longitudinal interval ground holes in the set of longitudinal interval ground holes is two, and the two longitudinal interval ground holes are arranged on both sides of the first longitudinal interval center axis, and the longitudinal distance from the two longitudinal interval ground holes to the first longitudinal interval center axis is equal.

[0012] As a further improvement, the number of longitudinal interval ground holes in the set of longitudinal interval ground holes is two, and the two longitudinal interval ground holes are arranged on both sides of the first longitudinal interval center axis.

[0013] As a further improvement, each longitudinal interval ground hole in the same set is arranged at intervals along a straight line, and the straight line is the longitudinal interval ground hole arrangement axis.

[0014] As a further improvement, the angle between the longitudinal interval ground hole arrangement axis and the transverse direction is less than 45°.

[0015] As a further improvement, the angle between the longitudinal indirect ground hole arrangement axis and the transverse direction ranges from 10° to 30°.

[0016] The beneficial effect is that the circuit board provided by the application is an improvement over the prior art. In the application, at least one longitudinal indirect ground hole in the longitudinal indirect ground hole group is arranged to deviate from the first longitudinal inter-center axis in the longitudinal direction to form a deviated hole, and the deviated hole and the corresponding longitudinally adjacent signal hole have a passing space for two parallel traces to pass through. Compared with the prior art, the circuit board in the application does not need to design a longer separate trace for the signal hole, so that the traces can be immediately arranged in parallel after being led out from the signal hole to realize differential trace transmission as soon as possible, and a longer distance of tight coupling is obtained, thereby effectively ensuring the transmission quality of the differential signal. Moreover, the passing space also provides a larger space for the layout of the traces, which is conducive to adjusting the impedance, crosstalk and SI performance of the differential signal transmission by changing the shape of the traces.

[0017] To achieve the above-mentioned purpose, the technical scheme of the connector provided by the application is:

[0018] The connector comprises a connector main body, signal terminals for cooperating with signal holes, and ground terminals for cooperating with ground holes, the signal terminals are arranged in pairs to form signal terminal pairs, two signal terminals of the same pair are arranged at intervals in the transverse direction, the ground terminals are arranged around the signal terminals in a ring shape, the ground terminals between longitudinally adjacent two signal terminal pairs are a group of longitudinal indirect ground terminals, there is a second longitudinal inter-center axis equidistant to the two signal terminal pairs between longitudinally adjacent two signal terminal pairs, and the center of at least one longitudinal indirect ground terminal in the group of longitudinal indirect ground terminals is arranged to deviate from the longitudinal inter-center axis in the longitudinal direction to form a deviated terminal, the deviated terminal is used for crimping cooperation with a corresponding deviated hole in the longitudinal indirect ground hole on the circuit board.

[0019] As a further improvement, the average longitudinal distance from each longitudinal indirect ground terminal in the same group of longitudinal indirect ground terminals to the same longitudinally adjacent signal terminal pair is equal to half of the longitudinal distance between the longitudinally adjacent two signal terminal pairs.

[0020] As a further improvement, the number of longitudinal indirect ground terminals in the group of longitudinal indirect ground terminals is two, and the two longitudinal indirect ground terminals are arranged on the two sides of the second longitudinal inter-center axis respectively, and the longitudinal distances from the two longitudinal indirect ground terminals to the second longitudinal inter-center axis are equal.

[0021] As a further improvement, the number of longitudinal indirect ground terminals in the group of longitudinal indirect ground terminals is two, and the two longitudinal indirect ground terminals are arranged on the two sides of the second longitudinal inter-center axis respectively.

[0022] As a further improvement, the longitudinal indirect ground terminals in the same group are arranged along a straight line, which is the longitudinal indirect ground terminal arrangement axis.

[0023] As a further improvement, the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction is less than 45°.

[0024] As a further improvement, the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction ranges from 10° to 30°.

[0025] The beneficial effect is that the connector provided by the present application is an improvement over the prior art. In the present application, at least one longitudinal indirect ground terminal in the longitudinal indirect ground terminal group is arranged to deviate from the second longitudinal indirect center axis in the longitudinal direction to form a deviated terminal. The space between the deviated terminal and the corresponding longitudinally adjacent signal terminal is larger. Correspondingly, on the circuit board matched with the connector, the space between the deviated hole matched with the deviated terminal and the corresponding longitudinally adjacent signal hole is larger and serves as a passing space for two parallel traces. Compared with the prior art, the circuit board in the present application does not need to design a longer separate trace for the trace leading out of the signal hole. Therefore, the trace can immediately form a parallel structure after leading out of the signal hole to realize differential trace transmission earlier, achieve tight coupling for a longer distance, and effectively ensure the transmission quality of the differential signal. Moreover, the passing space also provides a larger space for the layout of the trace, which is conducive to adjusting the impedance, crosstalk and SI performance of the differential signal transmission by changing the shape of the trace.

[0026] To achieve the above-mentioned purpose, the technical scheme of the connector assembly provided by the present application is:

[0027] A connector assembly includes a connector and a circuit board, the circuit board includes a substrate, the substrate is provided with signal holes and ground holes, the signal holes are arranged in pairs to form a signal hole pair, two signal holes of the same pair are arranged in transverse direction, the ground holes are arranged around the signal hole pair, the ground holes between two longitudinally adjacent signal hole pairs form a set of longitudinally spaced ground holes, the two longitudinally adjacent signal hole pairs have a first longitudinally spaced center axis equidistant to the two signal hole pairs, at least one longitudinally spaced ground hole of the set of longitudinally spaced ground holes is arranged longitudinally offset to the first longitudinally spaced center axis to form an offset hole, the offset hole and the corresponding longitudinally adjacent signal hole have a passing space for two parallel traces to pass through; the connector includes a connector body, the connector body is provided with signal terminals for cooperating with the signal holes and ground terminals for cooperating with the ground holes, the signal terminals are arranged in pairs to form a signal terminal pair, two signal terminals of the same pair are arranged in transverse direction, the ground terminals are arranged around the signal terminals, the ground terminals between two longitudinally adjacent signal terminal pairs form a set of longitudinally spaced ground terminals, the two longitudinally adjacent signal terminal pairs have a second longitudinally spaced center axis equidistant to the two signal terminal pairs, at least one longitudinally spaced ground terminal of the set of longitudinally spaced ground terminals is arranged longitudinally offset to the longitudinally spaced center axis to form an offset terminal, the offset terminal is used for crimping cooperation with the corresponding offset hole of the longitudinally spaced ground hole on the circuit board.

[0028] As a further improvement, the average longitudinal distance of each longitudinally spaced ground hole in the same set of longitudinally spaced ground holes to the same longitudinally adjacent signal hole pair is equal to half of the longitudinal spacing of the two longitudinally adjacent signal hole pairs; the average longitudinal distance of each longitudinally spaced ground terminal in the same set of longitudinally spaced ground terminals to the same longitudinally adjacent signal terminal pair is equal to half of the longitudinal spacing of the two longitudinally adjacent signal terminal pairs.

[0029] As a further improvement, the number of longitudinally spaced ground holes in a set of longitudinally spaced ground holes is two, and the two longitudinally spaced ground holes are arranged on both sides of the first longitudinally spaced center axis respectively, the longitudinal distance of the two longitudinally spaced ground holes to the first longitudinally spaced center axis is equal; the number of longitudinally spaced ground terminals in a set of longitudinally spaced ground terminals is two, and the two longitudinally spaced ground terminals are arranged on both sides of the second longitudinally spaced center axis respectively, the longitudinal distance of the two longitudinally spaced ground terminals to the second longitudinally spaced center axis is equal.

[0030] As a further improvement, the number of longitudinally spaced ground holes in a set of longitudinally spaced ground holes is two, and the two longitudinally spaced ground holes are arranged on both sides of the first longitudinally spaced center axis respectively; the number of longitudinally spaced ground terminals in a set of longitudinally spaced ground terminals is two, and the two longitudinally spaced ground terminals are arranged on both sides of the second longitudinally spaced center axis respectively.

[0031] As a further improvement, each longitudinal indirect ground hole in the same group is arranged along a straight line, which is a longitudinal indirect ground hole arrangement axis; each longitudinal indirect ground terminal in the same group is arranged along a straight line, which is a longitudinal indirect ground terminal arrangement axis.

[0032] As a further improvement, the angle between the longitudinal indirect ground hole arrangement axis and the transverse direction is less than 45°; the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction is less than 45°.

[0033] As a further improvement, the angle between the longitudinal indirect ground hole arrangement axis and the transverse direction ranges from 10° to 30°; the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction ranges from 10° to 30°.

[0034] The beneficial effects are that the connector assembly provided by the application is an improvement over the prior art. In the application, the circuit board of the connector assembly arranges at least one longitudinal indirect ground hole in the longitudinal indirect ground hole group to deviate from the first longitudinal indirect center axis in the longitudinal direction to form a deviated hole, and the deviated hole and the corresponding longitudinally adjacent signal hole have a passing space for two parallel traces to pass through. Compared with the prior art, the circuit board in the application does not need to design a longer separate trace for the trace leading out of the signal hole, so that the trace can immediately form a parallel structure after leading out of the signal hole to realize differential trace transmission earlier, obtain a longer distance of tight coupling, and effectively ensure the transmission quality of the differential signal. Moreover, the passing space also provides a larger space for the layout of the trace, which is conducive to adjusting the impedance, crosstalk and SI performance of the differential signal transmission by changing the form of the trace. BRIEF DESCRIPTION OF DRAWINGS

[0035] Fig. 1 is a structural schematic diagram of a circuit board in the prior art;

[0036] Fig. 2 is a structural schematic diagram of a circuit board in an embodiment 1 of a connector assembly in the application;

[0037] Fig. 3 is a structural schematic diagram of a connector in the embodiment 1 of the connector assembly in the application;

[0038] Fig. 4 is a structural schematic diagram of a wafer assembly in the embodiment 1 of the connector assembly in the application;

[0039] Fig. 5 is a schematic diagram of the arrangement of signal terminals and ground terminals on a wafer assembly in the embodiment 1 of the connector assembly in the application.

[0040] Explanation of reference signs:

[0041] 1, substrate; 2, via unit; 21, signal hole; 22, ground hole; 221, longitudinal indirect ground hole; 222, transverse indirect ground hole; 3, passing space; 4, trace; 5, avoiding hole; 6, longitudinal axis; 7, transverse axis; 8, longitudinal indirect ground hole arrangement axis; 9, transverse indirect ground hole arrangement axis; 10, first longitudinal indirect center axis; 11, housing; 12, wafer assembly; 121, main body; 122, shielding plate; 123, signal terminal; 124, longitudinal indirect ground terminal; 125, transverse indirect ground terminal; 13, adjusting section. DETAILED DESCRIPTION

[0042] The application will be further described in conjunction with the embodiments.

[0043] Specific embodiment 1 of the connector assembly provided by the application:

[0044] A connector assembly, comprising a circuit board and a connector cooperating with the circuit board.

[0045] Referring to FIG. 2, the circuit board comprises a substrate 1, the substrate 1 is provided with signal holes 21 and ground holes, the signal holes 21 are arranged in pairs to form a signal hole pair, and the ground holes are arranged around the signal hole pair to shield the signal hole pair. The signal holes 21 and the ground holes are both internally plated with a metal layer, the metal layer of the signal holes 21 is connected with a trace 4 for leading out a differential signal, and the metal layer of the ground holes is connected with a ground layer on the substrate 1, the ground layer is provided with an avoiding hole 5 at the signal hole pair. A ground terminal is press-fit with a corresponding ground hole, and a signal terminal 123 is press-fit with a corresponding signal hole 21.

[0046] In this embodiment, an axis extending in the transverse direction is defined as the transverse axis 7, and an axis extending in the longitudinal direction is defined as the longitudinal axis 6, the signal hole pairs are arranged in columns in the longitudinal direction and the arrangement direction is parallel to the longitudinal axis 6, and the signal hole pairs are arranged in rows in the transverse direction and the arrangement direction is parallel to the transverse axis 7. Two signal holes 21 in the same pair are arranged in the transverse direction.

[0047] The ground holes between two signal hole pairs adjacent in the transverse direction are a group of transverse indirect ground holes, and each transverse indirect ground hole in the same group is arranged in the longitudinal direction. In this embodiment, the number of transverse indirect ground holes in a group is two, and the two transverse indirect ground holes are arranged along the transverse indirect ground hole arrangement axis 9, which is a line passing through the centers of the two transverse indirect ground holes. The distance from the transverse indirect ground hole arrangement axis 9 to the signal hole pairs on the two sides in the transverse direction is equal.

[0048] The ground hole between two signal hole pairs which are longitudinally adjacent is a group of longitudinal indirect ground holes, the number of the longitudinal indirect ground holes in each group is two. The two longitudinal indirect ground holes in the same group are arranged along a longitudinal indirect ground hole arrangement axis 8, the longitudinal indirect ground hole arrangement axis 8 is a line passing through the centers of the two longitudinal indirect ground holes. The longitudinal indirect ground hole arrangement axis 8 is not parallel to the transverse axial and longitudinal axis 6, specifically, the angle between the longitudinal indirect ground hole arrangement axis 8 and the longitudinal axis 6 is greater than the angle between the longitudinal indirect ground hole arrangement axis 8 and the transverse axis 7, and the angle between the longitudinal indirect ground hole arrangement axis 8 and the transverse axis 7 is in the range of 10°-30°, and the angle between the longitudinal indirect ground hole arrangement axis 8 and the transverse axis 7 can be selected according to actual needs.

[0049] In addition, the average of the longitudinal distance from each longitudinal indirect ground hole in the same group to the longitudinally adjacent signal hole pair is equal to half of the longitudinal interval between the two longitudinally adjacent signal hole pairs. In the embodiment, the signal hole pair, the group of longitudinal indirect ground holes located on the longitudinal side of the signal hole pair, and the group of transverse indirect ground holes located on the transverse side of the signal hole pair are taken as one via hole unit 2, and in the same via hole unit 2, the sum of the longitudinal distances from the centers of the two longitudinal indirect ground holes to the center of the signal hole 21 is equal to the longitudinal interval between the two longitudinally adjacent signal hole pairs. That is, the line equal in distance to the two signal hole pairs between the two longitudinally adjacent signal hole pairs is taken as a first longitudinal indirect center axis 10, the number of the longitudinal indirect ground holes in the group is two, and the two longitudinal indirect ground holes are arranged on the two sides of the first longitudinal indirect center axis 10 respectively, and the longitudinal distances of the two longitudinal indirect ground holes to the first longitudinal indirect center axis 10 are equal.

[0050] In the same via hole unit 2, the longitudinal indirect ground hole whose center is located on the side of the corresponding first longitudinal indirect center axis 10 away from the signal hole 21 is an offset hole, and in the case of not changing the longitudinal interval of the signal hole pair, the longitudinal interval of the offset hole to the signal hole pair is larger, and the through space 3 through which the two mutually parallel traces 4 pass, so that the traces 4 drawn from the signal hole 21 in the via hole unit 2 do not need to be designed as long individual traces, and the traces 4 can immediately form a mutually parallel structure after being drawn from the signal hole 21 to realize differential trace transmission as early as possible, and a long-distance tight coupling is obtained, which effectively ensures the transmission quality of the differential signal.

[0051] Moreover, the distance between the transverse indirect ground hole adjacent to the through space 3 and the offset hole is also larger, further expanding the range of the through space 3, providing a larger space for the layout of the traces 4, and being conducive to the adjustment of the impedance, crosstalk and SI performance of the differential signal transmission.

[0052] In the same via unit 2, the centers of the other two longitudinal intermediate vias are arranged on the corresponding first longitudinal intermediate center axis 10 and between the signal via pairs, and the longitudinal distances of the two longitudinal intermediate vias to the first longitudinal intermediate center axis 10 are equal, so that the average longitudinal distance of the two longitudinal intermediate vias to one longitudinally adjacent signal via pair is equal to the average longitudinal distance of the two longitudinal intermediate vias to another longitudinally adjacent signal via pair, so as to ensure better anti-crosstalk performance.

[0053] Referring to FIG. 3, the connector includes a connector body and signal terminals 123 and ground terminals arranged on the connector body. Specifically, the connector body includes a housing 11 and a plurality of wafer assemblies 12 mounted in the housing 11, as shown in FIGS. 4 and 5, the wafer assembly 12 includes a main body 121 and shielding plates 122 located on both sides of the main body 121, the main body 121 includes an insulator and signal contacts arranged in the insulator, one end of the signal contacts is provided with a signal terminal 123 extending out of the insulator, and the corresponding end of the shielding plate 122 is provided with a ground terminal. The signal terminals 123 on the wafer assembly 12 are arranged in pairs to form signal terminal pairs, the signal terminal pairs are arranged longitudinally at intervals, and the arrangement direction of the two signal terminals 123 in the same pair is the same as the thickness direction of the wafer assembly 12, that is, the transverse direction. The ground terminals on the shielding plate 122 are longitudinal intermediate ground terminals 124, the longitudinal intermediate ground terminals 124 are arranged between longitudinally adjacent signal terminal pairs and two ground terminals form a group. Shielding members are also arranged between adjacent wafer assemblies 12, and the shielding members are also provided with ground terminals, which are transverse intermediate ground terminals 125, the transverse intermediate ground terminals 125 are arranged between transversely adjacent signal terminal pairs and two ground terminals form a group.

[0054] The signal terminals 123 on the connector are correspondingly crimped with the signal vias 21 on the circuit board, and the ground terminals on the connector are correspondingly crimped with the ground vias on the circuit board, so the arrangement structure of the signal terminals 123 and the ground terminals on the connector is the same as the arrangement structure of the signal vias 21 and the ground vias on the circuit board. Specifically, there is a second longitudinal intermediate center axis with equal distances to two signal terminal pairs between the two longitudinally adjacent signal terminal pairs, and the two longitudinal intermediate ground terminals 124 in a group of longitudinal intermediate ground terminals are arranged on both sides of the second longitudinal intermediate center axis, respectively, and the longitudinal distances of the two longitudinal intermediate ground terminals 124 to the second longitudinal intermediate center axis are equal. The connector has terminal units corresponding to the via units 2, and in the same terminal unit, the longitudinal intermediate ground terminals 124 with centers arranged longitudinally offset from the second longitudinal intermediate center axis form offset terminals, and the offset terminals are crimped with the corresponding offset vias.

[0055] Correspondingly, the longitudinal indirect ground terminals in the same group are arranged along a straight line, which is the longitudinal indirect ground terminal arrangement axis, and the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction is less than 45°, and specifically, the angle between the longitudinal indirect ground terminal arrangement axis and the transverse direction ranges from 10° to 30°.

[0056] The number of longitudinal indirect ground holes in a group can be designed as required. In other embodiments, a group can have three or four longitudinal indirect ground holes, and all the longitudinal indirect ground holes are arranged along the longitudinal indirect ground hole arrangement axis. When a group has three longitudinal indirect ground holes, the center of one longitudinal indirect ground hole is located on one side of the corresponding first longitudinal inter-center axis away from the signal hole, the center of one longitudinal indirect ground hole is located on the corresponding first longitudinal inter-center axis, and the center of one longitudinal indirect ground hole is located between the corresponding first longitudinal inter-center axis and the pair of signal holes in the via unit. When a group has four longitudinal indirect ground holes, the centers of two adjacent longitudinal indirect ground holes are located on one side of the corresponding first longitudinal inter-center axis away from the signal hole, and the centers of the other two adjacent longitudinal indirect ground holes are located between the corresponding first longitudinal inter-center axis and the pair of signal holes in the via unit.

[0057] Specific embodiment 2 of the connector assembly provided by the present application:

[0058] The difference between this embodiment and embodiment 1 is that in the same via unit, the center of one longitudinal indirect ground hole is located on one side of the corresponding first longitudinal inter-center axis away from the signal hole and the longitudinal indirect ground hole constitutes a deviated hole, and the center of the other longitudinal indirect ground hole is located on the corresponding first longitudinal inter-center axis. The space between the deviated hole and the pair of signal holes in this embodiment can be used as a through space for two parallel traces, so that the traces can be immediately formed into a parallel structure after being drawn out from the signal hole to achieve the purpose of differential transmission as early as possible.

[0059] In other embodiments, the center of the other longitudinal indirect ground hole except the deviated hole can be located between the first longitudinal inter-center axis and the pair of signal holes in the same via unit, but the distances of the two longitudinal indirect ground holes to the first longitudinal inter-center axis are not equal.

[0060] In other embodiments in which the number of longitudinal indirect ground holes in a group is greater than or equal to three, only the centers of one or two longitudinal indirect ground holes on the outside can be arranged on one side of the corresponding first longitudinal inter-center axis away from the signal hole, and the centers of the remaining longitudinal indirect ground holes are located on the corresponding first longitudinal inter-center axis.

[0061] Specific embodiment of the circuit board provided by the present application:

[0062] The circuit board is the circuit board in the connector assembly of the above-mentioned embodiment 1 or 2, which is not repeated here.

[0063] The specific embodiment of the connector provided by the application is as follows:

[0064] The connector is the connector in the connector assembly of the above-mentioned embodiment 1 or 2, which is not repeated here.

[0065] Finally, it should be noted that the above only describes the preferred embodiments of the application, and is not intended to limit the application. Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments without creative labor, or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A circuit board, comprising a substrate (1), wherein signal holes (21) and grounding holes are provided on the substrate (1), the signal holes (21) are arranged in pairs to form signal hole pairs, the two signal holes (21) of the same pair are arranged laterally at intervals, the grounding holes are arranged around the signal hole pairs, the grounding holes between two longitudinally adjacent signal hole pairs form a set of longitudinal indirect grounding holes (221), and there is a first longitudinal central axis (10) between two longitudinally adjacent signal hole pairs that is equidistant from the two signal hole pairs, characterized in that, At least one of the longitudinal indirect ground holes (221) in a set of longitudinal indirect ground holes (221) is set to form an offset hole by the center of the first longitudinal inter-central axis (10) in a longitudinal direction. There is a passage space (3) between the offset hole and the corresponding longitudinally adjacent signal hole (21) for two parallel traces (4) to pass through.

2. The circuit board according to claim 1, characterized in that, The average longitudinal distance from each longitudinal indirect ground hole (221) in the same group of longitudinal indirect ground holes (221) to the same longitudinally adjacent signal hole pair is equal to half the longitudinal spacing between the two longitudinally adjacent signal hole pairs.

3. The circuit board according to claim 2, characterized in that, The number of longitudinal indirect ground holes (221) in a set of longitudinal indirect ground holes (221) is two, and the two longitudinal indirect ground holes (221) are respectively arranged on both sides of the first longitudinal central axis (10), and the longitudinal distances from the two longitudinal indirect ground holes (221) to the first longitudinal central axis (10) are equal.

4. The circuit board according to claim 1, characterized in that, The number of longitudinal indirect boreholes (221) in a set of longitudinal indirect boreholes (221) is two, and the two longitudinal indirect boreholes (221) are respectively arranged on both sides of the first longitudinal central axis (10).

5. The circuit board according to any one of claims 1-4, characterized in that, Each longitudinal indirect borehole (221) in the same group is arranged at intervals along a straight line, which is the longitudinal indirect borehole arrangement axis (8).

6. The circuit board according to claim 5, characterized in that, The angle between the longitudinal indirect hole arrangement axis (8) and the transverse direction is less than 45°.

7. The circuit board according to claim 6, characterized in that, The angle between the longitudinal indirect hole arrangement axis (8) and the transverse direction is 10°-30°.

8. A connector, comprising a connector body, wherein the connector body is provided with signal terminals (123) for mating with signal holes (21) and grounding terminals for mating with grounding holes, the signal terminals (123) being arranged in pairs to form signal terminal pairs, the two signal terminals (123) of the same pair being arranged laterally at intervals, the grounding terminals being arranged around the signal terminals (123), the grounding terminals between two longitudinally adjacent signal terminal pairs forming a set of longitudinally indirect grounding terminals (124), and a second longitudinally inter-center axis equidistant from the two signal terminal pairs being between two longitudinally adjacent signal terminal pairs, characterized in that, At least one of the longitudinal indirect ground terminals (124) in a set of longitudinal indirect ground terminals (124) is disposed at its center along the longitudinal indirect ground axis to form an offset terminal, which is used to press-fit with the corresponding offset hole in the longitudinal indirect ground hole (221) on the circuit board.

9. The connector according to claim 8, characterized in that, The average longitudinal distance from each longitudinal indirect ground terminal (124) in the same group of longitudinal indirect ground terminals (124) to the same longitudinally adjacent signal terminal (123) pair is equal to half the longitudinal spacing between two longitudinally adjacent signal terminal (123) pairs.

10. The connector according to claim 9, characterized in that, The number of longitudinal indirect ground terminals (124) in a set of longitudinal indirect ground terminals (124) is two, and the two longitudinal indirect ground terminals (124) are respectively arranged on both sides of the second longitudinal central axis, and the longitudinal distances from the two longitudinal indirect ground terminals (124) to the second longitudinal central axis are equal.

11. The connector according to claim 8, characterized in that, The number of longitudinal indirect ground terminals (124) in a set of longitudinal indirect ground terminals (124) is two, and the two longitudinal indirect ground terminals (124) are respectively arranged on both sides of the second longitudinal central axis.

12. The connector according to any one of claims 8-11, characterized in that, Each longitudinal indirect ground terminal (124) in the same group is arranged at intervals along a straight line, which is the longitudinal indirect ground terminal arrangement axis.

13. The connector according to claim 12, characterized in that, The angle between the longitudinal indirect terminal arrangement axis and the transverse direction is less than 45°.

14. The connector according to claim 13, characterized in that, The angle between the longitudinal indirect terminal arrangement axis and the transverse direction ranges from 10° to 30°.

15. A connector assembly comprising a connector and a circuit board, characterized in that, The circuit board is the circuit board according to any one of claims 1-7, and the connector is the connector according to any one of claims 8-14.

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