Patent Application
20240136741
This application claims the priority benefit of Chinese Patent Application No. 202211283574.5 filed on Oct. 19, 2022, in the China National Intellectual Property Administration, the whole disclosure of which is incorporated herein by reference.
Embodiments of the present disclosure generally relate to the field of data communication, and more specifically, to an electrical connector capable of effectively reducing the differential impedance at the solder balls during high-speed signal transmission.
With the development of digital information technology, the amount of data transmitted is increasing day by day. For example, in the field of communication, high-speed connectors are required to achieve high-speed signal transmission of at least 112 Gbps. Since data transmission often needs to connect different electrical devices or interfaces through the electrical connector, the signal transmission speed and quality of the electrical connector will greatly affect the speed and stability of data transmission. For example, an electrical connector can be used to make an electrical connection between two printed circuit boards (PCBs).
Each of the electrical connectors used in these applications typically includes conductive terminals mounted in a housing and used for contacting or clamping mating components to provide electrical connections. One end of the conductive terminal has a soldering part or is connected with a solder ball for being soldered on a circuit board. Currently, in high-speed connectors such as 112 Gbps connectors, the differential impedance at the solder ball is very high. The main reason is in that a part of the solder ball is exposed to the air and the dielectric constant of the air is relatively low, thus the differential impedance coupled in high-speed signal transmission will be relatively high, resulting in unstable signal transmission.
According to an embodiment of the present disclosure, an electrical connector includes an insulation housing having opposite first and second sides, an array of a plurality of conductive terminals, a plurality of solder balls, and a spacer. The conductive terminals are mounted within the insulation housing, with each conductive terminal having a contact segment and an opposite solder segment. The contact segment is at least partially exposed from the first side, and the solder segment is at least partially exposed from the second side. Each solder ball is connected to the solder segment of a corresponding conductive terminal. The spacer is disposed on the second side of the insulation housing and is positioned between adjacent solder balls.
The invention will now be described by way of example with reference to the accompanying Figures, of which:
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
Referring to
As shown in the figures, the electrical connector 100 includes an insulation housing 110 having opposite first and second sides, and an array of a plurality of conductive terminals 120 mounted within the insulation housing 110. Each conductive terminal 120 has a main body segment, and a contact segment 1201 and a solder segment 1202 respectively extending in opposite directions from opposite ends of the main body segment. The contact segment 1201 is at least partially exposed from the first side of the insulation housing 110, for making an electrical contact with a conductive terminal of a mating connector (not shown). The solder segment 1202 is at least partially exposed from the second side of the insulation housing 110. The electrical connector 100 further includes a plurality of solder balls 130. Each solder ball 130 is connected to the solder segment 1202 of a corresponding conductive terminal 120, for making an electrical connection, such as electrical contact or soldering, to a circuit board (not shown).
According to an embodiment of the present disclosure, as shown in
In an exemplary embodiment, as shown in
As shown in
In some embodiments, the plurality of conductive terminals 120 may be arranged in multiple columns within the insulation housing 110. For example, the electrical connector 100 may include a hybrid connector, for instance, the plurality of conductive terminals 120 installed in the insulation housing 110 may also include a plurality of ground terminals 121, a plurality of signal terminals 122 and a plurality of power terminals 123. A plurality of columns of the ground terminals 121 and a plurality of columns of the signal terminals 122 may be arranged within a central region 101 of the electrical connector 100. A plurality of columns of the power terminals 123 may be arranged in an edge region 102 of the electrical connector, as shown in
In some examples, the spacer 140 may abut against the first frame-shaped body 111 and/or the first partition wall 113 of the insulation housing 110. As shown in
Still referring to
The fastening structure 114 may be formed integrally with the insulation housing 110 or be formed individually and mounted to the insulation housing 110. For example, in some examples, the insulation housing 110 is initially formed a pillar body at the edge position or other appropriate positions. After assembling the spacer 140 into the insulation housing 110, the pillar body is inserted into the connection hole 144 formed within the spacer 140. Then, a part of the pillar body on the side of the connection hole 144 facing away from the insulation housing 110 is melted through thermal riveting or hot melt. This forms a large-diameter disk-like part or head 1142 so as to fix the spacer to the insulation housing 110.
In other examples, as shown in
The side of the spacer 140 facing away from the insulation housing 110 is formed with a recess 142. The recess 142 is in communication with the connection hole 144 and has an inner diameter greater than the connection hole 144 to accommodate the large-diameter head 1142 of the fastening structure 114. Additionally, or alternatively, the spacer and the insulation housing may also be fixedly or detachably connected or assembled together with each other by fasteners. For example, suitable fasteners may include fixtures, screws, or other threaded connections, but the present disclosure is not limited thereto.
In the shown embodiment, the electrical connector 100 further includes a conductive housing 150, which can be positioned between the insulation housing 110 and the spacer 140. For example, the conductive housing 150 may be at least inserted partially in the insulation housing 110. The plurality of conductive terminals 120 is mounted in both the insulation housing 110 and the conductive housing 150. The conductive housing 150 is in contact with the plurality of ground terminals 121 to electrically connect the plurality of ground terminals together. As shown in
As shown in
As shown, the conductive housing 150 may also be formed with the connection hole 154, for example at the edge position of its second frame-shaped main body 151, to facilitate engagement with the fastening structure 114. In this way, the insulation housing 110, the conductive housing 150 and the spacer 140 may be sequentially stacked and assembled fixedly relative to each other.
As an example, the conductive housing is formed by Physical Vapor Deposition (PVD) technology or Molded Interconnect Device (MID) technology and assembled on the insulation housing 110. The MID technology refers to the technology of manufacturing or installing the components with an electrical function on the surface of the injection-molded plastic housing, so as to combine the electrical interconnection function of the components and the mechanical support function of the plastic housing. In other embodiments, other technologies that can metalize the plastic surface may also be used to form the conductive housing over the insulation housing.
In addition, those areas in which it is believed that those of ordinary skill in the art are familiar, have not been described herein in order not to unnecessarily obscure the invention described. Accordingly, it has to be understood that the invention is not to be limited by the specific illustrative embodiments, but only by the scope of the appended claims.
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and proceeded with the word “a” or “an” should be understood as not excluding plural of the elements or steps, unless such exclusion is explicitly stated. Furthermore, references to “one embodiment” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments “comprising” or “having” an element or a plurality of elements having a particular property may include additional such elements not having that property.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202211283574.5 | Oct 2022 | CN | national |
