CN115966928A - Electrical connection device - Google Patents

Abstract

An electrical connection device comprises a core unit and a contact unit positioned on the core unit. The core unit comprises a first insulating layer, a plurality of signal pieces, a first grounding piece and a second grounding piece which are arranged in the first insulating layer, and a first grounding plane which is electrically connected with the first grounding piece and the second grounding piece. The contact unit comprises a plurality of first contact pieces and a plurality of second contact pieces, wherein the first contact pieces are respectively connected with the signal pieces, and the second contact pieces are respectively connected with the first grounding pieces. Each first contact and the respective signal element are electrically independent from the first ground plane, and each second contact, the corresponding first ground element and at least one second ground element together surround the adjacent first contact. Thereby being beneficial to the separable electric connection in response to the micro-scale and being capable of shielding the signal transmission.

Description

Electrical connection device

Technical Field

The present invention relates to electrical connectors, and particularly to an electrical connector for transmitting electrical signals.

Background

The electrical connector is used for connecting two or more electronic components, and is not only configured in relatively macroscopic electronic equipment, but also formed with a relatively tiny electrical connection structure even on a printed circuit board or an integrated circuit, so that the purpose of forming electrical connection among a plurality of specific areas is achieved. In some applications, the electrical connector is designed to be detachably connected to facilitate removing a part of a faulty component or replacing a specific component, and in such a consideration, the reliability of connection and the detachable performance of the electrical connector become important in design. Spring structures, bundled wires, cantilever beams, micro-sheet metal structures, all examples of such applications are metal stamped and formed as is currently known in the art.

Taking the Land Grid Array (LGA) and Ball Grid Array (BGA) packages commonly used in the semiconductor industry as examples, the two packages are usually selected to be electrically connected to a pcb or a chip module in a detachable manner. However, both the Land Grid Array (LGA) package and the Ball Grid Array (BGA) package have advantages and disadvantages, and have suitable application environments, which cannot generally produce satisfactory connection performance for various electrical connection requirements. Particularly, under the vigorous development of the semiconductor industry, the Size (Size) and Pitch (Pitch) of the conventional electrical connection technology are not only cost-effective or connection performance challenges at a scale of less than 250 micrometers, but it is more difficult to provide an ideal solution for achieving separable and repeatable electrical connection under the various limitations of processing accuracy, manufacturing cost and structural strength if the Size is further reduced to a scale of less than 50 micrometers.

Disclosure of Invention

The present invention is directed to an electrical connection device that facilitates separable and repeatable electrical connection in response to a micro-scale.

The invention relates to an electrical connection device, which comprises a core unit and a contact unit positioned on the core unit. The core unit comprises a first insulating layer, a plurality of signal pieces arranged in the first insulating layer, a plurality of first grounding pieces arranged in the first insulating layer, a plurality of second grounding pieces arranged in the first insulating layer, and a first grounding plane electrically connected with the first grounding pieces and the second grounding pieces. The contact unit includes a plurality of first contacts respectively connected to the signal parts, and a plurality of second contacts respectively connected to the first ground parts. Each first contact and the respective signal element are electrically independent from the first ground plane, and each second contact, the corresponding first ground element and at least one second ground element together surround the adjacent first contact.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Preferably, in the electrical connection device, a first direction and a second direction perpendicular to the first direction are defined, each first contact of the contact unit is adjacent to another first contact along the first direction, and is adjacent to at least one second grounding piece along the second direction, and each first contact is surrounded by at least one adjacent first grounding piece, the corresponding second contact and the at least one second grounding piece, so as to form an electrical shield with another first contact.

Preferably, in the electrical connection device, the first contact members of the contact unit are grouped in pairs to transmit signals, and the two first contact members of each group are surrounded by at least one adjacent second contact member, the corresponding first grounding member, and at least one adjacent second grounding member.

Preferably, in the electrical connection device, the first insulating layer has two outer surfaces respectively located at opposite sides, the first ground plane is attached to one of the outer surfaces of the first insulating layer, the electrical connection device further includes a second ground plane attached to the other outer surface of the first insulating layer opposite to the first ground plane and electrically connected to the first ground element and the second ground element, wherein each signal element and each first contact element are electrically independent from the first ground plane and the second ground plane.

Preferably, in the electrical connection device, the first ground plane has a plurality of first through grooves penetrating the first ground plane and allowing the plurality of signal elements to pass through the first ground plane without contacting the ground, and the second ground plane has a plurality of second through grooves penetrating the second ground plane and allowing the plurality of signal elements to pass through the second ground plane without contacting the ground, so that the signal elements and the first contact elements are electrically independent from the first ground plane and the second ground plane.

Preferably, in the electrical connection device, the signal elements, the first ground elements and the second ground elements of the core unit are arranged in an array along the first direction and the second direction, and a first spacing distance along the first direction is greater than a second spacing distance along the second direction.

Preferably, in the electrical connection device, the contact unit further includes a plurality of third contact members respectively connected to the signal members and located at opposite sides of the first contact members, and a plurality of fourth contact members respectively connected to the first ground member and located at opposite sides of the second contact members, each of the third contact members and the respective signal member being electrically independent from the first ground plane.

Preferably, in the electrical connection device, the core unit further includes a second insulating layer spaced apart from the first insulating layer, and a third ground plane disposed between the first insulating layer and the second insulating layer, and the third ground plane has a ground surface layer formed on an outer surface thereof, and at least one signal line formed on the outer surface and electrically independent from the ground surface layer.

Preferably, in the electrical connection device, a part of the signal element of the core unit is electrically connected to the at least one signal line.

The invention has the beneficial effects that: the first contact and the second contact can replace the prior Land Grid Array (LGA) and ball array (BGA) packages, achieve the purpose of separable electrical connection, and can utilize a simple stacked assembly mode to further reduce the dimension. In addition, when the signal is transmitted through the first contact piece and the signal piece, because the first grounding piece, the second contact piece and the second grounding piece are arranged in a surrounding mode, electric shielding can be generated, and the performance of signal transmission is optimized.

Drawings

FIG. 1 is an exploded perspective view of a first embodiment of the electrical connection device of the present invention;

fig. 2 is an enlarged perspective exploded view illustrating one of the signal members, one of the first ground members, and one of the second ground members of a core unit of the first embodiment;

fig. 3 is a partially enlarged sectional view illustrating the signal member, the first ground member, and the second ground member disposed on an insulating layer of the core unit;

FIG. 4 is a top view illustrating a contact unit of the first embodiment;

fig. 5 is a partially enlarged perspective view illustrating a case where signal shielding is achieved using a plurality of first ground elements and a plurality of second ground elements of the core unit;

FIG. 6 is an exploded perspective view illustrating the assembled configuration of the first embodiment and the condition of the first embodiment electrically connecting to a component to be connected;

FIG. 7 is an exploded perspective view of a second embodiment of the electrical connection device of the present invention;

fig. 8 is a partially enlarged perspective view illustrating first and second plurality of through slots on a first and second ground planes of the second embodiment;

FIG. 9 is an exploded perspective view illustrating a third embodiment of the electrical connection device of the present invention; and

fig. 10 is a partially enlarged perspective exploded view illustrating a third ground plane of the core unit of the third embodiment and a plurality of signal lines of the third ground plane.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, a first embodiment of the electrical connection device of the present invention includes a core unit 1 and a contact unit 2 positioned on the core unit 1. In addition, in order to completely package the first embodiment, two package plates 9 respectively located at two opposite sides and at the outermost layer are also used, and each package plate 9 is assembled and fixed by the corresponding adhesive layer 91. It should be noted that, although the first embodiment is described in the case where two electronic components are connected to two opposite sides respectively, and the connection points are distributed in two dimensions, the practical use is not limited to the use situation of connecting the two opposite sides, and the connection point form is not limited to the two-dimensional distribution.

Referring to fig. 1 and 2, the core unit 1 includes a first insulating layer 11 having two outer surfaces 111 respectively located at opposite sides, a plurality of signal elements 12 disposed in the first insulating layer 11, a plurality of first ground elements 13 disposed in the first insulating layer 11, a plurality of second ground elements 14 disposed in the first insulating layer 11, a first ground plane 15 attached to one outer surface 111 of the first insulating layer 11, and a second ground plane 16 attached to the other outer surface 111 of the first insulating layer 11 opposite to the first ground plane 15. In fig. 2, the signal element 12, the first ground element 13, and the two second ground elements 14 are shown as a group. Specifically, the first insulating layer 11 is formed with the same number of through holes 110 as the total number of the signal elements 12, the first ground elements 13, and the second ground elements 14, and the through holes 110 are arranged in a two-dimensional array, and the signal elements 12, the first ground elements 13, and the second ground elements 14 are respectively embedded in the through holes 110 according to the circuit configuration requirement.

It should be noted that each signal element 12, each first ground element 13, and each second ground element 14 are substantially identical in type, and only have different roles in achieving electrical connection in cooperation with each other. In the first embodiment, each signal element 12, each first ground element 13, and each second ground element 14 are generally cylindrical, and two opposite ends of the signal element 12, each first ground element 13, and each second ground element 14 are respectively formed with two circular plate-shaped connection points.

The first ground plane 15 and the second ground plane 16 are formed on two opposite sides of the first insulating layer 11, and are made of conductive material. In accordance with the positions of the through holes 110 formed on the first insulating layer 11, holes H are formed on the first ground plane 15 and the second ground plane 16. Each hole H1 corresponding to the respective first ground element 13 and the respective second ground element 14 is tightly fitted with the first ground element 13 and the second ground element 14, and each hole H2 corresponding to the respective signal element 12 has a larger diameter for allowing only the respective signal element 12 to pass through without contact, so that the first ground element 13 and the second ground element 14 are electrically connected to the first ground plane 15 and the second ground plane 16, and each signal element 12 is electrically independent from the first ground plane 15 and the second ground plane 16.

Referring to fig. 2 to 4, a first direction D1 and a second direction D2 perpendicular to the first direction D1 are defined, and the contact unit 2 includes a plurality of first contacts 21 respectively connected to the signal element 12, a plurality of second contacts 22 respectively connected to the first ground element 13, a plurality of third contacts 23 respectively connected to the signal element 12 and located opposite to the signal element 12 from the first contacts 21, and a plurality of fourth contacts 24 respectively connected to the first ground element 13 and located opposite to the first ground element 13 from the second contacts 22.

It is to be noted that the pattern of each first contact member 21, each second contact member 22, each third contact member 23, and each fourth contact member 24 is the same. In the first embodiment, the connecting arm extends in the transverse direction but inclines in the longitudinal direction, so that the connecting arm is elastically deformed towards the inner side under the action of external force. The elastic deformation can be achieved by the material elasticity of the metal material itself in cooperation with the bending form, or can be achieved by arranging a spring, which is not limited to the description of the first embodiment or the illustration in the drawings.

The signal elements 12, the first ground elements 13, and the second ground elements 14 are arranged in an array by extending in the first direction D1 and the second direction D2. Therefore, if the contact unit 2 is connected to the signal element 12, the first ground element 13, and the second ground element 14 as shown in the top view of fig. 4, each first contact 21 is adjacent to another first contact 21 along the first direction D1 and adjacent to one of the second ground elements 14 along the second direction D2, that is, the signal element 12 and the first ground element 13 connecting the first contact 21 and the second contact 22, and the second ground element 14 are arranged at intervals along the first direction D1 by a first interval distance L1, and the row of the signal element 12 and the first ground element 13 is arranged at intervals along the second direction D2 by a second interval distance L2 with the second ground element 14. Since each of the first contact members 21 and each of the second contact members 22 have a flexible structure, the first spacing distance L1 is greater than the second spacing distance L2, thereby reserving a margin space when the first contact members 21 and the second contact members 22 are deformed. Of course, the third contact 23 and the fourth contact 24 (see fig. 2) on the other side opposite to fig. 4 also correspond in position to the first contact 21 and the second contact 22, respectively, accordingly.

Referring to fig. 4 and 5 in conjunction with fig. 1, in the first embodiment, the transmission of the electrical signal is achieved through each first contact member 21 via the corresponding signal element 12, that is, the transmission of the electrical signal in Single-ended mode. Therefore, in order to achieve signal shielding for each first contact member 21 and the corresponding signal member 12, as shown in fig. 4, for example, two second contact members 22 and the corresponding first ground members 13 are respectively disposed on two opposite sides along the first direction D1, and three second ground members 14 are respectively disposed in a row on two opposite sides along the second direction D2, so that the first contact members 21 and the corresponding signal members 12 are commonly surrounded by the adjacent second contact members 22 and the corresponding first ground members 13, and the second ground members 14, thereby achieving electrical shielding of the transmitted signals.

Referring to fig. 6 in conjunction with fig. 3 and 5, in the first embodiment, the first contact member 21 and the second contact member 22 can be electrically connected to a to-be-connected component 8 having a plurality of corresponding electrical contacts 81, and after contacting the to-be-connected component 8 as shown in fig. 6, the first contact member 21 and the second contact member 22 are deformed in a direction away from the to-be-connected component 8, and at this time, since each package board 9 is formed with a groove 90 corresponding to the shape of the first contact member 21 and the second contact member 22, a margin space is provided after the first contact member 21 and the second contact member 22 are deformed. Therefore, the first embodiment can simply complete the assembly by the stacking mechanism, and can directly complete the manufacturing and assembly with the required dimensions by almost the same process without further requiring the processing precision for the scale reduction, that is, the detachable electrical connection can be surely achieved at a small scale by the simple connection of the signal piece 12, the first ground piece 13, the second ground piece 14 and the contact unit 2.

Referring to fig. 7 and 8, a second embodiment of the electrical connection device of the present invention is shown, which is different from the first embodiment in that: the first contact members 21 are paired to transmit signals, that is, the first contact members 21 transmit electrical signals in Differential signal pairs (Differential signal pairs). In addition, in order to cooperate with the two adjacent first contact members 21 and the third contact members 23 and the corresponding signal elements 12 to form a group for transmitting an electrical signal, the first ground plane 15 has a plurality of first through grooves 150 penetrating the signal elements 12 without contacting, and the second ground plane 16 has a plurality of second through grooves 160 penetrating the signal elements 12 without contacting, such that the signal elements 12 and the first contact members 21 are electrically independent from the first ground plane 15 and the second ground plane 16.

In order to shield the first contact member 21 and the third contact member 23 transmitting signals from signals, the same signal shielding as that of the corresponding signal member 12 is generated by the second contact member 21, which is a set of two first contact members as shown in fig. 8, and the two adjacent second contact members 22 and the corresponding first ground member 13 which are located at two opposite sides along the first direction D1, and the two opposite rows of the second ground members 14 which are arranged at intervals along the second direction D2, and the four rows of the second ground members 14 are commonly surrounded, thereby achieving shielding of electrical signals and optimizing the quality and performance of electrical signal transmission.

Referring to fig. 9 and 10, a third embodiment of the electrical connection device of the present invention is shown, which is different from the first embodiment in that: the core unit 1 further includes a second insulating layer 17 spaced apart from the first insulating layer 11, and a third ground plane 18 disposed between the first insulating layer 11 and the second insulating layer 17, where the third ground plane 18 has a ground surface region 181 formed on an outer surface thereof, and a plurality of signal lines 182 formed on the outer surface thereof and electrically independent from the ground surface region 181. Specifically, the ground surface layer 181 surrounds a plurality of reserved areas 180, which are also formed on the surface and in which the signal lines 182 are disposed on the same surface, so that the signal lines 182 disposed in the reserved areas 180 can be surrounded by the solid structure of the ground surface layer 181. A portion of the signal element 12 of the core unit 1 is electrically connected to the signal line 182, that is, the third embodiment also transmits the electrical signal through the signal element 12.

In addition to the advantages of the third embodiment that the reduction of the scale is facilitated and the detachable electrical connection is achieved as in the first and second embodiments, the third embodiment also optimizes the quality and performance of the electrical signal transmission by relying on the grounding property of the third ground plane 18 to achieve the electrical shielding effect on the signal line 182 through the physical structure of the grounding surface region 181 surrounding the signal line 182.

Claims (9)

1. An electrical connection device; the method is characterized in that: the electrical connection device comprises:

a core unit comprising:

a first insulating layer, a second insulating layer,

a plurality of signal elements disposed in the first insulating layer,

a plurality of first ground members disposed in the first insulating layer,

a plurality of second ground members disposed in the first insulating layer, an

A first ground plane electrically connected to the first ground member and the second ground member; and

a contact unit positioned at the core unit and including

A plurality of first contacts respectively connected to the signal elements, each first contact and the respective signal element being electrically independent of the first ground plane, an

And the second contact pieces are respectively connected with the first grounding pieces, and each second contact piece, the corresponding first grounding piece and at least one second grounding piece jointly surround the adjacent first contact pieces.

2. The electrical connection device of claim 1, wherein: the first direction and a second direction perpendicular to the first direction are defined, each first contact of the contact unit is adjacent to another first contact along the first direction and adjacent to at least one second grounding piece along the second direction, and each first contact is surrounded by at least one adjacent first grounding piece, the corresponding second contact and at least one second grounding piece, so as to form an electric shield with another first contact.

3. The electrical connection device of claim 1, wherein: the first contact pieces of the contact unit are grouped in pairs to be matched with each other for transmitting signals, and the two first contact pieces of each group are surrounded by at least one adjacent second contact piece, the corresponding first grounding piece and at least one adjacent second grounding piece.

4. The electrical connection device of claim 1, wherein: the first insulating layer is provided with two outer surfaces which are respectively positioned at opposite sides, the first ground plane is attached to one of the outer surfaces of the first insulating layer, the electrical connection device further comprises a second ground plane which is attached to the other outer surface of the first insulating layer, which is opposite to the first ground plane, and is electrically connected with the first ground piece and the second ground piece, wherein each signal piece and each first contact piece are electrically independent from the first ground plane and the second ground plane.

5. The electrical connection device of claim 4, wherein: the first ground plane is provided with a plurality of first through grooves which are in a penetrating state and through which a plurality of signal elements can pass without contacting with each other, and the second ground plane is provided with a plurality of second through grooves which are in a penetrating state and through which a plurality of signal elements can pass without contacting with each other, so that the signal elements and the first contact elements are electrically independent from the first ground plane and the second ground plane.

6. The electrical connection device of claim 2, wherein: the signal parts and the first grounding parts of the core unit, and the second grounding parts are arrayed along the first direction and the second direction, and a first spacing distance along the first direction is greater than a second spacing distance along the second direction.

7. The electrical connection device of claim 1, wherein: the contact unit further includes a plurality of third contacts respectively connected to the signal elements and located on opposite sides of the first contacts, and a plurality of fourth contacts respectively connected to the first ground element and located on opposite sides of the second contacts, each of the third contacts and the respective signal element being electrically independent of the first ground plane.

8. The electrical connection device of claim 1, wherein: the core unit further comprises a second insulating layer spaced from the first insulating layer, and a third ground plane arranged between the first insulating layer and the second insulating layer, wherein the third ground plane is provided with a ground surface layer region formed on the outer surface, and at least one signal wire formed on the outer surface and electrically independent from the ground surface layer region.

9. The electrical connection device of claim 8, wherein: and one part of the signal piece of the core unit is electrically connected with the at least one signal wire.

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