CN213522493U - Circuit arrangement with metal foil - Google Patents
Circuit arrangement with metal foil Download PDFInfo
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- CN213522493U CN213522493U CN202021558311.7U CN202021558311U CN213522493U CN 213522493 U CN213522493 U CN 213522493U CN 202021558311 U CN202021558311 U CN 202021558311U CN 213522493 U CN213522493 U CN 213522493U
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Abstract
The utility model relates to a circuit arrangement with metal foil. The utility model provides a metal foil, it is a strip lamellar body to be formed with an at least breach. The present invention also provides a circuit device having a circuit board, at least one metal foil and a wire. The metal foil is arranged on the circuit board to be used as a signal contact. The wire is provided with at least one wire, and the wires are respectively arranged on the metal foils and cover the gaps of the metal foils. Therefore, a gap is formed in the gap and between the circuit board and the lead. Through the structure, the capacitance formed between the lead and the circuit board has the minimum capacitance value, and the impedance value generated jointly with the capacitance is the maximum, so that the upper limit of the impedance value regulation can be greatly improved. In addition, the capacitance value can be changed by adjusting the material in the gap and the area of the metal foil and the gap.
Description
Technical Field
The present invention relates to a circuit structure, and more particularly to a structure for transmitting signals on a circuit board.
Background
In the prior art, in order to electrically connect a circuit board and a wire, a metal foil is disposed at a contact of the circuit board, and the wire is soldered on the metal foil. Then, the welding point and the plastic forming inner mold layer (molding) are fixed by ultraviolet hardening glue to coat the welding position of the wire and the metal foil, so as to avoid the metal foil and the wire from being separated to form open circuit.
Because the conducting wire and the circuit board are both conductors, when the conducting wire is welded on the metal foil, the conducting wire and the circuit board are not contacted but are very close to each other in distance, so that the conducting wire and the circuit board can be regarded as a capacitor, and the impedance of the current passing through the contact point is changed. Although the capacitance can be reduced and the impedance can be improved by changing the thickness of the metal foil, the material of the metal foil and the conducting wire, the existing method can reduce the deficiency of the capacitance. In addition, after the welding position is covered by the ultraviolet curing glue or the plastic forming inner mold layer, the capacitance value is increased again, so that the capacitance value and the impedance value on the final product are not ideal.
Under the development of 5G communication, artificial intelligence, edge operation and Internet of things devices, the frequency of signals is higher and higher, the transmission quantity is larger and larger, and therefore the influence of the contact of the circuit on signal transmission is more and more obvious. In the past, the influence of the overlarge capacitance value on the signal quality is negligible under the low-frequency transmission, but the overlarge capacitance value gradually causes troubles when the transmission frequency is higher and higher.
In view of the above, a better solution is proposed, and a problem to be solved is needed in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a metal foil and have circuit arrangement of this metal foil, can control the capacitance value and the impedance value of the structure that forms in the processing procedure, and is more flexible in circuit arrangement's design, lets circuit arrangement can be applicable to the high frequency signal transmission under fields such as 5G communication, artificial intelligence, edge operation, thing networking device.
To achieve the above object, the present invention provides a circuit device having:
a circuit board;
at least one metal foil, each of which is a strip-shaped sheet body and is formed with at least one notch, the at least one metal foil is arranged on the circuit board and is electrically connected with the circuit board to be used as a signal contact;
a wire having at least one wire, the at least one wire being disposed on the at least one metal foil respectively and electrically connected to the at least one metal foil, and each of the at least one wire covering the at least one gap of the at least one metal foil;
at least one gap is arranged in the at least one gap and between the circuit board and the at least one lead.
Therefore, the utility model has the advantages that, the within range of the breach of metal foil forms the clearance, and wire and circuit board are by the clearance interval, and the air is located the clearance. Therefore, the capacitance formed between the conducting wire and the circuit board has the minimum capacitance value and the impedance value generated jointly with the capacitance is the maximum, thereby greatly improving the upper limit when the impedance value is regulated and controlled. On the other hand, in addition to adjusting the capacitance and impedance value by the material in the gap, the capacitance and impedance value can be changed by the area of the metal foil and the gap, so that the upper limit of the impedance value can be enlarged under the standard specification.
In the aforementioned metal foil, the strip sheet includes:
two long-side arm parts arranged at intervals; and
and two ends of the connecting part are respectively connected with the two long-edge arms, and the at least one notch is formed between the two long-edge arms and the connecting part.
In the metal foil as described above:
each long-side arm part is provided with a first end and a second end which are opposite;
the two ends of the connecting part are respectively connected with the first ends of the two long-edge arms; and is
The number of the at least one notch is one, and the notch is formed between the two long-edge arm parts and the connecting part.
In another embodiment of the metal foil:
each of the long-side arm portions includes:
a first end and a second end opposite to each other; and
a middle section located between the first end and the second end;
the two ends of the connecting part are respectively connected with the middle sections of the two long-edge arms; and is
The number of the at least one notch is two, wherein one notch is formed between the first end of the two long-edge arm parts and the connecting part, and the other notch is formed between the second end of the two long-edge arm parts and the connecting part.
In another embodiment of the metal foil:
the strip-shaped sheet body comprises:
two long-side arm portions provided at an interval therebetween, each of the long-side arm portions having:
a first end and a second end opposite to each other;
two connecting parts which are arranged at intervals, wherein two ends of one connecting part are respectively connected with the first ends of the two long-edge arm parts, and two ends of the other connecting part are respectively connected with the second ends of the two long-edge arm parts; and is
The number of the at least one gap is one, and the two long-edge arm parts and the two connecting parts surround the gap.
In another embodiment of the metal foil:
the strip-shaped sheet body comprises:
two long-side arm portions provided at an interval therebetween, each of the long-side arm portions having:
a first end and a second end opposite to each other; and
a middle section located between the first end and the second end;
three connecting parts which are arranged at intervals and respectively are:
a first connecting part, two ends of which are respectively connected with the first ends of the two long-edge arms;
a second connecting part, both ends of which are respectively connected with the second ends of the two long-edge arm parts; and
a third connecting part, both ends of which are respectively connected with the middle sections of the two long-edge arm parts; and is
The number of the at least one gap is two, and the two long-edge arm parts and two adjacent connecting parts surround one gap.
In the aforementioned circuit device, a width of a cross section of each of the at least one conductive line in a direction parallel to the circuit board is greater than a thickness of the cross section of each of the at least one conductive line in a direction perpendicular to the circuit board.
In the aforementioned circuit device, each of the at least one conductive line has an oval or rectangular cross section.
The circuit device further includes a wire-covering adhesive layer disposed at a position where the at least one conductive wire is connected to the at least one metal foil, and not located in the at least one gap.
Drawings
Fig. 1 is a schematic perspective view of the circuit device of the present invention.
Fig. 2 is a schematic perspective view of a circuit board and a metal foil in the circuit device according to the present invention.
Fig. 3 is a schematic diagram of a metal foil and a wire in the circuit device according to the present invention.
Fig. 4 is a schematic view of a first embodiment of the metal foil of the present invention.
Fig. 5 is a schematic view of a second embodiment of the metal foil of the present invention.
Fig. 6 is a schematic view of a third embodiment of the metal foil of the present invention.
Fig. 7 is a schematic view of a fourth embodiment of the metal foil of the present invention.
Fig. 8 is a schematic cross-sectional view of a metal foil and a circular wire of the circuit device of the present invention on the cut line a-a of fig. 3.
Fig. 9 is a schematic cross-sectional view of a metal foil and an elliptical conductive wire in a circuit device according to the present invention.
Fig. 10 is a schematic cross-sectional view of a metal foil and a rectangular wire in a circuit device according to the present invention.
Fig. 11 is a schematic perspective view of the circuit board and the wire-covering adhesive layer of the circuit device of the present invention.
Detailed Description
Please refer to fig. 1, fig. 8, and fig. 11 first. The present invention provides a circuit device, which comprises a circuit board 10, at least one metal foil 20, and a wire 30, and optionally a wire-covering adhesive layer 40. In addition, the circuit device is formed with at least one gap 50.
Please refer to fig. 2 to fig. 4. The metal foil 20 is disposed on the circuit board 10 and electrically connected to the circuit board 10. In the present embodiment, there are a plurality of metal foils 20 in total. Therefore, the metal foil 20 can be used as a signal contact of the circuit board 10. The metal foil 20 may be a strip-shaped sheet and is formed with at least one notch 200.
In the first form of the metal foil 20, the strip-shaped body includes two long-side arms 21 and a connecting portion 22. The two long-side arm portions 21 are disposed at intervals, and both ends of the connecting portion 22 are connected to the two long-side arm portions 21, respectively. Thus, a gap 200 is formed between the two long-side arm portions 21 and the connecting portion 22. In other words, each metal foil 20 in the first form has a notch 200. Specifically, each long-side arm portion 21 has a first end and a second end opposite to each other, and both ends of the connecting portion 22 are connected to the first ends of the two long-side arm portions 21, respectively, and thus the notch 200 is formed between the two long-side arm portions 21 and the connecting portion 22. In other words, the metal foil 20 has a U-shape, and the notch 200 is formed in the U-shape.
Please refer to fig. 5. In the second form of the metal foil 20A, the strip-shaped body also includes two long-side arms 21A and a connecting portion 22A. The two long-side arm portions 21A are provided at intervals, and both ends of the connecting portion 22A are connected to the two long-side arm portions 21A, respectively. The second form of the metal foil 20A differs from the first form in that each long-side arm portion 21A has a first end and a second end opposite to each other, and a middle section located between the first end and the second end, and both ends of the connecting portion 22A are connected to the middle sections of the two long-side arm portions 21A, respectively. Thus, the second form has two notches 200A, and the metal foil 20A is H-shaped, and the notches 200A are formed in the H-shape. Specifically, one of the notches 200A is formed between the first ends of the two long-side arm portions 21A and the connecting portion 22A, and the other notch 200A is formed between the second end of the two long-side arm portions 21A and the connecting portion 22A.
Please refer to fig. 6. In the third form of the metal foil 20B, the strip-shaped body includes two long-side arm portions 21B and two connecting portions 22B. The two long-side arm portions 21B are provided at intervals, and the two connecting portions 22B are also provided at intervals, and both ends of the two connecting portions 22B are connected to the two long-side arm portions 21B, respectively. Each long-side arm portion 21B has a first end and a second end opposite to each other, and two ends of one connection portion 22B are connected to the first ends of the two long-side arm portions 21B, respectively, and two ends of the other connection portion 22B are connected to the second ends of the two long-side arm portions 21B, respectively. In other words, the metal foil 20B forms a closed ring shape (or a square shape), the number of the notches 200B is one, and the two long-side arm portions 21B and the two connecting portions 22B surround the notches 200B.
Please refer to fig. 7. In the fourth form of the metal foil 20C, the strip-shaped body includes two long-side arm portions 21C and three connecting portions 22C. The two long-side arm portions 21C are provided at intervals, the three connecting portions 22C are also provided at intervals, and both ends of the three connecting portions 22C are connected to the two long-side arm portions 21C, respectively. Each long-side arm portion 21C has a first end and a second end opposite to each other, and an intermediate portion located between the first end and the second end. The three connection portions 22C may be a first connection portion 221C, a second connection portion 222C, and a third connection portion 223C, respectively. Both ends of the first connection portion 221C are connected to the first ends of the two long-side arm portions 21C, both ends of the second connection portion 222C are connected to the second ends of the two long-side arm portions 21C, and both ends of the third connection portion 223C are connected to the middle sections of the two long-side arm portions 21C. In other words, the metal foil 20C forms an 8 shape (or a zigzag shape), and the number of the notches 200C is two, and the two long-side arm portions 21C and the two adjacent connecting portions 22C surround one notch 200C.
Please refer to fig. 3 and fig. 8 to fig. 10. The wire 30 has at least one conductive line 31, and the number of the conductive lines 31 may be equal to the number of the metal foils 20. The wires 31 are respectively disposed on the metal foils 20 and electrically connected to the disposed metal foils 20. And each wire 31 covers the gap 200 of the connected metal foil 20, thereby forming a gap 50 within the gap 200. Specifically, the gap 50 is formed in the notch 200 and between the circuit board 10 and the conductive line 31. The cross-section of each wire 31 may be circular, oval, rectangular, or the like. Wherein, the width of the cross section of the conducting wire 31 in the direction parallel to the circuit board 10 is larger than the thickness of the cross section of the conducting wire 31 in the direction perpendicular to the circuit board 10. Please refer to fig. 1, fig. 8, and fig. 11 again. The wire-covering adhesive layer 40 is disposed at a position where the conductive wire 31 is connected to the metal foil 20, and is not located in the gap 50. In other words, within the range of the gap 200, the wires 31 are spaced apart from the circuit board 10 and only have air therein. The wire-covering glue layer 40 may comprise a uv-curing glue layer or a plastic-formed inner mold layer.
In other embodiments, the shape of the metal foil 20 and the cross-section of the conductive line 31 are not limited to the above disclosure.
With the above structure, the gap 50 is formed in the range of the notch 200 of the metal foil 20, and the conductive line 31 and the circuit board 10 are spaced by the gap 50, and air is located in the gap 50. Therefore, a capacitor is formed between the conductive wire 31 and the circuit board 10, and the capacitor uses air as the dielectric. Because the dielectric coefficient of air is minimum, the formed capacitor has the minimum capacitance value and the impedance value generated jointly is maximum, thereby greatly improving the upper limit when the impedance value is regulated and controlled. On the other hand, in addition to adjusting the capacitance and the impedance value by the material in the gap 50, the capacitance and the impedance value can be changed by the area size of the metal foil 20 and the gap 200. For example, the thickness of the metal foil 20, the width of the long-side arm portion 21 or the connecting portion 22, the spacing between the two long-side arm portions 21, the number of the connecting portions 22, and the like may be changed to expand the upper limit of the resistance value under the standard specification.
In addition, the width of the conductive line 31 is larger than the thickness, so that the contact area with the metal foil 20 can be maintained under the same cross-sectional area, and the conductive line 31 is prevented from protruding into the notch 200. Therefore, the conductive wires 31 and the metal foil 20 can be firmly connected, and the capacitance formed between the conductive wires 31 and the circuit board 10 can be reduced, thereby further improving the impedance value.
Therefore, through the utility model discloses can control the capacitance value and the impedance value of the structure that forms in the processing procedure, it is more flexible in circuit arrangement's design, let circuit arrangement can be applicable to the high frequency signal transmission under fields such as 5G communication, artificial intelligence, edge operation, thing networking device.
Claims (9)
1. A circuit device having a metal foil, the circuit device comprising:
a circuit board;
at least one metal foil, each of which is a strip-shaped sheet body and is formed with at least one notch, the at least one metal foil is arranged on the circuit board and is electrically connected with the circuit board to be used as a signal contact;
a wire having at least one wire, the at least one wire being disposed on the at least one metal foil respectively and electrically connected to the at least one metal foil, and each of the at least one wire covering the at least one gap of the at least one metal foil;
at least one gap is arranged in the at least one gap and between the circuit board and the at least one lead.
2. The circuit device with metal foil of claim 1, wherein the strip body comprises:
two long-side arm parts arranged at intervals; and
and two ends of the connecting part are respectively connected with the two long-edge arms, and the at least one notch is formed between the two long-edge arms and the connecting part.
3. The circuit device with metal foil of claim 2, wherein:
each long-side arm part is provided with a first end and a second end which are opposite;
the two ends of the connecting part are respectively connected with the first ends of the two long-edge arms; and is
The number of the at least one notch is one, and the notch is formed between the two long-edge arm parts and the connecting part.
4. The circuit device with metal foil of claim 2, wherein:
each of the long-side arm portions includes:
a first end and a second end opposite to each other; and
a middle section located between the first end and the second end;
the two ends of the connecting part are respectively connected with the middle sections of the two long-edge arms; and is
The number of the at least one notch is two, wherein one notch is formed between the first end of the two long-edge arm parts and the connecting part, and the other notch is formed between the second end of the two long-edge arm parts and the connecting part.
5. The circuit device with metal foil of claim 1, wherein:
the strip-shaped sheet body comprises:
two long-side arm portions provided at an interval therebetween, each of the long-side arm portions having:
a first end and a second end opposite to each other;
two connecting parts which are arranged at intervals, wherein two ends of one connecting part are respectively connected with the first ends of the two long-edge arm parts, and two ends of the other connecting part are respectively connected with the second ends of the two long-edge arm parts; and is
The number of the at least one gap is one, and the two long-edge arm parts and the two connecting parts surround the gap.
6. The circuit device with metal foil of claim 1, wherein:
the strip-shaped sheet body comprises:
two long-side arm portions provided at an interval therebetween, each of the long-side arm portions having:
a first end and a second end opposite to each other; and
a middle section located between the first end and the second end;
three connecting parts which are arranged at intervals and respectively are:
a first connecting part, two ends of which are respectively connected with the first ends of the two long-edge arms;
a second connecting part, both ends of which are respectively connected with the second ends of the two long-edge arm parts; and
a third connecting part, both ends of which are respectively connected with the middle sections of the two long-edge arm parts; and is
The number of the at least one gap is two, and the two long-edge arm parts and two adjacent connecting parts surround one gap.
7. The circuit device as claimed in any of claims 1 to 6, wherein a cross-section of each of the at least one conductive line has a width in a direction parallel to the circuit board that is greater than a thickness in a direction perpendicular to the circuit board.
8. The circuit device of any of claims 1 to 6, wherein each of the at least one conductive line has an oval or rectangular cross-section.
9. The circuit device as claimed in any of claims 1 to 6, further comprising a wire-covering adhesive layer disposed at a position where the at least one conductive wire is connected to the at least one metal foil and not located in the at least one gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021558311.7U CN213522493U (en) | 2020-07-30 | 2020-07-30 | Circuit arrangement with metal foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021558311.7U CN213522493U (en) | 2020-07-30 | 2020-07-30 | Circuit arrangement with metal foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213522493U true CN213522493U (en) | 2021-06-22 |
Family
ID=76436759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021558311.7U Active CN213522493U (en) | 2020-07-30 | 2020-07-30 | Circuit arrangement with metal foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213522493U (en) |
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2020
- 2020-07-30 CN CN202021558311.7U patent/CN213522493U/en active Active
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