Flexible cable
In accordance with an aspect of the disclosure, a cable comprises a flexible cable portion; and an end cable portion connected to one end of the flexible cable portion, wherein the flexible cable portion comprises: a first wire comprising one or more signal transmission lines; and a second wire comprising one or more fill-cut areas corresponding to the signal transmission lines and at least one or more ground lines.
1. A flexible cable comprising: a flexible cable portion; and
an end cable portion connected to one end of the flexible cable portion,
wherein the flexible cable portion comprises:
a first wire including one or more signal transmission lines and one or more ground lines disposed on a first metal foil insulation layer; and
a second wire including a metal foil separate from the one or more ground lines, and
one or more fill-cut areas in which portions of the metal foil are removed at locations corresponding to the one or more signal transmission lines and at least one or more ground lines, wherein the one or more signal transmission lines are surrounding by the first metal foil insulation layer and a first insulation layer;
wherein an air gap is defined between the first wire and the second wire, such that the one or more fill-cut areas are separated from the one or more signal transmission lines by at least the air gap, wherein the first metal foil insulation layer is disposed between the one or more signal transmission lines and the air gap.
2. The flexible cable of claim 1 , wherein the first wire further comprises:
a first shield layer; and
a first metal foil clad laminate comprising the one or more signal transmission lines.
3. The flexible cable of claim 2 , wherein the first metal foil clad laminate comprises:
a first metal foil layer comprising the one or more signal transmission lines; and
the first metal foil insulation layer.
4. The flexible cable of claim 3 , wherein the first metal foil layer is disposed between the first insulation layer and the first metal foil insulation layer.
5. The flexible cable of claim 3 , wherein the first metal foil layer comprises the one or more ground lines.
6. The flexible cable of claim 3 , wherein a first ground line is located at a center in a transverse direction of the first metal foil layer, and a second ground line and a third ground line are disposed on opposite sides of the first ground line to be spaced apart from each other by a distance corresponding to the one or more fill-cut areas.
7. The flexible cable of claim 6 , wherein the first metal foil layer comprises:
a first signal transmission line disposed between the first ground line and the second ground line such that the first ground line and the second ground line are spaced apart from each other; and
a second signal transmission line disposed between the first ground line and the third ground line such that the first ground line and the third ground line are spaced apart from each other.
8. The flexible cable of claim 1 , wherein the second wire comprises: a second metal foil clad laminate comprising the one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines; and a first insulation layer joined to the second metal foil clad laminate.
9. The flexible cable of claim 8 , wherein the second metal foil clad laminate comprises: a second metal foil insulation layer disposed in a direction facing the first wire; and a second metal foil layer comprising the one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines of the first wire.
10. The flexible cable of claim 1 , wherein the end cable portion comprises:
a shield layer;
a first metal foil clad laminate connected to the first wire and comprising the one or more signal transmission lines;
a second metal foil clad laminate connected to the second wire and comprising at least one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines of the first wire;
a third metal foil clad laminate;
a second insulation layer disposed between the shield layer and the third metal foil clad laminate;
a first bonding layer configured to laminate the first metal foil clad laminate and the third metal foil clad laminate;
a second bonding layer configured to laminate the first metal foil clad laminate and the second metal foil clad laminate; and
a connector connected to a metal foil of the second metal foil clad laminate.
11. The flexible cable of claim 10 , wherein the first bonding layer and the second bonding layer are prepregs or bonding sheets.
12. The flexible cable of claim 10 , further comprising a third wire comprising ground or a metal pattern.
13. The flexible cable of claim 12 , wherein the metal pattern of the third wire has a mesh structure.
14. The flexible cable of claim 12 , wherein the third wire comprises:
a fourth metal foil clad laminate comprising ground or the metal pattern; and
a third insulation layer configured to protect ground or the metal pattern.
15. The flexible cable of claim 14 , wherein the end cable portion further comprises:
a first shield layer, a second shield layer and a third shield layer, the third shield layer configured to protect the second wire from the outside and shield electron magnetic wave interferences; and
a fifth metal foil clad laminate connected to the first wire and comprising the one or more signal transmission lines;
a sixth metal foil clad laminate connected to the second wire and comprising one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines of the first wire;
a seventh metal foil clad laminate;
an eighth metal foil clad laminate;
a fourth insulation layer disposed between the shield layer and the fifth metal foil clad laminate;
a third bonding layer configured to laminate the fifth metal foil clad laminate and the seventh metal foil clad laminate;
a fourth bonding layer configured to laminate the fifth metal foil clad laminate and the sixth metal foil clad laminate;
a fifth bonding layer configured to laminate the fourth metal foil clad laminate and the sixth metal foil clad laminate; and
a sixth bonding layer configured to laminate the eighth metal foil clad laminate and the fourth metal foil clad laminate; and
wherein the connector is connected to a metal foil of the eighth metal foil clad laminate.
16. The flexible cable of claim 15 , wherein the third bonding layer, the fourth bonding layer, the fifth bonding layer, and the sixth bonding layer are prepregs or bonding sheets.
17. The flexible cable of claim 14 , wherein the first wire comprises:
a first shield layer configured to protect the first wire from the outside and shield electron magnetic wave interferences;
the first metal foil clad laminate comprising the one or more signal transmission lines; and
the first insulation layer disposed between the shield layer and the first metal foil clad laminate.
18. The flexible cable of claim 17 , wherein the first metal foil clad laminate comprises:
a first metal foil layer comprising the one or more signal transmission lines; and
the first metal foil insulation layer configured to insulate signal radiation of the first metal foil layer.
19. The flexible cable of claim 14 , wherein the second wire comprises:
the second metal foil clad laminate comprising the one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines; and
a second insulation layer joined to the second metal foil clad laminate.
20. The flexible cable of claim 19 , wherein the second metal foil clad laminate comprises:
a second metal foil insulation layer disposed in a direction facing the first wire; and
a second metal foil layer comprising the at least one or more fill-cut areas corresponding to the one or more signal transmission lines and the one or more ground lines.
21. A cable comprising:
a flexible cable portion; and
an end cable portion connected to one end of the flexible cable portion, wherein the flexible cable portion comprises:
a first wire including a plurality of signal transmission lines and one or more ground lines; and
a second wire including a metal foil separate from the one or more ground lines of the first wire, one or more ground lines, and a plurality of fill-cut areas in which portions of the metal foil are removed at locations corresponding to the plurality of signal transmission lines, and wherein the one or more ground lines are disposed at locations corresponding with the one or more ground lines of the first wire.
22. The cable of claim 21 , wherein the flexible cable portion comprises a coaxial cable.