Flexible cable

Abstract

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.

What is claimed is: 
     
       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  surrounded 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 a first metal foil layer and the first metal foil insulation layer. 
 
     
     
       3. The flexible cable of  claim 2 , wherein the first metal foil clad laminate comprises:
 awherein the first metal foil layer comprisingcomprises the one or more signal transmission linesand 
 the first metal foil insulation layer. 
 
     
     
       4. The flexible cable of claim  3   2 , 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   2 , 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 signal transmission lines and the one or more ground lines a second metal foil; and 
 a first second 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:
 wherein a second metal foil insulation layer is disposed in a direction facing the first wire; and,  
 awherein the second metal foil insulation layer  comprising comprises 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; and 
 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 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; 
 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; and 
 a fifth bonding layer configured to laminate the fourth metal foil clad laminate and the sixth metal foil clad laminate; 
 a sixth bonding layer configured to laminate the eighth metal foil clad laminate and the fourth metal foil clad laminate; and 
 a connector 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:
 a second metal foil clad laminate comprising at least the one or more fill-cut areas corresponding to the one or more signal transmission lines and  at least 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 at least the 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. 
     
     
       23. 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 metal foil layer including a first signal transmission line, a second signal transmission line, a first ground line, a second ground line, and a third ground line disposed on a first metal foil insulation layer, wherein the first metal foil layer is surrounded by the first metal foil insulation layer and a first insulation layer; and   a second metal foil layer surrounded by a second metal foil insulation layer and a second insulation layer, the second metal foil layer including at least one or more ground lines, and one or more fill-cut areas, in which portions of metal foil are removed at locations corresponding to the first signal transmission line and the second signal transmission line,   wherein the first ground line is located between the second ground line and the third ground line such that the second ground line and the 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,   wherein the first signal transmission line is 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   wherein the 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,   wherein an air gap is defined between the first metal foil layer and the second metal foil layer,   wherein the one or more fill-cut areas are separated from the first and second signal transmission lines by at least the air gap,   wherein the first metal foil insulation layer is disposed between the first and second signal transmission lines and the air gap.   
     
     
       24. The flexible cable of  claim 23 , wherein the at least one or more ground lines includes a fourth ground line, a fifth ground line, and a sixth ground line. 
     
     
       25. The flexible cable of  claim 24 , wherein the fourth ground line is located at a center of the second metal foil layer, and the fifth ground line and the sixth ground line are disposed on opposite sides of the fourth ground line to be spaced apart from each other by a distance corresponding to the one or more fill-cut areas. 
     
     
       26. The flexible cable of  claim 24 , wherein the one or more fill-cut areas include a first fill-cut area and a second fill-cut area. 
     
     
       27. The flexible cable of  claim 26 , wherein the first fill-cut area is disposed between the fourth ground line and the fifth ground line. 
     
     
       28. The flexible cable of  claim 26 , wherein the second fill-cut area is disposed between the fourth ground line and the sixth ground line. 
     
     
       29. 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 metal foil layer including a first signal transmission line, a first ground line, and a second ground line disposed on a first metal foil insulation layer, the first metal foil layer is surrounded by the first metal foil insulation layer and a first insulation layer; and   a second metal foil layer surrounded by a second metal foil insulation layer and a second insulation layer, the second metal foil layer including at least one or more ground lines and a fill-cut area, in which portions of metal foil are removed at a location corresponding to the first signal transmission line,   wherein the second ground line is spaced apart from the first ground line by a distance corresponding to the fill-cut area,   wherein the first signal transmission line is 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   wherein an air gap is defined between the first metal foil layer and the second metal foil layer,   wherein the fill-cut area is separated from the first signal transmission line by at least the air gap,   wherein the first metal foil insulation layer is disposed between the first signal transmission line and the air gap.   
     
     
       30. The flexible cable of  claim 29 , wherein the first metal foil layer includes a second signal transmission line, and a third ground line. 
     
     
       31. The flexible cable of  claim 30 , wherein the third ground line is disposed to be spaced apart from the first ground line by the distance corresponding to the fill-cut area. 
     
     
       32. The flexible cable of  claim 30 , wherein the 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. 
     
     
       33. The flexible cable of  claim 29 , wherein the at least one or more ground lines includes a fourth ground line, and a fifth ground line. 
     
     
       34. The flexible cable of  claim 33 , wherein the fourth ground line is located at a center of the second metal foil layer, and the fifth ground line is disposed to be spaced apart from the fourth ground line by the distance corresponding to the fill-cut area. 
     
     
       35. The flexible cable of  claim 33 , wherein the fill-cut area is disposed between the fourth ground line and the fifth ground line.