A wiring member includes: at least one wire-like transmission member; a first sheet to which a first section located along a longitudinal direction in the wire-like transmission member is fixed; and a second sheet to which a second section located along a longitudinal direction in the wire-like transmission member is fixed, wherein the first sheet and the second sheet are separated, and at least one bending trace is formed in an intermediate section between the first section and the second section in the wire-like transmission member.

Provided are a flexible flat cable and a method of producing the same. The flexible flat cable includes a plate-shaped first insulation portion comprising an insulating material; a first ground, a second ground, and a third ground disposed at predetermined intervals on the first insulation portion; at least one first signal transmission line positioned between the first ground and the second ground and disposed on the first insulation portion; at least one second signal transmission line positioned between the second ground and the third ground and disposed on the first insulation portion; a first second insulation portion disposed on at least a portion of the first ground and at least a portion of the at least one first signal transmission line and the second ground; a second insulation portion disposed on at least a portion of the second ground and at least a portion of the at least one second signal transmission line, and the third ground; a conductive adhesive layer configured to enclose the first insulation portion, the first second insulation portion, and the second insulation portion; and a shielding portion comprising a shielding material adhered to an outside of the conductive adhesive layer. Therefore, by improving shielding efficiency of a plurality of signal transmission lines, while having good electromagnetic interference and crosstalk characteristics, a plurality of signals can be simultaneously transmitted.

Provided are a flexible flat cable and a method of producing the same. The flexible flat cable includes a plate-shaped first insulation portion comprising an insulating material; a first ground, a second ground, and a third ground disposed at predetermined intervals on the first insulation portion; at least one first signal transmission line positioned between the first ground and the second ground and disposed on the first insulation portion; at least one second signal transmission line positioned between the second ground and the third ground and disposed on the first insulation portion; a first second insulation portion disposed on at least a portion of the first ground and at least a portion of the at least one first signal transmission line and the second ground; a second insulation portion disposed on at least a portion of the second ground and at least a portion of the at least one second signal transmission line, and the third ground; a conductive adhesive layer configured to enclose the first insulation portion, the first second insulation portion, and the second insulation portion; and a shielding portion comprising a shielding material adhered to an outside of the conductive adhesive layer. Therefore, by improving shielding efficiency of a plurality of signal transmission lines, while having good electromagnetic interference and crosstalk characteristics, a plurality of signals can be simultaneously transmitted.

A cable with a non-circular ground wire is provided, including two wires, two ground wires, and an insulating tape; wherein the inner sides of the wires are in contact with each other; the ground wires are respectively arranged on two opposite sides of the wires; each ground wire at least includes a first side surface, a second side surface, and a third side surface; the first and second side surfaces respectively contact the outer surfaces of the two wires, and the shapes of the first side surface and the second side surface respectively correspond to the shapes of the outer surfaces of the two wires; the insulating tape covers the outer surfaces of the wires and the third side surfaces of the ground wires. Thereby, the mechanical properties of the cable of the present invention, such as small impedance variation of high-frequency signal transmission, transmission stability, structural flexibility and bending, can be significantly improved.

Electrical cables and optical waveguides are disclosed as including an electrically insulative foam. The electrically insulative foam can coat at least one electrical conductor of the electrical cable. The electrically insulative foam can coat the optical fiber of the waveguide. The electrically insulative foam can also define a waveguide.

The subject matter of the present disclosure may be embodied in devices, such as flexible wiring, that include: an elongated flexible substrate; multiple electrically conductive traces arranged in an array on a first side of the elongated flexible substrate; and an electromagnetic shielding layer on a second side of the elongated flexible substrate, the second side being opposite the first side, in which the elongated flexible substrate includes a fold region between a first electronically conductive trace and a second electrically conductive trace such that the electromagnetic shielding layer provides electromagnetic shielding between the first electronically conductive trace and the second electrically conductive trace.

Embodiments of the present disclosure are directed to a flexible flat cable for improving high-frequency transmission, which has a multi-layer structure. The flexible flat cable includes an upper plastic film layer, an upper adhesive film layer, a plurality of wires arranged in parallel, a lower adhesive film layer, and a lower plastic film layer in turn from top to bottom. At least two adjacent wires have a dielectric space, which is capable of reducing conductor loss, thereby reducing the attenuation of the signal and improving the signal integrity.

An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm.sup.2 or more and 3.0 mm.sup.2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.

A wiring member includes a first wire-like transmission member and a second wire-like transmission member arranged in parallel to each other and a sheet to which the first wire-like transmission member and the second wire-like transmission member are fixed. At least one of the first wire-like transmission member or the second wire-like transmission member includes the plurality of first wire-like transmission members or the plurality of second wire-like transmission members. The sheet includes a first portion to which the first wire-like transmission member is fixed and a second portion to which the second wire-like transmission member is fixed. The first portion is folded back to the second portion, and an edge portion of the first portion and an edge portion of the second portion are fixed to each other at a side opposite to a folded portion where the sheet is folded back.

A wiring member includes a first wire-like transmission member and a second wire-like transmission member arranged in parallel to each other and a sheet to which the first wire-like transmission member and the second wire-like transmission member are fixed. At least one of the first wire-like transmission member or the second wire-like transmission member includes the plurality of first wire-like transmission members or the plurality of second wire-like transmission members. The sheet includes a first portion to which the first wire-like transmission member is fixed and a second portion to which the second wire-like transmission member is fixed. The first portion is folded back to the second portion, and an edge portion of the first portion and an edge portion of the second portion are fixed to each other at a side opposite to a folded portion where the sheet is folded back.