A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is σ1, the center-to-center spacing of the insulated conductors of the second conductor set is σ2, and σ1/σ2 is greater than 0.7.

A shielded flat cable 1 includes one or more ground wires G1, the ground wires G1 being arrayed parallel to each other, one or more signal wires S1 and S2 arrayed parallel to the one or more ground wires G1, insulating layers 11 and 12 covering the one or more ground wires G1 and the signal wires S1 and S2, and shield layers 21 and 22 provided on outer surfaces of the insulating layers 11 and 12. In a cross-section of the one or more ground wires, the insulating layers 11 and 12 include openings 13 and 14 of which bottoms are respectively an upper surface and a lower surface of one ground wire G1, and the one ground wire G1 and the shield layers 21 and 22 are electrically coupled at the openings 13 and 14, and the signal wires S1 and S2 are surrounded by the one or more ground wires G1 and the shield layers 21 and 22.

A connecting object is used for connection to a device. The connecting object has a sheet-like shape. The device has at least two ground pins and at least one signal pin. The at least one signal pin is arranged between two of the ground pins in a pitch direction. The connecting object has a wiring layer, a shield layer and an insulator. The wiring layer is formed with only a signal line which is configured to be connected with the signal pin. The wiring layer is formed with no ground line which is configured to be connected with the ground pin. The shield layer covers the wiring layer via the insulator which is positioned between the shield layer and the wiring layer.

A twin axial cable includes a pair of wires each with a core conductor; a first dielectric extruded around each of the core conductors, said pair of conductors with the first dielectrics being intimately side by side positioned with each other in a transverse direction; a second dielectric different form the first dielectric and extruded around the first dielectrics; a shielding layer enclosing the second dielectric; and a heat seal PET layer enclosing the shielding layer. A coupling ratio which is calculated by a value of an even mode characteristic impedance subtracted an odd mode characteristic impedance divided by a value of the even mode characteristic impedance pulsed the odd mode characteristic impedance is between 15% to 30%.

Disclosed are a flat cable and a method for manufacturing the same. The flat cable includes a plurality of pairs of differential signal conductors, a grounding conductor, an insulation sheath, a covering layer, and a metal conductive member. The grounding conductor is disposed between each two adjacent ones of the plurality of pairs of differential signal conductors. The insulation sheath wraps outer sides of the plurality of pairs of differential signal conductors and the grounding conductor. The covering layer covers an outer side of the insulation sheath. An opening is disposed in the insulation sheath, the opening communicates with the grounding conductor, and an area of the opening is greater than an area of the grounding conductor. At least one part of the metal conductive member is received in the opening and is in electrical contact with the grounding conductor.

Ribbon cables including a plurality of spaced apart substantially parallel conductors extending along a length of the cable and arranged along a width of the cable, and first and second insulative layers disposed on opposite sides of and substantially coextensive with the plurality of conductors along the length and width of the cable are described. Each insulative layer may be adhered to the conductors and may include alternating substantially parallel thicker and thinner portions extending along the length of the cable. The thicker portions of the first and second insulative layers are substantially aligned in one to one correspondence. Each corresponding thicker portion of the first and second insulative layers have at least one conductor in the plurality of conductors disposed therebetween. The thicker portions may have an effective dielectric constant less than 2.

A flexible flat cable capable of increasing space utilization in electronic devices by including a folding portion and by forming an independent conducting wire portion. The flexible flat cable includes a base film provided to extend in a first direction and configured to be foldable, a first conducting wire provided to extend in the first direction on the base film and including a first terminal provided at one end thereof and a first folding area terminal provided at the other end thereof, and a second conducting wire disposed next to the first conducting wire in the first direction, and including a second terminal provided at one end thereof and a second folding area terminal provided at the other end thereof, the second folding area terminal arranged spaced apart from the first folding area terminal of the first conducting wire in the first direction.

Provided are flexible hybrid interconnect circuits and methods of forming thereof. A flexible hybrid interconnect circuit comprises multiple conductive layers, stacked and spaced apart along the thickness of the circuit. Each conductive layer comprises one or more conductive elements, one of which is operable as a high frequency (HF) signal line. Other conductive elements, in the same and other conductive layers, form an electromagnetic shield around the HF signal line. Some conductive elements in the same circuit are used for electrical power transmission. All conductive elements are supported by one or more inner dielectric layers and enclosed by outer dielectric layers. The overall stack is thin and flexible and may be conformally attached to a non-planar surface. Each conductive layer may be formed by patterning the same metallic sheet. Multiple pattern sheets are laminated together with inner and outer dielectric layers to form a flexible hybrid interconnect circuit.

The present invention provides an FFC using a PCT film as an insulating coating layer. The FFC comprises a lower insulating coating layer made of the PCT film; a lower adhesive layer made of polyester formed through a lower primer layer made of polyurethane material on the upper surface of the lower insulating coating layer; an upper insulating coating layer made of the PCT film; an upper adhesive layer made of polyester formed through an upper primer layer made of polyurethane material on a lower surface of the upper insulating coating layer; and a conductor wire layer interposed between the lower adhesive layer and the upper adhesive layer.