Process for producing connecting conductors

A method for manufacturing shielded interconnecting conductors (1) from semifinished products (H1, H2, H3) comprising the steps of:

• providing a first semifinished product (H1) having at least one layer of conductors, said at least one layer of conductors including signal conductors (10, 10′) and shielding conductors (12, 12′, 13, 13′);
• providing at least one second semifinished product (H2, H3), said at least one second semifinished product having shielding material (23, 33);
• joining with a dielectric layer (15, 25, 35) the second semifinished product to the at least one layer of conductors (10, 10′, 12, 12′, 13, 13′);
• photochemically structuring the shielding material (23, 33) to provide openings (22, 22′, 32, 32′) therein, said openings following the shielding conductors (12, 12′, 13, 13′) and extending to the dielectric (15, 25, 35);
• selectively removing portions of the dielectric (15, 25, 35) at locations of the openings (22, 22′, 32) in the shielding material (22, 33) until the openings extend to the shielding conductor (12, 12′, 13, 13′);
• and,
• forming electrical connections between the shielding material (23, 33) and the shielding conductors (12, 12′, 13, 13′) through the openings in the shielding material so that said signal conductors (10, 10′) are insulated by dielectric (15, 25, 35) and are shielded by the shielding conductors (12, 12′, 13, 13′), which are electrically connected to the shielding material.