Patent ID: 7040014

Claim:
A method of producing a helical coil chip comprising the steps of: forming a plurality of wires extending parallel to each other with predetermined intervals on an upper surface and a lower surface of a substrate, wherein said plurality of wires on the upper and lower surfaces of said substrate are arranged to extend in the same direction; cutting said substrate in a direction different from the direction in which said plurality of wires extend in such a way that said plurality of wires are cut to a predetermined length, into a plurality of cut substrates; reconstructing said cut substrates as a collective substrate by means of an adhesive and a plurality of supplemental members, wherein the opposed cut surfaces of said cut substrates are arranged to face upward and downward in said collective substrate; and forming a plurality of additional wires by forming a metal film and processing thus formed metal film by thin film processing means, which have a length equal to the thickness of said substrate plus the thickness of each of said plurality of wires formed on the upper and lower surfaces of said substrate and extend parallel to each other with said predetermined intervals, on the upper and lower surfaces of said collective substrate, wherein each of said plurality of additional wires connects end portions of each of said plurality of wires formed on the upper and lower surfaces of said substrate that pass through the thickness of said collective substrate.