Patent ID: 7041526
Filing Date: 2006-05-09
Classification: G01R,H01F

Abstract:
1. A method for manufacturing a magnetic field detecting element having a soft magnetic core formed on a semiconductor substrate, first and second coils arranged on upper and lower surfaces of the soft magnetic core, respectively, the first and second coils each having a plurality of coil lines, the method comprising: forming a first seed film to a predetermined thickness on the semiconductor substrate; removing a portion of the first seed film using a predetermined pattern so that each of the plurality of coil lines constituting the first coil that would be is subsequently formed on a remaining portion of the first seed film is separated from the others; forming a first plating mold having a plurality of grooves corresponding to the predetermined pattern, on an upper portion of the first seed film; forming the plurality of coil lines constituting the first coil by filling the plurality of grooves of the first plating mold with metal; forming the soft magnetic core and the second coil on an upper portion of the semiconductor substrate and on the remaining portion of the seed film where the first coil is formed; and cutting off edges of the semiconductor substrate so that each of the plurality of coil lines separated by the predetermined pattern are insulated from each other.