Patent ID: 7535221

Claim:
A magnetic sensor element of a flux gate type comprising a magnetism sensitive part formed by winding a coil around a magnetic core layer, and magnetism collective part connected to respective ends of the magnetism sensitive part for guiding magnetic fluxes to the magnetism sensitive part; wherein the magnetism collective part are a pair of magnetism collective part each in the shape of a long strip, formed integrally with the magnetic core layer of the magnetism sensitive part, extending in the direction orthogonal to the longitudinal direction of the magnetism sensitive part, respective central parts of the magnetism collective part, in the longitudinal direction thereof, are individually connected with the respective ends of the magnetism sensitive part; and wherein the coil is a thin-film coil comprising a plurality of upper coil thin-films provided on a surface of an upper insulation layer formed on one of principal surfaces of the magnetic core layer, opposite from the magnetic core layer, and a plurality of lower coil thin-films provided on a surface of a lower insulation layer formed on the other of the principal surfaces of the magnetic core layer, opposite from the magnetic core layer, formed by connecting together the respective lower coil thin-films and the adjacent upper coil thin-films, at respective ends thereof, so as to be sequentially continuous with each other.