Patent ID: 11953562
Assignee: NIDEC READ CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The method for manufacturing the MI sensor according to claim 6, wherein
in the exposure step, a first end that surrounds the resist layer is formed on a side closer to an outer end than the first groove strip is, on the outer peripheral surface of the resist layer; a second end that surrounds the resist layer is formed on a side closer to an outer end than the third groove strip is, on the outer peripheral surface of the resist layer; and the first end, the first groove strip, the first gap, the second groove strip, the second gap, the third groove strip, and the second end are formed separately from each other, and
in the etching step, the conductive layers remaining at both ends of the first coil, the second coil, and the third coil are formed as annular coil electrodes each of which surrounds the insulator layer.