Patent ID: 6707298
Filing Date: 2004-03-16
Classification: B82Y,G01R

Abstract:
A magnetic sensor comprising:a thin-film-like magnetoresistive effect element; and a coil formed in a plane parallel to a planar film surface of the magnetoresistive effect element, the coil generating magnetic fields applied to the magnetoresistive effect element: wherein the coil comprises a first conductor forming a spiral in a plan view, and a second conductor forming a spiral in the plan view; wherein the magnetoresistive effect element is disposed between a spiral center of the first conductor and a spiral center of the second conductor in the plan view; and wherein the first conductor and the second conductor are connected such that electric currents in substantially the same direction pass through a part of the first conductor at a portion overlapping the magnetoresistive effect element in a plan view and through a part of the second conductor at a portion overlapping the magnetoresistive effect element in the plan view.