Hall element for mitigating current concentration and fabrication method thereof

A fabrication method of a Hall element, comprising:

• providing a substrate;
• forming a magnetosensitive portion on the substrate;
• forming an insulating film on the magnetosensitive portion;
• forming, on the insulating film, an electrode portion which extends from a peripheral region of the magnetosensitive portion toward a central region of the magnetosensitive portion;
• and
• forming a contact which penetrates the insulating film, and electrically connects the electrode portion to the magnetosensitive portion, wherein
• when observing a cross section passing through a center of the magnetosensitive portion in plan view and a portion at which the contact is in contact with the magnetosensitive portion, at least a part of the contact extends toward the central region directly below a lower surface of a part of the insulating film in the cross section, and the electrode portion extends further toward the central region than the contact.