US 12,455,302 B2
Magnetic field detection apparatus and current detection apparatus
Norikazu Ota, Tokyo (JP); Kenzo Makino, Tokyo (JP); and Hiraku Hirabayashi, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Dec. 8, 2022, as Appl. No. 18/077,285.
Application 18/077,285 is a continuation of application No. 17/080,958, filed on Oct. 27, 2020, granted, now 11,549,970.
Claims priority of application No. 2019-224095 (JP), filed on Dec. 11, 2019; and application No. 2020-030861 (JP), filed on Feb. 26, 2020.
Prior Publication US 2023/0099490 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01R 33/09 (2006.01); G01R 15/20 (2006.01)
CPC G01R 15/205 (2013.01) [G01R 33/09 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A magnetic field detection apparatus comprising:
a magnetoresistive effect element including a magnetoresistive effect film that extends in a first axis direction; and
a helical coil including a parallel connection that includes a first part and a second part each extending in a second axis direction inclined with respect to the first axis direction, the first part and the second part being adjacent to each other in a third axis direction and coupled to each other in parallel, the third axis direction being different from both of the first axis direction and the second axis direction, the helical coil being wound around the magnetoresistive effect element while extending along the third axis direction,
the magnetoresistive effect film overlapping both of the first part and the second part in a fourth axis direction orthogonal to both of the second axis direction and the third axis direction.