US 12,241,762 B2
Magnetic sensor
Yuki Ohyama, Fukui (JP); Kazuhiro Kanda, Fukui (JP); Masahiko Ohbayashi, Osaka (JP); Hideyuki Tanigawa, Osaka (JP); and Masataka Tagawa, Osaka (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Appl. No. 18/252,306
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Nov. 16, 2021, PCT No. PCT/JP2021/042085
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/107765, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/117,154, filed on Nov. 23, 2020.
Claims priority of application No. 2021-022907 (JP), filed on Feb. 16, 2021; and application No. 2021-064976 (JP), filed on Apr. 6, 2021.
Prior Publication US 2024/0011799 A1, Jan. 11, 2024
Int. Cl. G01D 5/16 (2006.01)
CPC G01D 5/16 (2013.01) 10 Claims
OG exemplary drawing
 
1. A magnetic sensor configured to detect a position of a detection target based on a change in magnetic field strength to be caused by relative movement of the detection target in a first direction, the magnetic sensor comprising:
a plurality of magnetoresistance pattern portions arranged to form a bridge circuit;
a first wiring pattern portion connected to a power supply terminal; and
a second wiring pattern portion connected to a ground terminal,
each of the first wiring pattern portion and the second wiring pattern portion being made of the same material as the plurality of magnetoresistance pattern portions,
the plurality of magnetoresistance pattern portions being arranged in the first direction,
each of the plurality of magnetoresistance pattern portions including a first resistance portion and a second resistance portion that are connected together in series,
each of a plurality of the first resistance portions and a plurality of the second resistance portions included in the plurality of magnetoresistance pattern portions being formed in a second direction perpendicular to the first direction,
each of the first wiring pattern portion and the second wiring pattern portion including a first wiring portion and a second wiring portion arranged on both sides of the plurality of magnetoresistance pattern portions in the second direction,
two resistance portions included in the plurality of the first resistance portions and the plurality of the second resistance portions being located at both ends in the first direction,
one of the two resistance portions connecting together the first wiring portion and the second wiring portion of the first wiring pattern portion,
a remaining one of the two resistance portions connecting together the first wiring portion and the second wiring portion of the second wiring pattern portion.