公开(公告)号：US20210063509A1

公开(公告)日：2021-03-04

申请号：US16730784

申请日：2019-12-30

Applicant: Western Digital Technologies, Inc.

Inventor： Yung-Hung WANG ,  Daniele MAURI ,  Ming MAO ,  Chen-jung CHIEN ,  Yuankai ZHENG ,  Chih-Ching HU ,  Carlos CORONA ,  Matthew STEVENSON ,  Ming JIANG

IPC: G01R33/09 ,  G01R17/10 ,  H01L43/08

Abstract: The present disclosure generally relates to a Wheatstone bridge that has four resistors. Each resistor includes a plurality of TMR structures. Two resistors have identical TMR structures. The remaining two resistors also have identical TMR structures, though the TMR structures are different from the other two resistors. Additionally, the two resistors that have identical TMR structures each have an additional non-TMR resistor as compared to the remaining two resistors that have identical TMR structures. Therefore, the working bias field for the Wheatstone bridge is non-zero.