Title:
ANISOTROPIC MAGNETORESISTANCE (AMR) SENSOR NOT REQUIRING SET/RESET DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/173992
Kind Code:
A1
Abstract:
An anisotropic magnetoresistance (AMR) sensor (100) not requiring a set/reset device comprises a substrate (140), an exchange bias layer (130), an AMR layer (110), and barber-pole electrodes (122). The exchange bias layer (130) is deposited on the substrate (140), and the AMR layer (110) is deposited on the exchange bias layer (130). The AMR layer (110) is composed of multiple groups of AMR strips, and each group of AMR strips is composed of multiple AMR strips. The barber-pole electrodes (122) are arranged on each AMR strip in a regular pattern. The AMR sensor (100) of the present invention achieves coupling by using the exchange bias layer (130), without requiring a reset/set coil, thereby greatly reducing chip power consumption, simplifying the manufacturing process, increasing product yield, and reducing production costs.
Inventors:
XUE SONGSHENG (CN)
LEI XIAOFENG (CN)
SHEN WEIFENG (CN)
FENG LIXIAN (CN)
LEI XIAOFENG (CN)
SHEN WEIFENG (CN)
FENG LIXIAN (CN)
Application Number:
PCT/CN2017/079493
Publication Date:
October 12, 2017
Filing Date:
April 05, 2017
Export Citation:
Assignee:
MULTIDIMENSION TECHNOLOGY CO LTD (CN)
International Classes:
G01R33/09
Foreign References:
| CN205809273U | 2016-12-14 | |||
| CN205861754U | 2017-01-04 | |||
| CN105261699A | 2016-01-20 | |||
| CN104900801A | 2015-09-09 | |||
| CN104567950A | 2015-04-29 | |||
| CN202494772U | 2012-10-17 | |||
| US8885302B1 | 2014-11-11 |
Other References:
See also references of EP 3441779A4
Attorney, Agent or Firm:
SCIHEAD PATENT AGENT CO., LTD. (CN)
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