Magnetic detection device having bridge circuit provided with resistance adjustment portion and method of manufacturing the same
US7592805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | May 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/142
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a magnetic detection device using a magnetic resistance element, the resistance of a layer having a multi-layer structure can be easily adjusted without causing damages to the layer. A magneto-resistance layer is connected in series to a reference resistance layer, and a magneto-resistance layer is connected in series to a reference resistance layer on a substrate. A voltage is applied between a power supply layer and a grounding layer. A first output conductive layer and the reference resistance layer extend in parallel to each other so that they are partially electrically connected to each other via a connection layer. A second output conductive layer and the reference resistance layer extend in parallel to each other so that they are partially electrically connected to each other via a connection layer. Accordingly, it is possible to adjust the resistance of the reference resistance layers by selecting the respective positions of the connection layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.