Multiaxial micromechanical acceleration sensor

A micromechanical acceleration sensor includes a substrate, an elastic diaphragm which extends parallel to the substrate plane and which is partially connected to the substrate, and which has a surface region which may be deflected perpendicular to the substrate plane, and a seismic mass whose cente...

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Bibliographische Detailangaben
Hauptverfasser: CLASSEN JOHANNES, REICHENBACH RALF, FRANKE AXEL, SCHUBERT DIETRICH, KEHR KERSTEN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A micromechanical acceleration sensor includes a substrate, an elastic diaphragm which extends parallel to the substrate plane and which is partially connected to the substrate, and which has a surface region which may be deflected perpendicular to the substrate plane, and a seismic mass whose center of gravity is situated outside the plane of the elastic diaphragm. The seismic mass extends at a distance over substrate regions which are situated outside the region of the elastic diaphragm and which include a system composed of multiple electrodes, each of which together with oppositely situated regions of the seismic mass forms a capacitor in a circuit. In its central region the seismic mass is attached to the elastic diaphragm in the surface region of the elastic diaphragm which may be deflected perpendicular to the substrate plane.