Patent ID: 11912565
Assignee: ROBERT BOSCH GMBH
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A micromechanical sensor unit, comprising:
a substrate, and an edge layer which is situated on the substrate and laterally frames an inner area above the substrate;
at least one diaphragm which spans the inner area and forms a covered cavity above the substrate; and
a plurality of support points, situated between the substrate and the diaphragm inside the cavity, the diaphragm being attached to the edge layer and to the plurality of support points, the support points separating the diaphragm into plurality of measuring areas that are movable through a pressure and plurality of reference areas that are not movable through the pressure;
wherein the substrate and the diaphragm, inside the cavity, include electrodes which include an upper electrode and a lower electrode, the electrodes being in the measuring area and the reference area,
wherein the diaphragm includes multiple rectangular, or polygonal, or round measuring areas,
wherein the diaphragm includes an identical number of measuring areas and reference areas, which are interconnected with one another in the form of a Wheatstone bridge,
wherein one of the plurality of support points separates one of the measuring areas from an adjacent one of the measuring areas, and at least another of the plurality of support points separates one of the measuring areas from one of the reference areas and extend along parallel lines between two opposing side walls of the edge layer.