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

Claim 7:
8. A method for manufacturing a micromechanical sensor unit, the method comprising
providing a substrate including an edge layer, which is situated on the substrate and which laterally frames an inner area above the substrate;
situating plurality of support points on the substrate in the inner area, which define plurality of measuring areas and plurality of reference areas above the substrate, the support points separating the measuring and reference areas from one another; and
situating a diaphragm at the edge layer and the support point, so that the diaphragm is attached to the edge layer and/or to the support point and spans the inner area, a covered cavity being formed in the inner area between the diaphragm and the substrate, and, as a result of the support point, the diaphragm is separated into at least one measuring area that is movable through a pressure force action and at least one reference area that is not movable through the pressure;
wherein the substrate and the diaphragm 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.