Pressure sensor structure
First Claim
1. A microelectromechanical pressure sensor structure that comprises a planar base and a side wall layer and a diaphragm plate, whereinthe side wall layer forms side walls that extend as a circumference away from the planar base to a top surface of the side wall layer;
- the planar base, the side wall layer and the diaphragm plate are attached to each other to form a hermetically closed gap in a reference pressure;
the top surface of the side wall layer comprises at least one isolation area that is not covered by the diaphragm plate.
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Accused Products
Abstract
A microelectromechanical pressure sensor structure that comprises a planar base and side walls and a diaphragm plate. The side walls extend circumferentially away from the planar base to a top surface of the side walls. The planar base, the side walls and the diaphragm plate are attached to each other to form a hermetically closed gap in a reference pressure, and a top edge of the inner surfaces of the side walls forms a periphery of a diaphragm. The diaphragm plate comprises one or more planar material layers of which a first planar material layer spans over the periphery of the diaphragm. The top surface of the side walls comprises at least one isolation area that is not covered by the first planar material layer.
18 Citations
29 Claims
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1. A microelectromechanical pressure sensor structure that comprises a planar base and a side wall layer and a diaphragm plate, wherein
the side wall layer forms side walls that extend as a circumference away from the planar base to a top surface of the side wall layer; -
the planar base, the side wall layer and the diaphragm plate are attached to each other to form a hermetically closed gap in a reference pressure; the top surface of the side wall layer comprises at least one isolation area that is not covered by the diaphragm plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification