Patent ID: 11946822
Assignee: SCIOSENSE B.V.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 10:
11. A semiconductor transducer device comprising:
a semiconductor body; and
a diaphragm having a first layer and a second layer,
wherein a main extension plane of the diaphragm is arranged parallel to a surface of the semiconductor body,
wherein the diaphragm is suspended at a distance from the semiconductor body in a direction perpendicular to the main extension plane of the diaphragm,
wherein the second layer comprises titanium and/or titanium nitride,
wherein the first layer comprises a material that is resistant to an etchant comprising a fluorine compound,
wherein the second layer is arranged between the semiconductor body and the first layer,
wherein the diaphragm further comprises a third layer and a fourth layer,
wherein the third layer is in contact with the second layer,
wherein the third layer is arranged at a smaller distance from the semiconductor body than the second layer,
wherein the fourth layer comprises titanium and/or titanium nitride, and
wherein the fourth layer is arranged at a smaller distance from the semiconductor body than the third layer.