SEMICONDUCTOR TRANSDUCER DEVICE WITH MULTILAYER DIAPHRAGM AND METHOD OF MANUFACTURING A SEMICONDUCTOR TRANSDUCER DEVICE WITH MULTILAYER DIAPHRAGM

The semiconductor transducer device comprises a diaphragm (10) suspended above a semiconductor body (1). A first layer (9) of the diaphragm (10) comprises a material that is resistant to an etchant comprising fluorine or a fluorine compound and covers a second layer (8) that comprises titanium and/o...

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Bibliographische Detailangaben
Hauptverfasser:	Faes, Alessandro, Pijnenburg, Remco Henricus Wilhelmus, Siegert, Jörg, Besling, Willem Frederik Adrianus
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The semiconductor transducer device comprises a diaphragm (10) suspended above a semiconductor body (1). A first layer (9) of the diaphragm (10) comprises a material that is resistant to an etchant comprising fluorine or a fluorine compound and covers a second layer (8) that comprises titanium and/or TiN. Thus the first layer (9) acts as protection layer and prevents production of residues like titanium fluorides during the etching of a sacrificial layer (5) using HF vapor to release the diaphragm (10).