Method for determining the layer thickness of a connecting layer between two packaging layers

The invention proposes a laser ultrasound method for a simple, secure, fast and reliable determination of the layer thickness a the connecting layer between two layers of a package, in which method the transit time of the ultrasound wave through the first and second packaging layers (2, 3) is determ...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Kornfeld, Martin, Wegenberger, Alfred, Reitinger, Bernhard, Grunsteidl, Clemens, Zamiri, Saeid, Roither, Jurgen
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The invention proposes a laser ultrasound method for a simple, secure, fast and reliable determination of the layer thickness a the connecting layer between two layers of a package, in which method the transit time of the ultrasound wave through the first and second packaging layers (2, 3) is determined in advance and a maximum (M