Patent ID: 6106735
Filing Date: 2000-08-22
Classification: B29C,G01L,H01L

Abstract:
A method for producing sensors, comprising the steps of:(a) situating at least two sensor elements on a substrate wafer, the sensor elements including electric contacts;(b) introducing contact holes into a cap wafer;(c) applying a bonding medium on the cap wafer, the bonding medium including bonding strips;(d) applying the cap wafer to the substrate wafer, wherein only one of the bonding strips is positioned between two elements of the at least two sensor elements and is positioned around the contact holes;(e) hermetically sealing caverns using the bonding medium, the at least two sensor elements being arranged in the caverns;(f) after performing steps (c) through (e), sawing through the cap wafer and the bonding strips at predetermined locations, the predetermined locations subsequently forming lateral external surfaces of the sensors;(g) after step (f), testing the caverns to determine if the caverns are impervious, the caverns being tested via at least one of the contact holes; and(h) after step (g), sawing through the substrate wafer to completely separate the sensors.