Patent ID: 6326682
Filing Date: 2001-12-04
Classification: B81B,B81C

Abstract:
A hermetically sealed semiconductor transducer, comprising:a transducer wafer having at least one semiconductor element disposed on a top surface thereof;at least one electrical contact, coupled to said semiconductor element, disposed on said top surface of said transducer wafer and extending from said semiconductor element to an outer portion of said top surface;a cover member dimensioned to surround said semiconductor element;a peripheral glass frit bond between said transducer wafer and said cover member and between at least a portion of said electrical contact and said cover member;said cover member having an aperture in a top portion thereof, said aperture positioned above a region bounded by said peripheral glass frit bond, said aperture employed to prevent air gap formation in said peripheral glass frit bond;a sealing member for hermetically sealing said aperture;whereby a vacuum is maintained between said semiconductor element and said cover member, said semiconductor element thereby being hermetically sealed from the external environment, while at least a portion of said electrical contact remains exposed to enable external wire attachment thereto.