The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2000
Filed:
Feb. 06, 1998
Applicant:
Inventors:
Varmazis D Costas, Chelmsford, MA (US);
Anthony Kaleta, Lowell, MA (US);
Assignee:
The Whitaker Corporation, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257275 ; 257640 ; 257778 ;
Abstract
The present invention is drawn to a 2-layer hermetic coating for on wafer encapsulation of GaAs monolithic microwave integrated circuits and the flip-chip mounting thereof. The present invention utilizes the properties of benzocyclobutene (BCB) for use in high frequency microwave applications to capacitively decoupled the MMIC from the carrier substrate during the flip-chip mounting process. The present invention has the advantage of improved performance and reliable flip-chip mounting by the reduction in stress between the carrier substrate and the MMIC that often occurs in flip-chip mounting of the MMIC.