Patent ID: 6258192
Filing Date: 2001-07-10
Classification: B32B,H01L,H05K

Abstract:
A method of fabricating at least one multi-density semiconductor substrate comprising the steps of:(a) forming at least one electrically conductive feature on at least one thick green sheet;(b) providing at least one thin green sheet with at least one via hole;(c) aligning and placing said thin green sheet over said thick green sheet to form a stack, such that at least a portion of said electrically conductive feature is in contact with at least a portion of said via hole;(d) coating surfaces of lamination plates with at least one layer of at least one organic adhesion barrier fluid consisting of a suspension comprising at least one inorganic material;(e) contacting said stack with said lamination plates to tack and/or bond said at least one thin green sheet to said at least one thick green sheet; and(f) sintering said stack, thereby fabricating said multi-density semiconductor substrate.