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Dye Formulation For Detecting Microcracks In Semiconductor Laminated Films

IP.com Disclosure Number: IPCOM000067247D
Original Publication Date: 1979-Jul-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Brown, LP Hammond, B Pugacz-Muraszkiewicz, I [+details]

Abstract

It has been found that failure analysis of semiconductor products to determine and detect moisture ingress paths was readily accomplished by a highly penetrant dye. The dye must be chemically inert, highly soluble in water and/or alcohols and with a very low surface tension for capillary penetration of microcracks so that the dye will delineate the moisture penetration path and other defects in the surface. Such a dye can be formulated as follows: 20 parts of a synthetic water-soluble analine dye are mixed with 40 parts of isopropanol alcohol and 40 parts of D.I. water.