Patent ID: 6517662
Filing Date: 2003-02-11
Classification: H01L

Abstract:
A process of fabricating a semiconductor chip carrier assembly comprising the steps of:introducing a flexible substrate into a vacuum fixture, said vacuum fixture having openings to accommodate electrically conductive protrusions on a the bottom surface of said flexible substrate; applying a vacuum to hold said flexible substrate flat on said fixture; placing an adhesive composition, said adhesive composition comprising a microporous film substrate and a curable adhesive, wherein said microporous film is ladened with said curable adhesive, over said flexible substrate; disposing a stiffener over said adhesive composition and placing a compression plate thereover; and curing said curable adhesive by subjecting said adhesive composition to a temperature in a range of between about 135Â° C. and about 190Â° C. and a pressure in a range of between about 5 minutes and about 1 hour.