Patent ID: 6268070
Filing Date: 2001-07-31
Classification: H01L,H05K,Y10T

Abstract:
A laminate for use as a surface laminate in a multi-layer printed circuit board, said laminate comprising:a film substrate formed of a first polymeric material;at least one layer of a flash metal applied to a first side of said film substrate;at least one layer of copper on said layer of flash metal;an adhesive film layer formed of a material selected from the group consisting of acrylics, epoxies, nitrile rubbers, phenolics, polyamides, polyarylene ethers, polybenzimidazoles, polyesters, polyimides, polyphenylquinoxalines, polyvinyl acetals, polyurethanes, silicones, vinyl-phenolics, urea-formaldehyde and combinations thereof, said adhesive layer having a uniform thickness between 12.5 .mu.m and 125 .mu.m and a first surface attached to a second side of said film substrate; anda protective release layer on said second surface of said adhesive film layer.