Patent ID: 6294741
Filing Date: 2001-09-25
Classification: H01L,H05K,Y10S,Y10T

Abstract:
An electronics module, incorporating a high density interconnect structure, comprising:a substrate with a plurality of electronic component chips disposed on a surface thereof, each of said plurality of chips having contact pads disposed thereon, and additionally having a first stratum of said high density interconnect structure, said first stratum having a dielectric layer including an uppermost sublayer comprising a thermoset polymer, a lowermost sublayer comprising a thermoplastic polymer, and any sublayers intervening between said uppermost and lowermost sublayers comprising a thermoset polymer, where said dielectric layer of said first stratum supports a conductive segment which is electrically connected to at least some of said contact pads disposed on said plurality of chips; andat least one additional stratum of said high density interconnect structure disposed over said first stratum, each additional stratum having a dielectric layer including an uppermost sublayer comprising a thermoset polymer, a lowermost sublayer comprising benzocyclobutene polymer, and any sublayers intervening between said uppermost and lowermost sublayers of said dielectric layer of said additional stratum comprise a thermoset polymer, where said dielectric layer supports a conductive segment which is electrically connected to at least some of said contact pads disposed on said plurality of chips.