Patent ID: 8867219
Filing Date: 2014-10-21
Classification: H01L,H05K,Y10T

Abstract:
1. A method of making an electronic device comprising: forming an interconnect layer stack on a sacrificial substrate and comprising a plurality of patterned electrical conductor layers, and a dielectric layer between adjacent patterned electrical conductor layers, with an uppermost patterned electrical conductor layer including at least one pad; forming a liquid crystal polymer (LCP) substrate and comprising at least one electrical conductor via; aligning the LCP substrate to the interconnect layer stack on a side thereof opposite the sacrificial substrate, with the at least one electrical conductor via being aligned with the at least one pad of the uppermost patterned electrical conductor layer; laminating the LCP substrate to the interconnect layer stack so as to form a fused seem directly between the between the interconnect layer stack and the LCP substrate, with the at least one electrical conductor via being intermetallically bonded to the uppermost patterned electrical conductor layer; removing the sacrificial substrate to expose a lowermost patterned electrical conductor layer; and electrically coupling at least one first device to the lowermost patterned electrical conductor layer.