Patent ID: 9030001
Filing Date: 2015-05-12
Classification: B82Y,H01L,Y10S

Abstract:
1. An assembly, comprising: a first component having a front surface and a plurality of first conductive elements exposed at the front surface; and a second component having a major surface and a plurality of second conductive elements exposed at the major surface, wherein both of the first conductive elements and the second conductive elements include substantially rigid posts having top surfaces projecting a height above the surface of the respective component and bases adjacent the surface of the respective component, such that the top surfaces of the posts are remote from the surface of the respective component, and the posts have edge surfaces extending at substantial angles away from the top surfaces thereof, each base having a first diameter and each top surface having a second diameter, the first diameter being greater than the second diameter, the posts of the first component being first posts and the posts of the second component being second posts, the first posts being joined with the second posts, each first post being electrically interconnected to a respective one of the second posts by a bond region including impurities that show structural evidence of the use of metal nanoparticles having long dimensions smaller than 100 nanometers in the joining process, each bond region penetrating at least partially into the respective first post and the respective second post; and a first underfill dielectric region extending between the first posts and a second underfill dielectric region extending between the second posts, the first and second dielectric regions showing structural evidence of an interface therebetween, the interface being approximately coplanar with a plane defined by the top surfaces of the first posts and the second posts, the first and second components being any of a microelectronic element including active semiconductor devices, a dielectric element, a semiconductor element, or a microelectronic package that includes a microelectronic element and a substrate attached thereto.