Patent ID: 6271599
Filing Date: 2001-08-07
Classification: H01L

Abstract:
A wire interconnect structure for electrically and mechanically connecting an integrated circuit chip to a substrate, said wire interconnect structure comprising:an electrically conductive post having:an elongated body having a first end and a second end, with a length between the first end and the second end, and the length being greater than the diameter of the elongated body;a bottom at said first end of said body, said bottom mechanically and electrically connected to said integrated circuit chip; anda top at said second end of said body of the same material as and formed from said body and having a spherical shape, and adapted to electrically and mechanically connect to the substrate; andan insulator layer disposed on said integrated circuit chip surrounding said post and from which said top of said post projects and of a flexible material that permits said post to flex to accommodate a thermal mismatch between said integrated circuit chip and said substrate.