Patent ID: 7534660
Filing Date: 2009-05-19
Classification: H01L,H05K

Abstract:
1. A method of fabricating an interposer substrate for attaching to an active surface of a semiconductor die having a plurality of conductive bumps protruding transversely therefrom, the method comprising: providing a substrate having a first surface and a second surface, the substrate including a dielectric layer and a plurality of conductive elements on the dielectric layer adjacent the second surface; forming a plurality of recesses in the first surface of the substrate and through the dielectric layer to a depth through the dielectric layer, each of the plurality of recesses exposing at least a portion of a contiguous conductive element adjacent the second surface and of a size and configuration to receive the plurality of conductive bumps of the semiconductor die so that the plurality of conductive bumps is substantially received within the plurality of recesses; and forming at least one opening in the second surface of the substrate in communication with at least one recess of the plurality of recesses.