Patent ID: 7935571
Filing Date: 2011-05-03
Classification: H01L

Abstract:
1. An electronic assembly formed by a process, comprising: providing an initial substrate having an active device region proximate a first surface thereof; forming via cavities extending part-way through the initial substrate from the first surface; filling the via cavities with a conductive material at least partly coupled to some part of the active device region; mounting the initial substrate on a temporary support structure with the first surface facing the temporary support structure and a rear face of the initial substrate exposed; removing material from the rear face until a new surface of the initial substrate is exposed, resulting in a thinned substrate, wherein interior ends of the via cavities filled with the conductive material are exposed at the new surface; providing a further interconnect region on the new surface making contact to at least some of the interior ends of the via cavities filled with the conductive material; and removing the temporary support structure.