Patent ID: 8111515
Filing Date: 2012-02-07
Classification: H01L

Abstract:
1. A heat transfer unit for transferring heat from a stacked microfeature device assembly, the heat transfer unit comprising: a first portion having a first base and a first fin integrally connected with the first base, wherein the first base is configured to be mounted to a microfeature die including a first contact pad at a first side of the die, a second contact pad at a second, opposite side of the die, and an interconnect extending through the die to electrically couple the first and second contact pads; and a second portion having a second base configured to be mounted to the microfeature die and a second fin integrally connected with the second base, wherein the second portion is out of mechanical contact with and spaced apart from the first portion by an elongated gap extending along a medial portion of the heat transfer unit and configured to receive at least one of the first or second contact pads of the die.