Patent ID: 6821625
Filing Date: 2004-11-23
Classification: H01L,Y10T

Abstract:
A thermal spreading device disposable between electronic circuitry and a heat sink, the thermal spreading device comprising:a substrate having a first face and a second face, the second face being disposed parallel to the first face, the material of which said substrate is fabricated having anisotropic thermal conductivity with a first thermal conductivity value in a direction parallel to the faces and a second thermal conductivity value in a direction normal to the faces, the second thermal conductivity value being less than the first thermal conductivity value wherein said substrate is fabricated from a material selected from the group consisting of carbon and carbon composite; and plurality of conduits extending through said substrate from the first face thereof to the second face thereof, the material of which each conduit of said plurality of conduits is fabricated having a thermal conductivity value associated therewith, the thermal conductivity value of each conduit being greater than the second thermal conductivity value of said substrate.