Patent ID: 7473995
Filing Date: 2009-01-06
Classification: H01L

Abstract:
1. A device comprising: a heat dissipating member having a surface,; and a B-stage polymer in a phase change thermal interface material attached to the surface of the heat dissipating member, wherein the B-stage polymer in the phase change thermal interface material has the property of being a solid at room temperature, of becoming a liquid at a first elevated temperature above room temperature, and of becoming a cured solid at a second elevated temperature above first temperature, wherein the phase change thermal interface material comprises a polymer matrix and particles of at least one thermally conductive filler dispersed throughout the polymer matrix, wherein the particles of the at least one thermally conductive filler are fusible particles, and wherein the particles of the at least one thermally conductive filler comprise fusible particles selected from the group consisting of In, In/Sn, In/Ag, Sn/Ag, Sn/In/Ag, Sn/Ag/Cu, Sn/Bi, In/Sn/Bi, In/Zn particles and combinations thereof.