Integrated heat spreader, heat sink or heat pipe with pre-attached phase change thermal interface material and method of making an electronic assembly
First Claim
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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.
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Abstract
An integrated heat spreader, heat sink or heat pipe with pre-attached phase change thermal interface material and a method of making an electronic assembly.
93 Citations
12 Claims
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1. A device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device comprising:
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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 particles of the at least one thermally conductive filler are fusible particles, wherein the fusible particles are solder 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.
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11. A device comprising:
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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, 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.
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12. A device comprising:
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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, wherein the particles of the at least one thermally conductive filler include both fusible particles and nonfusible particles, and wherein the fusible 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.
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Specification