Flexible heat spreader with differential thermal conductivity
View Patent ↗A heat spreader which is configured using a composite of materials to provide localized heat spreading in certain directions across portions of the heat spreader while providing generalized heat spreading in multiple directions across other portions of the heat spreader. In certain embodiments, the localized heat spreading is across an XY plane and the generalized heat spreading is substantially continuous in XYZ directions.
1. A heat spreader comprising:
a segment of graphene, the segment of graphene being press formed to correspond to an overall length and width of the heat spreader;
a graphene spreader, the graphene spreader being embossed and formed to include a full height portion and a stepped portion;
a solid-solid phase change material, the solid-solid phase change material being laminated to be within the stepped portion of the graphene spreader;
a portion of the segment of graphene and the full height portion providing a first portion, the first portion providing localized heat spreading in certain directions across the heat spreader; and,
another portion of the segment of graphene, the solid-solid change material and the stepped portion providing a second portion, the second portion providing generalized heat spreading in multiple directions across the heat spreader, the second portion of the heat spreader being positioned laterally contiguous with a camera of an information handling system, the second portion of the heat spreader providing structural integrity to a portion of a housing of the information handling system defining an aperture associated with the camera; and wherein
the information handling system comprises a tablet type information handling system; and,
the display is disposed across a top of the tablet type information handling system.
2. The heat spreader of claim 1 , wherein:
the localized heat spreading is across an XY plane of the heat spreader and the generalized heat spreading is substantially continuous in XYZ directions across the heat spreader.
3. The heat spreader of claim 1 , wherein:
a thermally conductive metal is incorporated into the first portion of the heat spreader.
4. An information handling system comprising:
a housing;
a processor;
a bus coupled to the processor;
a camera;
a display; and
a heat spreader thermally coupled to the processor, the heat spreader comprising
a segment of graphene, the segment of graphene being press formed to correspond to an overall length and width of the heat spreader;
a graphene spreader, the graphene spreader being embossed and formed to include a full height portion and a stepped portion;
a solid-solid phase change material, the solid-solid phase change material being laminated to be within the stepped portion of the graphene spreader;
a portion of the segment of graphene and the full height portion providing a first portion, the first portion providing localized heat spreading in certain directions across the heat spreader; and,
another portion of the segment of graphene, the solid-solid change material and the stepped portion providing a second portion, the second portion providing generalized heat spreading in multiple directions across the heat spreader, the second portion of the heat spreader being positioned laterally contiguous with the camera of the information handling system, the second portion of the heat spreader providing structural integrity to a portion of the housing of the information handling system defining an aperture associated with the camera; and wherein
the information handling system comprises a tablet type information handling system; and,
the display is disposed across a top of the tablet type information handling system.
5. The system of claim 4 , wherein:
the localized heat spreading is across an XY plane of the heat spreader and the generalized heat spreading is substantially continuous in XYZ directions across the heat spreader.
6. The system of claim 4 , wherein:
a thermally conductive metal is incorporated into the first portion of the heat spreader.
7. The heat spreader of claim 1 , wherein:
the first portion of the heat spreader is positioned over the processor of the information handing system, the first portion of the heat spreader extending laterally beyond a footprint of the processor, the first portion of the heat spreader distributing heat away from the processor and towards edges of the information handling system.
8. The system of claim 4 , wherein:
the first portion of the heat spreader is positioned over the processor of the information handing system, the first portion of the heat spreader extending laterally beyond a footprint of the processor, the first portion of the heat spreader distributing heat away from the processor and towards edges of the information handling system.