Laminated graphene-based thermally conductive film and pad and method for manufacturing the film and pad
AssigneeSHT Smart High-Tech AB
InventorsJohan Liu, Thien Laubeck
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Abstract
A graphene-based thermally conductive film comprising a plurality of strips of a graphene film arranged so that graphene sheets of the graphene film are aligned in a direction perpendicular to the plane of the thermally conductive film, wherein the thermally conductive film comprises: a plurality of first area portions comprising strips of graphene film having a first rotational alignment in the plane of the thermally conductive film; and a plurality of second area portions comprising strips of graphene film having a second rotational alignment in the plane of the thermally conductive film, different from the first alignment.
Claims5
A method of manufacturing a laminated graphene-based thermally conductive film comprising vertically aligned graphene, the method comprising:
- providing a laminated film comprising a plurality of graphene film layers separated by a first adhesive, the graphene film layers comprising graphene sheets aligned with a plane of the laminated film, wherein the plane of the laminated film is a first plane (XY) defined by a first axis (X) and a second axis (Y) perpendicular to the first axis;
- forming a plurality of sections of the laminated film by cutting the laminated film perpendicularly to a second plane (YZ) defined by the second axis (Y) and a third axis (Z) perpendicular to each of the first and second axes;
- rotating a first subset of the plurality of sections about the first axis (X);
- attaching the plurality of sections to each other using a second adhesive, such that a block is formed consisting of the first subset of the plurality of sections having a first rotational alignment about the first axis (X) that has been rotated and a second subset of the plurality of sections having a second rotational alignment about the first axis (X) that has not been rotated, the second rotational alignment being different from the first rotational alignment;
- curing the second adhesive, thereby forming the block from the first and second subsets of the plurality of sections;
- and
- cutting the block along a plane (Y′Z′) of the block, the plane of the block being defined by being perpendicular to the first axis (X), thereby forming the laminated graphene-based thermally conductive film aligned perpendicularly to the plane (Y′Z′) of the thermally conductive film such that a first plurality of area portions of the laminated graphene-based thermally conductive film has the first rotational alignment about the first axis (X), and a second plurality of area portions of the laminated graphene-based thermally conductive film has the second rotational alignment about the first axis (X).
Dependencies are inferred from the claim text.