Abstract: Disclosed is a foldable graphite heat spreader for reducing the internal temperature of an electronic device. The foldable graphite heat spreader includes a multi-layer graphite lamination having a top surface, a bottom surface and a corrugated surface along the bending areas of the electronic device. The multi-layer graphite lamination spreads heat on the hot spots or takes heat away the components of the electronic device. The top surface includes a first top end and a second top end. The bottom surface includes a first bottom end and a second bottom end. The corrugated surface includes a top corrugated surface and a bottom corrugated surface and have spring characteristic to expand when bending, to contract back its original shape when no bending. The foldable graphite heat spreader includes a protective plastic film for providing protection to the top surface and the top corrugated surface of the multi-layer graphite lamination from dropping particles of graphite.

Abstract: Disclosed is a graphite-over-foam structure for increasing heat conductivity between the heat spreader and the heat source. The graphite-over-foam structure includes a first foam core unit, a first graphite layer, a second foam core unit, a second graphite layer and a first bonding adhesive. The first foam core unit is configured to fill the air gap between the heat spreader and the heat source. The first graphite layer is wrapped around the first foam to do heat-conducting function between the heat source and the heat spreader. The second foam core unit is positioned next to the first foam core unit to fill the air gap between the heat spreader and the heat source. The second graphite layer is wrapped around the second foam core unit and bonded with the first graphite layer to create a first cross-section to expand the heat conducting paths.

Abstract: Disclosed is a foldable graphite heat spreader for reducing the internal temperature of an electronic device. The foldable graphite heat spreader includes a multi-layer graphite lamination having a top surface, a bottom surface and a corrugated surface along the bending areas of the electronic device. The multi-layer graphite lamination spreads heat on the hot spots or takes heat away the components of the electronic device. The top surface includes a first top end and a second top end. The bottom surface includes a first bottom end and a second bottom end. The corrugated surface includes a top corrugated surface and a bottom corrugated surface and have spring characteristic to expand when bending, to contract back its original shape when no bending. The foldable graphite heat spreader includes a protective plastic film for providing protection to the top surface and the top corrugated surface of the multi-layer graphite lamination from dropping particles of graphite.