Patent ID: 6101094
Filing Date: 2000-08-08
Classification: H05K

Abstract:
An electronic device capable of passively dissipating heat, comprising:a plurality of first circuit components;a first circuit board, said first circuit board having a first surface and a second surface, opposite said first surface;a second circuit board, said second circuit board having a first surface including a thermally conductive layer formed on a first area of said first surface, said second circuit board having a second surface, opposite said first surface, said second circuit board being separated from said first circuit board such that said second circuit board first surface is opposite said first circuit board second surface, said second circuit board configured to hold said plurality of first circuit components, wherein said second circuit board is electrically connected to said first circuit board so that said plurality of first circuit components are electrically connected to said first circuit board;at least one heat-generating circuit component that generates more heat in operation than any of said plurality of first circuit components, said at least one heat-generating circuit component having a top surface and a bottom surface, opposite said top surface, said at least one heat-generating circuit component bottom surface being attached to a portion of said first circuit board second surface such that said at least one heat-generating circuit component top surface is opposite said thermally conductive layer formed on said second circuit board first surface and such that said at least one heat-generating circuit component top surface is separated from said thermally conductive layer formed on said second circuit board first surface;an electrically-insulating thermal conductor interposed between said at least one heat-generating circuit component top surface and said thermally conductive layer formed on said second circuit board first surface to contact said at least one heat-generating circuit component top surface to transfer at least a portion of heat generated by said at least one heat-generating circuit component to said thermally conductive layer formed on said second circuit board first surface so as to dissipate said portion of heat.