A stacked heat-transfer interface structure for dissipating heat from a
circuit board is disclosed to include a heat plate affixed to the circuit
board, and relatively thinner first heat transfer devices and relatively
thicker second heat transfer devices respectively attached to first and
second heat generating electronic devices of the circuit board that have
different heights for transferring heat from the first and second heat
generating electronic devices of the circuit board to the heat plate for
dissipation. Each first heat transfer device comprises a first
heat-transfer sheet member having a high heat conductivity and a low
thermal resistance and bonded to one first heat generating electronic
device, an elastically deformable second heat-transfer sheet member
having a low heat conductivity and a high thermal resistance and bonded
to the heat plate to compensate for height tolerance of the respective
first heat generating electronic device, and a heat-transfer block for
spreading heat energy from the first heat-transfer sheet member onto the
heat plate through the second heat-transfer sheet member.