SinkPAD aluminum printed circuit board technology reportedly improves LED thermal management. Is effective in high-power LED cooling. Conducts heat from the LED by enabling a direct thermal path between the LED and surrounding atmosphere. LED thermal resistance can be reduced by eliminating the lowest thermal conductivity/highest thermal resistance component, the dielectric material. Dielectric material functions only as an electrically insulated barrier to the metal base, but leaves it thermally connected.
SinkPAD, www.sinkpad.com