Development of new heat dissipated material in metal core PCB for LEDbacklight source

摘要

We report on carbon nano-fibers (CNFs) for applyingto epoxy as a highly thermal conductive adhesive. Inorder to fabricate CNFs, electro-spinning processwas performed with polyacrylonitrile (PAN)solutions. The sample was stabilized at the annealingtemperature of 360oC, and carbonized from 900 to1100oC. It is shown that the synthesized CNFs have agood thermal conductivity of several hundred W/m K.LED backlight units (BLUs) fabricated with MPCBusing CNF-mixed epoxy give a better heat dissipationand higher performance than normal LED BLUs. Onthe basis of SEM, XRD, and FTIR, the characteristicsof CNFs are described.