Improved Thermal Properties Of Polymer-ceramic Composite Through The Impregnation Process

초록

Recently, with the miniaturization of many devices, the components of devices are also becoming smaller. Among them, there is a growing interest in micro LEDs that overcome the disadvantages of OLEDs and have high performance. Micro LEDs refer to LEDs that are smaller than 100um and have a wide range of applications due to their small size.<br /> <br /> However, micro LEDs have a heating problem. Due to the heating, the lifespan of micro LEDs is reduced by half. To solve this problem, BN (boron nitride) nanoparticles with excellent thermal conductivity were added to the epoxy used as the bonding material, which induced an improvement in the thermal conductivity of the bonding material.<br /> <br /> Experimental results showed that BN nanoparticles embedded in the polymer had higher thermal conductivity than BN pellets alone, and higher thermal conductivity was observed at higher temperatures during the embedding process. SEM (scanning electron microscopy) results showed a reduction in voids in the pellets at higher embedding temperatures. Overall, it was confirmed that the higher the embedding level, the higher the thermal conductivity.