7,8,10-triphenylfluoranthene [TPF], 7,10-diphenyl-8-p-tolylfluoranthene [DPTF] and 7,10-diphenyl-8-p-cyanophenlyfluoranthene [DPCF] were synthesized by using the Knoevenagel condensation and Diels-Alder addition. TPF showed sky-blue CIE value of (0.192, 0.269) and 3.27cd/A at 10mA/cm(2). DPTF also showed sky-blue CIE value of (0.185, 0.252) and 2.31cd/A at 10mA/cm(2).