An OLED device comprises a cathode, an anode, and has therebetween: (a) a light emitting layer containing a non-light-emitting fluoranthene compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus; and (b) comprising...http://www.google.fr/patents/US20090110957?utm_source=gb-gplus-shareBrevet US20090110957 - OLED DEVICE WITH CERTAIN FLUORANTHENE HOST