An organic EL device which drives over a wide range from low brightness to high brightness for light source applications, operates stably over a wide range of brightness and has excellent life property is provided. The device comprises at least one pair of electrodes 2 and 5, and a plurality of functional...http://www.google.de/patents/US20050170208?utm_source=gb-gplus-sharePatent US20050170208 - Organic electroluminescent device and method for manufacturing the same
