[OLED5] OLED Optical Design

[OLED5-4] Light Extraction and Viewing Angle Characteristics of Nano-structure embedded Top-emitting OLEDs fabricated by Vacuum Deposition Processes

*Doo-Hee Cho¹, Young-Sam Park¹, Hyunsu Cho¹, Kang Me Lee¹, Hye Jin Yun¹, Seung-Youl Kang¹, Seong-Deok Ahn¹, Hyunkoo Lee ¹ (1. ETRI (Korea))

Keywords:light extraction, viewing angle, TEOLED

We fabricated the nano-structure applicable for a highly efficient and color stable TEOLED by using thermal evaporation and organic vapor phase deposition, respectively. The nano-structure integrated TEOLEDs showed efficiency increase by 12% (thermal evaporation) and 32% (OVPD), respectively. The Δ(u’v’) from normal direction to 30^o were 0.06 and 0.03, respectively.