TechOn posted an interesting interview with Paul SL Peng, AUO's Display Business Operation president. Peng says that AUO plans to start mass producing OLED panels in 2Q 2012 (this was reported before). These OLEDs will be 4"-5"in size and feature 250-300ppi - AUO will be targeting high-end smartphones.
AUO will use LTPS for the substrate, and vapor deposition for the RGB OLED sub pixels. AUO will produce these panels in their 3.5-Gen line in Hsinchu, Taiwan. In the second half of 2013, AUO's 4.5-Gen AMOLED Line in Singapore (at AFPD) will start producing panels as well.