Oxide TFT Driving Transparent AM-OLED

摘要

We have fabricated 3.2" QVGA transparent AM-OLED by integrating photo-stable top gate IGZO TFT array and highly transparent OLED, The photo-stability of oxide TFT was investigated under constant gate bias and constant current (CC) stress to explore the possibility of OLED application. After 40 hours CC stress of 10μA with halogen lamp illumination, the ΔV_(th) was just - 0.22 V while that obtained under dark was + 0.1 V. With newly designed OLED cathode and transparent getter we increase OLED transmittance up to 80% with keeping resistance of cathode at 6 Ω/□. Outdoor stability of OLED and oxide TFT make transparent AM-OLED viable in the real market.