Jung-bae Song

54.4: Highly Efficient and Wide Color Gamut White OLED Architecture for Display Application

Highly efficient WOLEDs, with the efficiencies of 19 cd/A, 16 cd/A, and 33 cd/A and CIE color coordinates of (0.25, 0.35), (0.30, 0.32), and (0.30, 0.32) respectively, have been developed. The broad white emitting TE-WOLEDs for high resolution display have been realized by controlling the microcavity between the cathode and anode. 96 % of NTSCx,y ratio was achieved from the TE-WOLED with the optical path control layer (OPCL) and new green color filter (CF).

P‐146: Highly Efficient Top Emitting White OLED Architecture for Micro‐display Applications

Very high current efficiency of 18.4 cd/A (conversion white efficiency 4 cd/A) for a single optical path top emitting WOLED and 15.8 cd/A conversion white efficiency for a multiple optical path top emitting WOLED has been successfully demonstrated. The VCRC (volume color reproduction capability) of these white OLEDs with color filters achieved 106% and 142% of sRGB, respectively.

P-228: Degradation of White Light Emitting OLEDs

We firstly report the degradation analysis of multilayer structured WOLED by using spectroscopic and microscopic analytical methods. Our analytical results demonstrated that the interface between cathode and electron-transporting layer is responsible for the intrinsic long-term degradation of WOLEDs.