69‐2: Transparent Conductive Hybrid Cathode Structure for Top‐Emitting Organic Light‐Emitting Devices

Abstract

There is an increasing attention paid to improving transparent conductive electrodes for applications in highly transparent and large area displays. We optimized top‐emitting blue organic light‐emitting diodes (TE‐BOLEDs) using hybrid cathode consisting of a thermally evaporated Mg/Ag capped with IZO. The device of cd/A/CIEy which used the hybrid cathode improved by 20% more than that with the identical organic layers and conventional Mg/Ag cathode. Meanwhile the transparency increased by 13% and sheet resistance decreased by half. Balancing the device performance, transparency and resistivities, different hybrid cathode structure could meet various requirements.

23‐3: Self‐Assembled Cathode Patterning for Micro‐Welding in Top‐Emission AMOLED Displays to Reduce IR Drop

“…Recently, more focus has been spent on making high resolution TVs with top-emission AMOLEDs as an alternative solution for large panel applications. [1,2] The challenge for this direction is the voltage drop (or IR drop) caused by the thin common cathode layer. When making a small size (< 7 inch) topemission AMOLED, it is not a critical issue.…”