17.1: Composite Cathode OLED Device Structure Design for Transparent Display

With rapid development toward transparent display, there is an urgent need for electrode with ultra‐high transparency. Here, based on IZO, we propose and experimentally demonstrate a composite cathode capable of efficient micro‐cavity effect within the emitting area and high transmittance in the non‐emitting area. We envision the composite cathode to find its applications in the next generation ultra‐high transparent display technology.