Metasurface-driven OLED displays beyond 10,000 pixels per inch

In this study, we show that the architecture of organic light-emitting diode (OLED) displays can be completely reenvisioned through the introduction of nanopatterned metasurface mirrors. In the resulting meta-OLED displays, different metasurface patterns define red, green, and blue pixels and ensure optimized extraction of these colors from organic, white light emitters. This new architecture facilitates the creation of devices at the ultrahigh pixel densities (>10,000 pixels per inch) required in emerging display applications (for instance, augmented reality) that use scalable nanoimprint lithography. The fabricated pixels also offer twice the luminescence efficiency and superior color purity relative to standard color-filtered white OLEDs.

Source: ScienceNOW - October 22, 2020 Category: Science Authors: Joo, W.-J., Kyoung, J., Esfandyarpour, M., Lee, S.-H., Koo, H., Song, S., Kwon, Y.-N., Song, S. H., Bae, J. C., Jo, A., Kwon, M.-J., Han, S. H., Kim, S.-H., Hwang, S., Brongersma, M. L. Tags: Physics reports Source Type: news