Wearable displays are catching up with phones and smart watches. For decades, engineers have sought OLEDs that can bend, twist, and stretch while maintaining bright and stable light. These displays could be integrated into a new class of devices—woven into clothing fabric, for example, to show real-time information, like a runner’s speed or heart rate, without breaking or dimming.
But engineers have always encountered a trade-off: the more you stretch these materials, the dimmer they become. Now, a…
