Researchers create LEDs as small as 90 nanometers using perovskites and OLEDs, enabling 100,000 pixels per inch for future VR displays and on-chip photonics despite efficiency challenges.

Tiny NanoLEDs Promise New Display Possibilities

MicroLEDs, with pixels just micrometers across, have long been a byword in the display world. Now, microLED-makers have begun shrinking their creations into the uncharted nano realm. In January, a startup named Polar Light Technologies unveiled prototype blue LEDs less than 500 nanometers across. This raises a tempting question: How far can LEDs shrink?We know the answer is, at least, considerably smaller. In the past year, two different research groups have demonstrated LED pixels at sizes of 1...