Breakthrough in semiconductor technology reduces OLED pixel size 50X, to approx. 100 nm diameter, representing 2,500X greater density

https://www.eurekalert.org/news-releases/1107210

"OLEDs use relatively thick metal masks to deposit light-emitting molecules, overcome using ceramic silicon nitride forming resilient membranes 3,000X thinner, integrable into standard chip production... light sources closer than half their wavelength exhibit waves with interference patterns, enabling light output reinforcement, cancellation, direction manipulation control... powerful mini lasers, medical diagnostic polarized light, razor-sharp screen in VR glasses, microscopy, sensors, phased array optics"

Related: Engineers improve infrared devices using century-old materials
https://www.eurekalert.org/news-releases/1118959