Pixels mere 90 nanometers across about size of a virus. There are 127,000 per sq. in. a new tiny LED. (Silver particles in black-and-white photographic emulsion are 200-2000 nanometers. Not same as grain.)

Coming to a screen not in foreseeable, so to speak, future?

https://www.nature.com/articles/s41586-025-08685-w