How many 1080p screens can you fit on a pinhead? These German physicists reckon about one

Micro-OLED displays with 1080p (1920×1080) resolution have been around for a few years now, but a group of German researchers has taken things to the next level. They’ve engineered an OLED pixel so small that an entire 1080p display could fit into a single square millimeter, potentially changing the game for wearable displays.…