Scientists at China’s Zhejiang University have created a display with the smallest pixels ever utilizing a new kind of LED: the perovskite LED. These diodes, measuring in the range of nanometers, make micro-LEDs look like giants. As their name suggests, these LEDs are based on perovskite semiconductors, which allowed scientists to shrink them down to sizes previously thought impossible. The scientists published the research that went into creating these LEDs in the journal Nature as “Downscaling micro- and nano-perovskite LEDs.”
The result of downsizing LEDs to such an extreme measure was the creation of a display with an astonishing 127,000 PPI, a world record.
“Making electronic devices smaller is an everlasting pursuit for scientists and engineers”, said Prof. DI Dawei, Deputy Director of the International Research Center for Advanced Photonics of Zhejiang University. “Perovskite LEDs are an emerging technology for display and lighting applications. Several years ago, we thought it might be a good idea to make perovskite LEDs smaller, similar to what has been done for micro-LEDs and micro-OLEDs. In 2021, we introduced the concept of ‘micro-perovskite LEDs (micro-PeLEDs)’. Since then, we wanted to make the devices even smaller, and explore the downscaling limits for the LEDs”, said Di.
See also: Samsung Display reaches 5000 nits of brightness on small OLED panels
