The Monolithic RGB MicroLED

MICROLED ON A 300MM WAFER. PHOTO: ALEDIA

A technology that can dramatically increase the utilization and productivity of micro light emitting diode (LED) has been developed in Korea. It is gaining much attention on whether the popularization of micro-LED will be accelerated, which has been making slow progress due to technical difficulties.

Lumens announced on the 24th that they have developed a Monolithic red, green and blue (RGB) epitaxial wafer for micro-LED. Epitaxial wafer is a substrate which has a light emitting layer, and Lumens’ technology is characterized by stacking RGB on a single wafer.

ET News
Lumens claims to be reducing the chip transfer process by a 1/3, reducing the number of microLEDs required and therefor costs, and reducing pixel size for higher resolutions. We use Google Translate so you don’t have to. Source: Lumens

It’s been a while since we covered Lumens going back to 2017-2018, first on its plans for HD HUDs using microLEDs. and then Korea’s tilt towards leadership in microLED technology. There’s been very little of any news since and according to this report, it has been restructuring, selling real estate, and is now devoted exclusively to microLEDs as a growth engine. Make what you will of the dead air for all those years, the company was on the radar for microLEDs, doesn’t seem to make much noise anyhow, and this may be an actual breakthrough that could change all that.