France-based microLED developer Aledia announced some breakthrough advances. The first one is a new <1.5 um microLED device that has the world's highest EQE of 32%. Aledia says that this new device leads to a Wall Plug Efficiency (WPE) of 320 milliwatts of visible light output per watt of electrical power input.
As you can guess from the first subject, Aledia has successfully reduced its microLED pixel size to 2 um, or even below. Finally, Aledia says that it has reached a 99% DCI-P3 color gamut.
Aledia raised over 360 million Euro in total, with the latest 120 million Euro round announced in October 2023. In 2020 Aledia announced that it plans to establish a 140 million euros LED production fab.
Aledia was spun-off from CEA-Leti, to commercialize 3D-Nanowire LED technology. The company has over 250 patent families (granted, or in application) and has two nanowire LED platforms:
- The most mature, now being optimized for volume manufacturing, is based on blue-emitting GaN nanowires on 8’’ silicon wafers, using color conversion for green and red colors. This platform has one of the smallest µLED (1.2µm in diameter) with up to 30% WPE, and has demonstrated the first 300mm µLED wafers fully operational. With this platform Aledia is releasing its first product, a 160µm RGB single-chip LED for fine pitch videowalls and luxury TVs.
- Aledia next-generation microLED platform (Platform 2), still in R&D, allows direct emission in RGB (all colors obtained with GaN) with a controlled emission angle — most of the light can be emitted in a +/- 20° cone. This platform targets 6500ppi (2µm subpixel) single-chip RGB arrays for AR applications.
Aledia's epiwafer production uses Veeco's CVD production equipment.
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