MicroLED optical I/O developers

Aledia, headquartered in Grenoble, France,  was founded in 2011 to commercialize a  3D GaN Nanowire-on-Silicon platform, on 200 mm and 300 mm silicon wafers using CMOS wafer-fabrication processes and tools. 

The company develops microLED solutions addressing three strategic markets: optical interconnects for AI data centers, augmented reality (AR) microdisplays, and advanced microLED displays.

Manufactured on 200 mm silicon wafers using semiconductor industry standard processes, Aledia says that its technology combines the scalability of silicon manufacturing with the performance advantages of 3D GaN nanowire architectures, enabling breakthrough microLED performance across multiple applications.

ALLOS Semiconductors, based in Dresden, Germany, and established in 2014, is a supplier of GaN‑on‑silicon microLED epiwafers.

ALLOS provides specialized materials for two areas of rapidly growing strategic importance: microLED displays, especially microdisplays, and microLED-based optical interconnects for AI computing. The company's materials are fully silicon fab-compatible and are available in both 200 mm and 300 mm wafer diameters. This enables microLED device manufacturing.

In 2017 ALLOS and Veeco demonstrated 200mm GaN-on-Si wafers for micro-LED production. In 2020 ALLOS sold its high-power electronics and RF business to AZUR SPACE to focus its business on the microLED market. In November 2022 we posted a spotlight article on ALLOS Semiconductors. 

Austria-based ams OSRAM is a multinational photonics application developer, focusing on sensors, LEDs and light-based treatment solutions.

ams OSRAM is at the forefront of microLED epiwafer production. In 2021, the company announced that it will expand its LED production plant in Kulim, Malaysia, with an investment of around $850 million, with plans to produce mini-LED and micro-LED chips on 8-inch wafers. ams OSRAM hoped to enter microLED mass production in 2024, mainly to supply microLEDs to Apple.

CEA-Leti is a non-profit research institute based in Grenoble, France. CEA-Leti is one of the world's largest microelectronics and nanotechnology organizations.

Leti develops micro LED displays, with a focus on high-performance microdisplays. Leti has implemented this LED technology to manufacture high-brightness μLED arrays hybridized on silicon circuits. CEA-Leti also developed microLED communication technology.

In 2017 Leti demonstrated the world's first 10-um GaN Microdisplay and in 2019 Leti researchers developed a new CMOS-based process to produce high performance Micro-LED displays. In 2011, Aledia was established as a spin-off from CEA-Leti to develop and commercialize its 3D Nanowire microLED display technology.

Taiwan's ITRI (Industrial Technology Research Institute) is a national research organization, with a mission of conducting technological research, promoting industrial development, creating economic value and improving social welfare for Taiwan. ITRI, founded in 1973, is the largest applied technology R&D institution in Taiwan.

ITRI has been developing microLED technologies for many years, including microdisplays, a microLED sensor platform, tiled microLED displays, and more. ITRI is currently focused on microLED microdisplays, microLED-based optical I/O technologies, and QD for color conversion.

Mojo Vision is a U.S.-based high-performance microLED platform company developing optical interconnect and display technologies for next-generation AI applications.

Originally founded in 2015 to build an augmented-reality contact lens, Mojo developed the world’s smallest and densest dynamic display as part of that effort before pivoting in 2023 to focus on commercializing its core micro-LED technology.

Today, Mojo is developing a flexible “wafers-in, wafers-out” microLED platform. Built over a decade by a team of skilled engineers, the company has developed a powerful technology toolkit – including advanced 300mm silicon architecture, tiny GaN-on-silicon microLED emitters, efficient photodetectors, proprietary quantum dots, custom micro-lens arrays, multicore fiber bundles, and proprietary software – that can be configured in custom ways depending on the application.

UK-based Plessey is a design and manufacturing company focused on GaN-on-Silicon micro-LEDs.

Plessey developed unique monolithic micro-LED process technology that can be used to produce Micro-LED displays without a transfer process.

Over the years, the company demonstrated several prototypes and has also launched two product lines (for segmented microdisplays and full dot-matrix ones). In 2020, Plessey announced a partnership with Facebook under which Plessey will dedicate all of its manufacturing operations to support Facebook with its own product development. While not exactly an acquisition of Plessey's entire microLED operations, this was pretty close.

In 2025, Haylo Labs acquired Plessey for $100 million.

Here's a brochure that details Plessey's microLED platform, with a focus on optical I/O solutions.