MICLEDI launches the first micro-LED devices with integrated micro-lenses

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August 10, 2022

MICLEDI Microdisplays BV of Leuven, Belgium – a fabless developer of micro-LED display modules for augmented reality (AR) glasses – has announced what it claims to be the first micro-LED devices with integrated micro-lenses for the pixel-level beam shaping, manufactured in the company’s proprietary 300mm manufacturing flow.

The new family is said to offer multiple benefits to waveguide AR glasses, including:

  • improved energy efficiency – by focusing the light in the cone of the targeted waveguide;
  • optimal waveguide coupling – providing additional flexibility for AR system integration and improved image quality via controllable color dispersion compensation;
  • pixel scaling at a pitch of less than 3.0 microns – with highly repeatable beam shape performance.

Samples and test kits of blue and green micro-LED arrays, as well as blue arrays with micro-lenses, were delivered to customers this summer, with red micro-LEDs coming in Q4 2022. Available both for evaluation of micro-LED devices and for display integration with waveguides, customers will see FHD display blocks and a variety of other micro-LED structures with sizes mesa down to 0.5 μm, and with micro-lens reference designs by MICLEDI.

Image: MICLEDI’s micro-LED devices are the first to offer integrated micro-lenses for pixel-level beam shaping. The micro-LED display matrix is ​​in a JLCC84 package to facilitate customer testing and characterization.

“We are extremely excited to reach this milestone with customer-grade samples of each of our RGB arrays,” said CEO Sean Lord. “Customers are asking for these improved devices. With micro lenses, we are pleased to point out that one of the hottest demands in the field, the efficiency of the “AR” pitch micro LED wall socket, will be at the best level in its class. In parallel, we are working on our first RGB modules and exploring polychromatic RGB integration approaches.

MICLEDI has also pioneered the development of a modeling platform for customizing micro-lenses. The platform will be available for AR customers to evaluate new technology in simulations and design their own micro-lenses for specific waveguide configurations. These can then be prototyped using MICLEDI’s manufacturing capabilities.

“The integration of micro-lenses into a tight-pitch micro-LED device is a culmination of MICLEDI’s unique fabrication capabilities using 300mm wafer fabrication equipment,” said co-founder and director of the technology, Dr. Soeren Steudel. “High-quality beam-shaping requires pinpoint accuracy and nanoscale stacking accuracy that can only be met in a 300mm wafer factory,” he adds.

MICLEDI is exhibiting at table #551 at the SPIE Optics + Photonics conference in San Diego, CA, USA (August 21-25).

See related articles:

MICLEDI Showcases 300mm Micro-LED Array Technology for AR Glasses at Display Week

MICLEDI collaborates with GlobalFoundries on the manufacture of micro-LED displays for AR glasses

Key words: microLED

Visit: www.micledi.com

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