Polychromatic microLEDs via Colour Conversion

QustomDot, a colour conversion developer for microLED displays, MICLEDI Microdisplays, a leading developer of microLED displays for Augmented Reality (AR) glasses, spin-off of imec, a world-leading research and innovation hub in nanoelectronics and digital technologies, announced a joint development program demonstrating a full-colour microLED integration in polychromatic pixel arrays.

The new technology addresses a growing demand of compact and energy-efficient microdisplays for AR applications.

MICLEDI’s microLED arrays (Blue GaN, 3um pixel pitch) for polychromatic QD integration

The Flanders-based consortium enables a technology for high-resolution and high-brightness microdisplays, combining:

  • Stable, RoHS-compliant Quantum Dot (QD) colour conversion materials
  • New microLED architecture tailored for high-efficiency colour conversion
  • High-throughput QD transfer and patterning techniques on micron-sized pixels

“New QD materials for colour conversion are a game changer. Our patented method for producing RoHS-compliant QDs deliver high-quality and stable materials. This makes them effective for microLED applications, which will accelerate product development in this untapped market. ” – says Willem Walravens, CTO QustomDot.

“Polychromatic arrays is an important development for microLED products. The manufacturing precision of MICLEDI’s 300mm microLED approach is a perfect enabler for highly efficient colour conversion. Our new pixel architecture has been optimized for high-aperture (>60% aperture at a 3µm pixel pitch) which is a key requisite to achieve a high brightness with quantum dots” – says Dr. Soeren Steudel, MICLEDI CTO.

“We are pleased to support the new microLED developments with imec’s extensive technology background and know-how in the field of high-resolution patterning and transfer. We will continue moving the state-of-the-art in pixel resolution, uniformity and process throughput” – says Prof. Geert Van Steenberge, R&D Team Leader at imec-UGent.

The new developments are supported by Flanders Innovation and Entrepreneurship (VLAIO).