A high-efficiency full-color monolithic micro-LED display for AR/MR/VR applications using NPQD technology

Chen Chen; Jie Song

doi:10.1117/12.2647195

21 March 2023 A high-efficiency full-color monolithic micro-LED display for AR/MR/VR applications using NPQD technology

Chen Chen, Jie Song

Proceedings Volume PC12421, Gallium Nitride Materials and Devices XVIII; (2023) https://doi.org/10.1117/12.2647195
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Micro-light emitting diodes (micro-LEDs) have attracted lots of attention in recent years due to their compact size, high efficiency, and good reliability for display applications. More and more research communities and industries are putting efforts into exploring micro-LEDs to achieve high-performance micro-LED display which can be used in monitor, watch, AR/VR, etc. Here we present a novel application of nanoporous GaN with quantum dots (NPQD®)_in the field of micro-LEDs. We demonstrate fabricating full-color monolithic micro-LEDs with loading green and red QDs inside nanoporous GaN. Strong light scattering induced by nanoporous GaN structure greatly enhanced the absorption of the blue pumping light by QDs. Nearly 50% power conversion efficiency from blue to red has been achieved at 2.5µm sub-pixel size. A full-color micro-LED display driven by CMOS with a sub-pixel size of less than 5um has been fabricated using NPQD® technology.

Conference Presentation

Citation Download Citation

Chen Chen and Jie Song "A high-efficiency full-color monolithic micro-LED display for AR/MR/VR applications using NPQD technology", Proc. SPIE PC12421, Gallium Nitride Materials and Devices XVIII, (21 March 2023); https://doi.org/10.1117/12.2647195

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