Monolithic full-color active-matrix micro-LED micro-display using InGaN/AlGaInP heterogeneous integration

Qi, Longheng, Li, Peian, Zhang, Xu and Wong, Ka Ming ORCID: https://orcid.org/0000-0003-3770-1380 2023. Monolithic full-color active-matrix micro-LED micro-display using InGaN/AlGaInP heterogeneous integration. Light: Science & Applications 12 , 258. 10.1038/s41377-023-01298-w

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Abstract

A prototype of full-color active-matrix micro-light-emitting diode (micro-LED) micro-display with a pixel density of 391 pixel per inch (ppi) using InGaN/AlGaInP heterogeneous integration is demonstrated. InGaN blue/green dual-color micro-LED arrays realized on a single metal organic chemical vapor deposition (MOCVD)-grown GaN-on-Si epiwafer and AlGaInP red micro-LED arrays are both monolithically fabricated, followed by the integration with a common complementary metal oxide semiconductor (CMOS) backplane via flip-chip bonding technology to form a double-layer thin-film display structure. Full-color images with decent color gamut and brightness are successfully displayed through the fine adjustment of driving current densities of RGB subpixels. This full-color display combines the advantages of high quantum efficiency of InGaN material on blue/green light and AlGaInP material on red light through heterogeneous integration and high pixel density through monolithic fabrication approach, demonstrating the feasibility and prospects of high brightness, good color performance, and high-resolution micro-LED micro-displays in future metaverse applications.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Springer Nature
ISSN:	2047-7538
Date of First Compliant Deposit:	31 October 2023
Last Modified:	31 Oct 2023 10:13
URI:	https://orca.cardiff.ac.uk/id/eprint/163578

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