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Micro light-emitting diodes

Nature Electronics volume 5, pages 564–573 (2022)Cite this article

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Abstract

Micro light-emitting diodes (microLEDs) are an emerging directly emissive display technology. Compared with organic LED and liquid-crystal displays, microLED displays offer advantages in terms of brightness, colour, minimum pixel size and lifetime. Single-micrometre-emitter sizes and pixel pitches also mean that microLEDs can be used to create novel display applications such as near-to-eye technologies and pico-projectors. Here we review the development of microLEDs, highlighting key performance characteristics that suggest that microLEDs could be the next prominent display technology in consumer electronics. We examine the three leading microLED manufacturing approaches—monolithic integration, mass transfer and nanowire growth—and consider their most likely use cases. We also highlight current microLED system demonstrations and consider the potential future applications of microLED technologies.

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Fig. 1: Performance figure of merits for microLED technology.
Fig. 2: Monolithic microLED methods.
Fig. 3: MicroLED mass transfer methods and techniques.
Fig. 4: Nanowire growth from SAE.

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Acknowledgements

We acknowledge support from the NSF through grant BCS:1926747 and Corning, Inc.

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    Keith Behrman & Ioannis Kymissis

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K.B. prepared the figures and wrote the manuscript. I.K. drafted the initial outline and co-wrote the ‘Outlook’ section.

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Correspondence to Keith Behrman or Ioannis Kymissis.

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I.K. is a co-founder of Lumiode, which is a company working in microLED displays and holds an equity stake in the company. K.B. declares no competing interests.

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Behrman, K., Kymissis, I. Micro light-emitting diodes. Nat Electron 5, 564–573 (2022). https://doi.org/10.1038/s41928-022-00828-5

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