Premium
Micro‐Light Emitting Diode: From Chips to Applications
Author(s) -
Parbrook Peter J.,
Corbett Brian,
Han Jung,
Seong TaeYeon,
Amano Hiroshi
Publication year - 2021
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.202000133
Subject(s) - light emitting diode , optoelectronics , electronics , materials science , diode , scalability , led lamp , optogenetics , computer science , nanotechnology , optics , electrical engineering , physics , engineering , database , neuroscience , biology
Typical light‐emitting diodes (LEDs) have a form factor >(300 × 300) µm 2 . Such LEDs are commercially mature in illumination and ultralarge displays. However, recent LED research includes shrinking individual LED sizes from side lengths >300 µm to values <100 µm, leading to devices called micro‐LEDs. Their advent creates a number of exciting new application spaces. Here, a review of the principles and applications of micro‐LED technology is presented. In particular, the implications of reduced LED size in necessitating mitigation strategies for nonradiative device edge damage as well as the potential for higher drive current densities are discussed. The opportunities to integrate micro‐LEDs with electronics, and into large‐scale arrays, allow pixel addressable scalable integrated displays, while the small micro‐LED size is ideal for high‐speed modulation for visible light communication, and for integration into biological systems as part of optogenetic therapies.