Individually Switchable InGaN/GaN Nano-LED Arrays as Highly Resolved Illumination Engines

authored by: Katarzyna Kluczyk-Korch, Sergio Moreno, Joan Canals, Angel Diéguez, Jan Gülink, Jana Hartmann, Andreas Waag, Aldo Di carlo, Matthias Auf der maur
Abstract: GaN-based light emitting diodes (LEDs) have been shown to effectively operate down to nanoscale dimensions, which allows further downscaling the chip-based LED display technology from micro-to nanoscale. This brings up the question of what resolution limit of the illumination pattern can be obtained. We show two different approaches to achieve individually switchable nano-LED arrays. We evaluated both designs in terms of near-field spot size and optical crosstalk between neighboring pixels by using finite difference time domain (FDTD) simulations. The numerical results were compared with the performance data from a fabricated nano-LED array. The outcome underlines the influence of geometry of the LED array and materials used in contact lines on the final illumination spot size and shape.
Organisation(s): QuantumFrontiers
External Organisation(s): Technische Universität Braunschweig
Type: Article
Journal: Electronics
Volume: 10
Pages: 1829
ISSN: 2079-9292
Publication date: 30.07.2021
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Signal Processing, Electrical and Electronic Engineering, Control and Systems Engineering, Hardware and Architecture, Computer Networks and Communications
Electronic version(s): https://www.mdpi.com/2079-9292/10/15/1829 (Access: Unknown)
https://doi.org/10.3390/electronics10151829 (Access: Open)

BibTeX

@article{175a837d7cc648ae91b8a4fe2fa3f738,
title = "Individually Switchable InGaN/GaN Nano-LED Arrays as Highly Resolved Illumination Engines",
abstract = "GaN-based light emitting diodes (LEDs) have been shown to effectively operate down to nanoscale dimensions, which allows further downscaling the chip-based LED display technology from micro-to nanoscale. This brings up the question of what resolution limit of the illumination pattern can be obtained. We show two different approaches to achieve individually switchable nano-LED arrays. We evaluated both designs in terms of near-field spot size and optical crosstalk between neighboring pixels by using finite difference time domain (FDTD) simulations. The numerical results were compared with the performance data from a fabricated nano-LED array. The outcome underlines the influence of geometry of the LED array and materials used in contact lines on the final illumination spot size and shape.",
keywords = "GaN LEDs, Nano-LED arrays, Spatially resolved illumination, Structured illumination",
author = "Katarzyna Kluczyk-Korch and Sergio Moreno and Joan Canals and Angel Di{\'e}guez and Jan G{\"u}link and Jana Hartmann and Andreas Waag and {Di carlo}, Aldo and {Auf der maur}, Matthias",
note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2021",
month = jul,
day = "30",
doi = "10.3390/electronics10151829",
language = "English",
volume = "10",
pages = "1829",
journal = "Electronics",
issn = "2079-9292",
publisher = "MDPI AG",
number = "15",
}