Research and Applications of Light-Emitting Diodes

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Materials for Energy Applications".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 3199

Special Issue Editors

National Innovation Platform for the Fusion of Industry and Education in Integrated Circuits, Department of Electronic Science, School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, China
Interests: LEDs; lighting; displays; color conversion materials; AR/VR; eye-tracking

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Guest Editor
State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
Interests: luminescent materials and devices

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Guest Editor
School of Physics and Electronic Information, Weifang University, Weifang 261061, China
Interests: micro- and nano-photoelectric devices; laser processing of micro/nanostructures and optoelectronic devices
Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
Interests: micro-LED; perovskite; phosphor; photoelectric
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Special Issue Information

Dear Colleagues,

We are pleased to announce a Special Issue on "Research and Applications of Light-Emitting Diodes" for the journal Crystals. Light-emitting diodes (LEDs) play a crucial role in both scientific research and industry. This Special Issue aims to present the latest research findings and technological advancements in the field of LEDs, encompassing a wide range of topics from fundamental materials science to innovative applications. As LEDs continue to revolutionize lighting, sensing, and display technologies, it is essential to gather and disseminate the most recent breakthroughs and insights that drive this dynamic field forward. 

This Special Issue welcomes contributions that explore the synthesis and characterization of novel materials for LED devices, the structural optimization and performance improvement of devices and packages, and advancements in the fabrication of LEDs and their integration into various applications such as solid-state lighting, displays, and sensing. The discussion on the above aspects has been very enthusiastic in recent years, and it is still necessary to continue exploring the intrinsic physical mechanisms and process improvements of LED devices. Continuous research in the above-mentioned fields is expected to promote the theoretical development and practical applications of optoelectronic devices. Additionally, papers addressing AR/VR headsets, AR HUDs, eye-tracking, and SSVEP brain–computer interface (BCI) applications of LEDs are highly encouraged. 

We invite researchers to contribute to this Special Issue on wide-bandgap light-emitting materials and devices. This Special Issue will provide reviews while presenting new research updates on some key aspects of wide-bandgap material growth and device design. Potential topics for this Special Issue include, but are not limited to, the following:

  • LEDs based on III-V, II-VI, QDs, perovskite, etc.;
  • OLEDs;
  • Color conversion materials for LEDs (phosphor, QDs);
  • Mini-LEDs and micro-LEDs;
  • IR LEDs and sensing;
  • UV LEDs;
  • Device physics of LEDs;
  • Device fabrication techniques;
  • LED package;
  • LED displays, mini-LED displays, micro-LED displays;
  • Mini-LED backlight for LCDs;
  • AR/VR headsets;
  • AR HUDs;
  • Transparent displays;
  • Eye-tracking;
  • SSVEP brain–computer interfaces (BCIs);
  • LED lighting;
  • VLC;
  • AI-driven synthesis and discovery of LED materials;
  • AI-assisted inspection for LEDs;
  • Instrumentation for LED characterization.

Dr. Weijie Guo
Prof. Dr. Beibei Xu
Dr. Zaifa Du
Dr. Aochen Du
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • LEDs
  • lighting
  • displays
  • AR/VR
  • eye-tracking
  • color conversion materials

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Published Papers (1 paper)

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Review

18 pages, 3829 KiB  
Review
Mini-LED Backlight: Advances and Future Perspectives
by Junhua Lei, Hengli Zhu, Xiao Huang, Junjie Lin, Yifen Zheng, Yijun Lu, Zhong Chen and Weijie Guo
Crystals 2024, 14(11), 922; https://doi.org/10.3390/cryst14110922 - 25 Oct 2024
Cited by 3 | Viewed by 2659
Abstract
Miniaturized-light-emitting diode (mini-LED) backlights have emerged as the state-of-the-art technology for liquid crystal display (LCD), facilitating the improvement in a high dynamic range (HDR) and power saving. The local dimming technology divides the backlight into several dimming zones. Employing mini-LEDs, whose size ranges [...] Read more.
Miniaturized-light-emitting diode (mini-LED) backlights have emerged as the state-of-the-art technology for liquid crystal display (LCD), facilitating the improvement in a high dynamic range (HDR) and power saving. The local dimming technology divides the backlight into several dimming zones. Employing mini-LEDs, whose size ranges from 100 to 200 μm, as the light sources can enlarge the number of zones in the local dimming backlight, fulfilling the requirement for HDR. However, the halo effect still acts as one of the primary technological bottlenecks for mini-LED backlights. In this review, packaging technology of LEDs, color conversion, and the driving scheme of mini-LED backlights have been discussed. The strategies to reduce optical crosstalk in adjacent areas by various improved optical structures or to suppress the halo effect of LCDs by mini-LED backlights are summarized. The development trends of mini-LED backlights are also discussed. Full article
(This article belongs to the Special Issue Research and Applications of Light-Emitting Diodes)
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