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Appl. Sci. 2018, 8(9), 1557; https://doi.org/10.3390/app8091557

Mini-LED and Micro-LED: Promising Candidates for the Next Generation Display Technology

1
Department of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, Xiamen University, Xiamen 361005, China
2
Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
3
HKUST Fok Ying Tung Research Institute, Nansha District, Guangzhou 511458, China
4
Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
*
Authors to whom correspondence should be addressed.
Received: 31 July 2018 / Revised: 13 August 2018 / Accepted: 30 August 2018 / Published: 5 September 2018
(This article belongs to the Special Issue Group III-V Nitride Semiconductor Microcavities and Microemitters)
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Abstract

Displays based on inorganic light-emitting diodes (LED) are considered as the most promising one among the display technologies for the next-generation. The chip for LED display bears similar features to those currently in use for general lighting, but it size is shrunk to below 200 microns. Thus, the advantages of high efficiency and long life span of conventional LED chips are inherited by miniaturized ones. As the size gets smaller, the resolution enhances, but at the expense of elevating the complexity of fabrication. In this review, we introduce two sorts of inorganic LED displays, namely relatively large and small varieties. The mini-LEDs with chip sizes ranging from 100 to 200 μm have already been commercialized for backlight sources in consumer electronics applications. The realized local diming can greatly improve the contrast ratio at relatively low energy consumptions. The micro-LEDs with chip size less than 100 μm, still remain in the laboratory. The full-color solution, one of the key technologies along with its three main components, red, green, and blue chips, as well color conversion, and optical lens synthesis, are introduced in detail. Moreover, this review provides an account for contemporary technologies as well as a clear view of inorganic and miniaturized LED displays for the display community. View Full-Text
Keywords: mini-LED; micro-LED; full-color display; quantum dot mini-LED; micro-LED; full-color display; quantum dot
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wu, T.; Sher, C.-W.; Lin, Y.; Lee, C.-F.; Liang, S.; Lu, Y.; Huang Chen, S.-W.; Guo, W.; Kuo, H.-C.; Chen, Z. Mini-LED and Micro-LED: Promising Candidates for the Next Generation Display Technology. Appl. Sci. 2018, 8, 1557.

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