A Review on Quantum Dot-Based Color Conversion Layers for Mini/Micro-LED Displays: Packaging, Light Management, and Pixelation,Advanced Optical Materials

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A Review on Quantum Dot-Based Color Conversion Layers for Mini/Micro-LED Displays: Packaging, Light Management, and Pixelation
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2023-08-03 , DOI: 10.1002/adom.202300873
Junchi Chen ₁ , Qiliang Zhao ₂ , Binhai Yu ₂ , Uli Lemmer ₁

Affiliation

Mini/microlight-emitting diodes (LEDs) are one of the most promising technologies for next-generation displays to meet the requirements of demanding applications, including augmented reality/virtual reality displays, wearable devices, and microprojectors. To realize full-color displays, the strategy of combining miniaturized blue nitride-based LEDs with color conversion layers is promising due to the high efficiencies of the LEDs and the advantageous manufacturing. Quantum dots (QDs), owing to their high photoluminescence quantum yield, small particle size, and solution processability, have emerged as the color conversion material with the most potential for mini/micro-LEDs. However, the integration of QDs into display technologies poses several challenges. From the material side, the stability of QD materials is still challenging. For the case of packaging QDs in a matrix, the dispersion quality of QDs and the light extraction of the emission need to be improved. From the fabrication side, the lack of high-precision mass manufacturing strategies in QD pixelation hinders the widespread application of QDs. Toward the issues above, this review summarizes the research on QD materials for color conversion display in recent years to systematically draw an overview of the packaging strategies, the light management approaches, and the pixelation methods of QD materials toward mini/micro-LED-based display technologies.

中文翻译：

Mini/Micro-LED 显示器基于量子点的颜色转换层综述：封装、光管理和像素化

微型/微型发光二极管 (LED) 是下一代显示器最有前途的技术之一，可以满足增强现实/虚拟现实显示器、可穿戴设备和微型投影仪等苛刻应用的要求。为了实现全彩显示，由于 LED 的高效率和有利的制造优势，将小型化蓝色氮化物基 LED 与颜色转换层相结合的策略是有前途的。量子点（QD）由于其高光致发光量子产率、小粒径和溶液加工性能，已成为最有潜力用于Mini/Micro-LED的颜色转换材料。然而，将量子点集成到显示技术中带来了一些挑战。从材料方面来看，QD材料的稳定性仍然具有挑战性。对于将量子点封装在矩阵中的情况，需要提高量子点的色散质量和发射的光提取。从制造方面来看，量子点像素化缺乏高精度大规模制造策略阻碍了量子点的广泛应用。针对上述问题，本文综述了近年来用于彩色转换显示的QD材料的研究，系统地概述了基于Mini/Micro LED的QD材料的封装策略、光管理方法和像素化方法。显示技术。

更新日期：2023-08-03

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