量子点材料因其独特的发光特性，在显示和固态照明领域具有极高的应用价值。相比于传统显示器件，量子点发光二极管(QLED)具有高的稳定性、良好溶液可加工性和高色彩饱和度等优势，因而其成为新一代显示技术的核心器件。介绍了QLED的构成、工作机理及研究进展，并指出了其在中国显示行业的应用现状与前景。

Quantum dot materials have extremely high application value in the fields of displays and solid-state lighting due to their unique light emission characteristics. Compared with the traditional display devices, quantum dot light emitting diodes (QLEDs) have the advantages of high stability, good solution processability and high color saturability, which make them become the core device of the new generation display technology. The structure, working principle and research progresses of QLEDs are introduced, and their application status and prospects in China display industry are also presented.