Micro-light-emitting diodes with quantum dots in display technology

• 作者: Zhaojun Liu Chun-Ho Lin Byung-Ryool Hyun Chin-Wei Sher Zhijian Lv Bingqing Luo Fulong Jiang Tom Wu Chih-Hsiang Ho Hao-Chung Kuo Jr-Hau He
• 来源期刊: 光：科学与应用（英文版）
• 年，卷（期）: 2020,（3）
• 所属期刊栏目: Reviews
• 页码范围: 531-553
• 页数: 23页
• 语种: 英文

摘要

Micro-light-emitting diodes (μ-LEDs) are regarded as the cornerstone of next-generation display technology to meet the personalised demands of advanced applications, such as mobile phones, wearable watches, virtual/augmented reality, micro-projectors and ultrahigh-definition TVs. However, as the LED chip size shrinks to below 20μm, conventional phosphor colour conversion cannot present sufficient luminance and yield to support high-resolution displays due to the low absorption cross-section. The emergence of quantum dot (QD) materials isexpected to fill this gap due to their remarkable photoluminescence, narrow bandwidth emission, colour tuneability, high quantum yield and nanoscale size, providing a powerful full-colour solution for μ-LED displays. Here, we comprehensively review the latest progress concerning the implementation ofμ-LEDs and QDs in display technology, including μ-LED design and fabrication, large-scaleμ-LED transfer and QD full-colour strategy. Outlooks on QD stability, patterning and deposition and challenges ofμ-LED displays are also provided. Finally, we discuss the advanced applications of QD-based μ-LED displays, showing the bright future of this technology.