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

ABSTRACT: Micro-light-emitting diodes (?-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 20??m, 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 is expected 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 ?-LED displays. Here, we comprehensively review the latest progress concerning the implementation of ?-LEDs and QDs in display technology, including ?-LED design and fabrication, large-scale ?-LED transfer and QD full-colour strategy. Outlooks on QD stability, patterning and deposition and challenges of ?-LED displays are also provided. Finally, we discuss the advanced applications of QD-based ?-LED displays, showing the bright future of this technology.

SUBMITTER: Liu Z 

PROVIDER: S-EPMC7214519 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature