Advances in Full-Color Microdisplays Based on MicroLED for AR and VR Applications

With the continuous proliferation of augmented reality (AR) and virtual reality (VR) technologies, especially as their applications expand across entertainment, education, healthcare, and industrial sectors, the demand for full-color microdisplays based on micro-light-emitting diodes (MicroLEDs) is expected to grow significantly. This paper reviews the latest advancements in achieving full-color microdisplays, particularly those utilizing MicroLED technology and summarizes the methods employed by various research groups in recent years to better meet the display requirements of AR/VR devices. These methods include mass transfer technology, quantum dot color conversion technology, multi-material epitaxial layer stacking technology, JBD's x-cube technology, and several other emerging technologies. These approaches provide feasible technological pathways for the realization of full-color microdisplays and offer valuable references for the future development of MicroLED-based full-color microdisplays.