• EHD inkjet printing enables precise deposition of perovskite quantum dots for high-resolution color-conversion layers in micro-LED displays.
• Ink formulation and ligand engineering are critical for achieving stable droplet ejection, uniform pixels, and high photoluminescence efficiency.
• Multi-nozzle systems allow parallel RGB patterning and dynamic halide composition control for full-color displays.
• Future developments focus on scalable printing and integration to minimize crosstalk and enhance operational stability.