35‐3: Photon Recycling Effect in Color‐Conversion Micro‐LED Displays

Color conversion is a key technology for achieving full‐color display in Micro‐LED. Utilizing the high luminescence efficiency and narrow spectral characteristics of perovskite/quantum dots, it can significantly improve display color gamut and image quality. However, its light conversion efficiency is still limited by insufficient photon utilization and the lack of theoretical models. This study establishes a theoretical optical model and reveals the mechanism by which photon recycling enhances the light conversion efficiency by analyzing its impact on the conversion process. The results show that optimizing the material concentration (3%) and thickness (20 µm) leads to peak efficiency, with photon recycling contributing up to 85%. This research provides a theoretical basis for high‐efficiency colorconverted Micro‐LED displays.