Optics Express • Vol 32 • No 6
Chip-level mass detection for micro-LED displays based on regression analysis and deep learning
January 2024 • Hung-Yi Chiang, Szu-An Chen, Jyun-Jhe Chou, Kuan‐Heng Lin, Yihong Chen, Chi‐Sheng Shih, Jian‐Jang Huang
Though micro-light-emitting diode (micro-LED) displays are regarded as the next-generation emerging display technology, challenges such as defects in LED's light output power and radiation patterns are critical to the commercialization success. Here we propose an electroluminescence mass detection method to examine the light output quality from the on-wafer LED arrays before they are transferred to the display substrate. The mass detection method consists of two stages. In the first stage, the luminescent image is…