Anisotropic conductive film (ACF) step-by-step line ablation using NIR, green, and DUV wavelengths femtosecond laser for Micro-LED display repair.

Anisotropic conductive film (ACF) is an essential layer used in Micro-LEDs and is applied through laser processing during the repair process. However, research related to the repair process using step-by-step morphology processing of ACF has hardly been conducted so far. Therefore, in this study, we proposed and thoroughly investigated a processing morphology suitable for the repair process through step-by-step processing using femtosecond lasers with wavelengths of 1026 (NIR), 513 (Green), and 257 (DUV) nm. By appropriately processing the ACF according to the intended purpose, it is expected that the desired repair process can be applied and can also be applied to all fields where ACF is utilized. [ABSTRACT FROM AUTHOR]