| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser marking method capable of reliably performing to identify a defective portion caused by laser marking during vapor deposition.SOLUTION: A laser marking method for a laser marking device is for performing the laser marking in a vacuum chamber of a vapor deposition apparatus that performs vacuum deposition on a film base material by a winding method. The laser marking method includes: an abnormality detection step of detecting, at least, abnormality of the deposition apparatus and thickness failure of a deposition layer, and signaling deposition failure; and a laser marking step of performing the laser marking on the film base material upon receiving the signal emitted from the abnormality detection step. |
