Patent ID: 9724783
Date: 2017-08-08
CPC Classifications: B23K,H01L

Claim:
1. A laser processing apparatus, comprising: a chuck table configured to hold a workpiece thereon; laser beam irradiation means for irradiating a pulse laser beam upon the workpiece held on the chuck table; X-axis direction moving means for moving the chuck table and the laser beam irradiation means relative to each other in an X-axis direction; Y-axis direction moving means for moving the chuck table and the laser beam irradiation means relative to each other in a Y-axis direction perpendicular to the X-axis direction; and control means for controlling the laser beam irradiation means, the X-axis direction moving means and the Y-axis direction moving means; the laser beam irradiation means including the control means rendering the strobo flash irradiation means and the image pickup means operative in accordance with a timing of the pulse laser beam oscillated by the pulse laser beam oscillation means and irradiated upon the workpiece held on the chuck table to detect a processed state on the basis of an image signal from the image pickup means.