Patent ID: 9174307
Filing Date: 2015-11-03
Classification: B23K,C03B

Abstract:
1. A substrate cutting apparatus, comprising: a stage configured to support a substrate; a first laser generator configured to emit a first laser beam toward the substrate, the first laser beam being a short-pulse laser beam; and a beam swing unit disposed on a beam path of the first laser beam, the beam swing unit swinging the first laser beam in a predetermined light irradiating section on the substrate and to reciprocate a beam spot formed by the first laser beam in the predetermined light irradiating section a multiple number of times so as to provide intermittent irradiation to a spot region of the predetermined light irradiating section, the light irradiating section on the substrate including a curved line section, wherein: the beam swing unit includes a reflection unit and a driver, the reflection unit including a reflection surface reflecting the first laser beam emitted from the first laser generator toward the substrate, and the driver driving the reflection unit, the driver includes a first rotation shaft and a second rotation shaft intersecting the first rotation shaft, the first and second rotation shafts being parallel with the reflection surface, and the driver controls a motion of the reflection unit through the first rotation shaft and the second rotation shaft to swing the first laser beam according to the curved line section.