Patent ID: 8106330
Filing Date: 2012-01-31
Classification: B23K,H01L

Abstract:
1. A laser processing apparatus comprising: a floating unit to float a substrate; a transporting unit to transport the substrate in a horizontal direction; a chuck provided with the transporting unit, the chuck being in contact with the substrate; an ultrasonic vibration source connected to the chuck; an optical system for condensing a laser beam into a linear shape or a rectangular shape and for irradiating the substrate with the laser beam; and an atmosphere control unit to control an atmosphere around an irradiation section with the laser beam; wherein the atmosphere control unit is provided with a heating means to heat the substrate, wherein the ultrasonic vibration source applies an ultrasonic vibration to the substrate through the chuck, during irradiating the substrate with the laser beam by the optical system, and wherein the floating unit is configured to spout and absorb gas from an opening during irradiating the substrate with the laser beam.