Patent ID: 8097829

Claim:
A laser processing method in which a plurality of laser beams, of which at least a wavelength or an intensity is different from each other, are irradiated onto a workpiece in a sequential order of the differing wavelength and intensity to process the workpiece, the method comprising: moving a first laser beam and a second laser beam relative to a workpiece along a first direction, wherein the first laser beam has at least a wavelength or an intensity that differs from a wavelength or an intensity of the second laser beam; irradiating the first laser beam through a first portion of an optical element that directs the first laser beam onto the workpiece; subsequent to the irradiating the first laser beam, irradiating the second laser beam through a second portion of the optical element that directs the second laser beam onto the workpiece, wherein the first portion is different than the second portion; moving the first laser beam and the second laser beam relative to the workpiece along a second direction; irradiating the first laser beam through a third portion of the optical element that directs the first laser beam onto the workpiece, wherein the third portion is dependent on the second direction; subsequent to the irradiating the first laser beam through the third portion, irradiating the second laser beam through a fourth portion of the optical element that directs the second laser beam onto the workpiece, wherein the third portion is different than the fourth portion and the fourth position is dependent on the second direction.