Patent ID: 9010151
Filing Date: 2015-04-21
Classification: B23K,C03B

Abstract:
1. A glass sheet cutting method, comprising: radiating a laser beam from above along a preset cutting line of a glass sheet; and fusing and dividing the glass sheet using the preset cutting line as a boundary, wherein the laser beam comprises: wherein a jet nozzle for jetting assist gas to blow off molten foreign matter generated by the fusing is provided, wherein the glass sheet is fused and divided into a product portion and a non-product portion by the fusing laser beam, wherein the assist gas is jetted onto a region irradiated with the fusing laser beam from above on a product portion side, and wherein the annealing laser beam is obliquely radiated from above onto at least one of the fused end surfaces of the product portion through a gap that is formed between the fused end surfaces by the fusing.