SCORING METHOD OF A BRITTLE MATERIAL SHEET, CAPABLE OF PREVENTING THE EXPANSION OF A VENT AT AN OUTPUT END OF A SCORING LINE

摘要

PURPOSE: A scoring method of a brittle material sheet is provided to prevent the expansion of a crack incapable of controlling at the high rearward stress situation.;CONSTITUTION: A scoring method of a brittle material sheet comprises the following steps: forming a crack on a loading point of the surface of a brittle material sheet located toward a first edge of the sheet; impacting an electromagnetic radiation beam to the crack to form a vent crack; and crossing the electromagnetic radiation beam to a second edge of the sheep, for expanding the vent crack without crossing the first edge.;COPYRIGHT KIPO 2011