APPARATUS FOR CUTTING BRITTLE SHEET AND METHOD FOR CUTTING BRITTLE SHEET

摘要

The present invention relates to a method for cutting a brittle sheet that has a first step for supporting the brittle sheet by a support unit and a second step for locally heating the brittle sheet supported by the support unit, forming a crack that penetrates the brittle sheet in the direction of thickness by moving the heating region on the brittle sheet, and extending that crack. In the first step, the brittle sheet is supported by the support unit in a state in which at least one part of the brittle sheet is bent and deformed such that tensile stress operates on the planned cutting line on the surface of the brittle sheet.