GLASS SUBSTRATE CUTTING DEVICE AND GLASS SUBSTRATE CUTTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a glass substrate cutting method which prevents an uncut part from being formed in a cut end part in the cutting of the glass substrate by heating and cooling. SOLUTION: The glass substrate cutting method includes: a groove-forming step of forming a cut starting groove on the starting edge of a cut scheduled line on the surface of the glass substrate and a cut ending groove on the termination of the cut scheduled line; and a crack line forming step of forming a crack line formed by extending the crack produced in the thickness direction of the glass substrate from the starting to the ending of the cut scheduled line by locally heating and cooling the glass substrate while scanning the surface of the glass substrate. COPYRIGHT: (C)2010,JPO&INPIT