Patent ID: 7638730
Filing Date: 2009-12-29
Classification: C03B,Y10T

Abstract:
1. An apparatus for cutting a glass plate, comprising: a cracking means for forming a minute crack at a point on the glass plate where the cutting is started, at least one scribing means using a laser beam absorbed by the glass plate, at least one quenching means using a quenching fluid after irradiation of the laser beam, a breaking means using the laser beam, the breaking means comprising a laser oscillator, a reflection mirror and a focusing lens, and a photo mask formed with light transmission openings for transmitting a part of the laser beam to be irradiated on the glass plate, wherein the light transmission openings are formed to prevent the laser beam being irradiated on a scribing line by the scribing means, and to symmetrically arrange the laser beam for the scribe line.