Method for machining glass substrate

Details Method for machining glass substrate Method for machining glass substrate

2006-03-07

2006-03-07

Hug, Eric (Department: 1731)

Glass manufacturing

Processes

With wearing away of surface material

C065S102000, C216S097000, C219S121690

Reexamination Certificate

active

07007512

ABSTRACT:
In the present invention, a surface7of a glass substrate1is irradiated with a laser beam2to thereby form a V-shaped groove6.At that time, the laser beam2is condensed outside and above the glass substrate1.The distance between a beam-condensing point4of the laser beam2and the surface7of the glass substrate1is changed to thereby make it possible to change the angle between opposite side surfaces of the V-shaped groove. The angle is in a range of from 30 degrees to 120 degrees. Further, the laser beam used in the present invention is pulsed light, preferably with a pulse width not larger than 10 picoseconds.

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patent: 0 936 022 (1999-08-01), None
patent: 08-062445 (1996-03-01), None
patent: WO 97/35811 (1997-10-01), None

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