METHOD AND APPARATUS FOR LASER SCRIBING GLASS SHEET SUBSTRATE COATINGS

摘要

PROBLEM TO BE SOLVED: To provide a method for laser scribing glass sheet substrate coatings at high speed.

SOLUTION: The method and an apparatus are provided for laser scribing coatings on glass sheet substrates by conveying the substrates adjacently to a laser source 83 which provides a pulse laser beam 84 which includes a pulse duration of at least 8 nanoseconds, a frequency of at least 50 kilohertz and a wavelength at a near infrared fundamental frequency and by reflecting the beam by an XYZ galvanometer controlled mirror system 90 toward an uncoated surface of the substrate by passing through a coating on the other surface to provide overlapping ablations through the coating so as to perform scribing at a speed of at least 1,000 mm/s.

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