Method and apparatus for separation of strengthened glass and articles produced thereby
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United States of America Patent
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Nov 28, 2017
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N/A
app pub date -
Dec 2, 2013
filing date -
Feb 28, 2012
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Abstract
Methods and apparatus for separating substrates are disclosed, as are articles formed from the separated substrates. A method of separating a substrate having first and second surfaces includes directing a beam of laser light to pass through the first surface and, thereafter, to pass through the second surface. The beam of laser light has a beam waist located at a surface of the substrate or outside the substrate. Relative motion between the beam of laser light and the substrate is caused to scan a spot on a surface of the substrate to be scanned along a guide path. Portions of the substrate illuminated within the spot absorb light within the beam of laser light so that the substrate can be separated along the guide path.
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