GLASS SHEET AND CHEMICALLY STRENGTHENED GLASS SHEET
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United States of America Patent
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app pub date -
Mar 24, 2016
filing date -
Sep 25, 2013
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Abstract
The present invention relates to a glass sheet having an amount of fluorine contained in the glass of more than 0.23 mol %·μm and 21 mol %·μm or less on a depth-direction profile by secondary ion mass spectrometry (SIMS) in which a horizontal axis expresses depth and a vertical axis expresses fluorine concentration (mol %). According to the glass sheet of the present invention, warpage after chemical strengthening can be reduced and polishing treatment or the like before the chemical strengthening can be simplified or omitted.
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