METHOD FOR MANUFACTURING REINFORCED GLASS SUBSTRATE AND REINFORCED GLASS SUBSTRATE

WIPO Patent Application WO/2013/027651

A1

According to the present invention, damage and breakage are prevented even when a sheet-shaped glass material after a chemical reinforcement is cut and fragmented through an etching treatment. A method for manufacturing a glass substrate of the present invention comprises chemical reinforcing in which the sheet-shaped glass material is chemically reinforced by means of an ion exchange treatment, and form processing in which the sheet-shaped glass material after the chemical reinforcing is cut by means of the etching treatment. In the chemical reinforcing, assuming that the plate thickness of the sheet-shaped glass material is t[μm], the thickness of the compressive stress layer of the sheet-shaped glass material is d[μm], the maximum compressive stress of the compressive stress layer is F[MPa], the integrated compressive stress value of the compressive stress layer is X[MPa·μm], the thickness of the tensile stress layer is t2[μm], and the average tensile stress value of the tensile stress layer is Tave[MPa], and the ion exchange treatment is performed so as to satisfy 7≤Tave＜50[MPa] when X=F×d, t2=t-2d, and Tave=X/t2 are satisfied.

HASHIMOTO KAZUAKI (JP)

PCT/JP2012/070842

February 28, 2013

August 16, 2012

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HOYA CORP (JP)
HASHIMOTO KAZUAKI (JP)

C03C21/00; C03B33/02; C03C3/083; C03C15/00; G09F9/00

JP2011057504A	2011-03-24
JP2009167086A	2009-07-30
JPS63248730A	1988-10-17
JP2012148957A	2012-08-09

IKEDA, Noriyasu et al. (JP)
Noriyasu Ikeda (JP)

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