Float glass for display substrate and method for producing it

Details Float glass for display substrate and method for producing it Float glass for display substrate and method for producing it

2011-02-22

2011-02-22

Brunsman, David M. (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S068000, C501S069000, C501S072000

Reexamination Certificate

active

07892999

ABSTRACT:
A float glass for a display substrate, characterized in that its composition consists essentially of, as represented by mass % based on oxide, from 52 to 62% of SiO2, from 5 to 15% of Al2O3, from more than 0% to 9% of MgO, from 3 to 12% of CaO, from 9 to 18% of SrO, from 0 to 13% of BaO, from 25 to 30% of MgO+CaO+SrO+BaO, from 6 to 14% of Na2O+K2O+Li2O, from 0 to 6% of ZrO2and from 0 to 1% of SO3, the temperature of glass melt corresponding to the viscosity of 102dPa·s is at most 1,520° C., the temperature of glass melt corresponding to the viscosity of 104dPa·s is at most 1,120° C., the glass transition temperature is at least 610° C., and the specific gravity is at most 2.9.

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U.S. Appl. No. 12/437,739, filed May 8, 2009, Nagai, et al.

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