FOLDABLE SUBSTRATES, FOLDABLE APPARATUS, AND METHODS OF MAKING

Abstract: in aspects, a concentration of lithium oxide at a surface is greater than a concentration of lithium oxide at a midpoint by from about 0.2 mol % to about 2 mol %. in aspects, a concentration of lithium oxide at a surface is from about 0.2 mol % to about 2 mol %. in aspects, a total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface is from about 5 mol % to about 15 mol %. in aspects, a ratio of the total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface to a concentration of lithium oxide at the surface is from about 1 to about 20. methods include immersing a substrate in a molten salt bath at 380� c. or more for from about 1 minute to about 10 minutes or for from about 3 minutes to about 2 hours.

Inventor(s): Gabriel Pierce Agnello, Joy Banerjee, Vitor Marino Schneider, Ian David Tracy

CPC Classification: C03C21/002 (Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface)

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