Corning Incorporated
Strengthened glass articles having improved survivability

Abstract:

Embodiments are directed to strengthened glass articles comprising a thickness t.ltoreq.1 mm (1000 .mu.m), an inner region under a central tension CT (in MPa), and at least one compressive stress layer adjacent the inner region and extending within the strengthened glass article from a surface of the strengthened glass article to a depth of layer DOL (in .mu.m), wherein the strengthened glass article is under a compressive stress at the surface CS.sub.s (in MPa), wherein the strengthened glass article is an alkali aluminosilicate glass article comprising 0-5 mol % Li.sub.2O, and at least 3 mol % Al.sub.2O.sub.3, and wherein the DOL.gtoreq.70 .mu.m, and a CS.sub.s/DOL ratio.gtoreq.2.5 MPa/.mu.m.