CPC C03C 21/002 (2013.01) [C03C 3/097 (2013.01)] | 19 Claims |
1. A glass article, the glass article having a thickness t and a compressive region having a compressive stress CSs in a range from 400 MPa to 1200 MPa at a surface of the glass article, wherein the compressive region extends from the surface to a depth of compression DOC, wherein 0.1·t≤DOC≤0.25·t, and has a compressive stress profile, the compressive stress profile comprising:
a. a first portion b extending from the surface to a depth db below the surface and having a slope mb; and
b. a second substantially linear portion c extending from dc to the depth of compression DOC and having a slope mc, wherein |mb|>>|mc|.
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