GLASSES HAVING NON-FRANGIBLE STRESS PROFILES

摘要

A glass exhibiting non-frangible behavior in a region where substantially higher central tension is possible without reaching frangibility is provided. This region allows greater extension of the depth of compression in which fracture-causing flaws are arrested, without rendering the glass frangible despite the presence of high central tension region in the sample.

主权项

1. A glass having a compressive layer extending from a surface of the glass to a depth of compression DOC and under a maximum compressive stress CS, a central region having a maximum physical central tension CT at a center of the glass, the central region extending outward from the center to the depth of compression, and a thickness t in a range from about 0.3 mm to about 1.0 mm, wherein DOC≧0.08·t and CT−CS≦350 MPa.