Patent ID: 11912614
Assignee: CORNING INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC C  H | IPC B  C  H

Claim 0:
1. A glass-based article comprising:
opposing first and second surfaces defining a thickness (t) in millimeters (mm); and
a stress profile comprising:
a maximum compressive stress (CSmax) greater than or equal to 150 MPa;
a depth of compression (DOC) that is greater than or equal to 0.21t; and
a peak central tension (CT) in a tensile region that is greater than:
(E/68 GPa)*75 MPa*1 mm0.5/√(t),
where E is a Young's modulus value of a glass-based substrate having the same composition and structure as a center of the glass-based article,
wherein the stress profile further comprises a negative curvature region, wherein a second derivative of stress as a function of depth is negative,
wherein the CT is in the range of greater than or equal to 110 MPa and less than or equal to 220 MPa.