Patent ID: 11963320
Assignee: CORNING INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. A glass-based article comprising:
a center plane, wherein the center plane comprises from about 2 to about 20 mol-% Li2O;
a maximum central tension of 50 MPa or more, and
a stress profile extending along the thickness (t) according to a mathematical formula that is a function of the thickness,
wherein all points of the mathematical formula for stress profile in a first thickness range from about 0·t up to 0.020·t and greater than 0.98·t comprises a tangent with a slope of from about −200 MPa/micrometer to about −25 MPa/micrometer or about 25 MPa/micrometer to about 200 MPa/micrometer,
wherein a mathematical formula for stress profile along the span of a second thickness range, extending from 0.035·t to less than 0.965·t, forms a power-law function having a power exponent, wherein the power exponent is from about 1.2 to about 3.4,
wherein the stress profile comprises a depth of compression ranging from about 0.05·t to 0.25·t.