Patent ID: 11964545
Assignee: CORNING INCORPORATED
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A laminate comprising:
a first complexly-curved glass substrate comprising a first surface, a second surface opposite the first surface, and a first thickness therebetween;
a second complexly-curved glass substrate comprising a third surface, a fourth surface opposite the third surface, and a second thickness therebetween; and
a polymer interlayer affixed to the second surface and the third surface, wherein:
the laminate has a thickness in a range from 1.8 mm to 5.85 mm,
the second substrate is formed of an aluminosilicate glass composition,
the first complexly-curved glass substrate is hot-formed and curved along at least a first axis with a first radius of curvature of 5 m or less and a second axis with a second radius of curvature of 5 m or less,
the second complexly-curved glass substrate is cold-formed against the first complexly-curved glass substrate via the polymer interlayer at a temperature that is 200° or more below a softening point of the second complexly-curved glass substrate such that a peripheral portion of the second complexly-curved substrate exerts a compressive force against the polymer interlayer and a central portion of the second complexly-curved substrate exerts a tensile force against the polymer interlayer, and
one of:
the second complexly-curved glass substrate is chemically strengthened and comprises a surface compressive stress of 300 MPa or greater, and
the second complexly-curved glass substrate is thermally strengthened and comprises a fictive temperature of at least 500° C.