Thin thermally and chemically strengthened glass-based articles

US9957190B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• John Philip Finkeldey · Westfield, US
• Linda Gaskill · Corning, US
• Timothy Michael Gross · Waverly, US
• Peter Joseph Lezzi · Corning, US
• Richard Orr Maschmeyer · Corning, US
• Charlene Marie Smith · Corning, US
• John Christopher Thomas · Elmira, US
• Kevin Lee Wasson · Elmira, US

Key dates

• Filing date: Jan 27, 2017
• Grant date: May 1, 2018
• Expiry date: Jan 27, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17·t or greater. In one or more embodiments, the first surface is flat to 100 μm total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.