Thin glass substrate, in particular a borosilicate glass thin glass substrate, method and apparatus for its production

US11745459B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Armin Vogl · Jena, DE
• Thomas Schmiady · Jena, DE
• Thilo Zachau · Bürstadt, DE
• Michael Meister · Mainz, DE
• Jochen Alkemper · Klein-Winternheim, DE
• Christian Kunert · Wiesbaden, DE
• Lutz Klippe · Wiesbaden, DE
• Rüdiger Dietrich · Jena, DE

Key dates

• Filing date: Apr 17, 2020
• Grant date: Sep 5, 2023
• Expiry date: Apr 17, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24777
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.