High strength ultrathin glass and method of making the same
US11420898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2018 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Jan 3, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2204/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An ultrathin glass article has a thickness of less than or equal to 0.5 mm. The glass has a low TTV and a large threshold diffusivity. The glass has a working point T4 of more than 1100° C. and a linear thermal expansion coefficient CTE of more than 6*10-6/° C. in the temperature range between 25° C. and 300° C. A method for producing the article as well as the use of the article is also provided. The glass article can be chemically strengthened and forms surface compressive stress layers on surfaces and center tension layer in the center. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance which makes it easier to handle for processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.