Supporting glass substrate
US11021389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L23/15
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: α=2·Σ{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate, Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.