Glass ceramics, chemically strengthened glass, and semiconductor substrate
US12398065B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Apr 24, 2024 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Apr 24, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C10/0027
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A glass sheet, containing, in mass % on an oxide basis: 45-70% of SiO2, 1-15% of Al2O3, 10-25% of Li2O, 0-10% of Na2O, 0-5% of K2O, and 0-15% of ZrO2. K2O/R2O is 0.10 or less and ZrO2/R2O is 0.30 or more, where R2O is a total content of Li2O, Na2O, and K2O. The glass sheet has an average thermal expansion coefficient at 50° C.-350° C. of 90×10−7/° C.-140×10−7/° C. and a Young's modulus of 85 GPa or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.