Chemically strengthened glass with a film and method for measuring surface stress of chemically strengthened glass
US12006252B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Sep 8, 2021 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Sep 8, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2218/151
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a chemically strengthened glass with a film, including: a chemically strengthened glass having a pair of main surfaces opposing each other; and a film formed on at least one of the main surfaces of the chemically strengthened glass, in which the chemically strengthened glass has two or less interference fringes observed under stress measurement utilizing surface propagation light having a wavelength of 365 nm, and the film has a refractive index lower than a refractive index of the chemically strengthened glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.