Anti-glare substrates with low sparkle, DOI and transmission haze
US11009736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0294
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Embodiments of anti-glare substrates and articles including the same are disclosed. In one or more embodiments, the anti-glares substrate includes a textured surface with a plurality of features having an average cross-sectional dimension of about 30 micrometers or less. The substrate or article exhibits a transmission haze of 10% or less, a PPDr of about 7% or less or 6% or less, and a DOI of about 80 or less. Method for forming the anti-glare substrates are also disclosed and include etching a surface of a substrate with an etchant having low water solubility to provide an etched surface, and removing a portion of the etched surface. The method includes generating a plurality of insoluble crystals (e.g., any one or more of K2SiF6 and K3AlF6) on the surface while etching the surface. The etchant may include a potassium salt, an organic solvent and a fluoride containing acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.