Corning Incorporated
Anti-glare substrates with low sparkle, DOI and transmission haze

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 K.sub.2SiF.sub.6 and K.sub.3AlF.sub.6) on the surface while etching the surface. The etchant may include a potassium salt, an organic solvent and a fluoride containing acid.