Corning Incorporated

Brandon Allen Bazemore

Charlene Marie Smith

Matthew John Dejneka

Yuhui Jin

Jun Hou

Ljerka Ukrainczyk

Alexander Mikhailovich Streltsov

Jiangwei Feng

Laurent Joubaud

Matthew Wade Fenton

Daniel Ralph Harvey

Tammy Lynn Petriwsky

Xavier Gerard Lafosse

Diane Kimberlie Guilfoyle

Eungsik Park

Jeffrey Alan Decker

Jeffrey A Decker

Xavier Lafosse

A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 μm to 20 μm and a density of features of the same type is in a range from 9,000 to 25,000 features/mm, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.

Method for controlling surface features on glass-ceramic articles and articles formed therefrom

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 KSiFand KAlF) on the surface while etching the surface. The etchant may include a potassium salt, an organic solvent and a fluoride containing acid.

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

A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 &#x3bc;m to 20 &#x3bc;m and a density of features of the same type is in a range from 9,000 to 25,000 features/mm, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.

Methods of forming a glass article are disclosed. In one embodiment, a method of forming a glass article includes translating a pulsed laser beam on a glass substrate sheet to form a laser damage region between a first surface and a second surface of the glass substrate sheet. The method further includes applying an etchant solution to the glass substrate sheet to remove a portion of the glass substrate sheet about the laser damage region. The method may further include strengthening the glass substrate sheet by an ion-exchange strengthening process, and coating the glass substrate sheet with an acid-resistant coating. Also disclosed are methods where the laser damage region has an initial geometry that changes to a desired geometry following the reforming of the glass substrate sheet such that the initial geometry of the laser damage region compensates for the bending of the glass substrate sheet.

Methods of fabricating glass articles by laser damage and etching

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Corning, NY, United States of America

Brandon Allen Bazemore