Anti-glare glass article and display system
A glass article including: at least one anti-glare surface having haze, distinctness-of-image, surface roughness, and uniformity properties, as defined herein. A method of making the article having an anti-glare surface includes, for example, forming a protective film on selected portions of at least one surface of the article; contacting the at least one surface with a liquid etchant; and removing the protective film from the surface of the article to form the anti-glare surface. A display system that incorporates the glass article, as defined herein, is also disclosed.
1. A glass article comprising:
at least one anti-glare surface having:
a haze of less than about 25;
a distinctness-of-image (DOI 20°) of about 25 to about 90; and
a surface roughness (Ra) of about 100 to about 300 nm.
2. The glass article of claim 1 wherein the anti-glare surface is a protective cover glass for a display device.
3. The glass article of claim 1 wherein the anti-glare surface comprises a distribution of topographic features having an average diameter of about 1 to about 50 micrometers.
4. A display system comprising:
a glass panel having at least one roughened surface prepared by the method comprising:
forming a protective porous film on selected portions of at least one surface of the article wherein forming the protective porous film on selected portions of at least one surface comprises selective spray deposition, masked spray deposition, ink-jet deposition, or a combination thereof;
contacting the at least one surface having the protective porous film with a liquid etchant; and
removing the protective porous film from the surface of the article to form the antiglare surface, wherein removing the protective film from the surface of the article comprises at least one of: contacting the film with a dissolving liquid, heating the film to liquefy and drain, or a combination thereof,
the glass panel including:
a haze of less than about 25;
a distinctness-of-image (DOI 20°) of about 25 to about 90; and
a surface roughness (Ra) of about 100 to about 300 nm, which properties provide an anti-glare surface; and
a pixelated image-display panel adjacent to the glass panel.
5. The system of claim 4 wherein the uniformity of the glass panel surface is excellent having an absence of detectable defects.