Coated articles including anti-fingerprint and/or smudge-reducing coatings, and/or methods of making the same
View Patent ↗Certain example embodiments of this invention relate to coated articles including anti-fingerprint and/or smudge-reducing coatings, and/or methods of making the same. Oil from fingerprints and the like may easily transfer to the surface of an article. However, it has been found that in certain example embodiments, a reduced-smudge and reduced-glare effect on a glass substrate may be achieved by micro-engineering a glass surface's properties, such as surface morphology and/or roughness. In certain example embodiments, a thin film coating may be introduced to the glass surface in order to alter the contact angle of the article, or for other optical, electrical, mechanical, chemical and/or environmental purposes and/or durability. It has further advantageously been found that by altering the contact angle of the surface, the anti-smudge and anti-glare effects of the substrate may be further improved.
1. A method of making a smudge-resistant coated article, the method comprising:
roughening a major surface of a glass substrate; and
disposing a substantially conformal coating over the major surface of the substrate;
wherein an RMS roughness of the major surface of the coated article is less than or equal to about 0.8 microns,
wherein the RMS roughness of the roughened major surface of the substrate differs from the RMS roughness of the coated article by no more than about 0.2 microns; and
wherein the substantially conformal coating is hydrophobic, is an outermost layer of the substantially conformal coating so as to be exposed to ambient atmosphere, and is zirconium oxide based and is doped with Ag, Cu, Zn and/or Ti.
2. The method of claim 1 , wherein the major surface of the substrate is roughened via etching with an acid.
3. The method of claim 1 , wherein the major surface of the substrate is roughened with a laser.
4. The method of claim 1 , wherein the substantially conformal coating is deposited via ion beam assisted deposition.
5. The method of claim 1 , wherein the substantially conformal coating is deposited via high pressure chemical vapor deposition.
6. The method of claim 1 , wherein the substantially conformal coating is deposited via sol gel deposition.
7. The method of claim 1 , wherein the substantially conformal coating is super hydrophobic and has a contact angle of at least about 100 degrees, measured via a sessile drop of water.
8. The method of claim 7 , wherein the substantially conformal coating has a contact angle of at least about 120 degrees, measured via a sessile drop of water.
9. The method of claim 1 , wherein the RMS roughness of the major surface of the coated article is less than or equal to about 0.6 microns.