Textured glass articles and methods of making the same
A textured glass article that includes: a glass substrate comprising a thickness, a primary surface and a bulk composition at the midpoint of the thickness; and a textured region defined by the primary surface and comprising a textured region composition. The textured region comprises a sparkle of 2% or less. Further, the bulk composition comprises about 40 mol % to 80 mol % silica and the textured region composition comprises at least about 40 mol % silica.
1. A textured glass article, comprising:
a glass substrate comprising a thickness, a primary surface and a bulk composition at the midpoint of the thickness; and
a textured region defined by the primary surface and comprising a textured region composition, the textured region including a plurality of exposed features, each of the plurality of exposed features having a peak and a valley,
wherein the textured region comprises a sparkle of 2% or less, and the plurality of exposed features has a surface roughness (R a ) from about 10 nm to 243 nm,
further wherein the bulk composition comprises about 40 mol % to 80 mol % silica and the textured region composition comprises at least about 40 mol % silica; and
further wherein the textured region composition comprises a higher amount of silica than the silica in the bulk composition.
2. The article according to claim 1 , wherein the textured region comprises a porous layer.
3. The article according to claim 1 , wherein the bulk composition is selected from the group consisting of an aluminosilicate glass, a borosilicate glass, and a phosphosilicate glass.
4. The article according to claim 1 , wherein the primary surface has a compressive stress of at least 350 MPa.
5. The article according to claim 1 , wherein the textured region composition comprises about 70 mol % silica and the bulk composition comprises about 50 mol % silica.
6. The article according to claim 1 , wherein the glass substrate further comprises a compressive stress region that extends from the primary surface to a selected depth.
7. The article according to claim 6 , further comprising an easy-to-clean (ETC) coating disposed over the textured region, the ETC coating comprising a fluorosilane.
8. The article according to claim 1 , wherein the article is characterized by a haze from greater than 0% to 100%.
9. A consumer electronic product, comprising:
a housing having a front surface, a back surface and side surfaces;
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing; and
a cover glass disposed over the display,
wherein at least one of a portion of the housing or the cover glass comprises the article of claim 1 .
10. A textured glass article, comprising:
a glass substrate comprising a thickness, a primary surface and a bulk composition at the midpoint of the thickness; and
a textured region defined by the primary surface and comprising a textured region composition,
wherein the textured region comprises a sparkle of 2% or less and a plurality of exposed features, each exposed feature having a peak and a valley, and the plurality of exposed features having an average maximum dimension of less than 5 microns in a plane defined by the primary surface, the maximum dimension being the greatest distance from one portion of a peak of the exposed feature to another portion of the peak of the exposed feature,
further wherein the bulk composition comprises about 40 mol % to 80 mol % silica and the textured region composition comprises at least about 40% silica; and
further wherein the textured region composition comprises a higher amount of silica than the silica in the bulk composition.
11. The article according to claim 10 , wherein the textured region further comprises a surface roughness (R a ) from about 10 nanometers to about 500 nanometers;
and wherein the article is characterized by a haze of at least 40%.
12. The article according to claim 10 , wherein the bulk composition is selected from the group consisting of an aluminosilicate glass, a borosilicate glass, and a phosphosilicate glass.
13. The article according to claim 10 , wherein textured region composition comprises about 70 mol % silica and the bulk composition comprises about 50 mol % silica.
14. The article according to claim 10 , wherein the primary surface has a compressive stress of at least 350 MPa.
15. The article according to claim 10 , wherein the glass substrate further comprises a compressive stress region that extends from the primary surface to a selected depth.
16. The article according to claim 15 , further comprising an easy-to-clean (ETC) coating disposed over the textured region, the ETC coating comprising a fluorosilane.
17. The article according to claim 16 , wherein the article is characterized by a haze from greater than 0% to 100%.
18. A consumer electronic product, comprising:
a housing having a front surface, a back surface and side surfaces;
electrical components provided at least partially within the housing, the electrical components including at least a controller, a memory, and a display, the display being provided at or adjacent the front surface of the housing; and
a cover glass disposed over the display,
wherein at least one of a portion of the housing or the cover glass comprises the article of claim 15 .
19. A textured glass article comprising:
a glass substrate comprising a thickness, a primary surface, and a bulk composition at a midpoint of the thickness, the bulk composition comprising 40 mol % to 80 mol % silica; and
a textured region bound by the primary surface, the textured region comprising (i) a textured region composition, (ii) a plurality of exposed features at the primary surface having an average maximum dimension of 1 micron or less in a plane defined by the primary surface, each of the plurality of exposed features having a peak and a valley, and the maximum dimension being the greatest distance from one portion of a peak of the exposed feature to another portion of the peak of the exposed feature, and (iii) a surface roughness (Ra) within a range of 10 nm to 500 nm,
wherein the textured glass article comprises a sparkle of 2% or less and a haze of 25% or less; and
further, wherein the textured region composition comprises a higher mole percentage of silica from the bulk composition.
20. The textured glass article of claim 19 , wherein
the primary surface has a compressive stress of at least 350 MPa.
21. The textured glass article of claim 19 , wherein
the textured region is porous.
22. The textured glass article of claim 19 , wherein
the surface roughness (R a ) is within a range of 4.28 nm to 88 nm; and
the haze is within a range of 6.17% to 20%.
23. The textured glass article of claim 19 , wherein
the textured region composition comprises about 70 mol % silica and the bulk composition comprises about 50 mol % silica.
24. The textured glass article of claim 19 , wherein the bulk composition further comprises alumina and at least one alkali metal.
25. The textured glass article of claim 19 further comprising:
an easy-to-clean coating disposed over the textured region, the easy-to-clean coating comprising at least one amphiphobic substance having fluorine termination groups.
26. A textured glass article comprising:
a glass substrate comprising a thickness, a primary surface, and a bulk composition at a midpoint of the thickness, the bulk composition comprising 40 mol % to 80 mol % silica; and
a textured region bound by the primary surface, the textured region comprising (i) a textured region composition, (ii) a plurality of exposed features at the primary surface having an average maximum dimension of 1 micron or less in a plane defined by the primary surface, each of the plurality of exposed features having a peak and a valley, and the maximum dimension being the greatest distance from one portion of a peak of the exposed feature to another portion of the peak of the exposed feature, and (iii) a surface roughness (Ra) within a range of 10 nm to 500 nm,
wherein the textured glass article comprises a sparkle of 2% or less and a haze of 25% or less; and
further wherein the textured region is porous.
27. The textured glass article of claim 26 , wherein the primary surface has a compressive stress of at least 350 MPa.
28. The textured glass article of claim 26 , wherein
the surface roughness (R a ) is within a range of 4.28 nm to 88 nm; and
the haze is within a range of 6.17% to 20%.
29. The textured glass article of claim 26 further comprising an easy-to-clean coating disposed over the textured region, the easy-to-clean coating comprising at least one amphiphobic substance having fluorine termination groups.