Method for texturing a glass surface

Patent metadata

Field	Value
Publication number	US-9302933-B2
Application number	US-201313900659-A
Country	US
Kind code	B2
Filing date	May 23, 2013
Priority date	Apr 20, 2011
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A method of making an article having a textured glass surface, including, for example:
attaching microencapsulated particles to a portion of a glass surface of the article; and contacting the glass surface having the attached microencapsulated particles with an etchant to form the textured surface.

A glass article prepared by the method including: at least one textured surface having excellent haze, distinctness-of-image, surface roughness, and uniformity properties, as defined herein.
A display system that incorporates the glass article, as defined herein, is also disclosed.

First claim

What is claimed is:

1. A method of making an article having a textured glass surface, comprising:
attaching microencapsulated particles having a core and a shell to a portion of a glass surface of the article comprising depositing the microencapsulated particles on the glass surface and then thermalizing the attached particles at a temperature at or above the melt temperature of the shell and below the melt temperature of the core; and
contacting the glass surface having the attached microencapsulated particles with an etchant to form the textured surface.

2. The method of claim 1 wherein the microencapsulated particles comprise a mononuclear particle, a polynuclear particle, a matrix particle, combinations thereof, or mixtures thereof.

3. The method of claim 1 wherein the microencapsulated particles, prior to attachment, comprise a mononuclear particle having a core and a shell, the core melts at a higher temperature and has a higher acid resistance compared to the shell.

4. The method of claim 3 wherein the core and shell can each independently comprise at least one of a polymer, a wax, or a combination thereof.

5. The method of claim 1 further comprising cooling the thermalized particulated surface.

6. The method of claim 1 wherein the microencapsulated particles further comprises at least one of a surface charge modifying component, a flow aid surface modifying component, or a combination thereof.

7. The method of claim 1 wherein the microencapsulated particles, after attachment, comprise a particle comprising a core and a shell, the thickness of the shell on the core being substantially diminished or extinguished, and redistributed after attachment to the glass surface and thermalization to: between the deposited particles; between the deposited particles and the surface; or a combination thereof.

8. The method of claim 1 wherein the attaching is accomplished electrostatically.

9. The method of claim 8 wherein electrostatically attaching the microencapsulated particles to a portion of a glass surface of the article comprises charging the microencapsulated particles, charging the glass surface, or a combination thereof.

10. The method of claim 1 wherein the glass surface comprises at least one of a soda lime silicate glass, an alkaline earth aluminosilicate glass, an alkali aluminosilicate glass, an alkali borosilicate glass, a boroaluminosilicate glass, or a combination thereof, the particles are comprised of at least one wax, polymer, or a combination thereof, and the etchant comprises at least one acid selected from HF, H 2 SO 4 , HCl, HNO 3 , H 3 PO 4 , or a combination thereof.

11. The method of claim 1 wherein contacting comprises exposing the glass surface having the attached particles to the etchant for about 1 second to about 30 minutes, and in the presence of a surfactant.

12. The method of claim 1 wherein the attached microencapsulated particles have a D 50 diameter of from about 1 to about 30 micrometers, a shell glass transition temperature (T g ) of from about 25 to about 200° C., and a core glass T g of from greater than the shell T g .

13. The method of claim 1 wherein the attached microencapsulated particles on the surface comprise from a mono-layer to a multi-layer of particles, the layer having a dry thickness of from about 1 to about 200 micrometers.

14. The method of claim 1 further comprising treating the resulting textured surface with a low-surface energy fluorosilane coating.

15. The method of claim 1 further comprising washing the resulting textured surface, chemically strengthening the textured surface, or a combination thereof.

16. The method of claim 1 further comprising, prior to etching, contacting at least another surface of the article with a removable, etch-resistant protective layer.

Assignees

• Corning Inc

Inventors

• Myers Timothy Edward
• Ravichandram Vasudha
• Wolcott Christine Coulter

Classifications

• C03C2218/115

  electro-enhanced deposition · CPC title

• C03C21/00

  Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface · CPC title

• C03C17/009

  Mixtures of organic and inorganic materials, e.g. ormosils and ormocers · CPC title

• C03C2217/77

  Coatings having a rough surface · CPC title

• C03C17/00

  Surface treatment of glass, not in the form of fibres or filaments, by coating (optical coatings of optical elements G02B1/10) · CPC title