Processes of making glass with textured surface and 3-D shape

Patent metadata

Field	Value
Publication number	US-11208346-B2
Application number	US-201715813882-A
Country	US
Kind code	B2
Filing date	Nov 15, 2017
Priority date	Nov 15, 2016
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A process for forming a textured 3-D glass-based substrate includes texturing a first surface of a glass-based substrate and shaping the glass-based substrate into a three-dimensional shape. The surface profile of the substrate is non-planar. In some embodiments, texturing the first surface of the glass-based substrate provides the first surface with an average roughness of 10 nm to 2000 nm.

First claim

What is claimed is:

1. A process, comprising:
texturing a first surface of a glass-based substrate to create a textured first surface; and
after texturing the first surface, shaping the glass-based substrate having the textured first surface into a three-dimensional shape,
wherein the textured first surface faces a mold surface during shaping and wherein a surface profile of the substrate is non-planar after shaping, and
wherein texturing the first surface of the glass-based substrate provides the first surface with an average surface roughness (Ra) of 10 nm to 2000 nm.

2. The process of claim 1 , wherein texturing the first surface of the glass-based substrate provides the first surface with an average surface roughness (Ra) of 200 nm to 2000 nm.

3. The process of claim 1 , further comprising tempering the glass-based substrate after texturing and shaping the glass-based substrate.

4. The process of claim 3 , wherein the tempering is chemical or thermal tempering.

5. The process of claim 1 , wherein texturing the first surface of the glass-based substrate comprises etching the first surface of the glass-based substrate.

6. The process of claim 1 , wherein shaping the glass-based substrate into the three-dimensional shape comprises vacuum-forming the glass-based substrate on a mold.

7. The process of claim 6 , wherein vacuum-forming the glass-based substrate on the mold comprises applying a vacuum pressure on the textured first surface.

8. The process of claim 1 , further comprising cutting the glass-based substrate to provide one or more substrate portions having an area smaller than the glass-based substrate.

9. The process of claim 8 , wherein the cutting is performed after texturing the first surface of the glass-based substrate and before shaping the glass-based substrate into the three-dimensional shape.

10. The process of claim 1 , wherein the three-dimensional shape comprises a curve in at least one direction.

11. The process of claim 1 , wherein when the non-planar glass-based substrate is at rest on a flat surface, at least a portion of the glass-based substrate is elevated above the flat surface by a distance of at least 1 times the maximum thickness of the glass-based substrate.

12. The process of claim 1 , further comprising texturing a second surface of the glass-based substrate.

13. The process of claim 1 , wherein the glass-based substrate is glass.

14. The process of claim 1 , wherein the glass-based substrate is glass-ceramic.

15. The process of claim 1 , wherein texturing the first surface of the glass-based substrate comprises etching the first surface of the glass-based substrate and polishing the first surface of the glass-based substrate.

16. The process of claim 1 , wherein a viscosity of the glass-based substrate during shaping is in a range of 10 7 Poise and 10 11 Poise.

17. The process of claim 1 , wherein a viscosity of the glass-based substrate during shaping is in a range of 10 8 Poise to 10 10 Poise.

18. The process of claim 1 , wherein the mold surface comprises one or more vacuum holes, and wherein shaping the glass-based substrate comprises applying a vacuum pressure on the textured first surface to vacuum-form the glass-based substrate on the mold surface.

19. A process, comprising:
texturing a first surface of a glass-based substrate to create a textured first surface, wherein texturing the first surface increases the average surface roughness of the first surface; and
after texturing the first surface, shaping the glass-based substrate having the textured first surface into a three-dimensional shape,
wherein the textured first surface faces a mold surface during shaping and wherein a surface profile of the substrate is non-planar after shaping, and
wherein shaping the glass-based substrate into the non-planar shape comprises vacuum-forming the glass-based substrate on a mold.

20. The process of claim 19 , wherein vacuum-forming the glass-based substrate on the mold comprises applying a vacuum pressure on the textured first surface.

21. The process of claim 19 , wherein texturing the first surface of the glass-based substrate comprises etching the first surface of the glass-based substrate.

Assignees

• Corning Inc

Inventors

• Hall Jill Marie
• Jin Yuhui
• Kiczenski Timothy James
• Ridge John Richard
• Ukrainczyk Ljerka

Classifications

• Y02P40/57

  Improving the yield, e-g- reduction of reject rates · CPC title

• C03B27/00

  Tempering {or quenching} glass products · CPC title

• C03B23/02 Primary

  Re-forming glass sheets · CPC title

• C03B23/0357

  by suction without blowing, e.g. with vacuum or by venturi effect · CPC title

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title