Cold forming of complexly curved glass articles

Patent metadata

Field	Value
Publication number	US-11780332-B2
Application number	US-202217723807-A
Country	US
Kind code	B2
Filing date	Apr 19, 2022
Priority date	Jul 18, 2017
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

Embodiments of this disclosure pertain to a vehicle interior system comprising a base having a base surface; and a glass article coupled to the surface, wherein the glass article comprises a first portion comprising a first elastically deformed surface forming a first concave shape with a first radius of curvature from about 20 mm to about 2000 mm, and a second elastically deformed surface directly opposite the first elastically deformed surface that forms a second convex shape, wherein the second elastically deformed surface has a surface compressive stress that is less than a compressive stress at the first elastically deformed surface, and a second portion adjacent the first portion, wherein the second portion is substantially planar portion or curved.

First claim

What is claimed is:

1. A glass article of a vehicle interior component comprising:
a base comprising a base surface; and
a glass sheet adhered to the base surface via an adhesive layer such that the glass sheet conforms to the base surface and is cold-formed, wherein the glass sheet comprises a first major surface and a second major surface disposed opposite the first major surface and wherein the second major surface is adhered to the base surface, wherein, as a result of being cold-formed, the first major surface comprises:
a first concave region that is curved at a first radius of curvature; and
a second concave region that is curved at a second radius of curvature that is different from the first radius of curvature; and

at least one of an anti-glare coating, an anti-reflective coating, an oleophobic coating, an anti-scratch coating, or an ink coating.

2. The glass article of claim 1 , wherein:
the first concave region curves around a first bend axis;
the second concave region curves around a second bend axis; and
the first bend axis is not parallel with the second bend axis.

3. The glass article of claim 2 , wherein a difference between the first radius of curvature and the second radius of curvature is greater than or equal to 10 mm.

4. The glass article of claim 1 , wherein:
the first radius of curvature is greater than or equal to 20 mm and less than or equal to 2000 mm, and
the second radius of curvature is greater than or equal to 20 mm and less than or equal to 2000 mm.

5. The glass article of claim 1 , wherein:
the first concave region is in a first portion of the glass sheet,
the second concave region is in a second portion of the glass sheet,
the first portion and the second portion extend in different directions relative to one another, and
the glass sheet comprises a peripheral shape selected from the group consisting of an L-shape, a T-shape, an I-shape, an H-shape, a V-shape, and an X-shape.

6. The glass article of claim 5 , wherein in at least one of the first portion and the second portion, the first major surface comprises a convex portion such that, in the at least one of the first portion and the second portion, the first major surface is S-shaped.

7. The glass article of claim 6 , wherein the first portion comprises the convex portion and wherein the convex portion is disposed between the first concave portion and the second concave portion.

8. The glass article of claim 7 , wherein the first concave portion and the convex portion in the first portion of the glass sheet comprise parallel bend axes.

9. The glass article of claim 7 , wherein the first portion is disposed adjacent to the second portion.

10. The glass article of claim 7 , further comprising a substantially flat portion extending between the first portion and the second portion, wherein, within the substantially flat portion, the first major surface is either flat or curved at a radius of curvature of greater than 1000 mm.

11. The glass article of claim 1 , wherein the glass sheet comprises a maximum thickness of 1.5 mm or less.

12. The glass article according to claim 1 , wherein, as a result of being cold-formed:
the second major surface comprises a first convex region opposite the first concave region and a second convex region opposite the second concave region,
a first compressive stress at the first major surface in the first concave region is greater than a second compressive stress at the second major surface in the first convex region, and
a third compressive stress at the first major surface in the second concave region is greater than a fourth compressive stress at the second major surface in the second convex region.

13. The glass article of claim 1 , wherein the glass sheet comprises an ion exchangeable alkali aluminosilicate glass composition or alkali aluminoborosilicate glass composition.

14. A vehicle interior system comprising:
a base comprising a base surface;
a glass sheet adhered to the base surface via an adhesive layer such that the glass sheet conforms to the base surface and is cold-formed, wherein the glass sheet comprises a first major surface and a second major surface disposed opposite the first major surface and wherein the second major surface is adhered to the base surface, wherein, as a result of being cold-formed, the first major surface comprises:
a first concave region that is curved at a first radius of curvature; and
a second concave region that is curved at a second radius of curvature that is different from the first radius of curvature; and

a display coupled to the second major surface of the glass sheet.

15. The vehicle interior system of claim 14 , wherein the display is coupled to the second major surface opposite one of the first concave region and the second concave region.

16. The vehicle interior system of claim 15 , wherein the display is curved at a display radius of curvature that is within 10% of the first radius of curvature or the second radius of curvature.

17. The vehicle interior system of claim 14 , further comprising an air gap between the glass sheet and the display.

18. The vehicle interior system of claim 14 , wherein the base comprises one of a dashboard, a center console, a door panel, a headrest, an armrest, a seat back, a floor board, a pillar, and a steering wheel.

19. The glass article of claim 14 , wherein the glass sheet comprises a maximum thickness of 1.5 mm or less.

20. The glass article of claim 14 , wherein at least one of the first major surface and the second major surface comprises one or more surface treatments selected from a group consisting of an easy-to-clean surface, an anti-glare surface, an anti-reflective surface, and a decorative surface.

Assignees

• Corning Inc

Inventors

• Couillard James Gregory
• Kumar Atul
• Sun Yawei
• Weeks Wendell Porter

Classifications

• C03B23/0235 Primary

  involving applying local or additional heating, cooling or insulating means · CPC title

• B60K2360/774

  on or in the centre console · CPC title

• B60K2360/1434

  Touch panels · CPC title

• B60K2360/339

  Translucent dashboard skins · CPC title

• B60N2/75

  Arm-rests · CPC title