Methods and structures for reducing biaxial bending and/or twisting of flexible glass substrates

Patent metadata

Field	Value
Publication number	US-2016009593-A1
Application number	US-201414770014-A
Country	US
Kind code	A1
Filing date	Feb 24, 2014
Priority date	Feb 27, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

A flexible glass structure includes a flexible glass substrate having a thickness of no more than about 0.3 mm. A stiffening layer is coupled to a surface of the flexible glass substrate. The stiffening layer includes at least one stiffening element extending along the surface of the flexible glass substrate in a running direction having a Young's modulus selected to provide a preferred bending axis of the flexible glass substrate in a direction substantially parallel to the running direction of the stiffening element.

First claim

1 . A flexible glass structure, comprising:
a flexible glass substrate having a thickness of ≦0.3 mm; and a stiffening layer coupled to a surface of the flexible glass substrate, the stiffening layer comprising at least one stiffening element extending along the surface of the flexible glass substrate in a running direction having a Young's modulus selected to provide a preferred bending axis of the flexible glass substrate in a direction substantially parallel to the running direction of the stiffening element.

2 . The flexible glass structure of claim 1 , wherein the stiffening layer further comprises a coating material.

3 . The flexible glass structure of claim 2 , wherein the stiffening element is encapsulated in the coating material.

4 . The flexible glass structure of claim 2 , wherein the stiffening element has a Young's modulus greater than a Young's modulus of the coating material.

5 . The flexible glass structure of claim 4 , wherein the stiffening element has a Young's modulus of ≧10 GPa and the coating material has a Young's modulus of ≦1 GPa.

6 . The flexible glass structure of claim 4 , wherein the stiffening element has a Young's modulus of ≧40 GPa and the coating material has a Young's modulus of ≦20 GPa.

7 . The flexible glass structure of claim 1 , wherein the stiffening element comprises a shear thickening material.

8 . The flexible glass substrate of claim 1 , wherein the stiffening element comprises a glass fiber or a metal wire.

9 . The flexible glass substrate of claim 1 comprising multiple stiffening elements, the multiple stiffening elements being spaced-apart from and parallel to each other.

10 . The flexible glass substrate of claim 1 , the stiffening layer further comprising:
a second stiffening element extending along the surface of the flexible glass substrate in a second direction that is different than the running direction; wherein the first and second stiffening elements extend in the running and second directions, respectively, and have respective Young's moduli selected to inhibit twisting or bi-axial bending of the flexible glass substrate.

11 . A method of controlling bending of a flexible glass structure, the method comprising:
arranging at least one stiffening element adjacent to a surface of a flexible glass substrate along a running direction; and coupling the at least one stiffening element to the surface along the running direction, the at least one stiffening element having a Young's modulus selected to provide a preferred bending axis of the flexible glass substrate in a direction substantially parallel to the running direction of the at least one stiffening element.

12 . The method of claim 11 , wherein the step of coupling includes encapsulating the at least one stiffening element in a coating material that bonds to the surface of the flexible glass substrate.

13 . The method of claim 11 , wherein the at least one stiffening element comprises a shear thickening material.

14 . The method of claim 11 , wherein the at least one stiffening element comprises a metal wire or an optical fiber.

Assignees

• Corning Inc

Inventors

• Brychell Joseph Gerard
• Garner Sean Matthew
• Gerber Kurt Edward
• Gopalakrishnan Karthik

Classifications

• B32B3/085

  spaced apart pieces on the surface of a layer · CPC title

• E04C2/54

  Slab-like translucent elements (floors for transmitting light E04B5/46; translucent or open-work ceilings E04B9/32, E04B9/34; translucent roof coverings E04D3/06, E04D3/28) · CPC title

• B32B2457/206

  Organic displays, e.g. OLED · CPC title

• C03C27/00

  Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing (C03C17/00 takes precedence; layered structures comprising at least one glass sheet B32B17/00; wired glass C03B; joining glass to ceramics C04) · CPC title

• B32B17/06 Primary

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title