SHEET OF GLASS AND DEVICE INCLUDING SAID SHEET OF GLASS

• US 20150251947A1
• Filed: 09/20/2013
• Published: 09/10/2015
• Est. Priority Date: 09/21/2012
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Gy, Ren, Sellier, Julien, Lestrigant, Claire
• Granted Patent: US 10,071,930 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C03C 2217/948 Layers comprising indium tin oxide [ITO]
• CPC Class Codes: C03C 3/085 containing an oxide of a divalent metal
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A non-reinforced glass sheet, the chemical composition of which is of lithium aluminosilicate type, has a thickness of at most 2.0 mm. Furthermore, an electronic device, in particular a pocket or portable electronic device, includes, as protective glass, the non-reinforced glass sheet.

Claims

1. A non-reinforced glass sheet, the chemical composition of which is of lithium aluminosilicate type, and the thickness of which is at most 2.0 mm.

2. The glass sheet as claimed in claim 1, the thickness of which is at most 1.5 mm.

3. The glass sheet as claimed in claim 1, wherein the chemical composition comprises the following oxides in the ranges of weight contents defined below:

4. The glass sheet as claimed in claim 3, wherein a total weight content of alkali metal oxides other than lithium oxide is at most 2% by weight.

5. The glass sheet as claimed in claim 3, wherein the chemical composition comprises the following oxides in the ranges of weight contents defined below:

6. The glass sheet as claimed in claim 1, provided on one of its faces with a touch-sensitive detection device.

7. The glass sheet as claimed in claim 6, wherein the touch-sensitive detection device is a projected capacitive device.

8. The glass sheet as claimed in claim 7, wherein the touch-sensitive detection device comprises at least one network of conductive paths arranged as a plurality of rows and columns.

9. The glass sheet as claimed in claim 8, wherein the conductive paths consist of an electrically conductive transparent oxide.

10. A protective glass for an electronic device obtained from a glass sheet as claimed in claim 1.

11. A process for manufacturing a protective glass as claimed in claim 10, comprising forming the glass sheet, providing said glass sheet, at least one of the dimensions of which is at least 1 m, with a touch-sensitive detection device, and then cutting the glass sheet.

12. A method comprising utilizing a glass sheet as claimed in claim 1 as protective glass for an electronic device.

13. An electronic device, comprising as protective glass at least one glass sheet as claimed in claim 1.

14. The electronic device as claimed in claim 13, wherein the glass sheet is provided on one of its faces with a touch-sensitive detection device, positioned on a lower face of said glass sheet.

15. The glass sheet as claimed in claim 2, wherein the thickness is at most 1.1 mm.

16. The glass sheet as claimed in claim 4, wherein the total weight content of alkali metal oxides other than lithium oxide is at most 1% by weight.

17. The glass sheet as claimed in claim 5, wherein the chemical composition comprises the following oxides in the ranges of weight contents defined below:

18. The glass sheet as claimed in claim 9, wherein the electrically conductive transparent oxide is indium tin oxide.

19. The electronic device as claimed in claim 13, wherein the electronic device is a pocket or portable electronic device, a smartphone, a personal digital assistant, a digital camera, a multimedia player, a computer, a tablet, a television, an automated ticket machine, an automated teller machine, an automated checkout machine, a screen integrated into a furniture, an electrical good or a vehicle instrument panel.

20. A non-reinforced glass sheet, comprising SiO₂, Al₂O₃ and Li₂O and having a thickness of at most 2.0 mm, wherein surface stresses formed on the glass sheet are lower than 50 MPa.