Sheet of glass and device including said sheet of glass
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.
1. An electronic device, comprising a protective glass consisting of at least one non-reinforced glass sheet of lithium aluminosilicate type, the chemical composition of which comprises the following oxides in the ranges of weight contents defined below:
SiO 2
50-80%
Al 2 O 3
12-30%
Li 2 O
1-10%.
and the thickness of which is at most 2.0 mm.
2. The electronic device as claimed in claim 1 , wherein the thickness of is at most 1.5 mm.
3. The electronic device as claimed in claim 2 , wherein the thickness is at most 1.1 mm.
4. The electronic device as claimed in claim 1 , wherein a total weight content of alkali metal oxides other than lithium oxide is at most 2% by weight.
5. The electronic device as claimed in claim 4 , wherein the total weight content of alkali metal oxides other than lithium oxide is at most 1% by weight.
6. The electronic device as claimed in claim 1 , wherein the chemical composition comprises the following oxides in the ranges of weight contents defined below:
SiO 2
52-75%,
Al 2 O 3
15-27%,
Li 2 O
2-10%,
Na 2 O
0-1%,
K 2 O
0-5%,
CaO
0-0.5%,
ZnO
0-5%,
MgO
0-5%,
BaO
0-5%,
SrO
0-3%,
TiO 2
0-6%,
ZrO 2
0-3%,
P 2 O 5
0-8%.
7. The electronic device as claimed in claim 6 , wherein the chemical composition comprises the following oxides in the ranges of weight contents defined below:
SiO 2
65-70%,
Al 2 O 3
18-19.8%,
Li 2 O
2.5-3.8%,
Na 2 O
0-0.5%,
K 2 O
0-1%,
CaO
0-0.1%,
ZnO
1.2-2.8%,
MgO
0.55-1.5%,
BaO
0-1.4%,
SrO
0-1.4%,
TiO 2
0-2%,
ZrO 2
0-2.5%,
P 2 O 5
0-1%.
8. The electronic device as claimed in claim 1 , 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.
9. The electronic device as claimed in claim 8 , wherein the touch-sensitive detection device is a projected capacitive device.
10. The electronic device as claimed in claim 9 , wherein the touch-sensitive detection device comprises at least one network of conductive paths arranged as a plurality of rows and columns.
11. The electronic device as claimed in claim 10 , wherein the conductive paths consist of an electrically conductive transparent oxide.
12. The electronic device as claimed in claim 11 , wherein the electrically conductive transparent oxide is indium tin oxide.
13. The electronic device as claimed in claim 1 , 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.
14. The electronic device as claimed in claim 1 , wherein the protective glass consists of a single non-reinforced glass sheet.
15. The electronic device as claimed in claim 14 , wherein the single non-reinforced glass sheet includes a first main face and a second main face that is opposite the first main face, and wherein the first main face is in contact with the outside environment and the second main face is provided with a touch-sensitive detection device.
16. An electronic device comprising a protective glass, the protective glass consisting of at least one non-reinforced glass sheet, comprising SiO 2 , Al 2 O 3 and Li 2 O and having a thickness of at most 2.0 mm, wherein surface stresses formed on the glass sheet are lower than 50 MPa, wherein the chemical composition of the at least one non-reinforced glass sheet comprises the following oxides in the ranges of weight contents defined below:
SiO 2
50-80%
Al 2 O 3
12-30%
Li 2 O
1-10%.
17. An electronic device, comprising as protective glass at least one non-reinforced glass sheet of lithium aluminosilicate type, the chemical composition of which comprises the following oxides in the ranges of weight contents defined below:
SiO 2
50-80%
Al 2 O 3
12-30%
Li 2 O
1-10%,
and the thickness of which is at most 2.0 mm, said protective glass being devoid of any reinforced glass sheets.
18. The electronic device as claimed in claim 17 , wherein the protective glass consists of a single non-reinforced glass sheet.
19. An electronic device comprising a screen made of a protective glass, said protective glass consisting of at least one non-reinforced glass sheet of lithium aluminosilicate type, the chemical composition of which comprises the following oxides in the ranges of weight contents defined below:
SiO 2
50-80%
Al 2 O 3
12-30%
Li 2 O
1-10%,
and the thickness of which is at most 2.0 mm.
20. The electronic device as claimed in claim 19 , wherein the protective glass consists of a single non-reinforced glass sheet.