IP Library › Granted Patent US 7,153,797
Granted Patent B2
US 7,153,797 · App. 10/856,805 · Granted Dec 26, 2006

Alkali-free aluminoborosilicate glasses and uses thereof

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Quick Facts
Patent No.
US 7,153,797
App. No.
10/856,805
Granted
Dec 26, 2006
Kind
B2
Abstract

The invention relates to an alkali-free aluminoborosilicate glass having a coefficient of thermal expansion α 20/300 of between 2.8 and 3.9·10 −6 /K, which has the following composition (in % by weight, based on oxide) : SiO 2 >58–65, B 2 O 3 >6–11.5; Al 2 O 3 >14–20, MgO>3–6, CaO>4.5–10, SrO 0–<1.5, BaO>1.5–6, or SrO 0–<4, BaO>2.5–6, respectively, with SrO+BaO>3, ZnO 0–<2, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.

Claims (570)

1. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

Cl −

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + Cl − + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

2. An aluminoborosilicate glass according to claim 1 containing Sb 2 O 3 .

3. An alkali-free aluminoborosilicate glass according to claim 1 that contains As 2 O 3 or Sb 2 O 3 .

4. An alkali-free aluminoborosilicate glass according to claim 1 that contains

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

5. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–<4,

BaO

>2.5–6,

with SrO + BaO

  >3,

ZnO

  0–0.5,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

Cl −

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + Cl − + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

6. An aluminoborosilicate glass according to claim 5 containing Sb 2 O 3 .

7. An alkali-free aluminoborosilicate glass according to claim 5 that contains As 2 O 3 or Sb 2 O 3 .

8. An alkali-free aluminoborosilicate glass according to claim 5 that contains

SiO 2

>58–65,

B 2 O 3

>6–11.5,

Al 2 O 3

>14–20,

MgO

>3–6,

CaO

>4.5–10,

SrO

0–<4

BaO

>2.5–6,

with SrO + BaO

>3,

ZnO

0–0.5,

ZrO 2

0–2,

TiO 2

0–2,

with ZrO 2 + TiO 2

0–2,

As 2 O 3

0–1.5,

Sb 2 O 3

0–1.5,

CeO 2

0–1.5,

F −

0–1.5,

SO 4 2−

0–1.5, and

wherein As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

9. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

10. An alkali-free aluminoborosilicate glass according to claim 9 that contains As 2 O 3 or Sb 2 O 3 .

11. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

>58–65,

B 2 O 3

>6–11.5,

Al 2 O 3

>14–20,

MgO

>3–6,

CaO

>4.5–10,

SrO

0–<4

BaO

>2.5–6,

with SrO + BaO

>3,

ZnO

0–0.5,

ZrO 2

0–2,

TiO 2

0–2,

with ZrO 2 + TiO 2

0–2,

As 2 O 3

0–1.5,

Sb 2 O 3

0–1.5,

CeO 2

0–1.5,

F −

0–1.5,

SO 4 2−

0–1.5, and

wherein As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

12. An alkali-free aluminoborosilicate glass according to claim 11 that contains As 2 O 3 or Sb 2 O 3 .

13. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

Cl −

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + Cl − + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

14. An alkali-free aluminoborosilicate glass according to claim 13 that contains As 2 O 3 or Sb 2 O 3 .

15. An alkali-free aluminoborosilicate glass according to claim 13 that contains

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5, and

wherein As 2 O 3 + Sb 2 O 3 + SnO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

16. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

 22 3–6,

CaO

>4.5–10,

SrO

  0–<4,

BaO

>2.5–6,

with SrO + BaO

  >3,

ZnO

  0–0.5,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

Cl −

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + Cl − + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

17. An alkali-free aluminoborosilicate glass according to claim 16 that contains As 2 O 3 or Sb 2 O 3 .

18. An alkali-free aluminoborosilicate glass according to claim 16 that contains

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–<4,

BaO

>2.5–6,

with SrO + BaO

  >3,

ZnO

  0–0.5,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5, and

wherein As 2 O 3 + Sb 2 O 3 + SnO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides.

19. An alkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

>58–65,

B 2 O 3

>6–11.5,

Al 2 O 3

>14–20,

MgO

>3–6,

CaO

>4.5–10,

SrO

0–1.5,

BaO

>1.5–6,

with SrO + BaO

>3,

ZnO

0–<2,

ZrO 2

0–2,

TiO 2

0–2,

with ZrO 2 + TiO 2

0–2,

As 2 O 3

0–1.5,

Sb 2 O 3

0–1.5,

CeO 2

0–1.5,

Cl −

0–1.5,

F −

0–1.5,

SO 4 2−

0–1.5, and

wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + Cl − + F − + SO 4 2−

0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides, and wherein the glass does not contain at least one of ZrO 2 or TiO 2 .

20. An alkali-free aluminoborosilicate glass according to claim 19 that contains As 2 O 3 or Sb 2 O 3 .

21. An alkali-free aluminoborosilicate glass according to claim 19 that contains

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–1.5,

BaO

>1.5–6,

with SrO + BaO

  >3,

ZnO

  0–<2,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides, and wherein the glass does not contain at least one of ZrO 2 or TiO 2 .

22. An a lkali-free aluminoborosilicate glass consisting of by weight % based on oxide,

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–<4,

BaO

>2.5–6,

with SrO + BaO

  >3,

ZnO

  0–0.5,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

Cl −

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + Cl − + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides, and wherein the glass does not contain at least one of ZrO 2 or TiO 2 .

23. An alkali-free aluminoborosilicate glass according to claim 22 that contains As 2 O 3 or Sb 2 O 3 .

24. An alkali-free aluminoborosilicate glass according to claim 22 that contains

SiO 2

 >58–65,

B 2 O 3

  >6–11.5,

Al 2 O 3

 >14–20,

MgO

  >3–6,

CaO

>4.5–10,

SrO

  0–<4,

BaO

>2.5–6,

with SrO + BaO

  >3,

ZnO

  0–0.5,

ZrO 2

  0–2,

TiO 2

  0–2,

with ZrO 2 + TiO 2

  0–2,

As 2 O 3

  0–1.5,

Sb 2 O 3

  0–1.5,

CeO 2

  0–1.5,

F −

  0–1.5,

SO 4 2−

  0–1.5,

and wherein

As 2 O 3 + Sb 2 O 3 + SnO 2 + CeO 2 + F − + SO 4 2−

  0–1.5,

and an added amount of SnO 2 >0–1.5% SnO 2 ,

and essentially no alkali oxides, and wherein the glass does not contain at least one of ZrO 2 or TiO 2 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2005
From: SCHOTT GLAS
To: SCHOTT AG
Reel/Frame 015766/0926 →