Highly refractive thin glasses

Patent metadata

Field	Value
Publication number	US-9701568-B2
Application number	US-201414217787-A
Country	US
Kind code	B2
Filing date	Mar 18, 2014
Priority date	Mar 20, 2013
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Thin glasses having high refractive index (n d ), a layer composite assembly made from these thin glasses, a method for the production of the thin glasses, and the uses of the thin glasses are provided. The thin glasses are processed in an in line manufacturing process and have the optical properties of a classical optical glass. The thin glasses are highly transparent, crystallization-resistant, chemically resistant and highly refractive. The viscosity/temperature behavior of the thin glasses is adjusted to the manufacturing process via in line flat glass methods.

First claim

What is claimed is:

1. A thin glass having a thickness of less than 2 mm and comprising at least one fire-polished surface, wherein the at least one fire-polished surface has a root mean square roughness of at most 5 nm, the glass comprising:
a refractive index of higher than 1.60; and
components in % by mol of

from
to

SiO 2
30
60,

B 2 O 3
0
20,

ZnO
10
25,

BaO
10
25; and

a molar ratio of quantities of BaO to ZnO that is lower than 1.5.

2. The thin glass according to claim 1 , wherein B 2 O 3 is present at a content of at least 6% by mol.

3. The thin glass according to claim 1 , wherein the components further comprise in % by mol:

from
To

Al 2 O 3
0
 6,

CaO
0
10,

SrO
0
11,

MgO
0
 3,

Na 2 O
0
10,

K 2 O
0
 8,

Li 2 O
0
 2,

TiO 2
0
 9,

ZrO 2
0
 5,

Nb 2 O 5
0
 3,

La 2 O 3
0
10, and

Y 2 O 3
0
 7.

4. The thin glass according to claim 3 , wherein B 2 O 3 is present at a content of at least 6% by mol.

5. The thin glass according to claim 3 , further comprising a sum of the contents of BaO, SrO, CaO, MgO, and ZnO that is at least 30 and at most 50% by mol.

6. The thin glass according to claim 3 , further comprising a sum of the contents of TiO 2 , ZrO 2 , Y 2 O 3 , La 2 O 3 , and Nb 2 O 5 that is at least 2.5 and at most 12% by mol.

7. A layer composite assembly, comprising the thin glass according to claim 1 and at least one semiconductor layer.

8. An OLED, comprising the thin glass according to claim 1 and at least one semiconductor layer.

9. A substrate or superstrate, comprising the thin glass according to claim 1 .

10. A thin glass having a thickness of less than 2 mm, the glass comprising:
a refractive index of higher than 1.60; and
components in % by mol:

from
To

SiO 2
43.5
49.5,

B 2 O 3
6.0
 9.0,

ZnO
15
17,

BaO
14.5
17.5,

CaO
4.5
10,

TiO 2
2
 6,

ZrO 2
0.5
 4, and

Nb 2 O 5
0.2
 1.5.

a molar ratio of quantities of BaO to ZnO that is lower than 1.5.

11. A thin glass having a thickness of less than 2 mm and comprising at least one fire-polished surface, wherein the at least one fire-polished surface has a root mean square roughness of at most 5 nm, the glass comprising:
a refractive index of higher than 1.60; and
components in % by mol of

From
to

SiO 2
30
60,

Assignees

• Schott Ag

Inventors

• Mennemann Karl
• Kolberg Uwe
• Wegener Holger
• Gierke Monika
• Woelfel Ute
• Fechner Joerg

Classifications

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title

• C03C3/078

  containing an oxide of a divalent metal, e.g. an oxide of zinc · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• C03C3/068

  containing rare earths · CPC title

• C03C3/066

  containing zinc · CPC title