Glass and method for producing same

Patent metadata

Field	Value
Publication number	US-2016200624-A1
Application number	US-201615058468-A
Country	US
Kind code	A1
Filing date	Mar 2, 2016
Priority date	Sep 3, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

Provided is a glass, which has a phase separation structure including at least a first phase and a second phase, and is used for an OLED device, in which a content of SiO 2 in the first phase is higher than a content of SiO 2 in the second phase.

First claim

1 . A glass, which has a phase separation structure comprising at least a first phase and a second phase, and is used for an OLED device,
wherein a content of SiO 2 in the first phase is higher than a content of SiO 2 in the second phase.

2 . A glass, which has a phase separation structure comprising at least a first phase and a second phase, and is used for an OLED device,
wherein a content of B 2 O 3 in the second phase is higher than a content of B 2 O 3 in the first phase.

3 . The glass according to claim 1 or 2 , wherein the glass comprises as a glass composition, in terms of mass %, 30% to 75% of SiO 2 , 0.1% to 50% of B 2 O 3 , and 0% to 35% of Al 2 O 3 .

4 . The glass according to claim 1 or 2 , wherein the glass is substantially free of a rare metal oxide in a glass composition.

5 . The glass according to claim 1 or 2 , wherein the glass has a refractive index n d of more than 1.50.

6 . The glass according to claim 1 or 2 , wherein the glass has a flat sheet shape.

7 . The glass according to claim 1 or 2 , wherein the glass is formed by an overflow down-draw method.

8 . The glass according to claim 1 or 2 , wherein the glass is obtained without an additional heat treatment step.

9 . (canceled)

10 . The glass according to claim 1 or 2 , wherein the glass has a phase separation viscosity of 10 7.0 dPa·s or less.

11 . The glass according to claim 1 or 2 , wherein the glass has a haze value of from 1% to 100% at each wavelength of 435 nm, 546 nm, and 700 nm.

12 . The glass according to claim 1 or 2 , wherein the glass exhibits higher current efficiency than current efficiency of a non-phase separated glass having a comparable refractive index n d when incorporated into an OLED element.

13 . An OLED device, comprising the glass of claim 1 or 2 .

14 . A composite substrate, comprising a glass sheet and a substrate bonded to each other,
wherein the glass sheet comprises the glass of claim 1 or 2 .

15 . The composite substrate according to claim 14 , wherein the substrate comprises a glass substrate.

16 . The composite substrate according to claim 14 , wherein the substrate has a refractive index n d of more than 1.50.

17 . The composite substrate according to claim 14 , wherein the glass sheet and the substrate are bonded to each other through optical contact.

18 . (canceled)

19 . A method of producing a glass, the method comprising:
forming molten glass; and performing heat treatment on the resultant, to thereby obtain a glass which has a phase separation structure comprising at least a first phase and a second phase, and is used for an OLED device.

20 . The method of producing a glass according to claim 19 , wherein a content of SiO 2 in the first phase is higher than a content of SiO 2 in the second phase.

21 . The method of producing a glass according to claim 19 , wherein a content of B 2 O 3 in the second phase is higher than a content of B 2 O 3 in the first phase.

22 . The method of producing a glass according to claim 19 , wherein the glass comprises as a glass composition, in terms of mass %, 30% to 75% of SiO 2 , 0.1% to 50% of B 2 O 3 , and 0% to 35% of Al 2 O 3 .

23 . The method of producing a glass according to claim 22 , wherein the glass is substantially free of a rare metal oxide in a glass composition.

24 . The method of producing a glass according to claim 19 , wherein the glass has a refractive index n d of more than 1.50.

25 . The method of producing a glass according to claim 19 , wherein the forming comprises forming the molten glass into a flat sheet shape.

26 . The method of producing a glass according to claim 19 , wherein the forming is performed by an overflow down-draw method.

27 . (canceled)

28 . A glass, which is produced by the method of producing a glass of claim 22 .

29 . A glass, which has a property of being phase separated into at least a first phase and a second phase from a non-phase separated state through heat treatment, and is used for an OLED device.

30 . The glass according to claim 28 or 29 , wherein the glass has a haze value of from 5% to 100% at each wavelength of 435 nm, 546 nm, and 700 nm before the heat treatment.

31 . The glass according to claim 28 or 29 , wherein the glass has a haze value of from 0% to 80% at each wavelength of 435 nm, 546 nm, and 700 nm after the heat treatment.

Assignees

• Nippon Electric Glass Co

Inventors

• MUSHIAKE Atsushi
• Hosoda Yohei
• Murata Takashi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• C03B17/064

  by the overflow downdraw fusion process; Isopipes therefor · CPC title

• C03B17/02

  Forming {molten} glass coated with coloured layers; {Forming molten glass of different compositions or layers; Forming molten glass comprising reinforcements or inserts} · CPC title

• C03C2217/948

  Layers comprising indium tin oxide [ITO] · CPC title

• C03C3/064

  containing boron · CPC title