Carrier glass and method for producing same

Patent metadata

Field	Value
Publication number	US-12109780-B2
Application number	US-201816607403-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	Apr 27, 2017
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A carrier glass of the present invention is a carrier glass for carrying an organic resin substrate, wherein the carrier glass has a flat sheet shape having a thickness of from 0.1 mm to 1.2 mm, wherein the carrier glass has a content of iron in glass in terms of Fe2O3 of from 45 ppm by mass to 130 ppm by mass, and wherein the carrier glass has a transmittance at a wavelength of 308 nm in a thickness direction of from 71% to 81%.

First claim

The invention claimed is:

1. A carrier glass for carrying an organic resin substrate,
wherein the carrier glass has a flat sheet shape having a thickness of from 0.1 mm to 1.2 mm,
wherein the carrier glass has a content of iron in glass in terms of Fe 2 O 3 of from 45 ppm by mass to 130 ppm by mass,
wherein the carrier glass has a transmittance at a wavelength of 308 nm in a thickness direction of from 71%to 81%,
wherein the carrier glass has a ratio of (MgO+CaO+SrO+BaO)/Al 2 O 3 in terms of mass % of from 0.90 to 1.40,
wherein the carrier glass has a specific Young's modulus that is greater than 29.5 GPa/g·cm -3 , and
wherein the carrier glass comprises as a glass composition, in terms of mass %, 0% to 6% of B 2 O 3 , and 0% to 6% of MgO, and is free of P 2 O 5 .

2. The carrier glass according to claim 1 , wherein the carrier glass has a content of Li 2 O+Na 2 O+K 2 O in a glass composition of less than 0.20 mass %.

3. The carrier glass according to claim 1 , wherein the carrier glass has a β-OH value of 0.20/mm or less.

4. The glass carrier glass according to claim 1 , wherein the carrier glass comprises as a glass composition, in terms of mass % on a basis of the following oxides, 55% to 65% of SiO 2 , 15% to 23% of Al 2 O 3 , 0% to 6% of B 2 O 3 , 0% to less than 0.20% of Li 2 O+Na 2 O+K 2 O, 0% to 6% of MgO, 0.1% to 10% of CaO, 0% to 10% of SrO, 0% to 13% of BaO, 60 ppm to 130 ppm of Fe 2 O 3 , 0% to less than 0.010% of As 2 O 3 , and 0% to less than 0.010% of Sb 2 O 3 .

5. The carrier glass according to claim 1 , wherein the carrier glass has a thermal compaction rate of 20 ppm or less when the carrier glass is increased in temperature from normal temperature at a rate of 5° C./min, kept at 500° C. for 1 hour, and decreased in temperature at a rate of 5° C./min.

6. The carrier glass according to claim 1 , wherein the carrier glass has a liquidus temperature of 1,300° C. or less.

7. The carrier glass according to claim 1 , wherein the carrier glass has a temperature at a viscosity at high temperature of 10 2.5 dPa·s of 1,700° C. or less.

8. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 1 .

9. The carrier glass according to claim 2 , wherein the carrier glass has a β-OH value of 0.20/mm or less.

10. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 2 .

11. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 3 .

12. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 4 .

13. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 5 .

14. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 6 .

15. A glass-resin laminate, comprising a carrier glass and an organic resin substrate laminated on each other,
wherein the carrier glass comprises the carrier glass of claim 7 .

16. The carrier glass according to claim 1 , wherein the carrier glass has a content of B 2 O 3 that is 0.72 mass % or less.

17. The carrier glass according to claim 1 , wherein the carrier glass has a content of BaO is 7.64 mass % to 13 mass %.

Assignees

• Nippon Electric Glass Co

Inventors

• Saito Atsuki

Classifications

• B32B17/10

  of synthetic resin · CPC title

• C03C3/087 Primary

  containing calcium oxide, e.g. common sheet or container glass · CPC title

• C03B17/06

  Forming glass sheets · CPC title

• B32B2457/206

  Organic displays, e.g. OLED · CPC title

• B32B2250/02

  2 layers · CPC title