GLASS FOR SCATTERING LAYER OF ORGANIC LED ELEMENT, LAMINATED SUBSTRATE FOR ORGANIC LED ELEMENT AND METHOD OF MANUFACTURING THE SAME, AND ORGANIC LED ELEMENT AND METHOD OF MANUFACTURING THE SAME

• US 20140191223A1
• Filed: 03/13/2014
• Published: 07/10/2014
• Est. Priority Date: 10/14/2011
• Status: Abandoned Application

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: WADA, Naoya, TANIDA, Masamichi
• Application Number:
  US14/208,554
• Publication Number:
  US 20140191223A1
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C03C 14/006 the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
• CPC Class Codes: C03C 17/04 by fritting glass powder
• CPC Class Codes: C03C 2214/16 Microcrystallites, e.g. of optically or electrically active material
• CPC Class Codes: C03C 2217/452 Glass
• CPC Class Codes: C03C 2217/475 Inorganic materials
• CPC Class Codes: C03C 2217/477 Titanium oxide
• CPC Class Codes: C03C 2217/478 Silica
• CPC Class Codes: C03C 3/066 containing zinc
• CPC Class Codes: C03C 3/14 containing boron
• CPC Class Codes: C03C 8/02 Frit compositions, i.e. in a powdered or comminuted form
• CPC Class Codes: C03C 8/16 with vehicle or suspending agents, e.g. slip
• CPC Class Codes: H10K 50/854 comprising scattering means
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass

Abstract

Glass for a scattering layer of an organic LED includes, as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅, and a total amount of B₂O₃-content and ZnO-content is 78% or less.

Claims

1. Glass for a scattering layer of an organic LED element, comprising:

as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅; and

a total amount of B₂O₃-content and ZnO-content is 78% or less.

2. The glass for the scattering layer of the organic LED element as claimed in claim 1, which includes substantially no alkaline metal oxides (Li₂O, Na₂O, and K₂O), lead (PbO, Pb₃O₄), nor P₂O₅, except for being included as an impurity.

3. A method of manufacturing a laminated substrate for an organic LED element having a translucent substrate and a scattering layer, wherein:

the scattering layer includes, within a base material made of glass, a scattering material having a refractive index different from that of the glass and dispersed within the base material, and is formed by sintering a raw material including the glass; and

the glass includes, as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅, and a total amount of B₂O₃-content and ZnO-content is 78% or less.

4. The method of manufacturing the laminated substrate of the organic LED element as claimed in claim 3, wherein the glass includes substantially no alkaline metal oxides (Li₂O, Na₂O, and K₂O), lead (PbO, Pb₃O₄), nor P₂O₅, except for being included as an impurity.

5. The method of manufacturing the laminated substrate of the organic LED element as claimed in claim 3, wherein the scattering layer is formed by sintering the raw material at a temperature higher than or equal to a glass-transition temperature of the glass plus 100°

C.

6. The method of manufacturing the laminated substrate of the organic LED element as claimed in claim 3, wherein the scattering material includes ceramic particles.

7. The method of manufacturing the laminated substrate of the organic LED element as claimed in claim 6, wherein an average particle diameter of the ceramic particles is 1 μ

m or less.

8. The method of manufacturing the laminated substrate of the organic LED element as claimed in claim 6, wherein a ratio of the ceramic particles occupying the scattering layer is 5 volume % or less.

9. A laminated substrate for an organic LED element having a translucent substrate and a scattering layer, wherein:

the scattering layer includes, within a base material made of glass, a scattering material having a refractive index different from that of the glass and dispersed within the base material; and

the glass includes, as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅, and a total amount of B₂O₃-content and ZnO-content is 78% or less.

10. A method of manufacturing an organic LED element having a translucent substrate, a scattering layer, a first electrode, an organic layer, and a second electrode in this order, wherein:

the scattering layer includes, within a base material made of glass, a scattering material having a refractive index different from that of the glass and dispersed within the base material, and is formed by sintering a raw material including the glass; and

the glass includes, as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅, and a total amount of B₂O₃-content and ZnO-content is 78% or less.

11. The method of manufacturing the organic LED element as claimed in claim 10, wherein the glass includes substantially no alkaline metal oxides (Li₂O, Na₂O, and K₂O), lead (PbO, Pb₃O₄), nor P₂O₅, except for being included as an impurity.

12. The method of manufacturing the organic LED element as claimed in claim 10, wherein the scattering layer is formed by sintering the raw material at a temperature higher than or equal to a glass-transition temperature of the glass plus 100°

C.

13. The method of manufacturing the organic LED element as claimed in claim 10, wherein the scattering layer includes ceramic particles.

14. The method of manufacturing the organic LED element as claimed in claim 13, wherein an average particle diameter of the ceramic particles is 1 μ

m or less.

15. The method of manufacturing the organic LED element as claimed in claim 13, wherein a ratio of the ceramic particles occupying the scattering layer is 10 volume % or less.

16. An organic LED element comprising:

a translucent substrate, a scattering layer, a first electrode, an organic layer, and a second electrode in this order,

wherein the scattering layer includes, within a base material made of glass, a scattering material having a refractive index different from that of the glass and dispersed within the base material; and

wherein the glass includes, as represented by mol percentage based on the following oxides, 26% to 43% of B₂O₃, 30% to 37% of ZnO, 17% to 23% of Bi₂O₃, 2% to 21% of SiO₂, and 0 to 2% of P₂O₅, and a total amount of B₂O₃-content and ZnO-content is 78% or less.