Provided is a sealing material suitable for laser sealing, which enhances long-term reliability of an OLED display and the like. The sealing material comprises 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder and 0.3 to 20 mass % of a pigment and is used for laser seal
Provided is a sealing material suitable for laser sealing, which enhances long-term reliability of an OLED display and the like. The sealing material comprises 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder and 0.3 to 20 mass % of a pigment and is used for laser sealing.
대표청구항▼
1. A sealing material for laser sealing, comprising 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder, 0.3 to 20 mass % of a pigment, and a refractory filler having a maximum particle diameter D99 of 10 μm or less, wherein the sealing material has a thermal expansion co
1. A sealing material for laser sealing, comprising 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder, 0.3 to 20 mass % of a pigment, and a refractory filler having a maximum particle diameter D99 of 10 μm or less, wherein the sealing material has a thermal expansion coefficient of 75×10−7/° C. or less. 2. The sealing material according to claim 1, wherein the SnO-containing glass powder comprises, as a glass composition in terms of mol %, 35 to 70% of SnO and 10 to 30% of P2O5. 3. The sealing material according to claim 2, wherein the SnO-containing glass powder further comprises, as a glass composition in terms of mol %, 1 to 20% of ZnO, 1 to 20% of B2 O3, and 0.1 to 10% of Al2 O3. 4. The sealing material according to claim 1, wherein the pigment comprises at least one selected from carbon (C), Co3 O4, CuO, Cr2O3, Fe2O3, MnO2, SnO, and Tin O2n−1 where n represents an integer. 5. The sealing material according to claim 1, wherein the inorganic powder comprises 0.1 to 60 vol % of the refractory filler. 6. The sealing material according to claim 1, wherein the refractory filler comprises at least one selected from cordierite, zircon, tin oxide, niobium oxide, zirconium phosphate, zirconium phosphate tungstate, and NbZr(PO4)3. 7. The sealing material according to claim 1, which is used for sealing an OLED device. 8. A paste material, comprising a sealing material and a vehicle, wherein the sealing material comprises the sealing material according to claim 1 and the vehicle comprises an aliphatic polyolefin-based carbonate. 9. The paste material according to claim 8, wherein the vehicle comprises at least one selected from N,N′-dimethylformamide, ethylene glycol, dimethylsulfoxide, dimethyl carbonate, propylene carbonate, butyrolactone, caprolactone, N-methyl-2-pyrrolidone, phenyl diglycol (PhDG), dibutyl phthalate (DBP), benzyl glycol (BzG), benzyl diglycol (BzDG), and phenyl glycol (PhG). 10. The paste material according to claim 8, which is subjected to debinder treatment in an inert atmosphere. 11. The paste material according to claim 8, which is subjected to laser sealing in an inert atmosphere. 12. A sealing material for laser sealing, comprising 99 to 99.95 mass % of an inorganic powder containing SnO-containing glass powder, 0.05 to 1 mass % of a pigment, and a refractory filler having a maximum particle diameter D99 of 10 μm or less, wherein primary particles of the pigment have an average particle diameter D50 of 1 to 100 nm, andwherein the sealing material has a thermal expansion coefficient of 75×10−7/° C. or less. 13. The sealing material according to claim 12, wherein the pigment comprises carbon. 14. The sealing material according to claim 12, wherein the pigment is amorphous carbon or graphite. 15. The sealing material according to claim 12, wherein the SnO-containing glass powder comprises, as a glass composition in terms of mol %, 35 to 70% of SnO and 10 to 30% of P2O5. 16. The sealing material according to claim 15, wherein the SnO-containing glass powder further comprises, as a glass composition, 1 to 20mol % of ZnO. 17. The sealing material according to claim 15, wherein the SnO-containing glass powder further comprises, as a glass composition, 1 to 20 mol % of B2O3. 18. The sealing material according to claim 15, wherein the SnO-containing glass powder further comprises, as a glass composition, 0.1 to 10 mol % of Al2O3. 19. The sealing material according to claim 12, wherein the inorganic powder comprises 0.1 to 60 vol % of the refractory filler. 20. The sealing material according to claim 19, wherein the refractory filler comprises at least one selected from cordierite, zircon, tin oxide, niobium oxide, zirconium phosphate-based ceramic, and NbZr(PO4)3. 21. The sealing material according to claim 12, which is used for sealing an OLED device. 22. A paste material, comprising a sealing material and a vehicle, wherein the sealing material comprises the sealing material according to claim 12 and the vehicle comprises an aliphatic polyolefin-based carbonate. 23. The paste material according to claim 22, wherein the vehicle further comprises at least one selected from N,N′-dimethylformamide, ethylene glycol, dimethylsulfoxide, dimethyl carbonate, propylene carbonate, butyrolactone, caprolactone, N-methyl-2-pyrrolidone, phenyl diglycol (PhDG), dibutyl phthalate (DBP), benzyl glycol (BzG), benzyl diglycol (BzDG), and phenyl glycol (PhG). 24. The paste material according to claim 22, which is subjected to debinder treatment in an inert atmosphere. 25. The paste material according to claim 22, which is subjected to laser sealing in an inert atmosphere.
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