Provided is a sealing material that easily converts laser light to thermal energy, exhibits satisfactory fluidity, and is conducive to a reduction in its melting point. The sealing material includes 54.9 vol % to 99.9 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 0.1 vo
Provided is a sealing material that easily converts laser light to thermal energy, exhibits satisfactory fluidity, and is conducive to a reduction in its melting point. The sealing material includes 54.9 vol % to 99.9 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 0.1 vol % to 10 vol % of a laser absorbing material, in which the glass powder includes as a glass composition, in terms of the following oxides in mass %, 70% to 90% of Bi2O3, 2% to 12% of B2O3, 1% to 15% of ZnO, 0.2% to 15% of CuO+Fe2O3, and 0.1% to 20% of MgO+CaO+SrO+BaO.
대표청구항▼
1. A sealing material, comprising 54.9 vol % to 97 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 3 vol % to 25 vol % of a laser absorbing material, wherein the glass powder comprises as a glass composition, in terms of the following oxides in mass %, 70% to 90% of Bi2O3
1. A sealing material, comprising 54.9 vol % to 97 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 3 vol % to 25 vol % of a laser absorbing material, wherein the glass powder comprises as a glass composition, in terms of the following oxides in mass %, 70% to 90% of Bi2O3, 2% to 12% of B2O3, 1% to 15% of ZnO, 0.2% to 15% of CuO+Fe2O3, and 0.1% to 20% of MgO+CaO+SrO+BaO. 2. The sealing material according to claim 1, wherein the glass powder comprises as the glass composition 4 mass % or more of CuO+Fe2O3. 3. The sealing material according to claim 1, wherein the glass powder has a molar ratio BaO/ZnO of from 0.01 to 2 in the glass composition. 4. The sealing material according to claim 1, wherein the glass powder has a molar ratio Bi2O3/B2O3 of 1.6 or more in the glass composition. 5. The sealing material according to claim 1, wherein the glass powder has a molar ratio Bi2O3/ZnO of 1.55 or more in the glass composition. 6. The sealing material according to claim 1, wherein the glass powder comprises as the glass composition 0.1 mass % or more of BaO. 7. The sealing material according to claim 1, wherein the glass powder comprises as the glass composition 5 mass % or more of CuO+Fe2O3, and has a molar ratio Bi2O3/B2O3 of 1.5 or less and a molar ratio BaO/ZnO of 0.7 or more in the glass composition. 8. The sealing material according to claim 1, wherein the refractory filler powder comprises one or more selected from the group consisting of cordierite, willemite, alumina, zirconium phosphate, zircon, zirconia, and tin oxide. 9. The sealing material according to claim 1, wherein the laser absorbing material comprises one or more selected from the group consisting of a Cu-based oxide, an Fe-based oxide, a Cr-based oxide, a Mn-based oxide, and composite oxides thereof. 10. The sealing material according to claim 1, wherein the laser absorbing material has an average particle diameter D50 of from 0.01 μm to 3 μm. 11. The sealing material according to claim 1, wherein the sealing material is substantially free of PbO. 12. The sealing material according to claim 1, wherein the sealing material has a softening point of 500° C. or less. 13. The sealing material according to claim 1, wherein the sealing material is used for sealing treatment with laser light. 14. The sealing material according to claim 1, wherein the sealing material is used for sealing an OLED device or a solar cell.
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이 특허에 인용된 특허 (2)
Masuda, Noriaki; Shiragami, Toru; Arakawa, Hiroshi, Glass substrate with sealing material layer, organic EL device using same, and manufacturing method for electronic device.
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