Medium glass powder for plasma display panel and preparation method thereof

By using lead-free system dielectric glass powder, combined with platinum crucible melting and jet pulverizer technology, the problem of high-temperature sintering bubble removal and discoloration of the dielectric layer material on the front plate of the plasma display panel is solved, and a medium with high light transmittance and environmental protection is achieved. layer material to meet the thermal expansion coefficient requirements of the plasma display panel.

CN101684033AInactive Publication Date: 2010-03-31SICHUAN COC DISPLAY DEVICES
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Patent Information

Application Number
CN200810223463.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2008-09-28
Publication Date
2010-03-31
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The front plate dielectric layer material of the existing plasma display panel has bubbles that are difficult to remove during high-temperature sintering, discoloration, and environmental problems. In particular, the inorganic powder has high requirements for purity, particle size, and particle size distribution, and it is difficult to meet the high transmittance and durability requirements. voltage characteristics.

Method used

Using lead-free system dielectric glass powder, including Bi2O3, B2O3, SiO2, ZnO, BaO, K2O and other components, through platinum crucible melting and jet mill ultra-fine crushing process, high purity, fine particle size and narrow particle size distribution are prepared Glass powder forms a dielectric layer with high light transmittance.

Benefits of technology

It achieves the density and high light transmittance of the dielectric layer, reduces bubbles and discoloration phenomena, meets environmental protection requirements, and adapts to the thermal expansion coefficient requirements of plasma display panels, improving the performance of the material.

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Abstract

The invention provides dielectric glass powder for a plasma display panel and a preparation method thereof, and dielectric paste containing the dielectric glass powder and an organic carrier comprising resin and a solvent and a preparation method thereof. The dielectric glass powder comprises 30 to 50 weight percent of Bi2O3, 10 to 20 weight percent of B2O3, 1 to 8 weight percent of SiO2, 10 to 20weight percent of ZnO, 10 to 20 weight percent of BaO and 1 to 8 weight percent of K2O. In addition, according to the need of performance regulation, 0 to 5 weight percent of Al2O3, 0 to 5 weight percent of MgO or 0 to 1 weight percent of CuO can also be added. The glass powder prepared by the method has excellent performance, high purity, small particle size and narrow size distribution. Bubblesof a dielectric material containing the glass powder are easy to remove during sintering, the dielectric material does not have abnormal coloring, the compactness of a dielectric layer can be improved and the bubbles are reduced; and a front panel dielectric layer prepared is even and smooth and has high transmittance of visible light.
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