| 摘要 |
<p>A dielectric material for plasma display panels which comprises a ZnO-B2O3-SiO2-Bi2O3-R2O lead-free glass powder and which, despite this, gives a highly transparent dielectric layer on a glass substrate having a silver electrode formed thereon. The dielectric layer is less apt to have yellowed and has a coefficient of thermal expansion compatible with the glass substrate. The dielectric material can be burned at 600°C or lower. Also provided are: a method of forming a dielectric layer; a dielectric layer formed from the dielectric material; and a glass plate for plasma display panels which has the dielectric layer. The dielectric material for plasma display panels comprises a glass powder based on ZnO-B2O3-SiO2-Bi2O3-R2O (wherein R2O represents alkali metal oxides comprising Li2O, Na2O, and K2O). It is characterized in that the glass powder contains substantially no PbO and is made of a glass which comprises, in terms of percentage by mass, 45-85% ZnO+B2O3+SiO2, 10-25% Bi2O3, 0.1-10% R2O, and 0.01-0.30% CoO, the R2O/Bi2O3 ratio being 0.05-0.80 by mass.</p> |
