| 摘要 |
To provide non-lead glass for covering electrodes, whereby the strength of front substrates of plasma display devices can be improved, and the dielectric constant can be made small. Non-lead glass for covering electrodes, which comprises, as represented by mol % based on the following oxides, from 42 to 52% of B2O3, from 40 to 48% of SiO2, from 3.5 to less than 7% of K2O and from 0 to 6% of ZrO2, wherein the total content of B2O3 and SiO2 is at least 88%. Further, a plasma display device comprising a front glass substrate to be used as a display surface, a rear glass substrate and barrier ribs to define cells, wherein transparent electrodes formed on the front glass substrate or the rear glass substrate are covered with the above non-lead glass for covering electrodes.
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