| 简介 |
PROBLEM TO BE SOLVED : To provide a deposition material for a protection film and the protection film that reduce discharge voltage of a plasma display panel enhancing Xe density in a discharge gas at ≥10% in order to raise light-emitting efficiency and can easily handle.
SOLUTION : The deposition material for the protection film of a plasma display panel contains a rare-earth element of 0.3-0.6 mol% against Mg, and the Xe density in the discharge gas wherein MgO purity is ≥99 mol% is ≥10%. In the protection film of a plasma display panel, the Xe density in the discharge gas made of MgO containing a rare-earth element of 0.7-1.6 mol% is ≥10%. Ce is preferable as a rare-earth element.
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