Composition for forming a protective layer and a protective layer of plasma display panel prepared f

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The present invention refers to MgO alkali earth, rare earth metal and 3B group selected from the group consisting of one or more oxide including capable of forming a protection film composition. The present invention according to the protective layer is a lower layer, an aluminum layer of the existing method MgO composition 2 secondary electron emission amount using the same many a passivation layer of a plasma display panel discharge the movable member is driven by. part and a bottom part of the disclosure. Furthermore, thus increase the SrO sintered body passivation film depositing to make the heat-treated thin film by forming a resistance, crystalline, transmittance side the average a passivation layer of a plasma display panel can be produced.