| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective film for a PDP, and to provide its manufacturing method. SOLUTION: This protective film for a PDP is formed on a substrate of the PDP including a sustaining electrode, wherein grain columns having directionality are formed in the organization of the protective film. Thereby, the direction of voids can be determined by providing directionality to a grain column arrangement of the protective film organization, whereby the sputtering yield can be reduced by plasma ions to extend the life of the protective film when an electric field is applied in a direction in which the number of voids is small to generate discharge; and secondary electrons are rapidly emitted without disturbing discharge ions by the voids and surface roughness, whereby a discharge delay time can further be reduced and a discharge start voltage can further be improved as well. COPYRIGHT: (C)2006,JPO&NCIPI
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