MGO DEPOSITION MATERIAL

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PROBLEM TO BE SOLVED : To provide an MgO deposition material which is manufactured with excellent yield, can provide excellent discharge responsiveness over a wide temperature range, and enables the number of address IC to be considerably reduced without degrading panel luminance. SOLUTION : An MgO deposition material for forming a protection film for a PDP is composed of an MgO pellet having an MgO purity of ≥ 98% and a relative density of ≥ 90%. The pellet includes only Sc element as a rare earth element. Concentration of the Sc element is 5-5, 000ppm, preferably, 10-3, 000ppm, and more preferably, 20-2, 000ppm. COPYRIGHT : (C)2006, JPO&NCIPI